From 2a40cbfbd2c93e0794fc0f36478bb4438ff02c7e Mon Sep 17 00:00:00 2001 From: Sakimori Date: Mon, 28 Dec 2020 03:21:47 -0500 Subject: [PATCH 01/40] got a web page with all current games' full display states available in json --- games.py | 14 +- main_controller.py | 94 + .../Flask-1.1.2.dist-info/INSTALLER | 1 + .../Flask-1.1.2.dist-info/LICENSE.rst | 28 + .../Flask-1.1.2.dist-info/METADATA | 137 + .../Flask-1.1.2.dist-info/RECORD | 49 + .../Flask-1.1.2.dist-info/REQUESTED | 0 .../site-packages/Flask-1.1.2.dist-info/WHEEL | 6 + .../Flask-1.1.2.dist-info/entry_points.txt | 3 + .../Flask-1.1.2.dist-info/top_level.txt | 1 + .../Flask_SocketIO-5.0.1.dist-info/INSTALLER | 1 + .../Flask_SocketIO-5.0.1.dist-info/LICENSE | 20 + .../Flask_SocketIO-5.0.1.dist-info/METADATA | 27 + .../Flask_SocketIO-5.0.1.dist-info/RECORD | 13 + .../Flask_SocketIO-5.0.1.dist-info/REQUESTED | 0 .../Flask_SocketIO-5.0.1.dist-info/WHEEL | 6 + .../top_level.txt | 1 + .../Jinja2-2.11.2.dist-info/INSTALLER | 1 + 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matteo_env/Lib/site-packages/werkzeug/wrappers/cors.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wrappers/etag.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wrappers/json.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wrappers/request.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wrappers/response.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wrappers/user_agent.py create mode 100644 matteo_env/Lib/site-packages/werkzeug/wsgi.py create mode 100644 matteo_env/Scripts/flask.exe diff --git a/games.py b/games.py index 0bf07ee..2a75145 100644 --- a/games.py +++ b/games.py @@ -107,11 +107,11 @@ class team(object): self.slogan = None def add_lineup(self, new_player): - if len(self.lineup) <= 12: + if len(self.lineup) < 20: self.lineup.append(new_player) return (True,) else: - return (False, "12 players in the lineup, maximum. We're being generous here.") + return (False, "20 players in the lineup, maximum. We're being really generous here.") def set_pitcher(self, new_player): self.pitcher = new_player @@ -530,6 +530,16 @@ class game(object): "home_pitcher" : self.teams["home"].pitcher } + def named_bases(self): + name_bases = {} + for base in range(1,4): + if self.bases[base] is not None: + name_bases[base] = self.bases[base].name + else: + name_bases[base] = None + + return name_bases + def gamestate_update_full(self): attempts = self.thievery_attempts() diff --git a/main_controller.py b/main_controller.py new file mode 100644 index 0000000..cd96288 --- /dev/null +++ b/main_controller.py @@ -0,0 +1,94 @@ +import asyncio, time, datetime, games, json, threading +from flask import Flask, url_for, Response + +app = Flask("the-prestige") + +@app.route('/') +def hello(): + return url_for("boop") + +@app.route("/gotoboop") +def boop(): + return states_to_send + +thread2 = threading.Thread(target=app.run) +thread2.start() + +master_games_dic = {} #key timestamp : (game game, {} state) +states_to_send = {} + +def update_loop(): + while True: + game_times = iter(master_games_dic.copy().keys()) + for game_time in game_times: + this_game, state = master_games_dic[game_time] + test_string = this_game.gamestate_display_full() + + state["display_inning"] = this_game.inning #games need to be initialized with the following keys in state: + state["outs"] = this_game.outs #away_name + state["pitcher"] = this_game.get_pitcher().name #home_name + state["batter"] = this_game.get_batter().name #max_innings + state["away_score"] = this_game.teams["away"].score #top_of_inning = True + state["home_score"] = this_game.teams["home"].score #update_pause = 0 + #victory_lap = False + if test_string == "Game not started.": #weather_emoji + state["update_emoji"] = "🍿" #weather_text + state["update_text"] = "Play blall!" #they also need a timestamp + state["delay"] -= 1 + + if state["delay"] <= 0: + if this_game.top_of_inning != state["top_of_inning"]: + state["update_pause"] = 2 + state["pitcher"] = "-" + state["batter"] = "-" + if state["top_of_inning"]: + state["display_inning"] -= 1 + + if state["update_pause"] == 1: + state["update_emoji"] = "🍿" + if this_game.top_of_inning: + state["update_text"] = f"Top of {this_game.inning}. {this_game.teams['away'].name} batting!" + else: + if this_game.inning >= this_game.max_innings: + if this_game.teams["home"].score > this_game.teams["away"].score: + state["victory_lap"] = True + state["update_text"] = f"Bottom of {this_game.inning}. {this_game.teams['home'].name} batting!" + + elif state["update_pause"] != 1 and test_string != "Game not started.": + if "steals" in this_game.last_update[0].keys(): + updatestring = "" + for attempt in this_game.last_update[0]["steals"]: + updatestring += attempt + "\n" + + state["emoji"] = "💎" + state["update_text"] = updatestring + + else: + updatestring = "" + punc = "" + if this_game.last_update[0]["defender"] != "": + punc = ". " + + if "fc_out" in this_game.last_update[0].keys(): + name, base_string = this_game.last_update[0]['fc_out'] + updatestring = f"{this_game.last_update[0]['batter']} {this_game.last_update[0]['text'].value.format(name, base_string)} {this_game.last_update[0]['defender']}{punc}" + else: + updatestring = f"{this_game.last_update[0]['batter']} {this_game.last_update[0]['text'].value} {this_game.last_update[0]['defender']}{punc}" + if this_game.last_update[1] > 0: + updatestring += f"{this_game.last_update[1]} runs scored!" + + state["emoji"] = "🏏" + state["update_text"] = updatestring + + state["bases"] = this_game.named_bases() + + state["top_of_inning"] = this_game.top_of_inning + + states_to_send[game_time] = state + + if state["update_pause"] <= 1 and state["delay"] < 0: + this_game.gamestate_update_full() + + state["update_pause"] -= 1 + + time.sleep(6) \ No newline at end of file diff --git a/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/INSTALLER b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/LICENSE.rst b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/LICENSE.rst new file mode 100644 index 0000000..9d227a0 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/LICENSE.rst @@ -0,0 +1,28 @@ +Copyright 2010 Pallets + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/METADATA b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/METADATA new file mode 100644 index 0000000..db7fcd1 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/METADATA @@ -0,0 +1,137 @@ +Metadata-Version: 2.1 +Name: Flask +Version: 1.1.2 +Summary: A simple framework for building complex web applications. +Home-page: https://palletsprojects.com/p/flask/ +Author: Armin Ronacher +Author-email: armin.ronacher@active-4.com +Maintainer: Pallets +Maintainer-email: contact@palletsprojects.com +License: BSD-3-Clause +Project-URL: Documentation, https://flask.palletsprojects.com/ +Project-URL: Code, https://github.com/pallets/flask +Project-URL: Issue tracker, https://github.com/pallets/flask/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Web Environment +Classifier: Framework :: Flask +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content +Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Application +Classifier: Topic :: Software Development :: Libraries :: Application Frameworks +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.* +Requires-Dist: Werkzeug (>=0.15) +Requires-Dist: Jinja2 (>=2.10.1) +Requires-Dist: itsdangerous (>=0.24) +Requires-Dist: click (>=5.1) +Provides-Extra: dev +Requires-Dist: pytest ; extra == 'dev' +Requires-Dist: coverage ; extra == 'dev' +Requires-Dist: tox ; extra == 'dev' +Requires-Dist: sphinx ; extra == 'dev' +Requires-Dist: pallets-sphinx-themes ; extra == 'dev' +Requires-Dist: sphinxcontrib-log-cabinet ; extra == 'dev' +Requires-Dist: sphinx-issues ; extra == 'dev' +Provides-Extra: docs +Requires-Dist: sphinx ; extra == 'docs' +Requires-Dist: pallets-sphinx-themes ; extra == 'docs' +Requires-Dist: sphinxcontrib-log-cabinet ; extra == 'docs' +Requires-Dist: sphinx-issues ; extra == 'docs' +Provides-Extra: dotenv +Requires-Dist: python-dotenv ; extra == 'dotenv' + +Flask +===== + +Flask is a lightweight `WSGI`_ web application framework. It is designed +to make getting started quick and easy, with the ability to scale up to +complex applications. It began as a simple wrapper around `Werkzeug`_ +and `Jinja`_ and has become one of the most popular Python web +application frameworks. + +Flask offers suggestions, but doesn't enforce any dependencies or +project layout. It is up to the developer to choose the tools and +libraries they want to use. There are many extensions provided by the +community that make adding new functionality easy. + + +Installing +---------- + +Install and update using `pip`_: + +.. code-block:: text + + pip install -U Flask + + +A Simple Example +---------------- + +.. code-block:: python + + from flask import Flask + + app = Flask(__name__) + + @app.route("/") + def hello(): + return "Hello, World!" + +.. code-block:: text + + $ env FLASK_APP=hello.py flask run + * Serving Flask app "hello" + * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit) + + +Contributing +------------ + +For guidance on setting up a development environment and how to make a +contribution to Flask, see the `contributing guidelines`_. + +.. _contributing guidelines: https://github.com/pallets/flask/blob/master/CONTRIBUTING.rst + + +Donate +------ + +The Pallets organization develops and supports Flask and the libraries +it uses. In order to grow the community of contributors and users, and +allow the maintainers to devote more time to the projects, `please +donate today`_. + +.. _please donate today: https://psfmember.org/civicrm/contribute/transact?reset=1&id=20 + + +Links +----- + +* Website: https://palletsprojects.com/p/flask/ +* Documentation: https://flask.palletsprojects.com/ +* Releases: https://pypi.org/project/Flask/ +* Code: https://github.com/pallets/flask +* Issue tracker: https://github.com/pallets/flask/issues +* Test status: https://dev.azure.com/pallets/flask/_build +* Official chat: https://discord.gg/t6rrQZH + +.. _WSGI: https://wsgi.readthedocs.io +.. _Werkzeug: https://www.palletsprojects.com/p/werkzeug/ +.. _Jinja: https://www.palletsprojects.com/p/jinja/ +.. _pip: https://pip.pypa.io/en/stable/quickstart/ + + diff --git a/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/RECORD b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/RECORD new file mode 100644 index 0000000..8fa81f3 --- 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b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/entry_points.txt new file mode 100644 index 0000000..1eb0252 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/entry_points.txt @@ -0,0 +1,3 @@ +[console_scripts] +flask = flask.cli:main + diff --git a/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/top_level.txt b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/top_level.txt new file mode 100644 index 0000000..7e10602 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask-1.1.2.dist-info/top_level.txt @@ -0,0 +1 @@ +flask diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/INSTALLER b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/LICENSE b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/LICENSE new file mode 100644 index 0000000..f5c10ab --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/LICENSE @@ -0,0 +1,20 @@ +The MIT License (MIT) + +Copyright (c) 2014 Miguel Grinberg + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software is furnished to do so, +subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/METADATA b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/METADATA new file mode 100644 index 0000000..7b2e141 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/METADATA @@ -0,0 +1,27 @@ +Metadata-Version: 2.1 +Name: Flask-SocketIO +Version: 5.0.1 +Summary: Socket.IO integration for Flask applications +Home-page: http://github.com/miguelgrinberg/Flask-SocketIO/ +Author: Miguel Grinberg +Author-email: miguelgrinberg50@gmail.com +License: MIT +Platform: any +Classifier: Environment :: Web Environment +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: MIT License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 3 +Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Requires-Dist: Flask (>=0.9) +Requires-Dist: python-socketio (>=5.0.2) + + +Flask-SocketIO +-------------- + +Socket.IO integration for Flask applications. + + diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/RECORD b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/RECORD new file mode 100644 index 0000000..a75fbfa --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/RECORD @@ -0,0 +1,13 @@ +Flask_SocketIO-5.0.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +Flask_SocketIO-5.0.1.dist-info/LICENSE,sha256=aNCWbkgKjS_T1cJtACyZbvCM36KxWnfQ0LWTuavuYKQ,1082 +Flask_SocketIO-5.0.1.dist-info/METADATA,sha256=ZGkOXFiwpUToh06H483U7XKXKi7tybYhE9ajnguMpFE,825 +Flask_SocketIO-5.0.1.dist-info/RECORD,, +Flask_SocketIO-5.0.1.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0 +Flask_SocketIO-5.0.1.dist-info/WHEEL,sha256=Z-nyYpwrcSqxfdux5Mbn_DQ525iP7J2DG3JgGvOYyTQ,110 +Flask_SocketIO-5.0.1.dist-info/top_level.txt,sha256=C1ugzQBJ3HHUJsWGzyt70XRVOX-y4CUAR8MWKjwJOQ8,15 +flask_socketio/__init__.py,sha256=hy8Sh1yu3zsZF3QUC0_U4VNsBumswPBAWoqNOlgA8wk,47464 +flask_socketio/__pycache__/__init__.cpython-38.pyc,, +flask_socketio/__pycache__/namespace.cpython-38.pyc,, +flask_socketio/__pycache__/test_client.cpython-38.pyc,, +flask_socketio/namespace.py,sha256=mt8S3u-Iwn-wHaV0QwVMMItOQZtc-A2bxMnlwQHLuxw,2019 +flask_socketio/test_client.py,sha256=YW7mz4jO3XZAg1Xg_QDy4va233oyYO9Uo9JHJ0v2FCA,10269 diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/REQUESTED b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/REQUESTED new file mode 100644 index 0000000..e69de29 diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/WHEEL b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/WHEEL new file mode 100644 index 0000000..01b8fc7 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.36.2) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/top_level.txt b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/top_level.txt new file mode 100644 index 0000000..ba82ec3 --- /dev/null +++ b/matteo_env/Lib/site-packages/Flask_SocketIO-5.0.1.dist-info/top_level.txt @@ -0,0 +1 @@ +flask_socketio diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/INSTALLER b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/LICENSE.rst b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/LICENSE.rst new file mode 100644 index 0000000..c37cae4 --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/LICENSE.rst @@ -0,0 +1,28 @@ +Copyright 2007 Pallets + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/METADATA b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/METADATA new file mode 100644 index 0000000..55c0f82 --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/METADATA @@ -0,0 +1,106 @@ +Metadata-Version: 2.1 +Name: Jinja2 +Version: 2.11.2 +Summary: A very fast and expressive template engine. +Home-page: https://palletsprojects.com/p/jinja/ +Author: Armin Ronacher +Author-email: armin.ronacher@active-4.com +Maintainer: Pallets +Maintainer-email: contact@palletsprojects.com +License: BSD-3-Clause +Project-URL: Documentation, https://jinja.palletsprojects.com/ +Project-URL: Code, https://github.com/pallets/jinja +Project-URL: Issue tracker, https://github.com/pallets/jinja/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Web Environment +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Classifier: Topic :: Text Processing :: Markup :: HTML +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.* +Description-Content-Type: text/x-rst +Requires-Dist: MarkupSafe (>=0.23) +Provides-Extra: i18n +Requires-Dist: Babel (>=0.8) ; extra == 'i18n' + +Jinja +===== + +Jinja is a fast, expressive, extensible templating engine. Special +placeholders in the template allow writing code similar to Python +syntax. Then the template is passed data to render the final document. + +It includes: + +- Template inheritance and inclusion. +- Define and import macros within templates. +- HTML templates can use autoescaping to prevent XSS from untrusted + user input. +- A sandboxed environment can safely render untrusted templates. +- AsyncIO support for generating templates and calling async + functions. +- I18N support with Babel. +- Templates are compiled to optimized Python code just-in-time and + cached, or can be compiled ahead-of-time. +- Exceptions point to the correct line in templates to make debugging + easier. +- Extensible filters, tests, functions, and even syntax. + +Jinja's philosophy is that while application logic belongs in Python if +possible, it shouldn't make the template designer's job difficult by +restricting functionality too much. + + +Installing +---------- + +Install and update using `pip`_: + +.. code-block:: text + + $ pip install -U Jinja2 + +.. _pip: https://pip.pypa.io/en/stable/quickstart/ + + +In A Nutshell +------------- + +.. code-block:: jinja + + {% extends "base.html" %} + {% block title %}Members{% endblock %} + {% block content %} + + {% endblock %} + + +Links +----- + +- Website: https://palletsprojects.com/p/jinja/ +- Documentation: https://jinja.palletsprojects.com/ +- Releases: https://pypi.org/project/Jinja2/ +- Code: https://github.com/pallets/jinja +- Issue tracker: https://github.com/pallets/jinja/issues +- Test status: https://dev.azure.com/pallets/jinja/_build +- Official chat: https://discord.gg/t6rrQZH + + diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD new file mode 100644 index 0000000..d1a691f --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD @@ -0,0 +1,61 @@ +Jinja2-2.11.2.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 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0000000..ef99c6c --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.34.2) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/entry_points.txt b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/entry_points.txt new file mode 100644 index 0000000..3619483 --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/entry_points.txt @@ -0,0 +1,3 @@ +[babel.extractors] +jinja2 = jinja2.ext:babel_extract [i18n] + diff --git a/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/top_level.txt b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/top_level.txt new file mode 100644 index 0000000..7f7afbf --- /dev/null +++ b/matteo_env/Lib/site-packages/Jinja2-2.11.2.dist-info/top_level.txt @@ -0,0 +1 @@ +jinja2 diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/INSTALLER b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/LICENSE.rst b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/LICENSE.rst new file mode 100644 index 0000000..9d227a0 --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/LICENSE.rst @@ -0,0 +1,28 @@ +Copyright 2010 Pallets + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/METADATA b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/METADATA new file mode 100644 index 0000000..c50370d --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/METADATA @@ -0,0 +1,105 @@ +Metadata-Version: 2.1 +Name: MarkupSafe +Version: 1.1.1 +Summary: Safely add untrusted strings to HTML/XML markup. +Home-page: https://palletsprojects.com/p/markupsafe/ +Author: Armin Ronacher +Author-email: armin.ronacher@active-4.com +Maintainer: The Pallets Team +Maintainer-email: contact@palletsprojects.com +License: BSD-3-Clause +Project-URL: Documentation, https://markupsafe.palletsprojects.com/ +Project-URL: Code, https://github.com/pallets/markupsafe +Project-URL: Issue tracker, https://github.com/pallets/markupsafe/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Web Environment +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.4 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Classifier: Topic :: Text Processing :: Markup :: HTML +Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.* +Description-Content-Type: text/x-rst + +MarkupSafe +========== + +MarkupSafe implements a text object that escapes characters so it is +safe to use in HTML and XML. Characters that have special meanings are +replaced so that they display as the actual characters. This mitigates +injection attacks, meaning untrusted user input can safely be displayed +on a page. + + +Installing +---------- + +Install and update using `pip`_: + +.. code-block:: text + + pip install -U MarkupSafe + +.. _pip: https://pip.pypa.io/en/stable/quickstart/ + + +Examples +-------- + +.. code-block:: pycon + + >>> from markupsafe import Markup, escape + >>> # escape replaces special characters and wraps in Markup + >>> escape('') + Markup(u'<script>alert(document.cookie);</script>') + >>> # wrap in Markup to mark text "safe" and prevent escaping + >>> Markup('Hello') + Markup('hello') + >>> escape(Markup('Hello')) + Markup('hello') + >>> # Markup is a text subclass (str on Python 3, unicode on Python 2) + >>> # methods and operators escape their arguments + >>> template = Markup("Hello %s") + >>> template % '"World"' + Markup('Hello "World"') + + +Donate +------ + +The Pallets organization develops and supports MarkupSafe and other +libraries that use it. In order to grow the community of contributors +and users, and allow the maintainers to devote more time to the +projects, `please donate today`_. + +.. _please donate today: https://palletsprojects.com/donate + + +Links +----- + +* Website: https://palletsprojects.com/p/markupsafe/ +* Documentation: https://markupsafe.palletsprojects.com/ +* License: `BSD-3-Clause `_ +* Releases: https://pypi.org/project/MarkupSafe/ +* Code: https://github.com/pallets/markupsafe +* Issue tracker: https://github.com/pallets/markupsafe/issues +* Test status: + + * Linux, Mac: https://travis-ci.org/pallets/markupsafe + * Windows: https://ci.appveyor.com/project/pallets/markupsafe + +* Test coverage: https://codecov.io/gh/pallets/markupsafe +* Official chat: https://discord.gg/t6rrQZH + + diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/RECORD b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/RECORD new file mode 100644 index 0000000..f728e1f --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/RECORD @@ -0,0 +1,15 @@ +MarkupSafe-1.1.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +MarkupSafe-1.1.1.dist-info/LICENSE.rst,sha256=RjHsDbX9kKVH4zaBcmTGeYIUM4FG-KyUtKV_lu6MnsQ,1503 +MarkupSafe-1.1.1.dist-info/METADATA,sha256=IFCP4hCNGjXJgMoSvdjPiKDLAMUTTWoxKXQsQvmyMNU,3653 +MarkupSafe-1.1.1.dist-info/RECORD,, +MarkupSafe-1.1.1.dist-info/WHEEL,sha256=jovIjvNuo6l5lHtTPdXyjKVQ_5SCkmdptE5fkPNfjyM,101 +MarkupSafe-1.1.1.dist-info/top_level.txt,sha256=qy0Plje5IJuvsCBjejJyhDCjEAdcDLK_2agVcex8Z6U,11 +markupsafe/__init__.py,sha256=UAy1UKlykemnSZWIVn8RDqY0wvjV6lkeRwYOMNhw4bA,10453 +markupsafe/__pycache__/__init__.cpython-38.pyc,, +markupsafe/__pycache__/_compat.cpython-38.pyc,, +markupsafe/__pycache__/_constants.cpython-38.pyc,, +markupsafe/__pycache__/_native.cpython-38.pyc,, +markupsafe/_compat.py,sha256=XweNhJEcyTP_wIBUaIO6nxzIb6XFwweriXyZfiTpkdw,591 +markupsafe/_constants.py,sha256=IXLUQkLM6CTustG5vEQTEy6pBB3z5pm84NkYU1aW9qI,4954 +markupsafe/_native.py,sha256=LwsYk-GHoPsPboRD_tNC6_jTmCj3MLtsnDFis7HjE50,1942 +markupsafe/_speedups.cp38-win32.pyd,sha256=8nGEdcR_DUewvF72FxW6d-aD5SYoLMe2prWwEEnH9ck,12800 diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/WHEEL b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/WHEEL new file mode 100644 index 0000000..117ab3f --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/WHEEL @@ -0,0 +1,5 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.33.6) +Root-Is-Purelib: false +Tag: cp38-cp38-win32 + diff --git a/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/top_level.txt b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/top_level.txt new file mode 100644 index 0000000..75bf729 --- /dev/null +++ b/matteo_env/Lib/site-packages/MarkupSafe-1.1.1.dist-info/top_level.txt @@ -0,0 +1 @@ +markupsafe diff --git a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/INSTALLER b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/LICENSE.rst b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/LICENSE.rst new file mode 100644 index 0000000..c37cae4 --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/LICENSE.rst @@ -0,0 +1,28 @@ +Copyright 2007 Pallets + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/METADATA b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/METADATA new file mode 100644 index 0000000..eb5f709 --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/METADATA @@ -0,0 +1,128 @@ +Metadata-Version: 2.1 +Name: Werkzeug +Version: 1.0.1 +Summary: The comprehensive WSGI web application library. +Home-page: https://palletsprojects.com/p/werkzeug/ +Author: Armin Ronacher +Author-email: armin.ronacher@active-4.com +Maintainer: Pallets +Maintainer-email: contact@palletsprojects.com +License: BSD-3-Clause +Project-URL: Documentation, https://werkzeug.palletsprojects.com/ +Project-URL: Code, https://github.com/pallets/werkzeug +Project-URL: Issue tracker, https://github.com/pallets/werkzeug/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Web Environment +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content +Classifier: Topic :: Internet :: WWW/HTTP :: WSGI +Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Application +Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Middleware +Classifier: Topic :: Software Development :: Libraries :: Application Frameworks +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.* +Description-Content-Type: text/x-rst +Provides-Extra: dev +Requires-Dist: pytest ; extra == 'dev' +Requires-Dist: pytest-timeout ; extra == 'dev' +Requires-Dist: coverage ; extra == 'dev' +Requires-Dist: tox ; extra == 'dev' +Requires-Dist: sphinx ; extra == 'dev' +Requires-Dist: pallets-sphinx-themes ; extra == 'dev' +Requires-Dist: sphinx-issues ; extra == 'dev' +Provides-Extra: watchdog +Requires-Dist: watchdog ; extra == 'watchdog' + +Werkzeug +======== + +*werkzeug* German noun: "tool". Etymology: *werk* ("work"), *zeug* ("stuff") + +Werkzeug is a comprehensive `WSGI`_ web application library. It began as +a simple collection of various utilities for WSGI applications and has +become one of the most advanced WSGI utility libraries. + +It includes: + +- An interactive debugger that allows inspecting stack traces and + source code in the browser with an interactive interpreter for any + frame in the stack. +- A full-featured request object with objects to interact with + headers, query args, form data, files, and cookies. +- A response object that can wrap other WSGI applications and handle + streaming data. +- A routing system for matching URLs to endpoints and generating URLs + for endpoints, with an extensible system for capturing variables + from URLs. +- HTTP utilities to handle entity tags, cache control, dates, user + agents, cookies, files, and more. +- A threaded WSGI server for use while developing applications + locally. +- A test client for simulating HTTP requests during testing without + requiring running a server. + +Werkzeug is Unicode aware and doesn't enforce any dependencies. It is up +to the developer to choose a template engine, database adapter, and even +how to handle requests. It can be used to build all sorts of end user +applications such as blogs, wikis, or bulletin boards. + +`Flask`_ wraps Werkzeug, using it to handle the details of WSGI while +providing more structure and patterns for defining powerful +applications. + + +Installing +---------- + +Install and update using `pip`_: + +.. code-block:: text + + pip install -U Werkzeug + + +A Simple Example +---------------- + +.. code-block:: python + + from werkzeug.wrappers import Request, Response + + @Request.application + def application(request): + return Response('Hello, World!') + + if __name__ == '__main__': + from werkzeug.serving import run_simple + run_simple('localhost', 4000, application) + + +Links +----- + +- Website: https://palletsprojects.com/p/werkzeug/ +- Documentation: https://werkzeug.palletsprojects.com/ +- Releases: https://pypi.org/project/Werkzeug/ +- Code: https://github.com/pallets/werkzeug +- Issue tracker: https://github.com/pallets/werkzeug/issues +- Test status: https://dev.azure.com/pallets/werkzeug/_build +- Official chat: https://discord.gg/t6rrQZH + +.. _WSGI: https://wsgi.readthedocs.io/en/latest/ +.. _Flask: https://www.palletsprojects.com/p/flask/ +.. _pip: https://pip.pypa.io/en/stable/quickstart/ + + diff --git a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/RECORD b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/RECORD new file mode 100644 index 0000000..9bc5975 --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/RECORD @@ -0,0 +1,101 @@ +Werkzeug-1.0.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +Werkzeug-1.0.1.dist-info/LICENSE.rst,sha256=O0nc7kEF6ze6wQ-vG-JgQI_oXSUrjp3y4JefweCUQ3s,1475 +Werkzeug-1.0.1.dist-info/METADATA,sha256=d0zmVNa4UC2-nAo2A8_81oiy123D6JTGRSuY_Ymgyt4,4730 +Werkzeug-1.0.1.dist-info/RECORD,, +Werkzeug-1.0.1.dist-info/WHEEL,sha256=kGT74LWyRUZrL4VgLh6_g12IeVl_9u9ZVhadrgXZUEY,110 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a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/WHEEL b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/WHEEL new file mode 100644 index 0000000..ef99c6c --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.34.2) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/top_level.txt b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/top_level.txt new file mode 100644 index 0000000..6fe8da8 --- /dev/null +++ b/matteo_env/Lib/site-packages/Werkzeug-1.0.1.dist-info/top_level.txt @@ -0,0 +1 @@ +werkzeug diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/INSTALLER b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/LICENSE b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/LICENSE new file mode 100644 index 0000000..a612ad9 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/METADATA b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/METADATA new file mode 100644 index 0000000..4fc45ea --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/METADATA @@ -0,0 +1,334 @@ +Metadata-Version: 2.1 +Name: bidict +Version: 0.21.2 +Summary: The bidirectional mapping library for Python. +Home-page: https://bidict.readthedocs.io +Author: Joshua Bronson +Author-email: jabronson@gmail.com +License: MPL 2.0 +Keywords: dict dictionary mapping datastructure bimap bijection bijective injective inverse reverse bidirectional two-way 2-way +Platform: UNKNOWN +Classifier: Development Status :: 4 - Beta +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0) +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python :: 3 :: Only +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Requires-Python: >=3.6 +Description-Content-Type: text/x-rst +Provides-Extra: coverage +Requires-Dist: coverage (<6) ; extra == 'coverage' +Requires-Dist: pytest-cov (<3) ; extra == 'coverage' +Provides-Extra: dev +Requires-Dist: setuptools-scm ; extra == 'dev' +Requires-Dist: hypothesis (<6) ; extra == 'dev' +Requires-Dist: py (<2) ; extra == 'dev' +Requires-Dist: pytest (<7) ; extra == 'dev' +Requires-Dist: pytest-benchmark (<4,>=3.2.0) ; extra == 'dev' +Requires-Dist: sortedcollections (<2) ; extra == 'dev' +Requires-Dist: sortedcontainers (<3) ; extra == 'dev' +Requires-Dist: Sphinx (<4) ; extra == 'dev' +Requires-Dist: sphinx-autodoc-typehints (<2) ; extra == 'dev' +Requires-Dist: coverage (<6) ; extra == 'dev' +Requires-Dist: pytest-cov (<3) ; extra == 'dev' +Requires-Dist: pre-commit (<3) ; extra == 'dev' +Requires-Dist: tox (<4) ; extra == 'dev' +Provides-Extra: docs +Requires-Dist: Sphinx (<4) ; extra == 'docs' +Requires-Dist: sphinx-autodoc-typehints (<2) ; extra == 'docs' +Provides-Extra: precommit +Requires-Dist: pre-commit (<3) ; extra == 'precommit' +Provides-Extra: test +Requires-Dist: hypothesis (<6) ; extra == 'test' +Requires-Dist: py (<2) ; extra == 'test' +Requires-Dist: pytest (<7) ; extra == 'test' +Requires-Dist: pytest-benchmark (<4,>=3.2.0) ; extra == 'test' +Requires-Dist: sortedcollections (<2) ; extra == 'test' +Requires-Dist: sortedcontainers (<3) ; extra == 'test' +Requires-Dist: Sphinx (<4) ; extra == 'test' +Requires-Dist: sphinx-autodoc-typehints (<2) ; extra == 'test' + +.. Forward declarations for all the custom interpreted text roles that + Sphinx defines and that are used below. This helps Sphinx-unaware tools + (e.g. rst2html, PyPI's and GitHub's renderers, etc.). +.. role:: doc + +.. Use :doc: rather than :ref: references below for better interop as well. + + +``bidict`` +========== + +The bidirectional mapping library for Python. + +.. image:: https://raw.githubusercontent.com/jab/bidict/master/assets/logo-sm.png + :target: https://bidict.readthedocs.io/ + :alt: bidict logo + + +Status +------ + +.. image:: https://img.shields.io/pypi/v/bidict.svg + :target: https://pypi.org/project/bidict + :alt: Latest release + +.. image:: https://img.shields.io/readthedocs/bidict/master.svg + :target: https://bidict.readthedocs.io/en/master/ + :alt: Documentation + +.. image:: https://api.travis-ci.org/jab/bidict.svg?branch=master + :target: https://travis-ci.org/jab/bidict + :alt: Travis-CI build status + +.. image:: https://codecov.io/gh/jab/bidict/branch/master/graph/badge.svg + :target: https://codecov.io/gh/jab/bidict + :alt: Test coverage + +.. Hide to reduce clutter + .. image:: https://img.shields.io/lgtm/alerts/github/jab/bidict.svg + :target: https://lgtm.com/projects/g/jab/bidict/ + :alt: LGTM alerts + .. image:: https://bestpractices.coreinfrastructure.org/projects/2354/badge + :target: https://bestpractices.coreinfrastructure.org/en/projects/2354 + :alt: CII best practices badge + .. image:: https://img.shields.io/badge/tidelift-pro%20support-orange.svg + :target: https://tidelift.com/subscription/pkg/pypi-bidict?utm_source=pypi-bidict&utm_medium=referral&utm_campaign=docs + :alt: Paid support available via Tidelift + .. image:: https://ci.appveyor.com/api/projects/status/gk133415udncwto3/branch/master?svg=true + :target: https://ci.appveyor.com/project/jab/bidict + :alt: AppVeyor (Windows) build status + .. image:: https://img.shields.io/pypi/pyversions/bidict.svg + :target: https://pypi.org/project/bidict + :alt: Supported Python versions + .. image:: https://img.shields.io/pypi/implementation/bidict.svg + :target: https://pypi.org/project/bidict + :alt: Supported Python implementations + +.. image:: https://img.shields.io/pypi/l/bidict.svg + :target: https://raw.githubusercontent.com/jab/bidict/master/LICENSE + :alt: License + +.. image:: https://static.pepy.tech/badge/bidict + :target: https://pepy.tech/project/bidict + :alt: PyPI Downloads + + +``bidict``: +^^^^^^^^^^^ + +- has been used for many years by several teams at + **Google, Venmo, CERN, Bank of America Merrill Lynch, Bloomberg, Two Sigma,** and many others +- has carefully designed APIs for + **safety, simplicity, flexibility, and ergonomics** +- is **fast, lightweight, and has no runtime dependencies** other than Python's standard library +- **integrates natively** with Python’s ``collections.abc`` interfaces +- provides **type hints** for all public APIs +- is implemented in **concise, well-factored, pure (PyPy-compatible) Python code** + that is **optimized for running efficiently** + as well as for **reading and learning** [#fn-learning]_ +- has **extensive docs and test coverage** + (including property-based tests and benchmarks) + run continuously on all supported Python versions + + +Note: Python 3 Required +~~~~~~~~~~~~~~~~~~~~~~~ + +As promised in the 0.18.2 release (see :doc:`changelog` [#fn-changelog]_), +**Python 2 is no longer supported**. +Version 0.18.3 +is the last release of ``bidict`` that supports Python 2. +This makes ``bidict`` more efficient on Python 3 +and enables further improvement to bidict in the future. +See `python3statement.org `__ +for more info. + + +Installation +------------ + +``pip install bidict`` + + +Quick Start +----------- + +.. code:: python + + >>> from bidict import bidict + >>> element_by_symbol = bidict({'H': 'hydrogen'}) + >>> element_by_symbol['H'] + 'hydrogen' + >>> element_by_symbol.inverse['hydrogen'] + 'H' + + +For more usage documentation, +head to the :doc:`intro` [#fn-intro]_ +and proceed from there. + + +Community Support +----------------- + +.. image:: https://img.shields.io/badge/chat-on%20gitter-5AB999.svg?logo=gitter-white + :target: https://gitter.im/jab/bidict + :alt: Chat + +If you are thinking of using ``bidict`` in your work, +or if you have any questions, comments, or suggestions, +I'd love to know about your use case +and provide as much voluntary support for it as possible. + +Please feel free to leave a message in the +`chatroom `__ +or open a new issue on GitHub. +You can search through +`existing issues `__ +before creating a new one +in case your questions or concerns have been adressed there already. + + +Enterprise-Grade Support via Tidelift +------------------------------------- + +.. image:: https://img.shields.io/badge/tidelift-pro%20support-orange.svg + :target: https://tidelift.com/subscription/pkg/pypi-bidict?utm_source=pypi-bidict&utm_medium=referral&utm_campaign=readme + :alt: Paid support available via Tidelift + +If your use case requires a greater level of support, +enterprise-grade support for ``bidict`` can be obtained via the +`Tidelift subscription `__. + + +Notice of Usage +--------------- + +If you use ``bidict``, +and especially if your usage or your organization is significant in some way, +please let me know. + +You can: + +- `star bidict on GitHub `__ +- `create an issue `__ +- leave a message in the `chat room `__ +- `email me `__ + + +Changelog +--------- + +See the :doc:`changelog` [#fn-changelog]_ +for a history of notable changes to ``bidict``. + + +Release Notifications +--------------------- + +.. duplicated in CHANGELOG.rst: + (would use `.. include::` but GitHub doesn't understand it) + +.. image:: https://img.shields.io/badge/libraries.io-subscribe-5BC0DF.svg + :target: https://libraries.io/pypi/bidict + :alt: Follow on libraries.io + +Subscribe to releases +`on GitHub `__ or +`libraries.io `__ +to be notified when new versions of ``bidict`` are released. + + +Learning from ``bidict`` +------------------------ + +One of the best things about ``bidict`` +is that it touches a surprising number of +interesting Python corners, +especially given its small size and scope. + +Check out :doc:`learning-from-bidict` [#fn-learning]_ +if you're interested in learning more. + + +Contributing +------------ + +``bidict`` is currently a one-person operation +maintained on a voluntary basis. + +Your help would be most welcome! + + +Reviewers Wanted! +^^^^^^^^^^^^^^^^^ + +One of the most valuable ways to contribute to ``bidict`` – +and to explore some interesting Python corners [#fn-learning]_ +while you're at it – +is to review the relatively small codebase. + +Please create an issue or pull request with any improvements you'd propose +or any other results you found. +Submitting a `draft PR `__ +with feedback in inline code comments, or a +`"Review results" issue `__, +would each work well. + +You can also ++1 `this issue `__ +to sign up to give feedback on future proposed changes +that are in need of a reviewer. + + +Giving Back +^^^^^^^^^^^ + +.. duplicated in CONTRIBUTING.rst + (would use `.. include::` but GitHub doesn't understand it) + +``bidict`` is the product of hundreds of hours of unpaid, voluntary work. + +If ``bidict`` has helped you accomplish your work, +especially work you've been paid for, +please consider chipping in toward the costs +of its maintenance and development +and/or ask your organization to do the same. + +.. image:: https://raw.githubusercontent.com/jab/bidict/master/assets/support-on-gumroad.png + :target: https://gumroad.com/l/bidict + :alt: Support bidict + + +Finding Documentation +--------------------- + +If you're viewing this on ``__, +note that multiple versions of the documentation are available, +and you can choose a different version using the popup menu at the bottom-right. +Please make sure you're viewing the version of the documentation +that corresponds to the version of ``bidict`` you'd like to use. + +If you're viewing this on GitHub, PyPI, or some other place +that can't render and link this documentation properly +and are seeing broken links, +try these alternate links instead: + +.. [#fn-learning] ``__ | ``__ + +.. [#fn-changelog] ``__ | ``__ + +.. [#fn-intro] ``__ | ``__ + + +---- + +Next: :doc:`intro` [#fn-intro]_ + + diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/RECORD b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/RECORD new file mode 100644 index 0000000..cb526f6 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/RECORD @@ -0,0 +1,41 @@ +bidict-0.21.2.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +bidict-0.21.2.dist-info/LICENSE,sha256=HyVuytGSiAUQ6ErWBHTqt1iSGHhLmlC8fO7jTCuR8dU,16725 +bidict-0.21.2.dist-info/METADATA,sha256=6p33oEnK6iIEBM4o7wQLGPUyeYHtc-yEW6_s05N3d5c,11630 +bidict-0.21.2.dist-info/RECORD,, +bidict-0.21.2.dist-info/WHEEL,sha256=ADKeyaGyKF5DwBNE0sRE5pvW-bSkFMJfBuhzZ3rceP4,110 +bidict-0.21.2.dist-info/top_level.txt,sha256=WuQO02jp0ODioS7sJoaHg3JJ5_3h6Sxo9RITvNGPYmc,7 +bidict/__init__.py,sha256=A2ZUK4jTHNN6T3QUaSh7xuIwc-Ytgw6gVLHNx07D7Fo,3910 +bidict/__pycache__/__init__.cpython-38.pyc,, +bidict/__pycache__/_abc.cpython-38.pyc,, +bidict/__pycache__/_base.cpython-38.pyc,, +bidict/__pycache__/_bidict.cpython-38.pyc,, +bidict/__pycache__/_delegating.cpython-38.pyc,, +bidict/__pycache__/_dup.cpython-38.pyc,, +bidict/__pycache__/_exc.cpython-38.pyc,, +bidict/__pycache__/_frozenbidict.cpython-38.pyc,, +bidict/__pycache__/_frozenordered.cpython-38.pyc,, +bidict/__pycache__/_iter.cpython-38.pyc,, +bidict/__pycache__/_mut.cpython-38.pyc,, +bidict/__pycache__/_named.cpython-38.pyc,, +bidict/__pycache__/_orderedbase.cpython-38.pyc,, +bidict/__pycache__/_orderedbidict.cpython-38.pyc,, +bidict/__pycache__/_typing.cpython-38.pyc,, +bidict/__pycache__/_version.cpython-38.pyc,, +bidict/__pycache__/metadata.cpython-38.pyc,, +bidict/_abc.py,sha256=irEWsolFCp8ps77OKmWwB0gTrpXc5be0RBdHaQoPybk,4626 +bidict/_base.py,sha256=k7oLFwb_6ZMHMhfI217hnM-WfJ4oxVMTol1BG14E3cA,16180 +bidict/_bidict.py,sha256=85G1TyWeMZLE70HK-qwCVug-bCdaI3bIeoBxJzwSkkQ,2005 +bidict/_delegating.py,sha256=UibZewwgmN8iBECZtjELwKl5zhcuxYnyy2gsiAXBe3c,1313 +bidict/_dup.py,sha256=j0DSseguIdCgAhqxm0Zn2887110zx70F19Lvw7hiayg,1819 +bidict/_exc.py,sha256=nKOGqxqOvyjheh-Pgo-dZZWRRvPEWYyD8Ukm5XR8WNk,1053 +bidict/_frozenbidict.py,sha256=IYMIzsm9pAXTS819Tw7z_VTLIEZir4oLJbrcRc5yFP8,2494 +bidict/_frozenordered.py,sha256=E4kzBIoriZLuth9I1ll57KelvUN_xDAvZjQH7GNdn30,3224 +bidict/_iter.py,sha256=F9zoHs-IrkucujbRGnMJslH_Gc_Qrla4Mk1sOvn7ELg,2333 +bidict/_mut.py,sha256=MBXzglmeNJniRbdZ1C0Tx14pcsaBdi1NPaaFGIzZEpg,7352 +bidict/_named.py,sha256=_WQjoz9pE1d_HwVQX05vn5TthOREOw49yDdFSs5lvU4,3784 +bidict/_orderedbase.py,sha256=yMIRfDtY5DQJoAeI5YvIW49O42MuKqK8qxDrczr1NQY,12196 +bidict/_orderedbidict.py,sha256=tkfAMxehLetMqTrGoQq9KfdOpgRdhzWqp2lmk6_4vL0,3409 +bidict/_typing.py,sha256=3lq-wZhWGyn3q7euw6YK7LwFnxOVB1qdqX1x1HcW4Ng,862 +bidict/_version.py,sha256=e4Wu3F4t-gj1TaiLYadYEQ_3R8pNGz4Xi1K4eN1WFIw,117 +bidict/metadata.py,sha256=htEXequ7kpMnWeRKrl4cUJZBQIbBegxgu_bxFZ0pIkY,1812 +bidict/py.typed,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0 diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/WHEEL b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/WHEEL new file mode 100644 index 0000000..6d38aa0 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.35.1) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/top_level.txt b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/top_level.txt new file mode 100644 index 0000000..6ff5b04 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict-0.21.2.dist-info/top_level.txt @@ -0,0 +1 @@ +bidict diff --git a/matteo_env/Lib/site-packages/bidict/__init__.py b/matteo_env/Lib/site-packages/bidict/__init__.py new file mode 100644 index 0000000..27af47d --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/__init__.py @@ -0,0 +1,94 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# Current: __init__.py Next: _abc.py → +#============================================================================== + + +"""The bidirectional mapping library for Python. + +bidict by example: + +.. code-block:: python + + >>> from bidict import bidict + >>> element_by_symbol = bidict({'H': 'hydrogen'}) + >>> element_by_symbol['H'] + 'hydrogen' + >>> element_by_symbol.inverse['hydrogen'] + 'H' + + +Please see https://github.com/jab/bidict for the most up-to-date code and +https://bidict.readthedocs.io for the most up-to-date documentation +if you are reading this elsewhere. + + +.. :copyright: (c) 2009-2020 Joshua Bronson. +.. :license: MPLv2. See LICENSE for details. +""" + +# Use private aliases to not re-export these publicly (for Sphinx automodule with imported-members). +from sys import version_info as _version_info + + +if _version_info < (3, 6): # pragma: no cover + raise ImportError('Python 3.6+ is required.') + +# The rest of this file only collects functionality implemented in the rest of the +# source for the purposes of exporting it under the `bidict` module namespace. +# flake8: noqa: F401 (imported but unused) +from ._abc import BidirectionalMapping, MutableBidirectionalMapping +from ._base import BidictBase +from ._mut import MutableBidict +from ._bidict import bidict +from ._frozenbidict import frozenbidict +from ._frozenordered import FrozenOrderedBidict +from ._named import namedbidict +from ._orderedbase import OrderedBidictBase +from ._orderedbidict import OrderedBidict +from ._dup import ON_DUP_DEFAULT, ON_DUP_RAISE, ON_DUP_DROP_OLD, RAISE, DROP_OLD, DROP_NEW, OnDup, OnDupAction +from ._exc import BidictException, DuplicationError, KeyDuplicationError, ValueDuplicationError, KeyAndValueDuplicationError +from ._iter import inverted +from .metadata import ( + __author__, __maintainer__, __copyright__, __email__, __credits__, __url__, + __license__, __status__, __description__, __keywords__, __version__, __version_info__, +) + +# Set __module__ of re-exported classes to the 'bidict' top-level module name +# so that private/internal submodules are not exposed to users e.g. in repr strings. +_locals = tuple(locals().items()) +for _name, _obj in _locals: # pragma: no cover + if not getattr(_obj, '__module__', '').startswith('bidict.'): + continue + try: + _obj.__module__ = 'bidict' + except AttributeError as exc: # raised when __module__ is read-only (as in OnDup) + pass + + +# * Code review nav * +#============================================================================== +# Current: __init__.py Next: _abc.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_abc.py b/matteo_env/Lib/site-packages/bidict/_abc.py new file mode 100644 index 0000000..9a30679 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_abc.py @@ -0,0 +1,105 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: __init__.py Current: _abc.py Next: _base.py → +#============================================================================== + + +"""Provide the :class:`BidirectionalMapping` abstract base class.""" + +import typing as _t +from abc import abstractmethod + +from ._typing import KT, VT + + +class BidirectionalMapping(_t.Mapping[KT, VT]): + """Abstract base class (ABC) for bidirectional mapping types. + + Extends :class:`collections.abc.Mapping` primarily by adding the + (abstract) :attr:`inverse` property, + which implementors of :class:`BidirectionalMapping` + should override to return a reference to the inverse + :class:`BidirectionalMapping` instance. + """ + + __slots__ = () + + @property + @abstractmethod + def inverse(self) -> 'BidirectionalMapping[VT, KT]': + """The inverse of this bidirectional mapping instance. + + *See also* :attr:`bidict.BidictBase.inverse`, :attr:`bidict.BidictBase.inv` + + :raises NotImplementedError: Meant to be overridden in subclasses. + """ + # The @abstractproperty decorator prevents BidirectionalMapping subclasses from being + # instantiated unless they override this method. So users shouldn't be able to get to the + # point where they can unintentionally call this implementation of .inverse on something + # anyway. Could leave the method body empty, but raise NotImplementedError so it's extra + # clear there's no reason to call this implementation (e.g. via super() after overriding). + raise NotImplementedError + + def __inverted__(self) -> _t.Iterator[_t.Tuple[VT, KT]]: + """Get an iterator over the items in :attr:`inverse`. + + This is functionally equivalent to iterating over the items in the + forward mapping and inverting each one on the fly, but this provides a + more efficient implementation: Assuming the already-inverted items + are stored in :attr:`inverse`, just return an iterator over them directly. + + Providing this default implementation enables external functions, + particularly :func:`~bidict.inverted`, to use this optimized + implementation when available, instead of having to invert on the fly. + + *See also* :func:`bidict.inverted` + """ + return iter(self.inverse.items()) + + def values(self) -> _t.AbstractSet[VT]: # type: ignore # https://github.com/python/typeshed/issues/4435 + """A set-like object providing a view on the contained values. + + Override the implementation inherited from + :class:`~collections.abc.Mapping`. + Because the values of a :class:`~bidict.BidirectionalMapping` + are the keys of its inverse, + this returns a :class:`~collections.abc.KeysView` + rather than a :class:`~collections.abc.ValuesView`, + which has the advantages of constant-time containment checks + and supporting set operations. + """ + return self.inverse.keys() + + +class MutableBidirectionalMapping(BidirectionalMapping[KT, VT], _t.MutableMapping[KT, VT]): + """Abstract base class (ABC) for mutable bidirectional mapping types.""" + + __slots__ = () + + +# * Code review nav * +#============================================================================== +# ← Prev: __init__.py Current: _abc.py Next: _base.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_base.py b/matteo_env/Lib/site-packages/bidict/_base.py new file mode 100644 index 0000000..f100805 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_base.py @@ -0,0 +1,383 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _abc.py Current: _base.py Next: _frozenbidict.py → +#============================================================================== + + +"""Provide :class:`BidictBase`.""" + +import typing as _t +from collections import namedtuple +from copy import copy +from weakref import ref + +from ._abc import BidirectionalMapping +from ._dup import ON_DUP_DEFAULT, RAISE, DROP_OLD, DROP_NEW, OnDup +from ._exc import DuplicationError, KeyDuplicationError, ValueDuplicationError, KeyAndValueDuplicationError +from ._iter import _iteritems_args_kw +from ._typing import _NONE, KT, VT, OKT, OVT, IterItems, MapOrIterItems + + +_WriteResult = namedtuple('_WriteResult', 'key val oldkey oldval') +_DedupResult = namedtuple('_DedupResult', 'isdupkey isdupval invbyval fwdbykey') +_NODUP = _DedupResult(False, False, _NONE, _NONE) + +BT = _t.TypeVar('BT', bound='BidictBase') # typevar for BidictBase.copy + + +class BidictBase(BidirectionalMapping[KT, VT]): + """Base class implementing :class:`BidirectionalMapping`.""" + + __slots__ = ['_fwdm', '_invm', '_inv', '_invweak', '_hash', '__weakref__'] + + #: The default :class:`~bidict.OnDup` + #: that governs behavior when a provided item + #: duplicates the key or value of other item(s). + #: + #: *See also* :ref:`basic-usage:Values Must Be Unique`, :doc:`extending` + on_dup = ON_DUP_DEFAULT + + _fwdm_cls = dict #: class of the backing forward mapping + _invm_cls = dict #: class of the backing inverse mapping + + #: The object used by :meth:`__repr__` for printing the contained items. + _repr_delegate = dict + + def __init_subclass__(cls, **kw): + super().__init_subclass__(**kw) + # Compute and set _inv_cls, the inverse of this bidict class. + if '_inv_cls' in cls.__dict__: + return + if cls._fwdm_cls is cls._invm_cls: + cls._inv_cls = cls + return + inv_cls = type(cls.__name__ + 'Inv', cls.__bases__, { + **cls.__dict__, + '_inv_cls': cls, + '_fwdm_cls': cls._invm_cls, + '_invm_cls': cls._fwdm_cls, + }) + cls._inv_cls = inv_cls + + @_t.overload + def __init__(self, __arg: _t.Mapping[KT, VT], **kw: VT) -> None: ... + @_t.overload + def __init__(self, __arg: IterItems[KT, VT], **kw: VT) -> None: ... + @_t.overload + def __init__(self, **kw: VT) -> None: ... + def __init__(self, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + """Make a new bidirectional dictionary. + The signature behaves like that of :class:`dict`. + Items passed in are added in the order they are passed, + respecting the :attr:`on_dup` class attribute in the process. + """ + #: The backing :class:`~collections.abc.Mapping` + #: storing the forward mapping data (*key* → *value*). + self._fwdm: _t.Dict[KT, VT] = self._fwdm_cls() + #: The backing :class:`~collections.abc.Mapping` + #: storing the inverse mapping data (*value* → *key*). + self._invm: _t.Dict[VT, KT] = self._invm_cls() + self._init_inv() + if args or kw: + self._update(True, self.on_dup, *args, **kw) + + def _init_inv(self) -> None: + # Create the inverse bidict instance via __new__, bypassing its __init__ so that its + # _fwdm and _invm can be assigned to this bidict's _invm and _fwdm. Store it in self._inv, + # which holds a strong reference to a bidict's inverse, if one is available. + self._inv = inv = self._inv_cls.__new__(self._inv_cls) # type: ignore + inv._fwdm = self._invm + inv._invm = self._fwdm + # Only give the inverse a weak reference to this bidict to avoid creating a reference cycle, + # stored in the _invweak attribute. See also the docs in + # :ref:`addendum:Bidict Avoids Reference Cycles` + inv._inv = None + inv._invweak = ref(self) + # Since this bidict has a strong reference to its inverse already, set its _invweak to None. + self._invweak = None + + @property + def _isinv(self) -> bool: + return self._inv is None + + @property + def inverse(self) -> 'BidictBase[VT, KT]': + """The inverse of this bidict.""" + # Resolve and return a strong reference to the inverse bidict. + # One may be stored in self._inv already. + if self._inv is not None: + return self._inv # type: ignore + # Otherwise a weakref is stored in self._invweak. Try to get a strong ref from it. + assert self._invweak is not None + inv = self._invweak() + if inv is not None: + return inv + # Refcount of referent must have dropped to zero, as in `bidict().inv.inv`. Init a new one. + self._init_inv() # Now this bidict will retain a strong ref to its inverse. + return self._inv + + #: Alias for :attr:`inverse`. + inv = inverse + + def __getstate__(self) -> dict: + """Needed to enable pickling due to use of :attr:`__slots__` and weakrefs. + + *See also* :meth:`object.__getstate__` + """ + state = {} + for cls in self.__class__.__mro__: + slots = getattr(cls, '__slots__', ()) + for slot in slots: + if hasattr(self, slot): + state[slot] = getattr(self, slot) + # weakrefs can't be pickled. + state.pop('_invweak', None) # Added back in __setstate__ via _init_inv call. + state.pop('__weakref__', None) # Not added back in __setstate__. Python manages this one. + return state + + def __setstate__(self, state: dict) -> None: + """Implemented because use of :attr:`__slots__` would prevent unpickling otherwise. + + *See also* :meth:`object.__setstate__` + """ + for slot, value in state.items(): + setattr(self, slot, value) + self._init_inv() + + def __repr__(self) -> str: + """See :func:`repr`.""" + clsname = self.__class__.__name__ + if not self: + return f'{clsname}()' + return f'{clsname}({self._repr_delegate(self.items())})' + + # The inherited Mapping.__eq__ implementation would work, but it's implemented in terms of an + # inefficient ``dict(self.items()) == dict(other.items())`` comparison, so override it with a + # more efficient implementation. + def __eq__(self, other: object) -> bool: + """*x.__eq__(other)　⟺　x == other* + + Equivalent to *dict(x.items()) == dict(other.items())* + but more efficient. + + Note that :meth:`bidict's __eq__() ` implementation + is inherited by subclasses, + in particular by the ordered bidict subclasses, + so even with ordered bidicts, + :ref:`== comparison is order-insensitive `. + + *See also* :meth:`bidict.FrozenOrderedBidict.equals_order_sensitive` + """ + if not isinstance(other, _t.Mapping) or len(self) != len(other): + return False + selfget = self.get + return all(selfget(k, _NONE) == v for (k, v) in other.items()) # type: ignore + + # The following methods are mutating and so are not public. But they are implemented in this + # non-mutable base class (rather than the mutable `bidict` subclass) because they are used here + # during initialization (starting with the `_update` method). (Why is this? Because `__init__` + # and `update` share a lot of the same behavior (inserting the provided items while respecting + # `on_dup`), so it makes sense for them to share implementation too.) + def _pop(self, key: KT) -> VT: + val = self._fwdm.pop(key) + del self._invm[val] + return val + + def _put(self, key: KT, val: VT, on_dup: OnDup) -> None: + dedup_result = self._dedup_item(key, val, on_dup) + if dedup_result is not None: + self._write_item(key, val, dedup_result) + + def _dedup_item(self, key: KT, val: VT, on_dup: OnDup) -> _t.Optional[_DedupResult]: + """Check *key* and *val* for any duplication in self. + + Handle any duplication as per the passed in *on_dup*. + + (key, val) already present is construed as a no-op, not a duplication. + + If duplication is found and the corresponding :class:`~bidict.OnDupAction` is + :attr:`~bidict.DROP_NEW`, return None. + + If duplication is found and the corresponding :class:`~bidict.OnDupAction` is + :attr:`~bidict.RAISE`, raise the appropriate error. + + If duplication is found and the corresponding :class:`~bidict.OnDupAction` is + :attr:`~bidict.DROP_OLD`, + or if no duplication is found, + return the :class:`_DedupResult` *(isdupkey, isdupval, oldkey, oldval)*. + """ + fwdm = self._fwdm + invm = self._invm + oldval: OVT = fwdm.get(key, _NONE) + oldkey: OKT = invm.get(val, _NONE) + isdupkey = oldval is not _NONE + isdupval = oldkey is not _NONE + dedup_result = _DedupResult(isdupkey, isdupval, oldkey, oldval) + if isdupkey and isdupval: + if self._already_have(key, val, oldkey, oldval): + # (key, val) duplicates an existing item -> no-op. + return None + # key and val each duplicate a different existing item. + if on_dup.kv is RAISE: + raise KeyAndValueDuplicationError(key, val) + if on_dup.kv is DROP_NEW: + return None + assert on_dup.kv is DROP_OLD + # Fall through to the return statement on the last line. + elif isdupkey: + if on_dup.key is RAISE: + raise KeyDuplicationError(key) + if on_dup.key is DROP_NEW: + return None + assert on_dup.key is DROP_OLD + # Fall through to the return statement on the last line. + elif isdupval: + if on_dup.val is RAISE: + raise ValueDuplicationError(val) + if on_dup.val is DROP_NEW: + return None + assert on_dup.val is DROP_OLD + # Fall through to the return statement on the last line. + # else neither isdupkey nor isdupval. + return dedup_result + + @staticmethod + def _already_have(key: KT, val: VT, oldkey: OKT, oldval: OVT) -> bool: + # Overridden by _orderedbase.OrderedBidictBase. + isdup = oldkey == key + assert isdup == (oldval == val), f'{key} {val} {oldkey} {oldval}' + return isdup + + def _write_item(self, key: KT, val: VT, dedup_result: _DedupResult) -> _WriteResult: + # Overridden by _orderedbase.OrderedBidictBase. + isdupkey, isdupval, oldkey, oldval = dedup_result + fwdm = self._fwdm + invm = self._invm + fwdm[key] = val + invm[val] = key + if isdupkey: + del invm[oldval] + if isdupval: + del fwdm[oldkey] + return _WriteResult(key, val, oldkey, oldval) + + def _update(self, init: bool, on_dup: OnDup, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + # args[0] may be a generator that yields many items, so process input in a single pass. + if not args and not kw: + return + can_skip_dup_check = not self and not kw and isinstance(args[0], BidirectionalMapping) + if can_skip_dup_check: + self._update_no_dup_check(args[0]) # type: ignore + return + can_skip_rollback = init or RAISE not in on_dup + if can_skip_rollback: + self._update_no_rollback(on_dup, *args, **kw) + else: + self._update_with_rollback(on_dup, *args, **kw) + + def _update_no_dup_check(self, other: BidirectionalMapping[KT, VT]) -> None: + write_item = self._write_item + for (key, val) in other.items(): + write_item(key, val, _NODUP) + + def _update_no_rollback(self, on_dup: OnDup, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + put = self._put + for (key, val) in _iteritems_args_kw(*args, **kw): + put(key, val, on_dup) + + def _update_with_rollback(self, on_dup: OnDup, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + """Update, rolling back on failure.""" + writes: _t.List[_t.Tuple[_DedupResult, _WriteResult]] = [] + append_write = writes.append + dedup_item = self._dedup_item + write_item = self._write_item + for (key, val) in _iteritems_args_kw(*args, **kw): + try: + dedup_result = dedup_item(key, val, on_dup) + except DuplicationError: + undo_write = self._undo_write + for dedup_result, write_result in reversed(writes): + undo_write(dedup_result, write_result) + raise + if dedup_result is not None: + write_result = write_item(key, val, dedup_result) + append_write((dedup_result, write_result)) + + def _undo_write(self, dedup_result: _DedupResult, write_result: _WriteResult) -> None: + isdupkey, isdupval, _, _ = dedup_result + key, val, oldkey, oldval = write_result + if not isdupkey and not isdupval: + self._pop(key) + return + fwdm = self._fwdm + invm = self._invm + if isdupkey: + fwdm[key] = oldval + invm[oldval] = key + if not isdupval: + del invm[val] + if isdupval: + invm[val] = oldkey + fwdm[oldkey] = val + if not isdupkey: + del fwdm[key] + + def copy(self: BT) -> BT: + """A shallow copy.""" + # Could just ``return self.__class__(self)`` here instead, but the below is faster. It uses + # __new__ to create a copy instance while bypassing its __init__, which would result + # in copying this bidict's items into the copy instance one at a time. Instead, make whole + # copies of each of the backing mappings, and make them the backing mappings of the copy, + # avoiding copying items one at a time. + cp = self.__class__.__new__(self.__class__) + cp._fwdm = copy(self._fwdm) + cp._invm = copy(self._invm) + cp._init_inv() + return cp # type: ignore + + #: Used for the copy protocol. + #: *See also* the :mod:`copy` module + __copy__ = copy + + def __len__(self) -> int: + """The number of contained items.""" + return len(self._fwdm) + + def __iter__(self) -> _t.Iterator[KT]: + """Iterator over the contained keys.""" + return iter(self._fwdm) + + def __getitem__(self, key: KT) -> VT: + """*x.__getitem__(key)　⟺　x[key]*""" + return self._fwdm[key] + + +# Work around weakref slot with Generics bug on Python 3.6 (https://bugs.python.org/issue41451): +BidictBase.__slots__.remove('__weakref__') + +# * Code review nav * +#============================================================================== +# ← Prev: _abc.py Current: _base.py Next: _frozenbidict.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_bidict.py b/matteo_env/Lib/site-packages/bidict/_bidict.py new file mode 100644 index 0000000..5f559c3 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_bidict.py @@ -0,0 +1,51 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _mut.py Current: _bidict.py Next: _orderedbase.py → +#============================================================================== + + +"""Provide :class:`bidict`.""" + +import typing as _t + +from ._delegating import _DelegatingBidict +from ._mut import MutableBidict +from ._typing import KT, VT + + +class bidict(_DelegatingBidict[KT, VT], MutableBidict[KT, VT]): + """Base class for mutable bidirectional mappings.""" + + __slots__ = () + + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'bidict[VT, KT]': ... + + +# * Code review nav * +#============================================================================== +# ← Prev: _mut.py Current: _bidict.py Next: _orderedbase.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_delegating.py b/matteo_env/Lib/site-packages/bidict/_delegating.py new file mode 100644 index 0000000..a70183d --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_delegating.py @@ -0,0 +1,39 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +"""Provide :class:`_DelegatingBidict`.""" + +import typing as _t + +from ._base import BidictBase +from ._typing import KT, VT + + +class _DelegatingBidict(BidictBase[KT, VT]): + """Provide optimized implementations of several methods by delegating to backing dicts. + + Used to override less efficient implementations inherited by :class:`~collections.abc.Mapping`. + """ + + __slots__ = () + + def __iter__(self) -> _t.Iterator[KT]: + """Iterator over the contained keys.""" + return iter(self._fwdm) + + def keys(self) -> _t.KeysView[KT]: + """A set-like object providing a view on the contained keys.""" + return self._fwdm.keys() + + def values(self) -> _t.KeysView[VT]: # type: ignore # https://github.com/python/typeshed/issues/4435 + """A set-like object providing a view on the contained values.""" + return self._invm.keys() + + def items(self) -> _t.ItemsView[KT, VT]: + """A set-like object providing a view on the contained items.""" + return self._fwdm.items() diff --git a/matteo_env/Lib/site-packages/bidict/_dup.py b/matteo_env/Lib/site-packages/bidict/_dup.py new file mode 100644 index 0000000..ca44d2c --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_dup.py @@ -0,0 +1,58 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +"""Provide :class:`OnDup` and related functionality.""" + + +from collections import namedtuple +from enum import Enum + + +class OnDupAction(Enum): + """An action to take to prevent duplication from occurring.""" + + #: Raise a :class:`~bidict.DuplicationError`. + RAISE = 'RAISE' + #: Overwrite existing items with new items. + DROP_OLD = 'DROP_OLD' + #: Keep existing items and drop new items. + DROP_NEW = 'DROP_NEW' + + def __repr__(self) -> str: + return f'<{self.name}>' + + +RAISE = OnDupAction.RAISE +DROP_OLD = OnDupAction.DROP_OLD +DROP_NEW = OnDupAction.DROP_NEW + + +class OnDup(namedtuple('_OnDup', 'key val kv')): + r"""A 3-tuple of :class:`OnDupAction`\s specifying how to handle the 3 kinds of duplication. + + *See also* :ref:`basic-usage:Values Must Be Unique` + + If *kv* is not specified, *val* will be used for *kv*. + """ + + __slots__ = () + + def __new__(cls, key: OnDupAction = DROP_OLD, val: OnDupAction = RAISE, kv: OnDupAction = RAISE) -> 'OnDup': + """Override to provide user-friendly default values.""" + return super().__new__(cls, key, val, kv or val) + + +#: Default :class:`OnDup` used for the +#: :meth:`~bidict.bidict.__init__`, +#: :meth:`~bidict.bidict.__setitem__`, and +#: :meth:`~bidict.bidict.update` methods. +ON_DUP_DEFAULT = OnDup() +#: An :class:`OnDup` whose members are all :obj:`RAISE`. +ON_DUP_RAISE = OnDup(key=RAISE, val=RAISE, kv=RAISE) +#: An :class:`OnDup` whose members are all :obj:`DROP_OLD`. +ON_DUP_DROP_OLD = OnDup(key=DROP_OLD, val=DROP_OLD, kv=DROP_OLD) diff --git a/matteo_env/Lib/site-packages/bidict/_exc.py b/matteo_env/Lib/site-packages/bidict/_exc.py new file mode 100644 index 0000000..dd38d75 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_exc.py @@ -0,0 +1,35 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +"""Provide all bidict exceptions.""" + + +class BidictException(Exception): + """Base class for bidict exceptions.""" + + +class DuplicationError(BidictException): + """Base class for exceptions raised when uniqueness is violated + as per the :attr:~bidict.RAISE` :class:`~bidict.OnDupAction`. + """ + + +class KeyDuplicationError(DuplicationError): + """Raised when a given key is not unique.""" + + +class ValueDuplicationError(DuplicationError): + """Raised when a given value is not unique.""" + + +class KeyAndValueDuplicationError(KeyDuplicationError, ValueDuplicationError): + """Raised when a given item's key and value are not unique. + + That is, its key duplicates that of another item, + and its value duplicates that of a different other item. + """ diff --git a/matteo_env/Lib/site-packages/bidict/_frozenbidict.py b/matteo_env/Lib/site-packages/bidict/_frozenbidict.py new file mode 100644 index 0000000..d42ca4c --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_frozenbidict.py @@ -0,0 +1,58 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _base.py Current: _frozenbidict.py Next: _mut.py → +#============================================================================== + +"""Provide :class:`frozenbidict`, an immutable, hashable bidirectional mapping type.""" + +import typing as _t + +from ._delegating import _DelegatingBidict +from ._typing import KT, VT + + +class frozenbidict(_DelegatingBidict[KT, VT]): + """Immutable, hashable bidict type.""" + + __slots__ = () + + # Work around lack of support for higher-kinded types in mypy. + # Ref: https://github.com/python/typing/issues/548#issuecomment-621571821 + # Remove this and similar type stubs from other classes if support is ever added. + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'frozenbidict[VT, KT]': ... + + def __hash__(self) -> int: + """The hash of this bidict as determined by its items.""" + if getattr(self, '_hash', None) is None: + self._hash = _t.ItemsView(self)._hash() # type: ignore + return self._hash # type: ignore + + +# * Code review nav * +#============================================================================== +# ← Prev: _base.py Current: _frozenbidict.py Next: _mut.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_frozenordered.py b/matteo_env/Lib/site-packages/bidict/_frozenordered.py new file mode 100644 index 0000000..bd79c1e --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_frozenordered.py @@ -0,0 +1,75 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +#← Prev: _orderedbase.py Current: _frozenordered.py Next: _orderedbidict.py → +#============================================================================== + +"""Provide :class:`FrozenOrderedBidict`, an immutable, hashable, ordered bidict.""" + +import typing as _t + +from ._frozenbidict import frozenbidict +from ._orderedbase import OrderedBidictBase +from ._typing import KT, VT + + +class FrozenOrderedBidict(OrderedBidictBase[KT, VT]): + """Hashable, immutable, ordered bidict type.""" + + __slots__ = () + __hash__ = frozenbidict.__hash__ + + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'FrozenOrderedBidict[VT, KT]': ... + + # Assume the Python implementation's dict type is ordered (e.g. PyPy or CPython >= 3.6), so we + # can delegate to `_fwdm` and `_invm` for faster implementations of several methods. Both + # `_fwdm` and `_invm` will always be initialized with the provided items in the correct order, + # and since `FrozenOrderedBidict` is immutable, their respective orders can't get out of sync + # after a mutation. + def __iter__(self) -> _t.Iterator[KT]: + """Iterator over the contained keys in insertion order.""" + return self._iter() + + def _iter(self, *, reverse: bool = False) -> _t.Iterator[KT]: + if reverse: + return super()._iter(reverse=True) + return iter(self._fwdm._fwdm) + + def keys(self) -> _t.KeysView[KT]: + """A set-like object providing a view on the contained keys.""" + return self._fwdm._fwdm.keys() + + def values(self) -> _t.KeysView[VT]: # type: ignore + """A set-like object providing a view on the contained values.""" + return self._invm._fwdm.keys() + + # We can't delegate for items because values in `_fwdm` are nodes. + + +# * Code review nav * +#============================================================================== +#← Prev: _orderedbase.py Current: _frozenordered.py Next: _orderedbidict.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_iter.py b/matteo_env/Lib/site-packages/bidict/_iter.py new file mode 100644 index 0000000..32d4279 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_iter.py @@ -0,0 +1,67 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +"""Functions for iterating over items in a mapping.""" + +import typing as _t +from collections.abc import Mapping +from itertools import chain, repeat + +from ._typing import KT, VT, IterItems, MapOrIterItems + + +_NULL_IT = repeat(None, 0) # repeat 0 times -> raise StopIteration from the start + + +def _iteritems_mapping_or_iterable(arg: MapOrIterItems[KT, VT]) -> IterItems[KT, VT]: + """Yield the items in *arg*. + + If *arg* is a :class:`~collections.abc.Mapping`, return an iterator over its items. + Otherwise return an iterator over *arg* itself. + """ + return iter(arg.items() if isinstance(arg, Mapping) else arg) + + +def _iteritems_args_kw(*args: MapOrIterItems[KT, VT], **kw: VT) -> IterItems[KT, VT]: + """Yield the items from the positional argument (if given) and then any from *kw*. + + :raises TypeError: if more than one positional argument is given. + """ + args_len = len(args) + if args_len > 1: + raise TypeError(f'Expected at most 1 positional argument, got {args_len}') + itemchain = None + if args: + arg = args[0] + if arg: + itemchain = _iteritems_mapping_or_iterable(arg) + if kw: + iterkw = iter(kw.items()) + itemchain = chain(itemchain, iterkw) if itemchain else iterkw # type: ignore + return itemchain or _NULL_IT # type: ignore + + +@_t.overload +def inverted(arg: _t.Mapping[KT, VT]) -> IterItems[VT, KT]: ... +@_t.overload +def inverted(arg: IterItems[KT, VT]) -> IterItems[VT, KT]: ... +def inverted(arg: MapOrIterItems[KT, VT]) -> IterItems[VT, KT]: + """Yield the inverse items of the provided object. + + If *arg* has a :func:`callable` ``__inverted__`` attribute, + return the result of calling it. + + Otherwise, return an iterator over the items in `arg`, + inverting each item on the fly. + + *See also* :attr:`bidict.BidirectionalMapping.__inverted__` + """ + inv = getattr(arg, '__inverted__', None) + if callable(inv): + return inv() # type: ignore + return ((val, key) for (key, val) in _iteritems_mapping_or_iterable(arg)) diff --git a/matteo_env/Lib/site-packages/bidict/_mut.py b/matteo_env/Lib/site-packages/bidict/_mut.py new file mode 100644 index 0000000..aa4e370 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_mut.py @@ -0,0 +1,188 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _frozenbidict.py Current: _mut.py Next: _bidict.py → +#============================================================================== + + +"""Provide :class:`MutableBidict`.""" + +import typing as _t + +from ._abc import MutableBidirectionalMapping +from ._base import BidictBase +from ._dup import OnDup, ON_DUP_RAISE, ON_DUP_DROP_OLD +from ._typing import _NONE, KT, VT, VDT, IterItems, MapOrIterItems + + +class MutableBidict(BidictBase[KT, VT], MutableBidirectionalMapping[KT, VT]): + """Base class for mutable bidirectional mappings.""" + + __slots__ = () + + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'MutableBidict[VT, KT]': ... + + def __delitem__(self, key: KT) -> None: + """*x.__delitem__(y)　⟺　del x[y]*""" + self._pop(key) + + def __setitem__(self, key: KT, val: VT) -> None: + """Set the value for *key* to *val*. + + If *key* is already associated with *val*, this is a no-op. + + If *key* is already associated with a different value, + the old value will be replaced with *val*, + as with dict's :meth:`__setitem__`. + + If *val* is already associated with a different key, + an exception is raised + to protect against accidental removal of the key + that's currently associated with *val*. + + Use :meth:`put` instead if you want to specify different behavior in + the case that the provided key or value duplicates an existing one. + Or use :meth:`forceput` to unconditionally associate *key* with *val*, + replacing any existing items as necessary to preserve uniqueness. + + :raises bidict.ValueDuplicationError: if *val* duplicates that of an + existing item. + + :raises bidict.KeyAndValueDuplicationError: if *key* duplicates the key of an + existing item and *val* duplicates the value of a different + existing item. + """ + self._put(key, val, self.on_dup) + + def put(self, key: KT, val: VT, on_dup: OnDup = ON_DUP_RAISE) -> None: + """Associate *key* with *val*, honoring the :class:`OnDup` given in *on_dup*. + + For example, if *on_dup* is :attr:`~bidict.ON_DUP_RAISE`, + then *key* will be associated with *val* if and only if + *key* is not already associated with an existing value and + *val* is not already associated with an existing key, + otherwise an exception will be raised. + + If *key* is already associated with *val*, this is a no-op. + + :raises bidict.KeyDuplicationError: if attempting to insert an item + whose key only duplicates an existing item's, and *on_dup.key* is + :attr:`~bidict.RAISE`. + + :raises bidict.ValueDuplicationError: if attempting to insert an item + whose value only duplicates an existing item's, and *on_dup.val* is + :attr:`~bidict.RAISE`. + + :raises bidict.KeyAndValueDuplicationError: if attempting to insert an + item whose key duplicates one existing item's, and whose value + duplicates another existing item's, and *on_dup.kv* is + :attr:`~bidict.RAISE`. + """ + self._put(key, val, on_dup) + + def forceput(self, key: KT, val: VT) -> None: + """Associate *key* with *val* unconditionally. + + Replace any existing mappings containing key *key* or value *val* + as necessary to preserve uniqueness. + """ + self._put(key, val, ON_DUP_DROP_OLD) + + def clear(self) -> None: + """Remove all items.""" + self._fwdm.clear() + self._invm.clear() + + @_t.overload + def pop(self, key: KT) -> VT: ... + @_t.overload + def pop(self, key: KT, default: VDT = ...) -> VDT: ... + def pop(self, key: KT, default: VDT = _NONE) -> VDT: + """*x.pop(k[, d]) → v* + + Remove specified key and return the corresponding value. + + :raises KeyError: if *key* is not found and no *default* is provided. + """ + try: + return self._pop(key) + except KeyError: + if default is _NONE: + raise + return default + + def popitem(self) -> _t.Tuple[KT, VT]: + """*x.popitem() → (k, v)* + + Remove and return some item as a (key, value) pair. + + :raises KeyError: if *x* is empty. + """ + if not self: + raise KeyError('mapping is empty') + key, val = self._fwdm.popitem() + del self._invm[val] + return key, val + + @_t.overload + def update(self, __arg: _t.Mapping[KT, VT], **kw: VT) -> None: ... + @_t.overload + def update(self, __arg: IterItems[KT, VT], **kw: VT) -> None: ... + @_t.overload + def update(self, **kw: VT) -> None: ... + def update(self, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + """Like calling :meth:`putall` with *self.on_dup* passed for *on_dup*.""" + if args or kw: + self._update(False, self.on_dup, *args, **kw) + + @_t.overload + def forceupdate(self, __arg: _t.Mapping[KT, VT], **kw: VT) -> None: ... + @_t.overload + def forceupdate(self, __arg: IterItems[KT, VT], **kw: VT) -> None: ... + @_t.overload + def forceupdate(self, **kw: VT) -> None: ... + def forceupdate(self, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + """Like a bulk :meth:`forceput`.""" + self._update(False, ON_DUP_DROP_OLD, *args, **kw) + + @_t.overload + def putall(self, items: _t.Mapping[KT, VT], on_dup: OnDup) -> None: ... + @_t.overload + def putall(self, items: IterItems[KT, VT], on_dup: OnDup = ON_DUP_RAISE) -> None: ... + def putall(self, items: MapOrIterItems[KT, VT], on_dup: OnDup = ON_DUP_RAISE) -> None: + """Like a bulk :meth:`put`. + + If one of the given items causes an exception to be raised, + none of the items is inserted. + """ + if items: + self._update(False, on_dup, items) + + +# * Code review nav * +#============================================================================== +# ← Prev: _frozenbidict.py Current: _mut.py Next: _bidict.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_named.py b/matteo_env/Lib/site-packages/bidict/_named.py new file mode 100644 index 0000000..7a22722 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_named.py @@ -0,0 +1,99 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +"""Provide :func:`bidict.namedbidict`.""" + +import typing as _t +from sys import _getframe + +from ._abc import BidirectionalMapping, KT, VT +from ._bidict import bidict + + +def namedbidict( + typename: str, + keyname: str, + valname: str, + *, + base_type: _t.Type[BidirectionalMapping[KT, VT]] = bidict, +) -> _t.Type[BidirectionalMapping[KT, VT]]: + r"""Create a new subclass of *base_type* with custom accessors. + + Like :func:`collections.namedtuple` for bidicts. + + The new class's ``__name__`` and ``__qualname__`` will be set to *typename*, + and its ``__module__`` will be set to the caller's module. + + Instances of the new class will provide access to their + :attr:`inverse ` instances + via the custom *keyname*\_for property, + and access to themselves + via the custom *valname*\_for property. + + *See also* the :ref:`namedbidict usage documentation + ` + + :raises ValueError: if any of the *typename*, *keyname*, or *valname* + strings is not a valid Python identifier, or if *keyname == valname*. + + :raises TypeError: if *base_type* is not a :class:`BidirectionalMapping` subclass + that provides ``_isinv`` and :meth:`~object.__getstate__` attributes. + (Any :class:`~bidict.BidictBase` subclass can be passed in, including all the + concrete bidict types pictured in the :ref:`other-bidict-types:Bidict Types Diagram`. + """ + if not issubclass(base_type, BidirectionalMapping) or not all(hasattr(base_type, i) for i in ('_isinv', '__getstate__')): + raise TypeError(base_type) + names = (typename, keyname, valname) + if not all(map(str.isidentifier, names)) or keyname == valname: + raise ValueError(names) + + class _Named(base_type): # type: ignore + + __slots__ = () + + def _getfwd(self) -> '_Named': + return self.inverse if self._isinv else self # type: ignore + + def _getinv(self) -> '_Named': + return self if self._isinv else self.inverse # type: ignore + + @property + def _keyname(self) -> str: + return valname if self._isinv else keyname + + @property + def _valname(self) -> str: + return keyname if self._isinv else valname + + def __reduce__(self) -> '_t.Tuple[_t.Callable[[str, str, str, _t.Type[BidirectionalMapping]], BidirectionalMapping], _t.Tuple[str, str, str, _t.Type[BidirectionalMapping]], dict]': + return (_make_empty, (typename, keyname, valname, base_type), self.__getstate__()) + + bname = base_type.__name__ + fname = valname + '_for' + iname = keyname + '_for' + fdoc = f'{typename} forward {bname}: {keyname} → {valname}' + idoc = f'{typename} inverse {bname}: {valname} → {keyname}' + setattr(_Named, fname, property(_Named._getfwd, doc=fdoc)) + setattr(_Named, iname, property(_Named._getinv, doc=idoc)) + + _Named.__name__ = typename + _Named.__qualname__ = typename + _Named.__module__ = _getframe(1).f_globals.get('__name__') # type: ignore + return _Named + + +def _make_empty( + typename: str, + keyname: str, + valname: str, + base_type: _t.Type[BidirectionalMapping] = bidict, +) -> BidirectionalMapping: + """Create a named bidict with the indicated arguments and return an empty instance. + Used to make :func:`bidict.namedbidict` instances picklable. + """ + cls = namedbidict(typename, keyname, valname, base_type=base_type) + return cls() diff --git a/matteo_env/Lib/site-packages/bidict/_orderedbase.py b/matteo_env/Lib/site-packages/bidict/_orderedbase.py new file mode 100644 index 0000000..4bb6890 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_orderedbase.py @@ -0,0 +1,314 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _bidict.py Current: _orderedbase.py Next: _frozenordered.py → +#============================================================================== + + +"""Provide :class:`OrderedBidictBase`.""" + +import typing as _t +from copy import copy +from weakref import ref + +from ._base import _NONE, _DedupResult, _WriteResult, BidictBase, BT +from ._bidict import bidict +from ._typing import KT, VT, IterItems, MapOrIterItems + + +class _Node: + """A node in a circular doubly-linked list + used to encode the order of items in an ordered bidict. + + Only weak references to the next and previous nodes + are held to avoid creating strong reference cycles. + + Because an ordered bidict retains two strong references + to each node instance (one from its backing `_fwdm` mapping + and one from its `_invm` mapping), a node's refcount will not + drop to zero (and so will not be garbage collected) as long as + the ordered bidict that contains it is still alive. + Because nodes don't have strong reference cycles, + once their containing bidict is freed, + they too are immediately freed. + """ + + __slots__ = ('_prv', '_nxt', '__weakref__') + + def __init__(self, prv: '_Node' = None, nxt: '_Node' = None) -> None: + self._setprv(prv) + self._setnxt(nxt) + + def __repr__(self) -> str: + clsname = self.__class__.__name__ + prv = id(self.prv) + nxt = id(self.nxt) + return f'{clsname}(prv={prv}, self={id(self)}, nxt={nxt})' + + def _getprv(self) -> '_t.Optional[_Node]': + return self._prv() if isinstance(self._prv, ref) else self._prv + + def _setprv(self, prv: '_t.Optional[_Node]') -> None: + self._prv = prv and ref(prv) + + prv = property(_getprv, _setprv) + + def _getnxt(self) -> '_t.Optional[_Node]': + return self._nxt() if isinstance(self._nxt, ref) else self._nxt + + def _setnxt(self, nxt: '_t.Optional[_Node]') -> None: + self._nxt = nxt and ref(nxt) + + nxt = property(_getnxt, _setnxt) + + def __getstate__(self) -> dict: + """Return the instance state dictionary + but with weakrefs converted to strong refs + so that it can be pickled. + + *See also* :meth:`object.__getstate__` + """ + return dict(_prv=self.prv, _nxt=self.nxt) + + def __setstate__(self, state: dict) -> None: + """Set the instance state from *state*.""" + self._setprv(state['_prv']) + self._setnxt(state['_nxt']) + + +class _SentinelNode(_Node): + """Special node in a circular doubly-linked list + that links the first node with the last node. + When its next and previous references point back to itself + it represents an empty list. + """ + + __slots__ = () + + def __init__(self, prv: _Node = None, nxt: _Node = None) -> None: + super().__init__(prv or self, nxt or self) + + def __repr__(self) -> str: + return '' + + def __bool__(self) -> bool: + return False + + def _iter(self, *, reverse: bool = False) -> _t.Iterator[_Node]: + """Iterator yielding nodes in the requested order, + i.e. traverse the linked list via :attr:`nxt` + (or :attr:`prv` if *reverse* is truthy) + until reaching a falsy (i.e. sentinel) node. + """ + attr = 'prv' if reverse else 'nxt' + node = getattr(self, attr) + while node: + yield node + node = getattr(node, attr) + + +class OrderedBidictBase(BidictBase[KT, VT]): + """Base class implementing an ordered :class:`BidirectionalMapping`.""" + + __slots__ = ('_sntl',) + + _fwdm_cls = bidict # type: ignore + _invm_cls = bidict # type: ignore + + #: The object used by :meth:`__repr__` for printing the contained items. + _repr_delegate = list # type: ignore + + @_t.overload + def __init__(self, __arg: _t.Mapping[KT, VT], **kw: VT) -> None: ... + @_t.overload + def __init__(self, __arg: IterItems[KT, VT], **kw: VT) -> None: ... + @_t.overload + def __init__(self, **kw: VT) -> None: ... + def __init__(self, *args: MapOrIterItems[KT, VT], **kw: VT) -> None: + """Make a new ordered bidirectional mapping. + The signature behaves like that of :class:`dict`. + Items passed in are added in the order they are passed, + respecting the :attr:`on_dup` class attribute in the process. + + The order in which items are inserted is remembered, + similar to :class:`collections.OrderedDict`. + """ + self._sntl = _SentinelNode() + + # Like unordered bidicts, ordered bidicts also store two backing one-directional mappings + # `_fwdm` and `_invm`. But rather than mapping `key` to `val` and `val` to `key` + # (respectively), they map `key` to `nodefwd` and `val` to `nodeinv` (respectively), where + # `nodefwd` is `nodeinv` when `key` and `val` are associated with one another. + + # To effect this difference, `_write_item` and `_undo_write` are overridden. But much of the + # rest of BidictBase's implementation, including BidictBase.__init__ and BidictBase._update, + # are inherited and are able to be reused without modification. + super().__init__(*args, **kw) + + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'OrderedBidictBase[VT, KT]': ... + _fwdm: bidict[KT, _Node] # type: ignore + _invm: bidict[VT, _Node] # type: ignore + + def _init_inv(self) -> None: + super()._init_inv() + self.inverse._sntl = self._sntl + + # Can't reuse BidictBase.copy since ordered bidicts have different internal structure. + def copy(self: BT) -> BT: + """A shallow copy of this ordered bidict.""" + # Fast copy implementation bypassing __init__. See comments in :meth:`BidictBase.copy`. + cp = self.__class__.__new__(self.__class__) + sntl = _SentinelNode() + fwdm = copy(self._fwdm) + invm = copy(self._invm) + cur = sntl + nxt = sntl.nxt + for (key, val) in self.items(): + nxt = _Node(cur, sntl) + cur.nxt = fwdm[key] = invm[val] = nxt + cur = nxt + sntl.prv = nxt + cp._sntl = sntl + cp._fwdm = fwdm + cp._invm = invm + cp._init_inv() + return cp # type: ignore + + __copy__ = copy + + def __getitem__(self, key: KT) -> VT: + nodefwd = self._fwdm[key] + val = self._invm.inverse[nodefwd] + return val + + def _pop(self, key: KT) -> VT: + nodefwd = self._fwdm.pop(key) + val = self._invm.inverse.pop(nodefwd) + nodefwd.prv.nxt = nodefwd.nxt + nodefwd.nxt.prv = nodefwd.prv + return val + + @staticmethod + def _already_have(key: KT, val: VT, nodeinv: _Node, nodefwd: _Node) -> bool: # type: ignore + # Overrides _base.BidictBase. + return nodeinv is nodefwd + + def _write_item(self, key: KT, val: VT, dedup_result: _DedupResult) -> _WriteResult: + # Overrides _base.BidictBase. + fwdm = self._fwdm # bidict mapping keys to nodes + invm = self._invm # bidict mapping vals to nodes + isdupkey, isdupval, nodeinv, nodefwd = dedup_result + if not isdupkey and not isdupval: + # No key or value duplication -> create and append a new node. + sntl = self._sntl + last = sntl.prv + node = _Node(last, sntl) + last.nxt = sntl.prv = fwdm[key] = invm[val] = node + oldkey = oldval = _NONE + elif isdupkey and isdupval: + # Key and value duplication across two different nodes. + assert nodefwd is not nodeinv + oldval = invm.inverse[nodefwd] # type: ignore + oldkey = fwdm.inverse[nodeinv] # type: ignore + assert oldkey != key + assert oldval != val + # We have to collapse nodefwd and nodeinv into a single node, i.e. drop one of them. + # Drop nodeinv, so that the item with the same key is the one overwritten in place. + nodeinv.prv.nxt = nodeinv.nxt + nodeinv.nxt.prv = nodeinv.prv + # Don't remove nodeinv's references to its neighbors since + # if the update fails, we'll need them to undo this write. + # Update fwdm and invm. + tmp = fwdm.pop(oldkey) # type: ignore + assert tmp is nodeinv + tmp = invm.pop(oldval) # type: ignore + assert tmp is nodefwd + fwdm[key] = invm[val] = nodefwd + elif isdupkey: + oldval = invm.inverse[nodefwd] # type: ignore + oldkey = _NONE + oldnodeinv = invm.pop(oldval) # type: ignore + assert oldnodeinv is nodefwd + invm[val] = nodefwd + else: # isdupval + oldkey = fwdm.inverse[nodeinv] # type: ignore + oldval = _NONE + oldnodefwd = fwdm.pop(oldkey) # type: ignore + assert oldnodefwd is nodeinv + fwdm[key] = nodeinv + return _WriteResult(key, val, oldkey, oldval) + + def _undo_write(self, dedup_result: _DedupResult, write_result: _WriteResult) -> None: + fwdm = self._fwdm + invm = self._invm + isdupkey, isdupval, nodeinv, nodefwd = dedup_result + key, val, oldkey, oldval = write_result + if not isdupkey and not isdupval: + self._pop(key) + elif isdupkey and isdupval: + # Restore original items. + nodeinv.prv.nxt = nodeinv.nxt.prv = nodeinv + fwdm[oldkey] = invm[val] = nodeinv + invm[oldval] = fwdm[key] = nodefwd + elif isdupkey: + tmp = invm.pop(val) + assert tmp is nodefwd + invm[oldval] = nodefwd + assert fwdm[key] is nodefwd + else: # isdupval + tmp = fwdm.pop(key) + assert tmp is nodeinv + fwdm[oldkey] = nodeinv + assert invm[val] is nodeinv + + def __iter__(self) -> _t.Iterator[KT]: + """Iterator over the contained keys in insertion order.""" + return self._iter() + + def _iter(self, *, reverse: bool = False) -> _t.Iterator[KT]: + fwdm_inv = self._fwdm.inverse + for node in self._sntl._iter(reverse=reverse): + yield fwdm_inv[node] + + def __reversed__(self) -> _t.Iterator[KT]: + """Iterator over the contained keys in reverse insertion order.""" + yield from self._iter(reverse=True) + + def equals_order_sensitive(self, other: object) -> bool: + """Order-sensitive equality check. + + *See also* :ref:`eq-order-insensitive` + """ + # Same short-circuit as BidictBase.__eq__. Factoring out not worth function call overhead. + if not isinstance(other, _t.Mapping) or len(self) != len(other): + return False + return all(i == j for (i, j) in zip(self.items(), other.items())) + + +# * Code review nav * +#============================================================================== +# ← Prev: _bidict.py Current: _orderedbase.py Next: _frozenordered.py → +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_orderedbidict.py b/matteo_env/Lib/site-packages/bidict/_orderedbidict.py new file mode 100644 index 0000000..b92b305 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_orderedbidict.py @@ -0,0 +1,93 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +#============================================================================== +# * Welcome to the bidict source code * +#============================================================================== + +# Doing a code review? You'll find a "Code review nav" comment like the one +# below at the top and bottom of the most important source files. This provides +# a suggested initial path through the source when reviewing. +# +# Note: If you aren't reading this on https://github.com/jab/bidict, you may be +# viewing an outdated version of the code. Please head to GitHub to review the +# latest version, which contains important improvements over older versions. +# +# Thank you for reading and for any feedback you provide. + +# * Code review nav * +#============================================================================== +# ← Prev: _frozenordered.py Current: _orderedbidict.py +#============================================================================== + + +"""Provide :class:`OrderedBidict`.""" + +import typing as _t + +from ._mut import MutableBidict +from ._orderedbase import OrderedBidictBase +from ._typing import KT, VT + + +class OrderedBidict(OrderedBidictBase[KT, VT], MutableBidict[KT, VT]): + """Mutable bidict type that maintains items in insertion order.""" + + __slots__ = () + + if _t.TYPE_CHECKING: + @property + def inverse(self) -> 'OrderedBidict[VT, KT]': ... + + def clear(self) -> None: + """Remove all items.""" + self._fwdm.clear() + self._invm.clear() + self._sntl.nxt = self._sntl.prv = self._sntl + + def popitem(self, last: bool = True) -> _t.Tuple[KT, VT]: + """*x.popitem() → (k, v)* + + Remove and return the most recently added item as a (key, value) pair + if *last* is True, else the least recently added item. + + :raises KeyError: if *x* is empty. + """ + if not self: + raise KeyError('mapping is empty') + key = next((reversed if last else iter)(self)) # type: ignore + val = self._pop(key) + return key, val + + def move_to_end(self, key: KT, last: bool = True) -> None: + """Move an existing key to the beginning or end of this ordered bidict. + + The item is moved to the end if *last* is True, else to the beginning. + + :raises KeyError: if the key does not exist + """ + node = self._fwdm[key] + node.prv.nxt = node.nxt + node.nxt.prv = node.prv + sntl = self._sntl + if last: + lastnode = sntl.prv + node.prv = lastnode + node.nxt = sntl + sntl.prv = lastnode.nxt = node + else: + firstnode = sntl.nxt + node.prv = sntl + node.nxt = firstnode + sntl.nxt = firstnode.prv = node + + +# * Code review nav * +#============================================================================== +# ← Prev: _frozenordered.py Current: _orderedbidict.py +#============================================================================== diff --git a/matteo_env/Lib/site-packages/bidict/_typing.py b/matteo_env/Lib/site-packages/bidict/_typing.py new file mode 100644 index 0000000..336e886 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_typing.py @@ -0,0 +1,33 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +"""Provide typing-related objects.""" + +import typing as _t + + +KT = _t.TypeVar('KT') +VT = _t.TypeVar('VT') +IterItems = _t.Iterable[_t.Tuple[KT, VT]] +MapOrIterItems = _t.Union[_t.Mapping[KT, VT], IterItems[KT, VT]] + +DT = _t.TypeVar('DT') #: for default arguments +VDT = _t.Union[VT, DT] + + +class _BareReprMeta(type): + def __repr__(cls) -> str: + return f'<{cls.__name__}>' + + +class _NONE(metaclass=_BareReprMeta): + """Sentinel type used to represent 'missing'.""" + + +OKT = _t.Union[KT, _NONE] #: optional key type +OVT = _t.Union[VT, _NONE] #: optional value type diff --git a/matteo_env/Lib/site-packages/bidict/_version.py b/matteo_env/Lib/site-packages/bidict/_version.py new file mode 100644 index 0000000..7c956c8 --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/_version.py @@ -0,0 +1,4 @@ +# coding: utf-8 +# file generated by setuptools_scm +# don't change, don't track in version control +version = '0.21.2' diff --git a/matteo_env/Lib/site-packages/bidict/metadata.py b/matteo_env/Lib/site-packages/bidict/metadata.py new file mode 100644 index 0000000..5cd389f --- /dev/null +++ b/matteo_env/Lib/site-packages/bidict/metadata.py @@ -0,0 +1,49 @@ +# -*- coding: utf-8 -*- +# Copyright 2009-2020 Joshua Bronson. All Rights Reserved. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +"""Define bidict package metadata.""" + + +# _version.py is generated by setuptools_scm (via its `write_to` param, see setup.py) +try: + from ._version import version +except (ImportError, ValueError, SystemError): # pragma: no cover + try: + import pkg_resources + except ImportError: + __version__ = '0.0.0.VERSION_NOT_FOUND' + else: + try: + __version__ = pkg_resources.get_distribution('bidict').version + except pkg_resources.DistributionNotFound: + __version__ = '0.0.0.VERSION_NOT_FOUND' +else: # pragma: no cover + __version__ = version + +try: + __version_info__ = tuple(int(p) if i < 3 else p for (i, p) in enumerate(__version__.split('.'))) +except Exception: # pragma: no cover + __vesion_info__ = (0, 0, 0, f'PARSE FAILURE: __version__={__version__!r}') + +__author__ = 'Joshua Bronson' +__maintainer__ = 'Joshua Bronson' +__copyright__ = 'Copyright 2009-2020 Joshua Bronson' +__email__ = 'jabronson@gmail.com' + +# See: ../docs/thanks.rst +__credits__ = [i.strip() for i in """ +Joshua Bronson, Michael Arntzenius, Francis Carr, Gregory Ewing, Raymond Hettinger, Jozef Knaperek, +Daniel Pope, Terry Reedy, David Turner, Tom Viner, Richard Sanger, Zeyi Wang +""".split(',')] + +__description__ = 'The bidirectional mapping library for Python.' +__keywords__ = 'dict dictionary mapping datastructure bimap bijection bijective ' \ + 'injective inverse reverse bidirectional two-way 2-way' + +__license__ = 'MPL 2.0' +__status__ = 'Beta' +__url__ = 'https://bidict.readthedocs.io' diff --git a/matteo_env/Lib/site-packages/bidict/py.typed b/matteo_env/Lib/site-packages/bidict/py.typed new file mode 100644 index 0000000..e69de29 diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/INSTALLER b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/LICENSE.rst b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/LICENSE.rst new file mode 100644 index 0000000..d12a849 --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/LICENSE.rst @@ -0,0 +1,28 @@ +Copyright 2014 Pallets + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/METADATA b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/METADATA new file mode 100644 index 0000000..00d6974 --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/METADATA @@ -0,0 +1,102 @@ +Metadata-Version: 2.1 +Name: click +Version: 7.1.2 +Summary: Composable command line interface toolkit +Home-page: https://palletsprojects.com/p/click/ +Maintainer: Pallets +Maintainer-email: contact@palletsprojects.com +License: BSD-3-Clause +Project-URL: Documentation, https://click.palletsprojects.com/ +Project-URL: Code, https://github.com/pallets/click +Project-URL: Issue tracker, https://github.com/pallets/click/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 3 +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.* + +\$ click\_ +========== + +Click is a Python package for creating beautiful command line interfaces +in a composable way with as little code as necessary. It's the "Command +Line Interface Creation Kit". It's highly configurable but comes with +sensible defaults out of the box. + +It aims to make the process of writing command line tools quick and fun +while also preventing any frustration caused by the inability to +implement an intended CLI API. + +Click in three points: + +- Arbitrary nesting of commands +- Automatic help page generation +- Supports lazy loading of subcommands at runtime + + +Installing +---------- + +Install and update using `pip`_: + +.. code-block:: text + + $ pip install -U click + +.. _pip: https://pip.pypa.io/en/stable/quickstart/ + + +A Simple Example +---------------- + +.. code-block:: python + + import click + + @click.command() + @click.option("--count", default=1, help="Number of greetings.") + @click.option("--name", prompt="Your name", help="The person to greet.") + def hello(count, name): + """Simple program that greets NAME for a total of COUNT times.""" + for _ in range(count): + click.echo(f"Hello, {name}!") + + if __name__ == '__main__': + hello() + +.. code-block:: text + + $ python hello.py --count=3 + Your name: Click + Hello, Click! + Hello, Click! + Hello, Click! + + +Donate +------ + +The Pallets organization develops and supports Click and other popular +packages. In order to grow the community of contributors and users, and +allow the maintainers to devote more time to the projects, `please +donate today`_. + +.. _please donate today: https://palletsprojects.com/donate + + +Links +----- + +- Website: https://palletsprojects.com/p/click/ +- Documentation: https://click.palletsprojects.com/ +- Releases: https://pypi.org/project/click/ +- Code: https://github.com/pallets/click +- Issue tracker: https://github.com/pallets/click/issues +- Test status: https://dev.azure.com/pallets/click/_build +- Official chat: https://discord.gg/t6rrQZH + + diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/RECORD b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/RECORD new file mode 100644 index 0000000..ad860ae --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/RECORD @@ -0,0 +1,40 @@ +click-7.1.2.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +click-7.1.2.dist-info/LICENSE.rst,sha256=morRBqOU6FO_4h9C9OctWSgZoigF2ZG18ydQKSkrZY0,1475 +click-7.1.2.dist-info/METADATA,sha256=LrRgakZKV7Yg3qJqX_plu2WhFW81MzP3EqQmZhHIO8M,2868 +click-7.1.2.dist-info/RECORD,, +click-7.1.2.dist-info/WHEEL,sha256=kGT74LWyRUZrL4VgLh6_g12IeVl_9u9ZVhadrgXZUEY,110 +click-7.1.2.dist-info/top_level.txt,sha256=J1ZQogalYS4pphY_lPECoNMfw0HzTSrZglC4Yfwo4xA,6 +click/__init__.py,sha256=FkyGDQ-cbiQxP_lxgUspyFYS48f2S_pTcfKPz-d_RMo,2463 +click/__pycache__/__init__.cpython-38.pyc,, +click/__pycache__/_bashcomplete.cpython-38.pyc,, +click/__pycache__/_compat.cpython-38.pyc,, +click/__pycache__/_termui_impl.cpython-38.pyc,, +click/__pycache__/_textwrap.cpython-38.pyc,, +click/__pycache__/_unicodefun.cpython-38.pyc,, +click/__pycache__/_winconsole.cpython-38.pyc,, +click/__pycache__/core.cpython-38.pyc,, +click/__pycache__/decorators.cpython-38.pyc,, +click/__pycache__/exceptions.cpython-38.pyc,, +click/__pycache__/formatting.cpython-38.pyc,, +click/__pycache__/globals.cpython-38.pyc,, +click/__pycache__/parser.cpython-38.pyc,, +click/__pycache__/termui.cpython-38.pyc,, +click/__pycache__/testing.cpython-38.pyc,, +click/__pycache__/types.cpython-38.pyc,, +click/__pycache__/utils.cpython-38.pyc,, +click/_bashcomplete.py,sha256=9J98IHQYmCAr2Jup6TDshUr5FJEen-AoQCZR0K5nKxQ,12309 +click/_compat.py,sha256=AoMaYnZ-3pwtNXuHtlb6_UXsayoG0QZiHKIRy2VFezc,24169 +click/_termui_impl.py,sha256=yNktUMAdjYOU1HMkq915jR3zgAzUNtGSQqSTSSMn3eQ,20702 +click/_textwrap.py,sha256=ajCzkzFly5tjm9foQ5N9_MOeaYJMBjAltuFa69n4iXY,1197 +click/_unicodefun.py,sha256=apLSNEBZgUsQNPMUv072zJ1swqnm0dYVT5TqcIWTt6w,4201 +click/_winconsole.py,sha256=6YDu6Rq1Wxx4w9uinBMK2LHvP83aerZM9GQurlk3QDo,10010 +click/core.py,sha256=V6DJzastGhrC6WTDwV9MSLwcJUdX2Uf1ypmgkjBdn_Y,77650 +click/decorators.py,sha256=3TvEO_BkaHl7k6Eh1G5eC7JK4LKPdpFqH9JP0QDyTlM,11215 +click/exceptions.py,sha256=3pQAyyMFzx5A3eV0Y27WtDTyGogZRbrC6_o5DjjKBbw,8118 +click/formatting.py,sha256=Wb4gqFEpWaKPgAbOvnkCl8p-bEZx5KpM5ZSByhlnJNk,9281 +click/globals.py,sha256=ht7u2kUGI08pAarB4e4yC8Lkkxy6gJfRZyzxEj8EbWQ,1501 +click/parser.py,sha256=mFK-k58JtPpqO0AC36WAr0t5UfzEw1mvgVSyn7WCe9M,15691 +click/termui.py,sha256=G7QBEKIepRIGLvNdGwBTYiEtSImRxvTO_AglVpyHH2s,23998 +click/testing.py,sha256=EUEsDUqNXFgCLhZ0ZFOROpaVDA5I_rijwnNPE6qICgA,12854 +click/types.py,sha256=wuubik4VqgqAw5dvbYFkDt-zSAx97y9TQXuXcVaRyQA,25045 +click/utils.py,sha256=4VEcJ7iEHwjnFuzEuRtkT99o5VG3zqSD7Q2CVzv13WU,15940 diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/WHEEL b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/WHEEL new file mode 100644 index 0000000..ef99c6c --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.34.2) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/matteo_env/Lib/site-packages/click-7.1.2.dist-info/top_level.txt b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/top_level.txt new file mode 100644 index 0000000..dca9a90 --- /dev/null +++ b/matteo_env/Lib/site-packages/click-7.1.2.dist-info/top_level.txt @@ -0,0 +1 @@ +click diff --git a/matteo_env/Lib/site-packages/click/__init__.py b/matteo_env/Lib/site-packages/click/__init__.py new file mode 100644 index 0000000..2b6008f --- /dev/null +++ b/matteo_env/Lib/site-packages/click/__init__.py @@ -0,0 +1,79 @@ +""" +Click is a simple Python module inspired by the stdlib optparse to make +writing command line scripts fun. Unlike other modules, it's based +around a simple API that does not come with too much magic and is +composable. +""" +from .core import Argument +from .core import BaseCommand +from .core import Command +from .core import CommandCollection +from .core import Context +from .core import Group +from .core import MultiCommand +from .core import Option +from .core import Parameter +from .decorators import argument +from .decorators import command +from .decorators import confirmation_option +from .decorators import group +from .decorators import help_option +from .decorators import make_pass_decorator +from .decorators import option +from .decorators import pass_context +from .decorators import pass_obj +from .decorators import password_option +from .decorators import version_option +from .exceptions import Abort +from .exceptions import BadArgumentUsage +from .exceptions import BadOptionUsage +from .exceptions import BadParameter +from .exceptions import ClickException +from .exceptions import FileError +from .exceptions import MissingParameter +from .exceptions import NoSuchOption +from .exceptions import UsageError +from .formatting import HelpFormatter +from .formatting import wrap_text +from .globals import get_current_context +from .parser import OptionParser +from .termui import clear +from .termui import confirm +from .termui import echo_via_pager +from .termui import edit +from .termui import get_terminal_size +from .termui import getchar +from .termui import launch +from .termui import pause +from .termui import progressbar +from .termui import prompt +from .termui import secho +from .termui import style +from .termui import unstyle +from .types import BOOL +from .types import Choice +from .types import DateTime +from .types import File +from .types import FLOAT +from .types import FloatRange +from .types import INT +from .types import IntRange +from .types import ParamType +from .types import Path +from .types import STRING +from .types import Tuple +from .types import UNPROCESSED +from .types import UUID +from .utils import echo +from .utils import format_filename +from .utils import get_app_dir +from .utils import get_binary_stream +from .utils import get_os_args +from .utils import get_text_stream +from .utils import open_file + +# Controls if click should emit the warning about the use of unicode +# literals. +disable_unicode_literals_warning = False + +__version__ = "7.1.2" diff --git a/matteo_env/Lib/site-packages/click/_bashcomplete.py b/matteo_env/Lib/site-packages/click/_bashcomplete.py new file mode 100644 index 0000000..8bca244 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_bashcomplete.py @@ -0,0 +1,375 @@ +import copy +import os +import re + +from .core import Argument +from .core import MultiCommand +from .core import Option +from .parser import split_arg_string +from .types import Choice +from .utils import echo + +try: + from collections import abc +except ImportError: + import collections as abc + +WORDBREAK = "=" + +# Note, only BASH version 4.4 and later have the nosort option. +COMPLETION_SCRIPT_BASH = """ +%(complete_func)s() { + local IFS=$'\n' + COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \\ + COMP_CWORD=$COMP_CWORD \\ + %(autocomplete_var)s=complete $1 ) ) + return 0 +} + +%(complete_func)setup() { + local COMPLETION_OPTIONS="" + local BASH_VERSION_ARR=(${BASH_VERSION//./ }) + # Only BASH version 4.4 and later have the nosort option. + if [ ${BASH_VERSION_ARR[0]} -gt 4 ] || ([ ${BASH_VERSION_ARR[0]} -eq 4 ] \ +&& [ ${BASH_VERSION_ARR[1]} -ge 4 ]); then + COMPLETION_OPTIONS="-o nosort" + fi + + complete $COMPLETION_OPTIONS -F %(complete_func)s %(script_names)s +} + +%(complete_func)setup +""" + +COMPLETION_SCRIPT_ZSH = """ +#compdef %(script_names)s + +%(complete_func)s() { + local -a completions + local -a completions_with_descriptions + local -a response + (( ! $+commands[%(script_names)s] )) && return 1 + + response=("${(@f)$( env COMP_WORDS=\"${words[*]}\" \\ + COMP_CWORD=$((CURRENT-1)) \\ + %(autocomplete_var)s=\"complete_zsh\" \\ + %(script_names)s )}") + + for key descr in ${(kv)response}; do + if [[ "$descr" == "_" ]]; then + completions+=("$key") + else + completions_with_descriptions+=("$key":"$descr") + fi + done + + if [ -n "$completions_with_descriptions" ]; then + _describe -V unsorted completions_with_descriptions -U + fi + + if [ -n "$completions" ]; then + compadd -U -V unsorted -a completions + fi + compstate[insert]="automenu" +} + +compdef %(complete_func)s %(script_names)s +""" + +COMPLETION_SCRIPT_FISH = ( + "complete --no-files --command %(script_names)s --arguments" + ' "(env %(autocomplete_var)s=complete_fish' + " COMP_WORDS=(commandline -cp) COMP_CWORD=(commandline -t)" + ' %(script_names)s)"' +) + +_completion_scripts = { + "bash": COMPLETION_SCRIPT_BASH, + "zsh": COMPLETION_SCRIPT_ZSH, + "fish": COMPLETION_SCRIPT_FISH, +} + +_invalid_ident_char_re = re.compile(r"[^a-zA-Z0-9_]") + + +def get_completion_script(prog_name, complete_var, shell): + cf_name = _invalid_ident_char_re.sub("", prog_name.replace("-", "_")) + script = _completion_scripts.get(shell, COMPLETION_SCRIPT_BASH) + return ( + script + % { + "complete_func": "_{}_completion".format(cf_name), + "script_names": prog_name, + "autocomplete_var": complete_var, + } + ).strip() + ";" + + +def resolve_ctx(cli, prog_name, args): + """Parse into a hierarchy of contexts. Contexts are connected + through the parent variable. + + :param cli: command definition + :param prog_name: the program that is running + :param args: full list of args + :return: the final context/command parsed + """ + ctx = cli.make_context(prog_name, args, resilient_parsing=True) + args = ctx.protected_args + ctx.args + while args: + if isinstance(ctx.command, MultiCommand): + if not ctx.command.chain: + cmd_name, cmd, args = ctx.command.resolve_command(ctx, args) + if cmd is None: + return ctx + ctx = cmd.make_context( + cmd_name, args, parent=ctx, resilient_parsing=True + ) + args = ctx.protected_args + ctx.args + else: + # Walk chained subcommand contexts saving the last one. + while args: + cmd_name, cmd, args = ctx.command.resolve_command(ctx, args) + if cmd is None: + return ctx + sub_ctx = cmd.make_context( + cmd_name, + args, + parent=ctx, + allow_extra_args=True, + allow_interspersed_args=False, + resilient_parsing=True, + ) + args = sub_ctx.args + ctx = sub_ctx + args = sub_ctx.protected_args + sub_ctx.args + else: + break + return ctx + + +def start_of_option(param_str): + """ + :param param_str: param_str to check + :return: whether or not this is the start of an option declaration + (i.e. starts "-" or "--") + """ + return param_str and param_str[:1] == "-" + + +def is_incomplete_option(all_args, cmd_param): + """ + :param all_args: the full original list of args supplied + :param cmd_param: the current command paramter + :return: whether or not the last option declaration (i.e. starts + "-" or "--") is incomplete and corresponds to this cmd_param. In + other words whether this cmd_param option can still accept + values + """ + if not isinstance(cmd_param, Option): + return False + if cmd_param.is_flag: + return False + last_option = None + for index, arg_str in enumerate( + reversed([arg for arg in all_args if arg != WORDBREAK]) + ): + if index + 1 > cmd_param.nargs: + break + if start_of_option(arg_str): + last_option = arg_str + + return True if last_option and last_option in cmd_param.opts else False + + +def is_incomplete_argument(current_params, cmd_param): + """ + :param current_params: the current params and values for this + argument as already entered + :param cmd_param: the current command parameter + :return: whether or not the last argument is incomplete and + corresponds to this cmd_param. In other words whether or not the + this cmd_param argument can still accept values + """ + if not isinstance(cmd_param, Argument): + return False + current_param_values = current_params[cmd_param.name] + if current_param_values is None: + return True + if cmd_param.nargs == -1: + return True + if ( + isinstance(current_param_values, abc.Iterable) + and cmd_param.nargs > 1 + and len(current_param_values) < cmd_param.nargs + ): + return True + return False + + +def get_user_autocompletions(ctx, args, incomplete, cmd_param): + """ + :param ctx: context associated with the parsed command + :param args: full list of args + :param incomplete: the incomplete text to autocomplete + :param cmd_param: command definition + :return: all the possible user-specified completions for the param + """ + results = [] + if isinstance(cmd_param.type, Choice): + # Choices don't support descriptions. + results = [ + (c, None) for c in cmd_param.type.choices if str(c).startswith(incomplete) + ] + elif cmd_param.autocompletion is not None: + dynamic_completions = cmd_param.autocompletion( + ctx=ctx, args=args, incomplete=incomplete + ) + results = [ + c if isinstance(c, tuple) else (c, None) for c in dynamic_completions + ] + return results + + +def get_visible_commands_starting_with(ctx, starts_with): + """ + :param ctx: context associated with the parsed command + :starts_with: string that visible commands must start with. + :return: all visible (not hidden) commands that start with starts_with. + """ + for c in ctx.command.list_commands(ctx): + if c.startswith(starts_with): + command = ctx.command.get_command(ctx, c) + if not command.hidden: + yield command + + +def add_subcommand_completions(ctx, incomplete, completions_out): + # Add subcommand completions. + if isinstance(ctx.command, MultiCommand): + completions_out.extend( + [ + (c.name, c.get_short_help_str()) + for c in get_visible_commands_starting_with(ctx, incomplete) + ] + ) + + # Walk up the context list and add any other completion + # possibilities from chained commands + while ctx.parent is not None: + ctx = ctx.parent + if isinstance(ctx.command, MultiCommand) and ctx.command.chain: + remaining_commands = [ + c + for c in get_visible_commands_starting_with(ctx, incomplete) + if c.name not in ctx.protected_args + ] + completions_out.extend( + [(c.name, c.get_short_help_str()) for c in remaining_commands] + ) + + +def get_choices(cli, prog_name, args, incomplete): + """ + :param cli: command definition + :param prog_name: the program that is running + :param args: full list of args + :param incomplete: the incomplete text to autocomplete + :return: all the possible completions for the incomplete + """ + all_args = copy.deepcopy(args) + + ctx = resolve_ctx(cli, prog_name, args) + if ctx is None: + return [] + + has_double_dash = "--" in all_args + + # In newer versions of bash long opts with '='s are partitioned, but + # it's easier to parse without the '=' + if start_of_option(incomplete) and WORDBREAK in incomplete: + partition_incomplete = incomplete.partition(WORDBREAK) + all_args.append(partition_incomplete[0]) + incomplete = partition_incomplete[2] + elif incomplete == WORDBREAK: + incomplete = "" + + completions = [] + if not has_double_dash and start_of_option(incomplete): + # completions for partial options + for param in ctx.command.params: + if isinstance(param, Option) and not param.hidden: + param_opts = [ + param_opt + for param_opt in param.opts + param.secondary_opts + if param_opt not in all_args or param.multiple + ] + completions.extend( + [(o, param.help) for o in param_opts if o.startswith(incomplete)] + ) + return completions + # completion for option values from user supplied values + for param in ctx.command.params: + if is_incomplete_option(all_args, param): + return get_user_autocompletions(ctx, all_args, incomplete, param) + # completion for argument values from user supplied values + for param in ctx.command.params: + if is_incomplete_argument(ctx.params, param): + return get_user_autocompletions(ctx, all_args, incomplete, param) + + add_subcommand_completions(ctx, incomplete, completions) + # Sort before returning so that proper ordering can be enforced in custom types. + return sorted(completions) + + +def do_complete(cli, prog_name, include_descriptions): + cwords = split_arg_string(os.environ["COMP_WORDS"]) + cword = int(os.environ["COMP_CWORD"]) + args = cwords[1:cword] + try: + incomplete = cwords[cword] + except IndexError: + incomplete = "" + + for item in get_choices(cli, prog_name, args, incomplete): + echo(item[0]) + if include_descriptions: + # ZSH has trouble dealing with empty array parameters when + # returned from commands, use '_' to indicate no description + # is present. + echo(item[1] if item[1] else "_") + + return True + + +def do_complete_fish(cli, prog_name): + cwords = split_arg_string(os.environ["COMP_WORDS"]) + incomplete = os.environ["COMP_CWORD"] + args = cwords[1:] + + for item in get_choices(cli, prog_name, args, incomplete): + if item[1]: + echo("{arg}\t{desc}".format(arg=item[0], desc=item[1])) + else: + echo(item[0]) + + return True + + +def bashcomplete(cli, prog_name, complete_var, complete_instr): + if "_" in complete_instr: + command, shell = complete_instr.split("_", 1) + else: + command = complete_instr + shell = "bash" + + if command == "source": + echo(get_completion_script(prog_name, complete_var, shell)) + return True + elif command == "complete": + if shell == "fish": + return do_complete_fish(cli, prog_name) + elif shell in {"bash", "zsh"}: + return do_complete(cli, prog_name, shell == "zsh") + + return False diff --git a/matteo_env/Lib/site-packages/click/_compat.py b/matteo_env/Lib/site-packages/click/_compat.py new file mode 100644 index 0000000..60cb115 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_compat.py @@ -0,0 +1,786 @@ +# flake8: noqa +import codecs +import io +import os +import re +import sys +from weakref import WeakKeyDictionary + +PY2 = sys.version_info[0] == 2 +CYGWIN = sys.platform.startswith("cygwin") +MSYS2 = sys.platform.startswith("win") and ("GCC" in sys.version) +# Determine local App Engine environment, per Google's own suggestion +APP_ENGINE = "APPENGINE_RUNTIME" in os.environ and "Development/" in os.environ.get( + "SERVER_SOFTWARE", "" +) +WIN = sys.platform.startswith("win") and not APP_ENGINE and not MSYS2 +DEFAULT_COLUMNS = 80 + + +_ansi_re = re.compile(r"\033\[[;?0-9]*[a-zA-Z]") + + +def get_filesystem_encoding(): + return sys.getfilesystemencoding() or sys.getdefaultencoding() + + +def _make_text_stream( + stream, encoding, errors, force_readable=False, force_writable=False +): + if encoding is None: + encoding = get_best_encoding(stream) + if errors is None: + errors = "replace" + return _NonClosingTextIOWrapper( + stream, + encoding, + errors, + line_buffering=True, + force_readable=force_readable, + force_writable=force_writable, + ) + + +def is_ascii_encoding(encoding): + """Checks if a given encoding is ascii.""" + try: + return codecs.lookup(encoding).name == "ascii" + except LookupError: + return False + + +def get_best_encoding(stream): + """Returns the default stream encoding if not found.""" + rv = getattr(stream, "encoding", None) or sys.getdefaultencoding() + if is_ascii_encoding(rv): + return "utf-8" + return rv + + +class _NonClosingTextIOWrapper(io.TextIOWrapper): + def __init__( + self, + stream, + encoding, + errors, + force_readable=False, + force_writable=False, + **extra + ): + self._stream = stream = _FixupStream(stream, force_readable, force_writable) + io.TextIOWrapper.__init__(self, stream, encoding, errors, **extra) + + # The io module is a place where the Python 3 text behavior + # was forced upon Python 2, so we need to unbreak + # it to look like Python 2. + if PY2: + + def write(self, x): + if isinstance(x, str) or is_bytes(x): + try: + self.flush() + except Exception: + pass + return self.buffer.write(str(x)) + return io.TextIOWrapper.write(self, x) + + def writelines(self, lines): + for line in lines: + self.write(line) + + def __del__(self): + try: + self.detach() + except Exception: + pass + + def isatty(self): + # https://bitbucket.org/pypy/pypy/issue/1803 + return self._stream.isatty() + + +class _FixupStream(object): + """The new io interface needs more from streams than streams + traditionally implement. As such, this fix-up code is necessary in + some circumstances. + + The forcing of readable and writable flags are there because some tools + put badly patched objects on sys (one such offender are certain version + of jupyter notebook). + """ + + def __init__(self, stream, force_readable=False, force_writable=False): + self._stream = stream + self._force_readable = force_readable + self._force_writable = force_writable + + def __getattr__(self, name): + return getattr(self._stream, name) + + def read1(self, size): + f = getattr(self._stream, "read1", None) + if f is not None: + return f(size) + # We only dispatch to readline instead of read in Python 2 as we + # do not want cause problems with the different implementation + # of line buffering. + if PY2: + return self._stream.readline(size) + return self._stream.read(size) + + def readable(self): + if self._force_readable: + return True + x = getattr(self._stream, "readable", None) + if x is not None: + return x() + try: + self._stream.read(0) + except Exception: + return False + return True + + def writable(self): + if self._force_writable: + return True + x = getattr(self._stream, "writable", None) + if x is not None: + return x() + try: + self._stream.write("") + except Exception: + try: + self._stream.write(b"") + except Exception: + return False + return True + + def seekable(self): + x = getattr(self._stream, "seekable", None) + if x is not None: + return x() + try: + self._stream.seek(self._stream.tell()) + except Exception: + return False + return True + + +if PY2: + text_type = unicode + raw_input = raw_input + string_types = (str, unicode) + int_types = (int, long) + iteritems = lambda x: x.iteritems() + range_type = xrange + + def is_bytes(x): + return isinstance(x, (buffer, bytearray)) + + _identifier_re = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_]*$") + + # For Windows, we need to force stdout/stdin/stderr to binary if it's + # fetched for that. This obviously is not the most correct way to do + # it as it changes global state. Unfortunately, there does not seem to + # be a clear better way to do it as just reopening the file in binary + # mode does not change anything. + # + # An option would be to do what Python 3 does and to open the file as + # binary only, patch it back to the system, and then use a wrapper + # stream that converts newlines. It's not quite clear what's the + # correct option here. + # + # This code also lives in _winconsole for the fallback to the console + # emulation stream. + # + # There are also Windows environments where the `msvcrt` module is not + # available (which is why we use try-catch instead of the WIN variable + # here), such as the Google App Engine development server on Windows. In + # those cases there is just nothing we can do. + def set_binary_mode(f): + return f + + try: + import msvcrt + except ImportError: + pass + else: + + def set_binary_mode(f): + try: + fileno = f.fileno() + except Exception: + pass + else: + msvcrt.setmode(fileno, os.O_BINARY) + return f + + try: + import fcntl + except ImportError: + pass + else: + + def set_binary_mode(f): + try: + fileno = f.fileno() + except Exception: + pass + else: + flags = fcntl.fcntl(fileno, fcntl.F_GETFL) + fcntl.fcntl(fileno, fcntl.F_SETFL, flags & ~os.O_NONBLOCK) + return f + + def isidentifier(x): + return _identifier_re.search(x) is not None + + def get_binary_stdin(): + return set_binary_mode(sys.stdin) + + def get_binary_stdout(): + _wrap_std_stream("stdout") + return set_binary_mode(sys.stdout) + + def get_binary_stderr(): + _wrap_std_stream("stderr") + return set_binary_mode(sys.stderr) + + def get_text_stdin(encoding=None, errors=None): + rv = _get_windows_console_stream(sys.stdin, encoding, errors) + if rv is not None: + return rv + return _make_text_stream(sys.stdin, encoding, errors, force_readable=True) + + def get_text_stdout(encoding=None, errors=None): + _wrap_std_stream("stdout") + rv = _get_windows_console_stream(sys.stdout, encoding, errors) + if rv is not None: + return rv + return _make_text_stream(sys.stdout, encoding, errors, force_writable=True) + + def get_text_stderr(encoding=None, errors=None): + _wrap_std_stream("stderr") + rv = _get_windows_console_stream(sys.stderr, encoding, errors) + if rv is not None: + return rv + return _make_text_stream(sys.stderr, encoding, errors, force_writable=True) + + def filename_to_ui(value): + if isinstance(value, bytes): + value = value.decode(get_filesystem_encoding(), "replace") + return value + + +else: + import io + + text_type = str + raw_input = input + string_types = (str,) + int_types = (int,) + range_type = range + isidentifier = lambda x: x.isidentifier() + iteritems = lambda x: iter(x.items()) + + def is_bytes(x): + return isinstance(x, (bytes, memoryview, bytearray)) + + def _is_binary_reader(stream, default=False): + try: + return isinstance(stream.read(0), bytes) + except Exception: + return default + # This happens in some cases where the stream was already + # closed. In this case, we assume the default. + + def _is_binary_writer(stream, default=False): + try: + stream.write(b"") + except Exception: + try: + stream.write("") + return False + except Exception: + pass + return default + return True + + def _find_binary_reader(stream): + # We need to figure out if the given stream is already binary. + # This can happen because the official docs recommend detaching + # the streams to get binary streams. Some code might do this, so + # we need to deal with this case explicitly. + if _is_binary_reader(stream, False): + return stream + + buf = getattr(stream, "buffer", None) + + # Same situation here; this time we assume that the buffer is + # actually binary in case it's closed. + if buf is not None and _is_binary_reader(buf, True): + return buf + + def _find_binary_writer(stream): + # We need to figure out if the given stream is already binary. + # This can happen because the official docs recommend detatching + # the streams to get binary streams. Some code might do this, so + # we need to deal with this case explicitly. + if _is_binary_writer(stream, False): + return stream + + buf = getattr(stream, "buffer", None) + + # Same situation here; this time we assume that the buffer is + # actually binary in case it's closed. + if buf is not None and _is_binary_writer(buf, True): + return buf + + def _stream_is_misconfigured(stream): + """A stream is misconfigured if its encoding is ASCII.""" + # If the stream does not have an encoding set, we assume it's set + # to ASCII. This appears to happen in certain unittest + # environments. It's not quite clear what the correct behavior is + # but this at least will force Click to recover somehow. + return is_ascii_encoding(getattr(stream, "encoding", None) or "ascii") + + def _is_compat_stream_attr(stream, attr, value): + """A stream attribute is compatible if it is equal to the + desired value or the desired value is unset and the attribute + has a value. + """ + stream_value = getattr(stream, attr, None) + return stream_value == value or (value is None and stream_value is not None) + + def _is_compatible_text_stream(stream, encoding, errors): + """Check if a stream's encoding and errors attributes are + compatible with the desired values. + """ + return _is_compat_stream_attr( + stream, "encoding", encoding + ) and _is_compat_stream_attr(stream, "errors", errors) + + def _force_correct_text_stream( + text_stream, + encoding, + errors, + is_binary, + find_binary, + force_readable=False, + force_writable=False, + ): + if is_binary(text_stream, False): + binary_reader = text_stream + else: + # If the stream looks compatible, and won't default to a + # misconfigured ascii encoding, return it as-is. + if _is_compatible_text_stream(text_stream, encoding, errors) and not ( + encoding is None and _stream_is_misconfigured(text_stream) + ): + return text_stream + + # Otherwise, get the underlying binary reader. + binary_reader = find_binary(text_stream) + + # If that's not possible, silently use the original reader + # and get mojibake instead of exceptions. + if binary_reader is None: + return text_stream + + # Default errors to replace instead of strict in order to get + # something that works. + if errors is None: + errors = "replace" + + # Wrap the binary stream in a text stream with the correct + # encoding parameters. + return _make_text_stream( + binary_reader, + encoding, + errors, + force_readable=force_readable, + force_writable=force_writable, + ) + + def _force_correct_text_reader(text_reader, encoding, errors, force_readable=False): + return _force_correct_text_stream( + text_reader, + encoding, + errors, + _is_binary_reader, + _find_binary_reader, + force_readable=force_readable, + ) + + def _force_correct_text_writer(text_writer, encoding, errors, force_writable=False): + return _force_correct_text_stream( + text_writer, + encoding, + errors, + _is_binary_writer, + _find_binary_writer, + force_writable=force_writable, + ) + + def get_binary_stdin(): + reader = _find_binary_reader(sys.stdin) + if reader is None: + raise RuntimeError("Was not able to determine binary stream for sys.stdin.") + return reader + + def get_binary_stdout(): + writer = _find_binary_writer(sys.stdout) + if writer is None: + raise RuntimeError( + "Was not able to determine binary stream for sys.stdout." + ) + return writer + + def get_binary_stderr(): + writer = _find_binary_writer(sys.stderr) + if writer is None: + raise RuntimeError( + "Was not able to determine binary stream for sys.stderr." + ) + return writer + + def get_text_stdin(encoding=None, errors=None): + rv = _get_windows_console_stream(sys.stdin, encoding, errors) + if rv is not None: + return rv + return _force_correct_text_reader( + sys.stdin, encoding, errors, force_readable=True + ) + + def get_text_stdout(encoding=None, errors=None): + rv = _get_windows_console_stream(sys.stdout, encoding, errors) + if rv is not None: + return rv + return _force_correct_text_writer( + sys.stdout, encoding, errors, force_writable=True + ) + + def get_text_stderr(encoding=None, errors=None): + rv = _get_windows_console_stream(sys.stderr, encoding, errors) + if rv is not None: + return rv + return _force_correct_text_writer( + sys.stderr, encoding, errors, force_writable=True + ) + + def filename_to_ui(value): + if isinstance(value, bytes): + value = value.decode(get_filesystem_encoding(), "replace") + else: + value = value.encode("utf-8", "surrogateescape").decode("utf-8", "replace") + return value + + +def get_streerror(e, default=None): + if hasattr(e, "strerror"): + msg = e.strerror + else: + if default is not None: + msg = default + else: + msg = str(e) + if isinstance(msg, bytes): + msg = msg.decode("utf-8", "replace") + return msg + + +def _wrap_io_open(file, mode, encoding, errors): + """On Python 2, :func:`io.open` returns a text file wrapper that + requires passing ``unicode`` to ``write``. Need to open the file in + binary mode then wrap it in a subclass that can write ``str`` and + ``unicode``. + + Also handles not passing ``encoding`` and ``errors`` in binary mode. + """ + binary = "b" in mode + + if binary: + kwargs = {} + else: + kwargs = {"encoding": encoding, "errors": errors} + + if not PY2 or binary: + return io.open(file, mode, **kwargs) + + f = io.open(file, "{}b".format(mode.replace("t", ""))) + return _make_text_stream(f, **kwargs) + + +def open_stream(filename, mode="r", encoding=None, errors="strict", atomic=False): + binary = "b" in mode + + # Standard streams first. These are simple because they don't need + # special handling for the atomic flag. It's entirely ignored. + if filename == "-": + if any(m in mode for m in ["w", "a", "x"]): + if binary: + return get_binary_stdout(), False + return get_text_stdout(encoding=encoding, errors=errors), False + if binary: + return get_binary_stdin(), False + return get_text_stdin(encoding=encoding, errors=errors), False + + # Non-atomic writes directly go out through the regular open functions. + if not atomic: + return _wrap_io_open(filename, mode, encoding, errors), True + + # Some usability stuff for atomic writes + if "a" in mode: + raise ValueError( + "Appending to an existing file is not supported, because that" + " would involve an expensive `copy`-operation to a temporary" + " file. Open the file in normal `w`-mode and copy explicitly" + " if that's what you're after." + ) + if "x" in mode: + raise ValueError("Use the `overwrite`-parameter instead.") + if "w" not in mode: + raise ValueError("Atomic writes only make sense with `w`-mode.") + + # Atomic writes are more complicated. They work by opening a file + # as a proxy in the same folder and then using the fdopen + # functionality to wrap it in a Python file. Then we wrap it in an + # atomic file that moves the file over on close. + import errno + import random + + try: + perm = os.stat(filename).st_mode + except OSError: + perm = None + + flags = os.O_RDWR | os.O_CREAT | os.O_EXCL + + if binary: + flags |= getattr(os, "O_BINARY", 0) + + while True: + tmp_filename = os.path.join( + os.path.dirname(filename), + ".__atomic-write{:08x}".format(random.randrange(1 << 32)), + ) + try: + fd = os.open(tmp_filename, flags, 0o666 if perm is None else perm) + break + except OSError as e: + if e.errno == errno.EEXIST or ( + os.name == "nt" + and e.errno == errno.EACCES + and os.path.isdir(e.filename) + and os.access(e.filename, os.W_OK) + ): + continue + raise + + if perm is not None: + os.chmod(tmp_filename, perm) # in case perm includes bits in umask + + f = _wrap_io_open(fd, mode, encoding, errors) + return _AtomicFile(f, tmp_filename, os.path.realpath(filename)), True + + +# Used in a destructor call, needs extra protection from interpreter cleanup. +if hasattr(os, "replace"): + _replace = os.replace + _can_replace = True +else: + _replace = os.rename + _can_replace = not WIN + + +class _AtomicFile(object): + def __init__(self, f, tmp_filename, real_filename): + self._f = f + self._tmp_filename = tmp_filename + self._real_filename = real_filename + self.closed = False + + @property + def name(self): + return self._real_filename + + def close(self, delete=False): + if self.closed: + return + self._f.close() + if not _can_replace: + try: + os.remove(self._real_filename) + except OSError: + pass + _replace(self._tmp_filename, self._real_filename) + self.closed = True + + def __getattr__(self, name): + return getattr(self._f, name) + + def __enter__(self): + return self + + def __exit__(self, exc_type, exc_value, tb): + self.close(delete=exc_type is not None) + + def __repr__(self): + return repr(self._f) + + +auto_wrap_for_ansi = None +colorama = None +get_winterm_size = None + + +def strip_ansi(value): + return _ansi_re.sub("", value) + + +def _is_jupyter_kernel_output(stream): + if WIN: + # TODO: Couldn't test on Windows, should't try to support until + # someone tests the details wrt colorama. + return + + while isinstance(stream, (_FixupStream, _NonClosingTextIOWrapper)): + stream = stream._stream + + return stream.__class__.__module__.startswith("ipykernel.") + + +def should_strip_ansi(stream=None, color=None): + if color is None: + if stream is None: + stream = sys.stdin + return not isatty(stream) and not _is_jupyter_kernel_output(stream) + return not color + + +# If we're on Windows, we provide transparent integration through +# colorama. This will make ANSI colors through the echo function +# work automatically. +if WIN: + # Windows has a smaller terminal + DEFAULT_COLUMNS = 79 + + from ._winconsole import _get_windows_console_stream, _wrap_std_stream + + def _get_argv_encoding(): + import locale + + return locale.getpreferredencoding() + + if PY2: + + def raw_input(prompt=""): + sys.stderr.flush() + if prompt: + stdout = _default_text_stdout() + stdout.write(prompt) + stdin = _default_text_stdin() + return stdin.readline().rstrip("\r\n") + + try: + import colorama + except ImportError: + pass + else: + _ansi_stream_wrappers = WeakKeyDictionary() + + def auto_wrap_for_ansi(stream, color=None): + """This function wraps a stream so that calls through colorama + are issued to the win32 console API to recolor on demand. It + also ensures to reset the colors if a write call is interrupted + to not destroy the console afterwards. + """ + try: + cached = _ansi_stream_wrappers.get(stream) + except Exception: + cached = None + if cached is not None: + return cached + strip = should_strip_ansi(stream, color) + ansi_wrapper = colorama.AnsiToWin32(stream, strip=strip) + rv = ansi_wrapper.stream + _write = rv.write + + def _safe_write(s): + try: + return _write(s) + except: + ansi_wrapper.reset_all() + raise + + rv.write = _safe_write + try: + _ansi_stream_wrappers[stream] = rv + except Exception: + pass + return rv + + def get_winterm_size(): + win = colorama.win32.GetConsoleScreenBufferInfo( + colorama.win32.STDOUT + ).srWindow + return win.Right - win.Left, win.Bottom - win.Top + + +else: + + def _get_argv_encoding(): + return getattr(sys.stdin, "encoding", None) or get_filesystem_encoding() + + _get_windows_console_stream = lambda *x: None + _wrap_std_stream = lambda *x: None + + +def term_len(x): + return len(strip_ansi(x)) + + +def isatty(stream): + try: + return stream.isatty() + except Exception: + return False + + +def _make_cached_stream_func(src_func, wrapper_func): + cache = WeakKeyDictionary() + + def func(): + stream = src_func() + try: + rv = cache.get(stream) + except Exception: + rv = None + if rv is not None: + return rv + rv = wrapper_func() + try: + stream = src_func() # In case wrapper_func() modified the stream + cache[stream] = rv + except Exception: + pass + return rv + + return func + + +_default_text_stdin = _make_cached_stream_func(lambda: sys.stdin, get_text_stdin) +_default_text_stdout = _make_cached_stream_func(lambda: sys.stdout, get_text_stdout) +_default_text_stderr = _make_cached_stream_func(lambda: sys.stderr, get_text_stderr) + + +binary_streams = { + "stdin": get_binary_stdin, + "stdout": get_binary_stdout, + "stderr": get_binary_stderr, +} + +text_streams = { + "stdin": get_text_stdin, + "stdout": get_text_stdout, + "stderr": get_text_stderr, +} diff --git a/matteo_env/Lib/site-packages/click/_termui_impl.py b/matteo_env/Lib/site-packages/click/_termui_impl.py new file mode 100644 index 0000000..88bec37 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_termui_impl.py @@ -0,0 +1,657 @@ +# -*- coding: utf-8 -*- +""" +This module contains implementations for the termui module. To keep the +import time of Click down, some infrequently used functionality is +placed in this module and only imported as needed. +""" +import contextlib +import math +import os +import sys +import time + +from ._compat import _default_text_stdout +from ._compat import CYGWIN +from ._compat import get_best_encoding +from ._compat import int_types +from ._compat import isatty +from ._compat import open_stream +from ._compat import range_type +from ._compat import strip_ansi +from ._compat import term_len +from ._compat import WIN +from .exceptions import ClickException +from .utils import echo + +if os.name == "nt": + BEFORE_BAR = "\r" + AFTER_BAR = "\n" +else: + BEFORE_BAR = "\r\033[?25l" + AFTER_BAR = "\033[?25h\n" + + +def _length_hint(obj): + """Returns the length hint of an object.""" + try: + return len(obj) + except (AttributeError, TypeError): + try: + get_hint = type(obj).__length_hint__ + except AttributeError: + return None + try: + hint = get_hint(obj) + except TypeError: + return None + if hint is NotImplemented or not isinstance(hint, int_types) or hint < 0: + return None + return hint + + +class ProgressBar(object): + def __init__( + self, + iterable, + length=None, + fill_char="#", + empty_char=" ", + bar_template="%(bar)s", + info_sep=" ", + show_eta=True, + show_percent=None, + show_pos=False, + item_show_func=None, + label=None, + file=None, + color=None, + width=30, + ): + self.fill_char = fill_char + self.empty_char = empty_char + self.bar_template = bar_template + self.info_sep = info_sep + self.show_eta = show_eta + self.show_percent = show_percent + self.show_pos = show_pos + self.item_show_func = item_show_func + self.label = label or "" + if file is None: + file = _default_text_stdout() + self.file = file + self.color = color + self.width = width + self.autowidth = width == 0 + + if length is None: + length = _length_hint(iterable) + if iterable is None: + if length is None: + raise TypeError("iterable or length is required") + iterable = range_type(length) + self.iter = iter(iterable) + self.length = length + self.length_known = length is not None + self.pos = 0 + self.avg = [] + self.start = self.last_eta = time.time() + self.eta_known = False + self.finished = False + self.max_width = None + self.entered = False + self.current_item = None + self.is_hidden = not isatty(self.file) + self._last_line = None + self.short_limit = 0.5 + + def __enter__(self): + self.entered = True + self.render_progress() + return self + + def __exit__(self, exc_type, exc_value, tb): + self.render_finish() + + def __iter__(self): + if not self.entered: + raise RuntimeError("You need to use progress bars in a with block.") + self.render_progress() + return self.generator() + + def __next__(self): + # Iteration is defined in terms of a generator function, + # returned by iter(self); use that to define next(). This works + # because `self.iter` is an iterable consumed by that generator, + # so it is re-entry safe. Calling `next(self.generator())` + # twice works and does "what you want". + return next(iter(self)) + + # Python 2 compat + next = __next__ + + def is_fast(self): + return time.time() - self.start <= self.short_limit + + def render_finish(self): + if self.is_hidden or self.is_fast(): + return + self.file.write(AFTER_BAR) + self.file.flush() + + @property + def pct(self): + if self.finished: + return 1.0 + return min(self.pos / (float(self.length) or 1), 1.0) + + @property + def time_per_iteration(self): + if not self.avg: + return 0.0 + return sum(self.avg) / float(len(self.avg)) + + @property + def eta(self): + if self.length_known and not self.finished: + return self.time_per_iteration * (self.length - self.pos) + return 0.0 + + def format_eta(self): + if self.eta_known: + t = int(self.eta) + seconds = t % 60 + t //= 60 + minutes = t % 60 + t //= 60 + hours = t % 24 + t //= 24 + if t > 0: + return "{}d {:02}:{:02}:{:02}".format(t, hours, minutes, seconds) + else: + return "{:02}:{:02}:{:02}".format(hours, minutes, seconds) + return "" + + def format_pos(self): + pos = str(self.pos) + if self.length_known: + pos += "/{}".format(self.length) + return pos + + def format_pct(self): + return "{: 4}%".format(int(self.pct * 100))[1:] + + def format_bar(self): + if self.length_known: + bar_length = int(self.pct * self.width) + bar = self.fill_char * bar_length + bar += self.empty_char * (self.width - bar_length) + elif self.finished: + bar = self.fill_char * self.width + else: + bar = list(self.empty_char * (self.width or 1)) + if self.time_per_iteration != 0: + bar[ + int( + (math.cos(self.pos * self.time_per_iteration) / 2.0 + 0.5) + * self.width + ) + ] = self.fill_char + bar = "".join(bar) + return bar + + def format_progress_line(self): + show_percent = self.show_percent + + info_bits = [] + if self.length_known and show_percent is None: + show_percent = not self.show_pos + + if self.show_pos: + info_bits.append(self.format_pos()) + if show_percent: + info_bits.append(self.format_pct()) + if self.show_eta and self.eta_known and not self.finished: + info_bits.append(self.format_eta()) + if self.item_show_func is not None: + item_info = self.item_show_func(self.current_item) + if item_info is not None: + info_bits.append(item_info) + + return ( + self.bar_template + % { + "label": self.label, + "bar": self.format_bar(), + "info": self.info_sep.join(info_bits), + } + ).rstrip() + + def render_progress(self): + from .termui import get_terminal_size + + if self.is_hidden: + return + + buf = [] + # Update width in case the terminal has been resized + if self.autowidth: + old_width = self.width + self.width = 0 + clutter_length = term_len(self.format_progress_line()) + new_width = max(0, get_terminal_size()[0] - clutter_length) + if new_width < old_width: + buf.append(BEFORE_BAR) + buf.append(" " * self.max_width) + self.max_width = new_width + self.width = new_width + + clear_width = self.width + if self.max_width is not None: + clear_width = self.max_width + + buf.append(BEFORE_BAR) + line = self.format_progress_line() + line_len = term_len(line) + if self.max_width is None or self.max_width < line_len: + self.max_width = line_len + + buf.append(line) + buf.append(" " * (clear_width - line_len)) + line = "".join(buf) + # Render the line only if it changed. + + if line != self._last_line and not self.is_fast(): + self._last_line = line + echo(line, file=self.file, color=self.color, nl=False) + self.file.flush() + + def make_step(self, n_steps): + self.pos += n_steps + if self.length_known and self.pos >= self.length: + self.finished = True + + if (time.time() - self.last_eta) < 1.0: + return + + self.last_eta = time.time() + + # self.avg is a rolling list of length <= 7 of steps where steps are + # defined as time elapsed divided by the total progress through + # self.length. + if self.pos: + step = (time.time() - self.start) / self.pos + else: + step = time.time() - self.start + + self.avg = self.avg[-6:] + [step] + + self.eta_known = self.length_known + + def update(self, n_steps): + self.make_step(n_steps) + self.render_progress() + + def finish(self): + self.eta_known = 0 + self.current_item = None + self.finished = True + + def generator(self): + """Return a generator which yields the items added to the bar + during construction, and updates the progress bar *after* the + yielded block returns. + """ + # WARNING: the iterator interface for `ProgressBar` relies on + # this and only works because this is a simple generator which + # doesn't create or manage additional state. If this function + # changes, the impact should be evaluated both against + # `iter(bar)` and `next(bar)`. `next()` in particular may call + # `self.generator()` repeatedly, and this must remain safe in + # order for that interface to work. + if not self.entered: + raise RuntimeError("You need to use progress bars in a with block.") + + if self.is_hidden: + for rv in self.iter: + yield rv + else: + for rv in self.iter: + self.current_item = rv + yield rv + self.update(1) + self.finish() + self.render_progress() + + +def pager(generator, color=None): + """Decide what method to use for paging through text.""" + stdout = _default_text_stdout() + if not isatty(sys.stdin) or not isatty(stdout): + return _nullpager(stdout, generator, color) + pager_cmd = (os.environ.get("PAGER", None) or "").strip() + if pager_cmd: + if WIN: + return _tempfilepager(generator, pager_cmd, color) + return _pipepager(generator, pager_cmd, color) + if os.environ.get("TERM") in ("dumb", "emacs"): + return _nullpager(stdout, generator, color) + if WIN or sys.platform.startswith("os2"): + return _tempfilepager(generator, "more <", color) + if hasattr(os, "system") and os.system("(less) 2>/dev/null") == 0: + return _pipepager(generator, "less", color) + + import tempfile + + fd, filename = tempfile.mkstemp() + os.close(fd) + try: + if hasattr(os, "system") and os.system('more "{}"'.format(filename)) == 0: + return _pipepager(generator, "more", color) + return _nullpager(stdout, generator, color) + finally: + os.unlink(filename) + + +def _pipepager(generator, cmd, color): + """Page through text by feeding it to another program. Invoking a + pager through this might support colors. + """ + import subprocess + + env = dict(os.environ) + + # If we're piping to less we might support colors under the + # condition that + cmd_detail = cmd.rsplit("/", 1)[-1].split() + if color is None and cmd_detail[0] == "less": + less_flags = "{}{}".format(os.environ.get("LESS", ""), " ".join(cmd_detail[1:])) + if not less_flags: + env["LESS"] = "-R" + color = True + elif "r" in less_flags or "R" in less_flags: + color = True + + c = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE, env=env) + encoding = get_best_encoding(c.stdin) + try: + for text in generator: + if not color: + text = strip_ansi(text) + + c.stdin.write(text.encode(encoding, "replace")) + except (IOError, KeyboardInterrupt): + pass + else: + c.stdin.close() + + # Less doesn't respect ^C, but catches it for its own UI purposes (aborting + # search or other commands inside less). + # + # That means when the user hits ^C, the parent process (click) terminates, + # but less is still alive, paging the output and messing up the terminal. + # + # If the user wants to make the pager exit on ^C, they should set + # `LESS='-K'`. It's not our decision to make. + while True: + try: + c.wait() + except KeyboardInterrupt: + pass + else: + break + + +def _tempfilepager(generator, cmd, color): + """Page through text by invoking a program on a temporary file.""" + import tempfile + + filename = tempfile.mktemp() + # TODO: This never terminates if the passed generator never terminates. + text = "".join(generator) + if not color: + text = strip_ansi(text) + encoding = get_best_encoding(sys.stdout) + with open_stream(filename, "wb")[0] as f: + f.write(text.encode(encoding)) + try: + os.system('{} "{}"'.format(cmd, filename)) + finally: + os.unlink(filename) + + +def _nullpager(stream, generator, color): + """Simply print unformatted text. This is the ultimate fallback.""" + for text in generator: + if not color: + text = strip_ansi(text) + stream.write(text) + + +class Editor(object): + def __init__(self, editor=None, env=None, require_save=True, extension=".txt"): + self.editor = editor + self.env = env + self.require_save = require_save + self.extension = extension + + def get_editor(self): + if self.editor is not None: + return self.editor + for key in "VISUAL", "EDITOR": + rv = os.environ.get(key) + if rv: + return rv + if WIN: + return "notepad" + for editor in "sensible-editor", "vim", "nano": + if os.system("which {} >/dev/null 2>&1".format(editor)) == 0: + return editor + return "vi" + + def edit_file(self, filename): + import subprocess + + editor = self.get_editor() + if self.env: + environ = os.environ.copy() + environ.update(self.env) + else: + environ = None + try: + c = subprocess.Popen( + '{} "{}"'.format(editor, filename), env=environ, shell=True, + ) + exit_code = c.wait() + if exit_code != 0: + raise ClickException("{}: Editing failed!".format(editor)) + except OSError as e: + raise ClickException("{}: Editing failed: {}".format(editor, e)) + + def edit(self, text): + import tempfile + + text = text or "" + if text and not text.endswith("\n"): + text += "\n" + + fd, name = tempfile.mkstemp(prefix="editor-", suffix=self.extension) + try: + if WIN: + encoding = "utf-8-sig" + text = text.replace("\n", "\r\n") + else: + encoding = "utf-8" + text = text.encode(encoding) + + f = os.fdopen(fd, "wb") + f.write(text) + f.close() + timestamp = os.path.getmtime(name) + + self.edit_file(name) + + if self.require_save and os.path.getmtime(name) == timestamp: + return None + + f = open(name, "rb") + try: + rv = f.read() + finally: + f.close() + return rv.decode("utf-8-sig").replace("\r\n", "\n") + finally: + os.unlink(name) + + +def open_url(url, wait=False, locate=False): + import subprocess + + def _unquote_file(url): + try: + import urllib + except ImportError: + import urllib + if url.startswith("file://"): + url = urllib.unquote(url[7:]) + return url + + if sys.platform == "darwin": + args = ["open"] + if wait: + args.append("-W") + if locate: + args.append("-R") + args.append(_unquote_file(url)) + null = open("/dev/null", "w") + try: + return subprocess.Popen(args, stderr=null).wait() + finally: + null.close() + elif WIN: + if locate: + url = _unquote_file(url) + args = 'explorer /select,"{}"'.format(_unquote_file(url.replace('"', ""))) + else: + args = 'start {} "" "{}"'.format( + "/WAIT" if wait else "", url.replace('"', "") + ) + return os.system(args) + elif CYGWIN: + if locate: + url = _unquote_file(url) + args = 'cygstart "{}"'.format(os.path.dirname(url).replace('"', "")) + else: + args = 'cygstart {} "{}"'.format("-w" if wait else "", url.replace('"', "")) + return os.system(args) + + try: + if locate: + url = os.path.dirname(_unquote_file(url)) or "." + else: + url = _unquote_file(url) + c = subprocess.Popen(["xdg-open", url]) + if wait: + return c.wait() + return 0 + except OSError: + if url.startswith(("http://", "https://")) and not locate and not wait: + import webbrowser + + webbrowser.open(url) + return 0 + return 1 + + +def _translate_ch_to_exc(ch): + if ch == u"\x03": + raise KeyboardInterrupt() + if ch == u"\x04" and not WIN: # Unix-like, Ctrl+D + raise EOFError() + if ch == u"\x1a" and WIN: # Windows, Ctrl+Z + raise EOFError() + + +if WIN: + import msvcrt + + @contextlib.contextmanager + def raw_terminal(): + yield + + def getchar(echo): + # The function `getch` will return a bytes object corresponding to + # the pressed character. Since Windows 10 build 1803, it will also + # return \x00 when called a second time after pressing a regular key. + # + # `getwch` does not share this probably-bugged behavior. Moreover, it + # returns a Unicode object by default, which is what we want. + # + # Either of these functions will return \x00 or \xe0 to indicate + # a special key, and you need to call the same function again to get + # the "rest" of the code. The fun part is that \u00e0 is + # "latin small letter a with grave", so if you type that on a French + # keyboard, you _also_ get a \xe0. + # E.g., consider the Up arrow. This returns \xe0 and then \x48. The + # resulting Unicode string reads as "a with grave" + "capital H". + # This is indistinguishable from when the user actually types + # "a with grave" and then "capital H". + # + # When \xe0 is returned, we assume it's part of a special-key sequence + # and call `getwch` again, but that means that when the user types + # the \u00e0 character, `getchar` doesn't return until a second + # character is typed. + # The alternative is returning immediately, but that would mess up + # cross-platform handling of arrow keys and others that start with + # \xe0. Another option is using `getch`, but then we can't reliably + # read non-ASCII characters, because return values of `getch` are + # limited to the current 8-bit codepage. + # + # Anyway, Click doesn't claim to do this Right(tm), and using `getwch` + # is doing the right thing in more situations than with `getch`. + if echo: + func = msvcrt.getwche + else: + func = msvcrt.getwch + + rv = func() + if rv in (u"\x00", u"\xe0"): + # \x00 and \xe0 are control characters that indicate special key, + # see above. + rv += func() + _translate_ch_to_exc(rv) + return rv + + +else: + import tty + import termios + + @contextlib.contextmanager + def raw_terminal(): + if not isatty(sys.stdin): + f = open("/dev/tty") + fd = f.fileno() + else: + fd = sys.stdin.fileno() + f = None + try: + old_settings = termios.tcgetattr(fd) + try: + tty.setraw(fd) + yield fd + finally: + termios.tcsetattr(fd, termios.TCSADRAIN, old_settings) + sys.stdout.flush() + if f is not None: + f.close() + except termios.error: + pass + + def getchar(echo): + with raw_terminal() as fd: + ch = os.read(fd, 32) + ch = ch.decode(get_best_encoding(sys.stdin), "replace") + if echo and isatty(sys.stdout): + sys.stdout.write(ch) + _translate_ch_to_exc(ch) + return ch diff --git a/matteo_env/Lib/site-packages/click/_textwrap.py b/matteo_env/Lib/site-packages/click/_textwrap.py new file mode 100644 index 0000000..6959087 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_textwrap.py @@ -0,0 +1,37 @@ +import textwrap +from contextlib import contextmanager + + +class TextWrapper(textwrap.TextWrapper): + def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width): + space_left = max(width - cur_len, 1) + + if self.break_long_words: + last = reversed_chunks[-1] + cut = last[:space_left] + res = last[space_left:] + cur_line.append(cut) + reversed_chunks[-1] = res + elif not cur_line: + cur_line.append(reversed_chunks.pop()) + + @contextmanager + def extra_indent(self, indent): + old_initial_indent = self.initial_indent + old_subsequent_indent = self.subsequent_indent + self.initial_indent += indent + self.subsequent_indent += indent + try: + yield + finally: + self.initial_indent = old_initial_indent + self.subsequent_indent = old_subsequent_indent + + def indent_only(self, text): + rv = [] + for idx, line in enumerate(text.splitlines()): + indent = self.initial_indent + if idx > 0: + indent = self.subsequent_indent + rv.append(indent + line) + return "\n".join(rv) diff --git a/matteo_env/Lib/site-packages/click/_unicodefun.py b/matteo_env/Lib/site-packages/click/_unicodefun.py new file mode 100644 index 0000000..781c365 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_unicodefun.py @@ -0,0 +1,131 @@ +import codecs +import os +import sys + +from ._compat import PY2 + + +def _find_unicode_literals_frame(): + import __future__ + + if not hasattr(sys, "_getframe"): # not all Python implementations have it + return 0 + frm = sys._getframe(1) + idx = 1 + while frm is not None: + if frm.f_globals.get("__name__", "").startswith("click."): + frm = frm.f_back + idx += 1 + elif frm.f_code.co_flags & __future__.unicode_literals.compiler_flag: + return idx + else: + break + return 0 + + +def _check_for_unicode_literals(): + if not __debug__: + return + + from . import disable_unicode_literals_warning + + if not PY2 or disable_unicode_literals_warning: + return + bad_frame = _find_unicode_literals_frame() + if bad_frame <= 0: + return + from warnings import warn + + warn( + Warning( + "Click detected the use of the unicode_literals __future__" + " import. This is heavily discouraged because it can" + " introduce subtle bugs in your code. You should instead" + ' use explicit u"" literals for your unicode strings. For' + " more information see" + " https://click.palletsprojects.com/python3/" + ), + stacklevel=bad_frame, + ) + + +def _verify_python3_env(): + """Ensures that the environment is good for unicode on Python 3.""" + if PY2: + return + try: + import locale + + fs_enc = codecs.lookup(locale.getpreferredencoding()).name + except Exception: + fs_enc = "ascii" + if fs_enc != "ascii": + return + + extra = "" + if os.name == "posix": + import subprocess + + try: + rv = subprocess.Popen( + ["locale", "-a"], stdout=subprocess.PIPE, stderr=subprocess.PIPE + ).communicate()[0] + except OSError: + rv = b"" + good_locales = set() + has_c_utf8 = False + + # Make sure we're operating on text here. + if isinstance(rv, bytes): + rv = rv.decode("ascii", "replace") + + for line in rv.splitlines(): + locale = line.strip() + if locale.lower().endswith((".utf-8", ".utf8")): + good_locales.add(locale) + if locale.lower() in ("c.utf8", "c.utf-8"): + has_c_utf8 = True + + extra += "\n\n" + if not good_locales: + extra += ( + "Additional information: on this system no suitable" + " UTF-8 locales were discovered. This most likely" + " requires resolving by reconfiguring the locale" + " system." + ) + elif has_c_utf8: + extra += ( + "This system supports the C.UTF-8 locale which is" + " recommended. You might be able to resolve your issue" + " by exporting the following environment variables:\n\n" + " export LC_ALL=C.UTF-8\n" + " export LANG=C.UTF-8" + ) + else: + extra += ( + "This system lists a couple of UTF-8 supporting locales" + " that you can pick from. The following suitable" + " locales were discovered: {}".format(", ".join(sorted(good_locales))) + ) + + bad_locale = None + for locale in os.environ.get("LC_ALL"), os.environ.get("LANG"): + if locale and locale.lower().endswith((".utf-8", ".utf8")): + bad_locale = locale + if locale is not None: + break + if bad_locale is not None: + extra += ( + "\n\nClick discovered that you exported a UTF-8 locale" + " but the locale system could not pick up from it" + " because it does not exist. The exported locale is" + " '{}' but it is not supported".format(bad_locale) + ) + + raise RuntimeError( + "Click will abort further execution because Python 3 was" + " configured to use ASCII as encoding for the environment." + " Consult https://click.palletsprojects.com/python3/ for" + " mitigation steps.{}".format(extra) + ) diff --git a/matteo_env/Lib/site-packages/click/_winconsole.py b/matteo_env/Lib/site-packages/click/_winconsole.py new file mode 100644 index 0000000..b6c4274 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/_winconsole.py @@ -0,0 +1,370 @@ +# -*- coding: utf-8 -*- +# This module is based on the excellent work by Adam Bartoš who +# provided a lot of what went into the implementation here in +# the discussion to issue1602 in the Python bug tracker. +# +# There are some general differences in regards to how this works +# compared to the original patches as we do not need to patch +# the entire interpreter but just work in our little world of +# echo and prmopt. +import ctypes +import io +import os +import sys +import time +import zlib +from ctypes import byref +from ctypes import c_char +from ctypes import c_char_p +from ctypes import c_int +from ctypes import c_ssize_t +from ctypes import c_ulong +from ctypes import c_void_p +from ctypes import POINTER +from ctypes import py_object +from ctypes import windll +from ctypes import WinError +from ctypes import WINFUNCTYPE +from ctypes.wintypes import DWORD +from ctypes.wintypes import HANDLE +from ctypes.wintypes import LPCWSTR +from ctypes.wintypes import LPWSTR + +import msvcrt + +from ._compat import _NonClosingTextIOWrapper +from ._compat import PY2 +from ._compat import text_type + +try: + from ctypes import pythonapi + + PyObject_GetBuffer = pythonapi.PyObject_GetBuffer + PyBuffer_Release = pythonapi.PyBuffer_Release +except ImportError: + pythonapi = None + + +c_ssize_p = POINTER(c_ssize_t) + +kernel32 = windll.kernel32 +GetStdHandle = kernel32.GetStdHandle +ReadConsoleW = kernel32.ReadConsoleW +WriteConsoleW = kernel32.WriteConsoleW +GetConsoleMode = kernel32.GetConsoleMode +GetLastError = kernel32.GetLastError +GetCommandLineW = WINFUNCTYPE(LPWSTR)(("GetCommandLineW", windll.kernel32)) +CommandLineToArgvW = WINFUNCTYPE(POINTER(LPWSTR), LPCWSTR, POINTER(c_int))( + ("CommandLineToArgvW", windll.shell32) +) +LocalFree = WINFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p)( + ("LocalFree", windll.kernel32) +) + + +STDIN_HANDLE = GetStdHandle(-10) +STDOUT_HANDLE = GetStdHandle(-11) +STDERR_HANDLE = GetStdHandle(-12) + + +PyBUF_SIMPLE = 0 +PyBUF_WRITABLE = 1 + +ERROR_SUCCESS = 0 +ERROR_NOT_ENOUGH_MEMORY = 8 +ERROR_OPERATION_ABORTED = 995 + +STDIN_FILENO = 0 +STDOUT_FILENO = 1 +STDERR_FILENO = 2 + +EOF = b"\x1a" +MAX_BYTES_WRITTEN = 32767 + + +class Py_buffer(ctypes.Structure): + _fields_ = [ + ("buf", c_void_p), + ("obj", py_object), + ("len", c_ssize_t), + ("itemsize", c_ssize_t), + ("readonly", c_int), + ("ndim", c_int), + ("format", c_char_p), + ("shape", c_ssize_p), + ("strides", c_ssize_p), + ("suboffsets", c_ssize_p), + ("internal", c_void_p), + ] + + if PY2: + _fields_.insert(-1, ("smalltable", c_ssize_t * 2)) + + +# On PyPy we cannot get buffers so our ability to operate here is +# serverly limited. +if pythonapi is None: + get_buffer = None +else: + + def get_buffer(obj, writable=False): + buf = Py_buffer() + flags = PyBUF_WRITABLE if writable else PyBUF_SIMPLE + PyObject_GetBuffer(py_object(obj), byref(buf), flags) + try: + buffer_type = c_char * buf.len + return buffer_type.from_address(buf.buf) + finally: + PyBuffer_Release(byref(buf)) + + +class _WindowsConsoleRawIOBase(io.RawIOBase): + def __init__(self, handle): + self.handle = handle + + def isatty(self): + io.RawIOBase.isatty(self) + return True + + +class _WindowsConsoleReader(_WindowsConsoleRawIOBase): + def readable(self): + return True + + def readinto(self, b): + bytes_to_be_read = len(b) + if not bytes_to_be_read: + return 0 + elif bytes_to_be_read % 2: + raise ValueError( + "cannot read odd number of bytes from UTF-16-LE encoded console" + ) + + buffer = get_buffer(b, writable=True) + code_units_to_be_read = bytes_to_be_read // 2 + code_units_read = c_ulong() + + rv = ReadConsoleW( + HANDLE(self.handle), + buffer, + code_units_to_be_read, + byref(code_units_read), + None, + ) + if GetLastError() == ERROR_OPERATION_ABORTED: + # wait for KeyboardInterrupt + time.sleep(0.1) + if not rv: + raise OSError("Windows error: {}".format(GetLastError())) + + if buffer[0] == EOF: + return 0 + return 2 * code_units_read.value + + +class _WindowsConsoleWriter(_WindowsConsoleRawIOBase): + def writable(self): + return True + + @staticmethod + def _get_error_message(errno): + if errno == ERROR_SUCCESS: + return "ERROR_SUCCESS" + elif errno == ERROR_NOT_ENOUGH_MEMORY: + return "ERROR_NOT_ENOUGH_MEMORY" + return "Windows error {}".format(errno) + + def write(self, b): + bytes_to_be_written = len(b) + buf = get_buffer(b) + code_units_to_be_written = min(bytes_to_be_written, MAX_BYTES_WRITTEN) // 2 + code_units_written = c_ulong() + + WriteConsoleW( + HANDLE(self.handle), + buf, + code_units_to_be_written, + byref(code_units_written), + None, + ) + bytes_written = 2 * code_units_written.value + + if bytes_written == 0 and bytes_to_be_written > 0: + raise OSError(self._get_error_message(GetLastError())) + return bytes_written + + +class ConsoleStream(object): + def __init__(self, text_stream, byte_stream): + self._text_stream = text_stream + self.buffer = byte_stream + + @property + def name(self): + return self.buffer.name + + def write(self, x): + if isinstance(x, text_type): + return self._text_stream.write(x) + try: + self.flush() + except Exception: + pass + return self.buffer.write(x) + + def writelines(self, lines): + for line in lines: + self.write(line) + + def __getattr__(self, name): + return getattr(self._text_stream, name) + + def isatty(self): + return self.buffer.isatty() + + def __repr__(self): + return "".format( + self.name, self.encoding + ) + + +class WindowsChunkedWriter(object): + """ + Wraps a stream (such as stdout), acting as a transparent proxy for all + attribute access apart from method 'write()' which we wrap to write in + limited chunks due to a Windows limitation on binary console streams. + """ + + def __init__(self, wrapped): + # double-underscore everything to prevent clashes with names of + # attributes on the wrapped stream object. + self.__wrapped = wrapped + + def __getattr__(self, name): + return getattr(self.__wrapped, name) + + def write(self, text): + total_to_write = len(text) + written = 0 + + while written < total_to_write: + to_write = min(total_to_write - written, MAX_BYTES_WRITTEN) + self.__wrapped.write(text[written : written + to_write]) + written += to_write + + +_wrapped_std_streams = set() + + +def _wrap_std_stream(name): + # Python 2 & Windows 7 and below + if ( + PY2 + and sys.getwindowsversion()[:2] <= (6, 1) + and name not in _wrapped_std_streams + ): + setattr(sys, name, WindowsChunkedWriter(getattr(sys, name))) + _wrapped_std_streams.add(name) + + +def _get_text_stdin(buffer_stream): + text_stream = _NonClosingTextIOWrapper( + io.BufferedReader(_WindowsConsoleReader(STDIN_HANDLE)), + "utf-16-le", + "strict", + line_buffering=True, + ) + return ConsoleStream(text_stream, buffer_stream) + + +def _get_text_stdout(buffer_stream): + text_stream = _NonClosingTextIOWrapper( + io.BufferedWriter(_WindowsConsoleWriter(STDOUT_HANDLE)), + "utf-16-le", + "strict", + line_buffering=True, + ) + return ConsoleStream(text_stream, buffer_stream) + + +def _get_text_stderr(buffer_stream): + text_stream = _NonClosingTextIOWrapper( + io.BufferedWriter(_WindowsConsoleWriter(STDERR_HANDLE)), + "utf-16-le", + "strict", + line_buffering=True, + ) + return ConsoleStream(text_stream, buffer_stream) + + +if PY2: + + def _hash_py_argv(): + return zlib.crc32("\x00".join(sys.argv[1:])) + + _initial_argv_hash = _hash_py_argv() + + def _get_windows_argv(): + argc = c_int(0) + argv_unicode = CommandLineToArgvW(GetCommandLineW(), byref(argc)) + if not argv_unicode: + raise WinError() + try: + argv = [argv_unicode[i] for i in range(0, argc.value)] + finally: + LocalFree(argv_unicode) + del argv_unicode + + if not hasattr(sys, "frozen"): + argv = argv[1:] + while len(argv) > 0: + arg = argv[0] + if not arg.startswith("-") or arg == "-": + break + argv = argv[1:] + if arg.startswith(("-c", "-m")): + break + + return argv[1:] + + +_stream_factories = { + 0: _get_text_stdin, + 1: _get_text_stdout, + 2: _get_text_stderr, +} + + +def _is_console(f): + if not hasattr(f, "fileno"): + return False + + try: + fileno = f.fileno() + except OSError: + return False + + handle = msvcrt.get_osfhandle(fileno) + return bool(GetConsoleMode(handle, byref(DWORD()))) + + +def _get_windows_console_stream(f, encoding, errors): + if ( + get_buffer is not None + and encoding in ("utf-16-le", None) + and errors in ("strict", None) + and _is_console(f) + ): + func = _stream_factories.get(f.fileno()) + if func is not None: + if not PY2: + f = getattr(f, "buffer", None) + if f is None: + return None + else: + # If we are on Python 2 we need to set the stream that we + # deal with to binary mode as otherwise the exercise if a + # bit moot. The same problems apply as for + # get_binary_stdin and friends from _compat. + msvcrt.setmode(f.fileno(), os.O_BINARY) + return func(f) diff --git a/matteo_env/Lib/site-packages/click/core.py b/matteo_env/Lib/site-packages/click/core.py new file mode 100644 index 0000000..f58bf26 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/core.py @@ -0,0 +1,2030 @@ +import errno +import inspect +import os +import sys +from contextlib import contextmanager +from functools import update_wrapper +from itertools import repeat + +from ._compat import isidentifier +from ._compat import iteritems +from ._compat import PY2 +from ._compat import string_types +from ._unicodefun import _check_for_unicode_literals +from ._unicodefun import _verify_python3_env +from .exceptions import Abort +from .exceptions import BadParameter +from .exceptions import ClickException +from .exceptions import Exit +from .exceptions import MissingParameter +from .exceptions import UsageError +from .formatting import HelpFormatter +from .formatting import join_options +from .globals import pop_context +from .globals import push_context +from .parser import OptionParser +from .parser import split_opt +from .termui import confirm +from .termui import prompt +from .termui import style +from .types import BOOL +from .types import convert_type +from .types import IntRange +from .utils import echo +from .utils import get_os_args +from .utils import make_default_short_help +from .utils import make_str +from .utils import PacifyFlushWrapper + +_missing = object() + +SUBCOMMAND_METAVAR = "COMMAND [ARGS]..." +SUBCOMMANDS_METAVAR = "COMMAND1 [ARGS]... [COMMAND2 [ARGS]...]..." + +DEPRECATED_HELP_NOTICE = " (DEPRECATED)" +DEPRECATED_INVOKE_NOTICE = "DeprecationWarning: The command %(name)s is deprecated." + + +def _maybe_show_deprecated_notice(cmd): + if cmd.deprecated: + echo(style(DEPRECATED_INVOKE_NOTICE % {"name": cmd.name}, fg="red"), err=True) + + +def fast_exit(code): + """Exit without garbage collection, this speeds up exit by about 10ms for + things like bash completion. + """ + sys.stdout.flush() + sys.stderr.flush() + os._exit(code) + + +def _bashcomplete(cmd, prog_name, complete_var=None): + """Internal handler for the bash completion support.""" + if complete_var is None: + complete_var = "_{}_COMPLETE".format(prog_name.replace("-", "_").upper()) + complete_instr = os.environ.get(complete_var) + if not complete_instr: + return + + from ._bashcomplete import bashcomplete + + if bashcomplete(cmd, prog_name, complete_var, complete_instr): + fast_exit(1) + + +def _check_multicommand(base_command, cmd_name, cmd, register=False): + if not base_command.chain or not isinstance(cmd, MultiCommand): + return + if register: + hint = ( + "It is not possible to add multi commands as children to" + " another multi command that is in chain mode." + ) + else: + hint = ( + "Found a multi command as subcommand to a multi command" + " that is in chain mode. This is not supported." + ) + raise RuntimeError( + "{}. Command '{}' is set to chain and '{}' was added as" + " subcommand but it in itself is a multi command. ('{}' is a {}" + " within a chained {} named '{}').".format( + hint, + base_command.name, + cmd_name, + cmd_name, + cmd.__class__.__name__, + base_command.__class__.__name__, + base_command.name, + ) + ) + + +def batch(iterable, batch_size): + return list(zip(*repeat(iter(iterable), batch_size))) + + +def invoke_param_callback(callback, ctx, param, value): + code = getattr(callback, "__code__", None) + args = getattr(code, "co_argcount", 3) + + if args < 3: + from warnings import warn + + warn( + "Parameter callbacks take 3 args, (ctx, param, value). The" + " 2-arg style is deprecated and will be removed in 8.0.".format(callback), + DeprecationWarning, + stacklevel=3, + ) + return callback(ctx, value) + + return callback(ctx, param, value) + + +@contextmanager +def augment_usage_errors(ctx, param=None): + """Context manager that attaches extra information to exceptions.""" + try: + yield + except BadParameter as e: + if e.ctx is None: + e.ctx = ctx + if param is not None and e.param is None: + e.param = param + raise + except UsageError as e: + if e.ctx is None: + e.ctx = ctx + raise + + +def iter_params_for_processing(invocation_order, declaration_order): + """Given a sequence of parameters in the order as should be considered + for processing and an iterable of parameters that exist, this returns + a list in the correct order as they should be processed. + """ + + def sort_key(item): + try: + idx = invocation_order.index(item) + except ValueError: + idx = float("inf") + return (not item.is_eager, idx) + + return sorted(declaration_order, key=sort_key) + + +class Context(object): + """The context is a special internal object that holds state relevant + for the script execution at every single level. It's normally invisible + to commands unless they opt-in to getting access to it. + + The context is useful as it can pass internal objects around and can + control special execution features such as reading data from + environment variables. + + A context can be used as context manager in which case it will call + :meth:`close` on teardown. + + .. versionadded:: 2.0 + Added the `resilient_parsing`, `help_option_names`, + `token_normalize_func` parameters. + + .. versionadded:: 3.0 + Added the `allow_extra_args` and `allow_interspersed_args` + parameters. + + .. versionadded:: 4.0 + Added the `color`, `ignore_unknown_options`, and + `max_content_width` parameters. + + .. versionadded:: 7.1 + Added the `show_default` parameter. + + :param command: the command class for this context. + :param parent: the parent context. + :param info_name: the info name for this invocation. Generally this + is the most descriptive name for the script or + command. For the toplevel script it is usually + the name of the script, for commands below it it's + the name of the script. + :param obj: an arbitrary object of user data. + :param auto_envvar_prefix: the prefix to use for automatic environment + variables. If this is `None` then reading + from environment variables is disabled. This + does not affect manually set environment + variables which are always read. + :param default_map: a dictionary (like object) with default values + for parameters. + :param terminal_width: the width of the terminal. The default is + inherit from parent context. If no context + defines the terminal width then auto + detection will be applied. + :param max_content_width: the maximum width for content rendered by + Click (this currently only affects help + pages). This defaults to 80 characters if + not overridden. In other words: even if the + terminal is larger than that, Click will not + format things wider than 80 characters by + default. In addition to that, formatters might + add some safety mapping on the right. + :param resilient_parsing: if this flag is enabled then Click will + parse without any interactivity or callback + invocation. Default values will also be + ignored. This is useful for implementing + things such as completion support. + :param allow_extra_args: if this is set to `True` then extra arguments + at the end will not raise an error and will be + kept on the context. The default is to inherit + from the command. + :param allow_interspersed_args: if this is set to `False` then options + and arguments cannot be mixed. The + default is to inherit from the command. + :param ignore_unknown_options: instructs click to ignore options it does + not know and keeps them for later + processing. + :param help_option_names: optionally a list of strings that define how + the default help parameter is named. The + default is ``['--help']``. + :param token_normalize_func: an optional function that is used to + normalize tokens (options, choices, + etc.). This for instance can be used to + implement case insensitive behavior. + :param color: controls if the terminal supports ANSI colors or not. The + default is autodetection. This is only needed if ANSI + codes are used in texts that Click prints which is by + default not the case. This for instance would affect + help output. + :param show_default: if True, shows defaults for all options. + Even if an option is later created with show_default=False, + this command-level setting overrides it. + """ + + def __init__( + self, + command, + parent=None, + info_name=None, + obj=None, + auto_envvar_prefix=None, + default_map=None, + terminal_width=None, + max_content_width=None, + resilient_parsing=False, + allow_extra_args=None, + allow_interspersed_args=None, + ignore_unknown_options=None, + help_option_names=None, + token_normalize_func=None, + color=None, + show_default=None, + ): + #: the parent context or `None` if none exists. + self.parent = parent + #: the :class:`Command` for this context. + self.command = command + #: the descriptive information name + self.info_name = info_name + #: the parsed parameters except if the value is hidden in which + #: case it's not remembered. + self.params = {} + #: the leftover arguments. + self.args = [] + #: protected arguments. These are arguments that are prepended + #: to `args` when certain parsing scenarios are encountered but + #: must be never propagated to another arguments. This is used + #: to implement nested parsing. + self.protected_args = [] + if obj is None and parent is not None: + obj = parent.obj + #: the user object stored. + self.obj = obj + self._meta = getattr(parent, "meta", {}) + + #: A dictionary (-like object) with defaults for parameters. + if ( + default_map is None + and parent is not None + and parent.default_map is not None + ): + default_map = parent.default_map.get(info_name) + self.default_map = default_map + + #: This flag indicates if a subcommand is going to be executed. A + #: group callback can use this information to figure out if it's + #: being executed directly or because the execution flow passes + #: onwards to a subcommand. By default it's None, but it can be + #: the name of the subcommand to execute. + #: + #: If chaining is enabled this will be set to ``'*'`` in case + #: any commands are executed. It is however not possible to + #: figure out which ones. If you require this knowledge you + #: should use a :func:`resultcallback`. + self.invoked_subcommand = None + + if terminal_width is None and parent is not None: + terminal_width = parent.terminal_width + #: The width of the terminal (None is autodetection). + self.terminal_width = terminal_width + + if max_content_width is None and parent is not None: + max_content_width = parent.max_content_width + #: The maximum width of formatted content (None implies a sensible + #: default which is 80 for most things). + self.max_content_width = max_content_width + + if allow_extra_args is None: + allow_extra_args = command.allow_extra_args + #: Indicates if the context allows extra args or if it should + #: fail on parsing. + #: + #: .. versionadded:: 3.0 + self.allow_extra_args = allow_extra_args + + if allow_interspersed_args is None: + allow_interspersed_args = command.allow_interspersed_args + #: Indicates if the context allows mixing of arguments and + #: options or not. + #: + #: .. versionadded:: 3.0 + self.allow_interspersed_args = allow_interspersed_args + + if ignore_unknown_options is None: + ignore_unknown_options = command.ignore_unknown_options + #: Instructs click to ignore options that a command does not + #: understand and will store it on the context for later + #: processing. This is primarily useful for situations where you + #: want to call into external programs. Generally this pattern is + #: strongly discouraged because it's not possibly to losslessly + #: forward all arguments. + #: + #: .. versionadded:: 4.0 + self.ignore_unknown_options = ignore_unknown_options + + if help_option_names is None: + if parent is not None: + help_option_names = parent.help_option_names + else: + help_option_names = ["--help"] + + #: The names for the help options. + self.help_option_names = help_option_names + + if token_normalize_func is None and parent is not None: + token_normalize_func = parent.token_normalize_func + + #: An optional normalization function for tokens. This is + #: options, choices, commands etc. + self.token_normalize_func = token_normalize_func + + #: Indicates if resilient parsing is enabled. In that case Click + #: will do its best to not cause any failures and default values + #: will be ignored. Useful for completion. + self.resilient_parsing = resilient_parsing + + # If there is no envvar prefix yet, but the parent has one and + # the command on this level has a name, we can expand the envvar + # prefix automatically. + if auto_envvar_prefix is None: + if ( + parent is not None + and parent.auto_envvar_prefix is not None + and self.info_name is not None + ): + auto_envvar_prefix = "{}_{}".format( + parent.auto_envvar_prefix, self.info_name.upper() + ) + else: + auto_envvar_prefix = auto_envvar_prefix.upper() + if auto_envvar_prefix is not None: + auto_envvar_prefix = auto_envvar_prefix.replace("-", "_") + self.auto_envvar_prefix = auto_envvar_prefix + + if color is None and parent is not None: + color = parent.color + + #: Controls if styling output is wanted or not. + self.color = color + + self.show_default = show_default + + self._close_callbacks = [] + self._depth = 0 + + def __enter__(self): + self._depth += 1 + push_context(self) + return self + + def __exit__(self, exc_type, exc_value, tb): + self._depth -= 1 + if self._depth == 0: + self.close() + pop_context() + + @contextmanager + def scope(self, cleanup=True): + """This helper method can be used with the context object to promote + it to the current thread local (see :func:`get_current_context`). + The default behavior of this is to invoke the cleanup functions which + can be disabled by setting `cleanup` to `False`. The cleanup + functions are typically used for things such as closing file handles. + + If the cleanup is intended the context object can also be directly + used as a context manager. + + Example usage:: + + with ctx.scope(): + assert get_current_context() is ctx + + This is equivalent:: + + with ctx: + assert get_current_context() is ctx + + .. versionadded:: 5.0 + + :param cleanup: controls if the cleanup functions should be run or + not. The default is to run these functions. In + some situations the context only wants to be + temporarily pushed in which case this can be disabled. + Nested pushes automatically defer the cleanup. + """ + if not cleanup: + self._depth += 1 + try: + with self as rv: + yield rv + finally: + if not cleanup: + self._depth -= 1 + + @property + def meta(self): + """This is a dictionary which is shared with all the contexts + that are nested. It exists so that click utilities can store some + state here if they need to. It is however the responsibility of + that code to manage this dictionary well. + + The keys are supposed to be unique dotted strings. For instance + module paths are a good choice for it. What is stored in there is + irrelevant for the operation of click. However what is important is + that code that places data here adheres to the general semantics of + the system. + + Example usage:: + + LANG_KEY = f'{__name__}.lang' + + def set_language(value): + ctx = get_current_context() + ctx.meta[LANG_KEY] = value + + def get_language(): + return get_current_context().meta.get(LANG_KEY, 'en_US') + + .. versionadded:: 5.0 + """ + return self._meta + + def make_formatter(self): + """Creates the formatter for the help and usage output.""" + return HelpFormatter( + width=self.terminal_width, max_width=self.max_content_width + ) + + def call_on_close(self, f): + """This decorator remembers a function as callback that should be + executed when the context tears down. This is most useful to bind + resource handling to the script execution. For instance, file objects + opened by the :class:`File` type will register their close callbacks + here. + + :param f: the function to execute on teardown. + """ + self._close_callbacks.append(f) + return f + + def close(self): + """Invokes all close callbacks.""" + for cb in self._close_callbacks: + cb() + self._close_callbacks = [] + + @property + def command_path(self): + """The computed command path. This is used for the ``usage`` + information on the help page. It's automatically created by + combining the info names of the chain of contexts to the root. + """ + rv = "" + if self.info_name is not None: + rv = self.info_name + if self.parent is not None: + rv = "{} {}".format(self.parent.command_path, rv) + return rv.lstrip() + + def find_root(self): + """Finds the outermost context.""" + node = self + while node.parent is not None: + node = node.parent + return node + + def find_object(self, object_type): + """Finds the closest object of a given type.""" + node = self + while node is not None: + if isinstance(node.obj, object_type): + return node.obj + node = node.parent + + def ensure_object(self, object_type): + """Like :meth:`find_object` but sets the innermost object to a + new instance of `object_type` if it does not exist. + """ + rv = self.find_object(object_type) + if rv is None: + self.obj = rv = object_type() + return rv + + def lookup_default(self, name): + """Looks up the default for a parameter name. This by default + looks into the :attr:`default_map` if available. + """ + if self.default_map is not None: + rv = self.default_map.get(name) + if callable(rv): + rv = rv() + return rv + + def fail(self, message): + """Aborts the execution of the program with a specific error + message. + + :param message: the error message to fail with. + """ + raise UsageError(message, self) + + def abort(self): + """Aborts the script.""" + raise Abort() + + def exit(self, code=0): + """Exits the application with a given exit code.""" + raise Exit(code) + + def get_usage(self): + """Helper method to get formatted usage string for the current + context and command. + """ + return self.command.get_usage(self) + + def get_help(self): + """Helper method to get formatted help page for the current + context and command. + """ + return self.command.get_help(self) + + def invoke(*args, **kwargs): # noqa: B902 + """Invokes a command callback in exactly the way it expects. There + are two ways to invoke this method: + + 1. the first argument can be a callback and all other arguments and + keyword arguments are forwarded directly to the function. + 2. the first argument is a click command object. In that case all + arguments are forwarded as well but proper click parameters + (options and click arguments) must be keyword arguments and Click + will fill in defaults. + + Note that before Click 3.2 keyword arguments were not properly filled + in against the intention of this code and no context was created. For + more information about this change and why it was done in a bugfix + release see :ref:`upgrade-to-3.2`. + """ + self, callback = args[:2] + ctx = self + + # It's also possible to invoke another command which might or + # might not have a callback. In that case we also fill + # in defaults and make a new context for this command. + if isinstance(callback, Command): + other_cmd = callback + callback = other_cmd.callback + ctx = Context(other_cmd, info_name=other_cmd.name, parent=self) + if callback is None: + raise TypeError( + "The given command does not have a callback that can be invoked." + ) + + for param in other_cmd.params: + if param.name not in kwargs and param.expose_value: + kwargs[param.name] = param.get_default(ctx) + + args = args[2:] + with augment_usage_errors(self): + with ctx: + return callback(*args, **kwargs) + + def forward(*args, **kwargs): # noqa: B902 + """Similar to :meth:`invoke` but fills in default keyword + arguments from the current context if the other command expects + it. This cannot invoke callbacks directly, only other commands. + """ + self, cmd = args[:2] + + # It's also possible to invoke another command which might or + # might not have a callback. + if not isinstance(cmd, Command): + raise TypeError("Callback is not a command.") + + for param in self.params: + if param not in kwargs: + kwargs[param] = self.params[param] + + return self.invoke(cmd, **kwargs) + + +class BaseCommand(object): + """The base command implements the minimal API contract of commands. + Most code will never use this as it does not implement a lot of useful + functionality but it can act as the direct subclass of alternative + parsing methods that do not depend on the Click parser. + + For instance, this can be used to bridge Click and other systems like + argparse or docopt. + + Because base commands do not implement a lot of the API that other + parts of Click take for granted, they are not supported for all + operations. For instance, they cannot be used with the decorators + usually and they have no built-in callback system. + + .. versionchanged:: 2.0 + Added the `context_settings` parameter. + + :param name: the name of the command to use unless a group overrides it. + :param context_settings: an optional dictionary with defaults that are + passed to the context object. + """ + + #: the default for the :attr:`Context.allow_extra_args` flag. + allow_extra_args = False + #: the default for the :attr:`Context.allow_interspersed_args` flag. + allow_interspersed_args = True + #: the default for the :attr:`Context.ignore_unknown_options` flag. + ignore_unknown_options = False + + def __init__(self, name, context_settings=None): + #: the name the command thinks it has. Upon registering a command + #: on a :class:`Group` the group will default the command name + #: with this information. You should instead use the + #: :class:`Context`\'s :attr:`~Context.info_name` attribute. + self.name = name + if context_settings is None: + context_settings = {} + #: an optional dictionary with defaults passed to the context. + self.context_settings = context_settings + + def __repr__(self): + return "<{} {}>".format(self.__class__.__name__, self.name) + + def get_usage(self, ctx): + raise NotImplementedError("Base commands cannot get usage") + + def get_help(self, ctx): + raise NotImplementedError("Base commands cannot get help") + + def make_context(self, info_name, args, parent=None, **extra): + """This function when given an info name and arguments will kick + off the parsing and create a new :class:`Context`. It does not + invoke the actual command callback though. + + :param info_name: the info name for this invokation. Generally this + is the most descriptive name for the script or + command. For the toplevel script it's usually + the name of the script, for commands below it it's + the name of the script. + :param args: the arguments to parse as list of strings. + :param parent: the parent context if available. + :param extra: extra keyword arguments forwarded to the context + constructor. + """ + for key, value in iteritems(self.context_settings): + if key not in extra: + extra[key] = value + ctx = Context(self, info_name=info_name, parent=parent, **extra) + with ctx.scope(cleanup=False): + self.parse_args(ctx, args) + return ctx + + def parse_args(self, ctx, args): + """Given a context and a list of arguments this creates the parser + and parses the arguments, then modifies the context as necessary. + This is automatically invoked by :meth:`make_context`. + """ + raise NotImplementedError("Base commands do not know how to parse arguments.") + + def invoke(self, ctx): + """Given a context, this invokes the command. The default + implementation is raising a not implemented error. + """ + raise NotImplementedError("Base commands are not invokable by default") + + def main( + self, + args=None, + prog_name=None, + complete_var=None, + standalone_mode=True, + **extra + ): + """This is the way to invoke a script with all the bells and + whistles as a command line application. This will always terminate + the application after a call. If this is not wanted, ``SystemExit`` + needs to be caught. + + This method is also available by directly calling the instance of + a :class:`Command`. + + .. versionadded:: 3.0 + Added the `standalone_mode` flag to control the standalone mode. + + :param args: the arguments that should be used for parsing. If not + provided, ``sys.argv[1:]`` is used. + :param prog_name: the program name that should be used. By default + the program name is constructed by taking the file + name from ``sys.argv[0]``. + :param complete_var: the environment variable that controls the + bash completion support. The default is + ``"__COMPLETE"`` with prog_name in + uppercase. + :param standalone_mode: the default behavior is to invoke the script + in standalone mode. Click will then + handle exceptions and convert them into + error messages and the function will never + return but shut down the interpreter. If + this is set to `False` they will be + propagated to the caller and the return + value of this function is the return value + of :meth:`invoke`. + :param extra: extra keyword arguments are forwarded to the context + constructor. See :class:`Context` for more information. + """ + # If we are in Python 3, we will verify that the environment is + # sane at this point or reject further execution to avoid a + # broken script. + if not PY2: + _verify_python3_env() + else: + _check_for_unicode_literals() + + if args is None: + args = get_os_args() + else: + args = list(args) + + if prog_name is None: + prog_name = make_str( + os.path.basename(sys.argv[0] if sys.argv else __file__) + ) + + # Hook for the Bash completion. This only activates if the Bash + # completion is actually enabled, otherwise this is quite a fast + # noop. + _bashcomplete(self, prog_name, complete_var) + + try: + try: + with self.make_context(prog_name, args, **extra) as ctx: + rv = self.invoke(ctx) + if not standalone_mode: + return rv + # it's not safe to `ctx.exit(rv)` here! + # note that `rv` may actually contain data like "1" which + # has obvious effects + # more subtle case: `rv=[None, None]` can come out of + # chained commands which all returned `None` -- so it's not + # even always obvious that `rv` indicates success/failure + # by its truthiness/falsiness + ctx.exit() + except (EOFError, KeyboardInterrupt): + echo(file=sys.stderr) + raise Abort() + except ClickException as e: + if not standalone_mode: + raise + e.show() + sys.exit(e.exit_code) + except IOError as e: + if e.errno == errno.EPIPE: + sys.stdout = PacifyFlushWrapper(sys.stdout) + sys.stderr = PacifyFlushWrapper(sys.stderr) + sys.exit(1) + else: + raise + except Exit as e: + if standalone_mode: + sys.exit(e.exit_code) + else: + # in non-standalone mode, return the exit code + # note that this is only reached if `self.invoke` above raises + # an Exit explicitly -- thus bypassing the check there which + # would return its result + # the results of non-standalone execution may therefore be + # somewhat ambiguous: if there are codepaths which lead to + # `ctx.exit(1)` and to `return 1`, the caller won't be able to + # tell the difference between the two + return e.exit_code + except Abort: + if not standalone_mode: + raise + echo("Aborted!", file=sys.stderr) + sys.exit(1) + + def __call__(self, *args, **kwargs): + """Alias for :meth:`main`.""" + return self.main(*args, **kwargs) + + +class Command(BaseCommand): + """Commands are the basic building block of command line interfaces in + Click. A basic command handles command line parsing and might dispatch + more parsing to commands nested below it. + + .. versionchanged:: 2.0 + Added the `context_settings` parameter. + .. versionchanged:: 7.1 + Added the `no_args_is_help` parameter. + + :param name: the name of the command to use unless a group overrides it. + :param context_settings: an optional dictionary with defaults that are + passed to the context object. + :param callback: the callback to invoke. This is optional. + :param params: the parameters to register with this command. This can + be either :class:`Option` or :class:`Argument` objects. + :param help: the help string to use for this command. + :param epilog: like the help string but it's printed at the end of the + help page after everything else. + :param short_help: the short help to use for this command. This is + shown on the command listing of the parent command. + :param add_help_option: by default each command registers a ``--help`` + option. This can be disabled by this parameter. + :param no_args_is_help: this controls what happens if no arguments are + provided. This option is disabled by default. + If enabled this will add ``--help`` as argument + if no arguments are passed + :param hidden: hide this command from help outputs. + + :param deprecated: issues a message indicating that + the command is deprecated. + """ + + def __init__( + self, + name, + context_settings=None, + callback=None, + params=None, + help=None, + epilog=None, + short_help=None, + options_metavar="[OPTIONS]", + add_help_option=True, + no_args_is_help=False, + hidden=False, + deprecated=False, + ): + BaseCommand.__init__(self, name, context_settings) + #: the callback to execute when the command fires. This might be + #: `None` in which case nothing happens. + self.callback = callback + #: the list of parameters for this command in the order they + #: should show up in the help page and execute. Eager parameters + #: will automatically be handled before non eager ones. + self.params = params or [] + # if a form feed (page break) is found in the help text, truncate help + # text to the content preceding the first form feed + if help and "\f" in help: + help = help.split("\f", 1)[0] + self.help = help + self.epilog = epilog + self.options_metavar = options_metavar + self.short_help = short_help + self.add_help_option = add_help_option + self.no_args_is_help = no_args_is_help + self.hidden = hidden + self.deprecated = deprecated + + def get_usage(self, ctx): + """Formats the usage line into a string and returns it. + + Calls :meth:`format_usage` internally. + """ + formatter = ctx.make_formatter() + self.format_usage(ctx, formatter) + return formatter.getvalue().rstrip("\n") + + def get_params(self, ctx): + rv = self.params + help_option = self.get_help_option(ctx) + if help_option is not None: + rv = rv + [help_option] + return rv + + def format_usage(self, ctx, formatter): + """Writes the usage line into the formatter. + + This is a low-level method called by :meth:`get_usage`. + """ + pieces = self.collect_usage_pieces(ctx) + formatter.write_usage(ctx.command_path, " ".join(pieces)) + + def collect_usage_pieces(self, ctx): + """Returns all the pieces that go into the usage line and returns + it as a list of strings. + """ + rv = [self.options_metavar] + for param in self.get_params(ctx): + rv.extend(param.get_usage_pieces(ctx)) + return rv + + def get_help_option_names(self, ctx): + """Returns the names for the help option.""" + all_names = set(ctx.help_option_names) + for param in self.params: + all_names.difference_update(param.opts) + all_names.difference_update(param.secondary_opts) + return all_names + + def get_help_option(self, ctx): + """Returns the help option object.""" + help_options = self.get_help_option_names(ctx) + if not help_options or not self.add_help_option: + return + + def show_help(ctx, param, value): + if value and not ctx.resilient_parsing: + echo(ctx.get_help(), color=ctx.color) + ctx.exit() + + return Option( + help_options, + is_flag=True, + is_eager=True, + expose_value=False, + callback=show_help, + help="Show this message and exit.", + ) + + def make_parser(self, ctx): + """Creates the underlying option parser for this command.""" + parser = OptionParser(ctx) + for param in self.get_params(ctx): + param.add_to_parser(parser, ctx) + return parser + + def get_help(self, ctx): + """Formats the help into a string and returns it. + + Calls :meth:`format_help` internally. + """ + formatter = ctx.make_formatter() + self.format_help(ctx, formatter) + return formatter.getvalue().rstrip("\n") + + def get_short_help_str(self, limit=45): + """Gets short help for the command or makes it by shortening the + long help string. + """ + return ( + self.short_help + or self.help + and make_default_short_help(self.help, limit) + or "" + ) + + def format_help(self, ctx, formatter): + """Writes the help into the formatter if it exists. + + This is a low-level method called by :meth:`get_help`. + + This calls the following methods: + + - :meth:`format_usage` + - :meth:`format_help_text` + - :meth:`format_options` + - :meth:`format_epilog` + """ + self.format_usage(ctx, formatter) + self.format_help_text(ctx, formatter) + self.format_options(ctx, formatter) + self.format_epilog(ctx, formatter) + + def format_help_text(self, ctx, formatter): + """Writes the help text to the formatter if it exists.""" + if self.help: + formatter.write_paragraph() + with formatter.indentation(): + help_text = self.help + if self.deprecated: + help_text += DEPRECATED_HELP_NOTICE + formatter.write_text(help_text) + elif self.deprecated: + formatter.write_paragraph() + with formatter.indentation(): + formatter.write_text(DEPRECATED_HELP_NOTICE) + + def format_options(self, ctx, formatter): + """Writes all the options into the formatter if they exist.""" + opts = [] + for param in self.get_params(ctx): + rv = param.get_help_record(ctx) + if rv is not None: + opts.append(rv) + + if opts: + with formatter.section("Options"): + formatter.write_dl(opts) + + def format_epilog(self, ctx, formatter): + """Writes the epilog into the formatter if it exists.""" + if self.epilog: + formatter.write_paragraph() + with formatter.indentation(): + formatter.write_text(self.epilog) + + def parse_args(self, ctx, args): + if not args and self.no_args_is_help and not ctx.resilient_parsing: + echo(ctx.get_help(), color=ctx.color) + ctx.exit() + + parser = self.make_parser(ctx) + opts, args, param_order = parser.parse_args(args=args) + + for param in iter_params_for_processing(param_order, self.get_params(ctx)): + value, args = param.handle_parse_result(ctx, opts, args) + + if args and not ctx.allow_extra_args and not ctx.resilient_parsing: + ctx.fail( + "Got unexpected extra argument{} ({})".format( + "s" if len(args) != 1 else "", " ".join(map(make_str, args)) + ) + ) + + ctx.args = args + return args + + def invoke(self, ctx): + """Given a context, this invokes the attached callback (if it exists) + in the right way. + """ + _maybe_show_deprecated_notice(self) + if self.callback is not None: + return ctx.invoke(self.callback, **ctx.params) + + +class MultiCommand(Command): + """A multi command is the basic implementation of a command that + dispatches to subcommands. The most common version is the + :class:`Group`. + + :param invoke_without_command: this controls how the multi command itself + is invoked. By default it's only invoked + if a subcommand is provided. + :param no_args_is_help: this controls what happens if no arguments are + provided. This option is enabled by default if + `invoke_without_command` is disabled or disabled + if it's enabled. If enabled this will add + ``--help`` as argument if no arguments are + passed. + :param subcommand_metavar: the string that is used in the documentation + to indicate the subcommand place. + :param chain: if this is set to `True` chaining of multiple subcommands + is enabled. This restricts the form of commands in that + they cannot have optional arguments but it allows + multiple commands to be chained together. + :param result_callback: the result callback to attach to this multi + command. + """ + + allow_extra_args = True + allow_interspersed_args = False + + def __init__( + self, + name=None, + invoke_without_command=False, + no_args_is_help=None, + subcommand_metavar=None, + chain=False, + result_callback=None, + **attrs + ): + Command.__init__(self, name, **attrs) + if no_args_is_help is None: + no_args_is_help = not invoke_without_command + self.no_args_is_help = no_args_is_help + self.invoke_without_command = invoke_without_command + if subcommand_metavar is None: + if chain: + subcommand_metavar = SUBCOMMANDS_METAVAR + else: + subcommand_metavar = SUBCOMMAND_METAVAR + self.subcommand_metavar = subcommand_metavar + self.chain = chain + #: The result callback that is stored. This can be set or + #: overridden with the :func:`resultcallback` decorator. + self.result_callback = result_callback + + if self.chain: + for param in self.params: + if isinstance(param, Argument) and not param.required: + raise RuntimeError( + "Multi commands in chain mode cannot have" + " optional arguments." + ) + + def collect_usage_pieces(self, ctx): + rv = Command.collect_usage_pieces(self, ctx) + rv.append(self.subcommand_metavar) + return rv + + def format_options(self, ctx, formatter): + Command.format_options(self, ctx, formatter) + self.format_commands(ctx, formatter) + + def resultcallback(self, replace=False): + """Adds a result callback to the chain command. By default if a + result callback is already registered this will chain them but + this can be disabled with the `replace` parameter. The result + callback is invoked with the return value of the subcommand + (or the list of return values from all subcommands if chaining + is enabled) as well as the parameters as they would be passed + to the main callback. + + Example:: + + @click.group() + @click.option('-i', '--input', default=23) + def cli(input): + return 42 + + @cli.resultcallback() + def process_result(result, input): + return result + input + + .. versionadded:: 3.0 + + :param replace: if set to `True` an already existing result + callback will be removed. + """ + + def decorator(f): + old_callback = self.result_callback + if old_callback is None or replace: + self.result_callback = f + return f + + def function(__value, *args, **kwargs): + return f(old_callback(__value, *args, **kwargs), *args, **kwargs) + + self.result_callback = rv = update_wrapper(function, f) + return rv + + return decorator + + def format_commands(self, ctx, formatter): + """Extra format methods for multi methods that adds all the commands + after the options. + """ + commands = [] + for subcommand in self.list_commands(ctx): + cmd = self.get_command(ctx, subcommand) + # What is this, the tool lied about a command. Ignore it + if cmd is None: + continue + if cmd.hidden: + continue + + commands.append((subcommand, cmd)) + + # allow for 3 times the default spacing + if len(commands): + limit = formatter.width - 6 - max(len(cmd[0]) for cmd in commands) + + rows = [] + for subcommand, cmd in commands: + help = cmd.get_short_help_str(limit) + rows.append((subcommand, help)) + + if rows: + with formatter.section("Commands"): + formatter.write_dl(rows) + + def parse_args(self, ctx, args): + if not args and self.no_args_is_help and not ctx.resilient_parsing: + echo(ctx.get_help(), color=ctx.color) + ctx.exit() + + rest = Command.parse_args(self, ctx, args) + if self.chain: + ctx.protected_args = rest + ctx.args = [] + elif rest: + ctx.protected_args, ctx.args = rest[:1], rest[1:] + + return ctx.args + + def invoke(self, ctx): + def _process_result(value): + if self.result_callback is not None: + value = ctx.invoke(self.result_callback, value, **ctx.params) + return value + + if not ctx.protected_args: + # If we are invoked without command the chain flag controls + # how this happens. If we are not in chain mode, the return + # value here is the return value of the command. + # If however we are in chain mode, the return value is the + # return value of the result processor invoked with an empty + # list (which means that no subcommand actually was executed). + if self.invoke_without_command: + if not self.chain: + return Command.invoke(self, ctx) + with ctx: + Command.invoke(self, ctx) + return _process_result([]) + ctx.fail("Missing command.") + + # Fetch args back out + args = ctx.protected_args + ctx.args + ctx.args = [] + ctx.protected_args = [] + + # If we're not in chain mode, we only allow the invocation of a + # single command but we also inform the current context about the + # name of the command to invoke. + if not self.chain: + # Make sure the context is entered so we do not clean up + # resources until the result processor has worked. + with ctx: + cmd_name, cmd, args = self.resolve_command(ctx, args) + ctx.invoked_subcommand = cmd_name + Command.invoke(self, ctx) + sub_ctx = cmd.make_context(cmd_name, args, parent=ctx) + with sub_ctx: + return _process_result(sub_ctx.command.invoke(sub_ctx)) + + # In chain mode we create the contexts step by step, but after the + # base command has been invoked. Because at that point we do not + # know the subcommands yet, the invoked subcommand attribute is + # set to ``*`` to inform the command that subcommands are executed + # but nothing else. + with ctx: + ctx.invoked_subcommand = "*" if args else None + Command.invoke(self, ctx) + + # Otherwise we make every single context and invoke them in a + # chain. In that case the return value to the result processor + # is the list of all invoked subcommand's results. + contexts = [] + while args: + cmd_name, cmd, args = self.resolve_command(ctx, args) + sub_ctx = cmd.make_context( + cmd_name, + args, + parent=ctx, + allow_extra_args=True, + allow_interspersed_args=False, + ) + contexts.append(sub_ctx) + args, sub_ctx.args = sub_ctx.args, [] + + rv = [] + for sub_ctx in contexts: + with sub_ctx: + rv.append(sub_ctx.command.invoke(sub_ctx)) + return _process_result(rv) + + def resolve_command(self, ctx, args): + cmd_name = make_str(args[0]) + original_cmd_name = cmd_name + + # Get the command + cmd = self.get_command(ctx, cmd_name) + + # If we can't find the command but there is a normalization + # function available, we try with that one. + if cmd is None and ctx.token_normalize_func is not None: + cmd_name = ctx.token_normalize_func(cmd_name) + cmd = self.get_command(ctx, cmd_name) + + # If we don't find the command we want to show an error message + # to the user that it was not provided. However, there is + # something else we should do: if the first argument looks like + # an option we want to kick off parsing again for arguments to + # resolve things like --help which now should go to the main + # place. + if cmd is None and not ctx.resilient_parsing: + if split_opt(cmd_name)[0]: + self.parse_args(ctx, ctx.args) + ctx.fail("No such command '{}'.".format(original_cmd_name)) + + return cmd_name, cmd, args[1:] + + def get_command(self, ctx, cmd_name): + """Given a context and a command name, this returns a + :class:`Command` object if it exists or returns `None`. + """ + raise NotImplementedError() + + def list_commands(self, ctx): + """Returns a list of subcommand names in the order they should + appear. + """ + return [] + + +class Group(MultiCommand): + """A group allows a command to have subcommands attached. This is the + most common way to implement nesting in Click. + + :param commands: a dictionary of commands. + """ + + def __init__(self, name=None, commands=None, **attrs): + MultiCommand.__init__(self, name, **attrs) + #: the registered subcommands by their exported names. + self.commands = commands or {} + + def add_command(self, cmd, name=None): + """Registers another :class:`Command` with this group. If the name + is not provided, the name of the command is used. + """ + name = name or cmd.name + if name is None: + raise TypeError("Command has no name.") + _check_multicommand(self, name, cmd, register=True) + self.commands[name] = cmd + + def command(self, *args, **kwargs): + """A shortcut decorator for declaring and attaching a command to + the group. This takes the same arguments as :func:`command` but + immediately registers the created command with this instance by + calling into :meth:`add_command`. + """ + from .decorators import command + + def decorator(f): + cmd = command(*args, **kwargs)(f) + self.add_command(cmd) + return cmd + + return decorator + + def group(self, *args, **kwargs): + """A shortcut decorator for declaring and attaching a group to + the group. This takes the same arguments as :func:`group` but + immediately registers the created command with this instance by + calling into :meth:`add_command`. + """ + from .decorators import group + + def decorator(f): + cmd = group(*args, **kwargs)(f) + self.add_command(cmd) + return cmd + + return decorator + + def get_command(self, ctx, cmd_name): + return self.commands.get(cmd_name) + + def list_commands(self, ctx): + return sorted(self.commands) + + +class CommandCollection(MultiCommand): + """A command collection is a multi command that merges multiple multi + commands together into one. This is a straightforward implementation + that accepts a list of different multi commands as sources and + provides all the commands for each of them. + """ + + def __init__(self, name=None, sources=None, **attrs): + MultiCommand.__init__(self, name, **attrs) + #: The list of registered multi commands. + self.sources = sources or [] + + def add_source(self, multi_cmd): + """Adds a new multi command to the chain dispatcher.""" + self.sources.append(multi_cmd) + + def get_command(self, ctx, cmd_name): + for source in self.sources: + rv = source.get_command(ctx, cmd_name) + if rv is not None: + if self.chain: + _check_multicommand(self, cmd_name, rv) + return rv + + def list_commands(self, ctx): + rv = set() + for source in self.sources: + rv.update(source.list_commands(ctx)) + return sorted(rv) + + +class Parameter(object): + r"""A parameter to a command comes in two versions: they are either + :class:`Option`\s or :class:`Argument`\s. Other subclasses are currently + not supported by design as some of the internals for parsing are + intentionally not finalized. + + Some settings are supported by both options and arguments. + + :param param_decls: the parameter declarations for this option or + argument. This is a list of flags or argument + names. + :param type: the type that should be used. Either a :class:`ParamType` + or a Python type. The later is converted into the former + automatically if supported. + :param required: controls if this is optional or not. + :param default: the default value if omitted. This can also be a callable, + in which case it's invoked when the default is needed + without any arguments. + :param callback: a callback that should be executed after the parameter + was matched. This is called as ``fn(ctx, param, + value)`` and needs to return the value. + :param nargs: the number of arguments to match. If not ``1`` the return + value is a tuple instead of single value. The default for + nargs is ``1`` (except if the type is a tuple, then it's + the arity of the tuple). + :param metavar: how the value is represented in the help page. + :param expose_value: if this is `True` then the value is passed onwards + to the command callback and stored on the context, + otherwise it's skipped. + :param is_eager: eager values are processed before non eager ones. This + should not be set for arguments or it will inverse the + order of processing. + :param envvar: a string or list of strings that are environment variables + that should be checked. + + .. versionchanged:: 7.1 + Empty environment variables are ignored rather than taking the + empty string value. This makes it possible for scripts to clear + variables if they can't unset them. + + .. versionchanged:: 2.0 + Changed signature for parameter callback to also be passed the + parameter. The old callback format will still work, but it will + raise a warning to give you a chance to migrate the code easier. + """ + param_type_name = "parameter" + + def __init__( + self, + param_decls=None, + type=None, + required=False, + default=None, + callback=None, + nargs=None, + metavar=None, + expose_value=True, + is_eager=False, + envvar=None, + autocompletion=None, + ): + self.name, self.opts, self.secondary_opts = self._parse_decls( + param_decls or (), expose_value + ) + + self.type = convert_type(type, default) + + # Default nargs to what the type tells us if we have that + # information available. + if nargs is None: + if self.type.is_composite: + nargs = self.type.arity + else: + nargs = 1 + + self.required = required + self.callback = callback + self.nargs = nargs + self.multiple = False + self.expose_value = expose_value + self.default = default + self.is_eager = is_eager + self.metavar = metavar + self.envvar = envvar + self.autocompletion = autocompletion + + def __repr__(self): + return "<{} {}>".format(self.__class__.__name__, self.name) + + @property + def human_readable_name(self): + """Returns the human readable name of this parameter. This is the + same as the name for options, but the metavar for arguments. + """ + return self.name + + def make_metavar(self): + if self.metavar is not None: + return self.metavar + metavar = self.type.get_metavar(self) + if metavar is None: + metavar = self.type.name.upper() + if self.nargs != 1: + metavar += "..." + return metavar + + def get_default(self, ctx): + """Given a context variable this calculates the default value.""" + # Otherwise go with the regular default. + if callable(self.default): + rv = self.default() + else: + rv = self.default + return self.type_cast_value(ctx, rv) + + def add_to_parser(self, parser, ctx): + pass + + def consume_value(self, ctx, opts): + value = opts.get(self.name) + if value is None: + value = self.value_from_envvar(ctx) + if value is None: + value = ctx.lookup_default(self.name) + return value + + def type_cast_value(self, ctx, value): + """Given a value this runs it properly through the type system. + This automatically handles things like `nargs` and `multiple` as + well as composite types. + """ + if self.type.is_composite: + if self.nargs <= 1: + raise TypeError( + "Attempted to invoke composite type but nargs has" + " been set to {}. This is not supported; nargs" + " needs to be set to a fixed value > 1.".format(self.nargs) + ) + if self.multiple: + return tuple(self.type(x or (), self, ctx) for x in value or ()) + return self.type(value or (), self, ctx) + + def _convert(value, level): + if level == 0: + return self.type(value, self, ctx) + return tuple(_convert(x, level - 1) for x in value or ()) + + return _convert(value, (self.nargs != 1) + bool(self.multiple)) + + def process_value(self, ctx, value): + """Given a value and context this runs the logic to convert the + value as necessary. + """ + # If the value we were given is None we do nothing. This way + # code that calls this can easily figure out if something was + # not provided. Otherwise it would be converted into an empty + # tuple for multiple invocations which is inconvenient. + if value is not None: + return self.type_cast_value(ctx, value) + + def value_is_missing(self, value): + if value is None: + return True + if (self.nargs != 1 or self.multiple) and value == (): + return True + return False + + def full_process_value(self, ctx, value): + value = self.process_value(ctx, value) + + if value is None and not ctx.resilient_parsing: + value = self.get_default(ctx) + + if self.required and self.value_is_missing(value): + raise MissingParameter(ctx=ctx, param=self) + + return value + + def resolve_envvar_value(self, ctx): + if self.envvar is None: + return + if isinstance(self.envvar, (tuple, list)): + for envvar in self.envvar: + rv = os.environ.get(envvar) + if rv is not None: + return rv + else: + rv = os.environ.get(self.envvar) + + if rv != "": + return rv + + def value_from_envvar(self, ctx): + rv = self.resolve_envvar_value(ctx) + if rv is not None and self.nargs != 1: + rv = self.type.split_envvar_value(rv) + return rv + + def handle_parse_result(self, ctx, opts, args): + with augment_usage_errors(ctx, param=self): + value = self.consume_value(ctx, opts) + try: + value = self.full_process_value(ctx, value) + except Exception: + if not ctx.resilient_parsing: + raise + value = None + if self.callback is not None: + try: + value = invoke_param_callback(self.callback, ctx, self, value) + except Exception: + if not ctx.resilient_parsing: + raise + + if self.expose_value: + ctx.params[self.name] = value + return value, args + + def get_help_record(self, ctx): + pass + + def get_usage_pieces(self, ctx): + return [] + + def get_error_hint(self, ctx): + """Get a stringified version of the param for use in error messages to + indicate which param caused the error. + """ + hint_list = self.opts or [self.human_readable_name] + return " / ".join(repr(x) for x in hint_list) + + +class Option(Parameter): + """Options are usually optional values on the command line and + have some extra features that arguments don't have. + + All other parameters are passed onwards to the parameter constructor. + + :param show_default: controls if the default value should be shown on the + help page. Normally, defaults are not shown. If this + value is a string, it shows the string instead of the + value. This is particularly useful for dynamic options. + :param show_envvar: controls if an environment variable should be shown on + the help page. Normally, environment variables + are not shown. + :param prompt: if set to `True` or a non empty string then the user will be + prompted for input. If set to `True` the prompt will be the + option name capitalized. + :param confirmation_prompt: if set then the value will need to be confirmed + if it was prompted for. + :param hide_input: if this is `True` then the input on the prompt will be + hidden from the user. This is useful for password + input. + :param is_flag: forces this option to act as a flag. The default is + auto detection. + :param flag_value: which value should be used for this flag if it's + enabled. This is set to a boolean automatically if + the option string contains a slash to mark two options. + :param multiple: if this is set to `True` then the argument is accepted + multiple times and recorded. This is similar to ``nargs`` + in how it works but supports arbitrary number of + arguments. + :param count: this flag makes an option increment an integer. + :param allow_from_autoenv: if this is enabled then the value of this + parameter will be pulled from an environment + variable in case a prefix is defined on the + context. + :param help: the help string. + :param hidden: hide this option from help outputs. + """ + + param_type_name = "option" + + def __init__( + self, + param_decls=None, + show_default=False, + prompt=False, + confirmation_prompt=False, + hide_input=False, + is_flag=None, + flag_value=None, + multiple=False, + count=False, + allow_from_autoenv=True, + type=None, + help=None, + hidden=False, + show_choices=True, + show_envvar=False, + **attrs + ): + default_is_missing = attrs.get("default", _missing) is _missing + Parameter.__init__(self, param_decls, type=type, **attrs) + + if prompt is True: + prompt_text = self.name.replace("_", " ").capitalize() + elif prompt is False: + prompt_text = None + else: + prompt_text = prompt + self.prompt = prompt_text + self.confirmation_prompt = confirmation_prompt + self.hide_input = hide_input + self.hidden = hidden + + # Flags + if is_flag is None: + if flag_value is not None: + is_flag = True + else: + is_flag = bool(self.secondary_opts) + if is_flag and default_is_missing: + self.default = False + if flag_value is None: + flag_value = not self.default + self.is_flag = is_flag + self.flag_value = flag_value + if self.is_flag and isinstance(self.flag_value, bool) and type in [None, bool]: + self.type = BOOL + self.is_bool_flag = True + else: + self.is_bool_flag = False + + # Counting + self.count = count + if count: + if type is None: + self.type = IntRange(min=0) + if default_is_missing: + self.default = 0 + + self.multiple = multiple + self.allow_from_autoenv = allow_from_autoenv + self.help = help + self.show_default = show_default + self.show_choices = show_choices + self.show_envvar = show_envvar + + # Sanity check for stuff we don't support + if __debug__: + if self.nargs < 0: + raise TypeError("Options cannot have nargs < 0") + if self.prompt and self.is_flag and not self.is_bool_flag: + raise TypeError("Cannot prompt for flags that are not bools.") + if not self.is_bool_flag and self.secondary_opts: + raise TypeError("Got secondary option for non boolean flag.") + if self.is_bool_flag and self.hide_input and self.prompt is not None: + raise TypeError("Hidden input does not work with boolean flag prompts.") + if self.count: + if self.multiple: + raise TypeError( + "Options cannot be multiple and count at the same time." + ) + elif self.is_flag: + raise TypeError( + "Options cannot be count and flags at the same time." + ) + + def _parse_decls(self, decls, expose_value): + opts = [] + secondary_opts = [] + name = None + possible_names = [] + + for decl in decls: + if isidentifier(decl): + if name is not None: + raise TypeError("Name defined twice") + name = decl + else: + split_char = ";" if decl[:1] == "/" else "/" + if split_char in decl: + first, second = decl.split(split_char, 1) + first = first.rstrip() + if first: + possible_names.append(split_opt(first)) + opts.append(first) + second = second.lstrip() + if second: + secondary_opts.append(second.lstrip()) + else: + possible_names.append(split_opt(decl)) + opts.append(decl) + + if name is None and possible_names: + possible_names.sort(key=lambda x: -len(x[0])) # group long options first + name = possible_names[0][1].replace("-", "_").lower() + if not isidentifier(name): + name = None + + if name is None: + if not expose_value: + return None, opts, secondary_opts + raise TypeError("Could not determine name for option") + + if not opts and not secondary_opts: + raise TypeError( + "No options defined but a name was passed ({}). Did you" + " mean to declare an argument instead of an option?".format(name) + ) + + return name, opts, secondary_opts + + def add_to_parser(self, parser, ctx): + kwargs = { + "dest": self.name, + "nargs": self.nargs, + "obj": self, + } + + if self.multiple: + action = "append" + elif self.count: + action = "count" + else: + action = "store" + + if self.is_flag: + kwargs.pop("nargs", None) + action_const = "{}_const".format(action) + if self.is_bool_flag and self.secondary_opts: + parser.add_option(self.opts, action=action_const, const=True, **kwargs) + parser.add_option( + self.secondary_opts, action=action_const, const=False, **kwargs + ) + else: + parser.add_option( + self.opts, action=action_const, const=self.flag_value, **kwargs + ) + else: + kwargs["action"] = action + parser.add_option(self.opts, **kwargs) + + def get_help_record(self, ctx): + if self.hidden: + return + any_prefix_is_slash = [] + + def _write_opts(opts): + rv, any_slashes = join_options(opts) + if any_slashes: + any_prefix_is_slash[:] = [True] + if not self.is_flag and not self.count: + rv += " {}".format(self.make_metavar()) + return rv + + rv = [_write_opts(self.opts)] + if self.secondary_opts: + rv.append(_write_opts(self.secondary_opts)) + + help = self.help or "" + extra = [] + if self.show_envvar: + envvar = self.envvar + if envvar is None: + if self.allow_from_autoenv and ctx.auto_envvar_prefix is not None: + envvar = "{}_{}".format(ctx.auto_envvar_prefix, self.name.upper()) + if envvar is not None: + extra.append( + "env var: {}".format( + ", ".join(str(d) for d in envvar) + if isinstance(envvar, (list, tuple)) + else envvar + ) + ) + if self.default is not None and (self.show_default or ctx.show_default): + if isinstance(self.show_default, string_types): + default_string = "({})".format(self.show_default) + elif isinstance(self.default, (list, tuple)): + default_string = ", ".join(str(d) for d in self.default) + elif inspect.isfunction(self.default): + default_string = "(dynamic)" + else: + default_string = self.default + extra.append("default: {}".format(default_string)) + + if self.required: + extra.append("required") + if extra: + help = "{}[{}]".format( + "{} ".format(help) if help else "", "; ".join(extra) + ) + + return ("; " if any_prefix_is_slash else " / ").join(rv), help + + def get_default(self, ctx): + # If we're a non boolean flag our default is more complex because + # we need to look at all flags in the same group to figure out + # if we're the the default one in which case we return the flag + # value as default. + if self.is_flag and not self.is_bool_flag: + for param in ctx.command.params: + if param.name == self.name and param.default: + return param.flag_value + return None + return Parameter.get_default(self, ctx) + + def prompt_for_value(self, ctx): + """This is an alternative flow that can be activated in the full + value processing if a value does not exist. It will prompt the + user until a valid value exists and then returns the processed + value as result. + """ + # Calculate the default before prompting anything to be stable. + default = self.get_default(ctx) + + # If this is a prompt for a flag we need to handle this + # differently. + if self.is_bool_flag: + return confirm(self.prompt, default) + + return prompt( + self.prompt, + default=default, + type=self.type, + hide_input=self.hide_input, + show_choices=self.show_choices, + confirmation_prompt=self.confirmation_prompt, + value_proc=lambda x: self.process_value(ctx, x), + ) + + def resolve_envvar_value(self, ctx): + rv = Parameter.resolve_envvar_value(self, ctx) + if rv is not None: + return rv + if self.allow_from_autoenv and ctx.auto_envvar_prefix is not None: + envvar = "{}_{}".format(ctx.auto_envvar_prefix, self.name.upper()) + return os.environ.get(envvar) + + def value_from_envvar(self, ctx): + rv = self.resolve_envvar_value(ctx) + if rv is None: + return None + value_depth = (self.nargs != 1) + bool(self.multiple) + if value_depth > 0 and rv is not None: + rv = self.type.split_envvar_value(rv) + if self.multiple and self.nargs != 1: + rv = batch(rv, self.nargs) + return rv + + def full_process_value(self, ctx, value): + if value is None and self.prompt is not None and not ctx.resilient_parsing: + return self.prompt_for_value(ctx) + return Parameter.full_process_value(self, ctx, value) + + +class Argument(Parameter): + """Arguments are positional parameters to a command. They generally + provide fewer features than options but can have infinite ``nargs`` + and are required by default. + + All parameters are passed onwards to the parameter constructor. + """ + + param_type_name = "argument" + + def __init__(self, param_decls, required=None, **attrs): + if required is None: + if attrs.get("default") is not None: + required = False + else: + required = attrs.get("nargs", 1) > 0 + Parameter.__init__(self, param_decls, required=required, **attrs) + if self.default is not None and self.nargs < 0: + raise TypeError( + "nargs=-1 in combination with a default value is not supported." + ) + + @property + def human_readable_name(self): + if self.metavar is not None: + return self.metavar + return self.name.upper() + + def make_metavar(self): + if self.metavar is not None: + return self.metavar + var = self.type.get_metavar(self) + if not var: + var = self.name.upper() + if not self.required: + var = "[{}]".format(var) + if self.nargs != 1: + var += "..." + return var + + def _parse_decls(self, decls, expose_value): + if not decls: + if not expose_value: + return None, [], [] + raise TypeError("Could not determine name for argument") + if len(decls) == 1: + name = arg = decls[0] + name = name.replace("-", "_").lower() + else: + raise TypeError( + "Arguments take exactly one parameter declaration, got" + " {}".format(len(decls)) + ) + return name, [arg], [] + + def get_usage_pieces(self, ctx): + return [self.make_metavar()] + + def get_error_hint(self, ctx): + return repr(self.make_metavar()) + + def add_to_parser(self, parser, ctx): + parser.add_argument(dest=self.name, nargs=self.nargs, obj=self) diff --git a/matteo_env/Lib/site-packages/click/decorators.py b/matteo_env/Lib/site-packages/click/decorators.py new file mode 100644 index 0000000..c7b5af6 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/decorators.py @@ -0,0 +1,333 @@ +import inspect +import sys +from functools import update_wrapper + +from ._compat import iteritems +from ._unicodefun import _check_for_unicode_literals +from .core import Argument +from .core import Command +from .core import Group +from .core import Option +from .globals import get_current_context +from .utils import echo + + +def pass_context(f): + """Marks a callback as wanting to receive the current context + object as first argument. + """ + + def new_func(*args, **kwargs): + return f(get_current_context(), *args, **kwargs) + + return update_wrapper(new_func, f) + + +def pass_obj(f): + """Similar to :func:`pass_context`, but only pass the object on the + context onwards (:attr:`Context.obj`). This is useful if that object + represents the state of a nested system. + """ + + def new_func(*args, **kwargs): + return f(get_current_context().obj, *args, **kwargs) + + return update_wrapper(new_func, f) + + +def make_pass_decorator(object_type, ensure=False): + """Given an object type this creates a decorator that will work + similar to :func:`pass_obj` but instead of passing the object of the + current context, it will find the innermost context of type + :func:`object_type`. + + This generates a decorator that works roughly like this:: + + from functools import update_wrapper + + def decorator(f): + @pass_context + def new_func(ctx, *args, **kwargs): + obj = ctx.find_object(object_type) + return ctx.invoke(f, obj, *args, **kwargs) + return update_wrapper(new_func, f) + return decorator + + :param object_type: the type of the object to pass. + :param ensure: if set to `True`, a new object will be created and + remembered on the context if it's not there yet. + """ + + def decorator(f): + def new_func(*args, **kwargs): + ctx = get_current_context() + if ensure: + obj = ctx.ensure_object(object_type) + else: + obj = ctx.find_object(object_type) + if obj is None: + raise RuntimeError( + "Managed to invoke callback without a context" + " object of type '{}' existing".format(object_type.__name__) + ) + return ctx.invoke(f, obj, *args, **kwargs) + + return update_wrapper(new_func, f) + + return decorator + + +def _make_command(f, name, attrs, cls): + if isinstance(f, Command): + raise TypeError("Attempted to convert a callback into a command twice.") + try: + params = f.__click_params__ + params.reverse() + del f.__click_params__ + except AttributeError: + params = [] + help = attrs.get("help") + if help is None: + help = inspect.getdoc(f) + if isinstance(help, bytes): + help = help.decode("utf-8") + else: + help = inspect.cleandoc(help) + attrs["help"] = help + _check_for_unicode_literals() + return cls( + name=name or f.__name__.lower().replace("_", "-"), + callback=f, + params=params, + **attrs + ) + + +def command(name=None, cls=None, **attrs): + r"""Creates a new :class:`Command` and uses the decorated function as + callback. This will also automatically attach all decorated + :func:`option`\s and :func:`argument`\s as parameters to the command. + + The name of the command defaults to the name of the function with + underscores replaced by dashes. If you want to change that, you can + pass the intended name as the first argument. + + All keyword arguments are forwarded to the underlying command class. + + Once decorated the function turns into a :class:`Command` instance + that can be invoked as a command line utility or be attached to a + command :class:`Group`. + + :param name: the name of the command. This defaults to the function + name with underscores replaced by dashes. + :param cls: the command class to instantiate. This defaults to + :class:`Command`. + """ + if cls is None: + cls = Command + + def decorator(f): + cmd = _make_command(f, name, attrs, cls) + cmd.__doc__ = f.__doc__ + return cmd + + return decorator + + +def group(name=None, **attrs): + """Creates a new :class:`Group` with a function as callback. This + works otherwise the same as :func:`command` just that the `cls` + parameter is set to :class:`Group`. + """ + attrs.setdefault("cls", Group) + return command(name, **attrs) + + +def _param_memo(f, param): + if isinstance(f, Command): + f.params.append(param) + else: + if not hasattr(f, "__click_params__"): + f.__click_params__ = [] + f.__click_params__.append(param) + + +def argument(*param_decls, **attrs): + """Attaches an argument to the command. All positional arguments are + passed as parameter declarations to :class:`Argument`; all keyword + arguments are forwarded unchanged (except ``cls``). + This is equivalent to creating an :class:`Argument` instance manually + and attaching it to the :attr:`Command.params` list. + + :param cls: the argument class to instantiate. This defaults to + :class:`Argument`. + """ + + def decorator(f): + ArgumentClass = attrs.pop("cls", Argument) + _param_memo(f, ArgumentClass(param_decls, **attrs)) + return f + + return decorator + + +def option(*param_decls, **attrs): + """Attaches an option to the command. All positional arguments are + passed as parameter declarations to :class:`Option`; all keyword + arguments are forwarded unchanged (except ``cls``). + This is equivalent to creating an :class:`Option` instance manually + and attaching it to the :attr:`Command.params` list. + + :param cls: the option class to instantiate. This defaults to + :class:`Option`. + """ + + def decorator(f): + # Issue 926, copy attrs, so pre-defined options can re-use the same cls= + option_attrs = attrs.copy() + + if "help" in option_attrs: + option_attrs["help"] = inspect.cleandoc(option_attrs["help"]) + OptionClass = option_attrs.pop("cls", Option) + _param_memo(f, OptionClass(param_decls, **option_attrs)) + return f + + return decorator + + +def confirmation_option(*param_decls, **attrs): + """Shortcut for confirmation prompts that can be ignored by passing + ``--yes`` as parameter. + + This is equivalent to decorating a function with :func:`option` with + the following parameters:: + + def callback(ctx, param, value): + if not value: + ctx.abort() + + @click.command() + @click.option('--yes', is_flag=True, callback=callback, + expose_value=False, prompt='Do you want to continue?') + def dropdb(): + pass + """ + + def decorator(f): + def callback(ctx, param, value): + if not value: + ctx.abort() + + attrs.setdefault("is_flag", True) + attrs.setdefault("callback", callback) + attrs.setdefault("expose_value", False) + attrs.setdefault("prompt", "Do you want to continue?") + attrs.setdefault("help", "Confirm the action without prompting.") + return option(*(param_decls or ("--yes",)), **attrs)(f) + + return decorator + + +def password_option(*param_decls, **attrs): + """Shortcut for password prompts. + + This is equivalent to decorating a function with :func:`option` with + the following parameters:: + + @click.command() + @click.option('--password', prompt=True, confirmation_prompt=True, + hide_input=True) + def changeadmin(password): + pass + """ + + def decorator(f): + attrs.setdefault("prompt", True) + attrs.setdefault("confirmation_prompt", True) + attrs.setdefault("hide_input", True) + return option(*(param_decls or ("--password",)), **attrs)(f) + + return decorator + + +def version_option(version=None, *param_decls, **attrs): + """Adds a ``--version`` option which immediately ends the program + printing out the version number. This is implemented as an eager + option that prints the version and exits the program in the callback. + + :param version: the version number to show. If not provided Click + attempts an auto discovery via setuptools. + :param prog_name: the name of the program (defaults to autodetection) + :param message: custom message to show instead of the default + (``'%(prog)s, version %(version)s'``) + :param others: everything else is forwarded to :func:`option`. + """ + if version is None: + if hasattr(sys, "_getframe"): + module = sys._getframe(1).f_globals.get("__name__") + else: + module = "" + + def decorator(f): + prog_name = attrs.pop("prog_name", None) + message = attrs.pop("message", "%(prog)s, version %(version)s") + + def callback(ctx, param, value): + if not value or ctx.resilient_parsing: + return + prog = prog_name + if prog is None: + prog = ctx.find_root().info_name + ver = version + if ver is None: + try: + import pkg_resources + except ImportError: + pass + else: + for dist in pkg_resources.working_set: + scripts = dist.get_entry_map().get("console_scripts") or {} + for _, entry_point in iteritems(scripts): + if entry_point.module_name == module: + ver = dist.version + break + if ver is None: + raise RuntimeError("Could not determine version") + echo(message % {"prog": prog, "version": ver}, color=ctx.color) + ctx.exit() + + attrs.setdefault("is_flag", True) + attrs.setdefault("expose_value", False) + attrs.setdefault("is_eager", True) + attrs.setdefault("help", "Show the version and exit.") + attrs["callback"] = callback + return option(*(param_decls or ("--version",)), **attrs)(f) + + return decorator + + +def help_option(*param_decls, **attrs): + """Adds a ``--help`` option which immediately ends the program + printing out the help page. This is usually unnecessary to add as + this is added by default to all commands unless suppressed. + + Like :func:`version_option`, this is implemented as eager option that + prints in the callback and exits. + + All arguments are forwarded to :func:`option`. + """ + + def decorator(f): + def callback(ctx, param, value): + if value and not ctx.resilient_parsing: + echo(ctx.get_help(), color=ctx.color) + ctx.exit() + + attrs.setdefault("is_flag", True) + attrs.setdefault("expose_value", False) + attrs.setdefault("help", "Show this message and exit.") + attrs.setdefault("is_eager", True) + attrs["callback"] = callback + return option(*(param_decls or ("--help",)), **attrs)(f) + + return decorator diff --git a/matteo_env/Lib/site-packages/click/exceptions.py b/matteo_env/Lib/site-packages/click/exceptions.py new file mode 100644 index 0000000..592ee38 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/exceptions.py @@ -0,0 +1,253 @@ +from ._compat import filename_to_ui +from ._compat import get_text_stderr +from ._compat import PY2 +from .utils import echo + + +def _join_param_hints(param_hint): + if isinstance(param_hint, (tuple, list)): + return " / ".join(repr(x) for x in param_hint) + return param_hint + + +class ClickException(Exception): + """An exception that Click can handle and show to the user.""" + + #: The exit code for this exception + exit_code = 1 + + def __init__(self, message): + ctor_msg = message + if PY2: + if ctor_msg is not None: + ctor_msg = ctor_msg.encode("utf-8") + Exception.__init__(self, ctor_msg) + self.message = message + + def format_message(self): + return self.message + + def __str__(self): + return self.message + + if PY2: + __unicode__ = __str__ + + def __str__(self): + return self.message.encode("utf-8") + + def show(self, file=None): + if file is None: + file = get_text_stderr() + echo("Error: {}".format(self.format_message()), file=file) + + +class UsageError(ClickException): + """An internal exception that signals a usage error. This typically + aborts any further handling. + + :param message: the error message to display. + :param ctx: optionally the context that caused this error. Click will + fill in the context automatically in some situations. + """ + + exit_code = 2 + + def __init__(self, message, ctx=None): + ClickException.__init__(self, message) + self.ctx = ctx + self.cmd = self.ctx.command if self.ctx else None + + def show(self, file=None): + if file is None: + file = get_text_stderr() + color = None + hint = "" + if self.cmd is not None and self.cmd.get_help_option(self.ctx) is not None: + hint = "Try '{} {}' for help.\n".format( + self.ctx.command_path, self.ctx.help_option_names[0] + ) + if self.ctx is not None: + color = self.ctx.color + echo("{}\n{}".format(self.ctx.get_usage(), hint), file=file, color=color) + echo("Error: {}".format(self.format_message()), file=file, color=color) + + +class BadParameter(UsageError): + """An exception that formats out a standardized error message for a + bad parameter. This is useful when thrown from a callback or type as + Click will attach contextual information to it (for instance, which + parameter it is). + + .. versionadded:: 2.0 + + :param param: the parameter object that caused this error. This can + be left out, and Click will attach this info itself + if possible. + :param param_hint: a string that shows up as parameter name. This + can be used as alternative to `param` in cases + where custom validation should happen. If it is + a string it's used as such, if it's a list then + each item is quoted and separated. + """ + + def __init__(self, message, ctx=None, param=None, param_hint=None): + UsageError.__init__(self, message, ctx) + self.param = param + self.param_hint = param_hint + + def format_message(self): + if self.param_hint is not None: + param_hint = self.param_hint + elif self.param is not None: + param_hint = self.param.get_error_hint(self.ctx) + else: + return "Invalid value: {}".format(self.message) + param_hint = _join_param_hints(param_hint) + + return "Invalid value for {}: {}".format(param_hint, self.message) + + +class MissingParameter(BadParameter): + """Raised if click required an option or argument but it was not + provided when invoking the script. + + .. versionadded:: 4.0 + + :param param_type: a string that indicates the type of the parameter. + The default is to inherit the parameter type from + the given `param`. Valid values are ``'parameter'``, + ``'option'`` or ``'argument'``. + """ + + def __init__( + self, message=None, ctx=None, param=None, param_hint=None, param_type=None + ): + BadParameter.__init__(self, message, ctx, param, param_hint) + self.param_type = param_type + + def format_message(self): + if self.param_hint is not None: + param_hint = self.param_hint + elif self.param is not None: + param_hint = self.param.get_error_hint(self.ctx) + else: + param_hint = None + param_hint = _join_param_hints(param_hint) + + param_type = self.param_type + if param_type is None and self.param is not None: + param_type = self.param.param_type_name + + msg = self.message + if self.param is not None: + msg_extra = self.param.type.get_missing_message(self.param) + if msg_extra: + if msg: + msg += ". {}".format(msg_extra) + else: + msg = msg_extra + + return "Missing {}{}{}{}".format( + param_type, + " {}".format(param_hint) if param_hint else "", + ". " if msg else ".", + msg or "", + ) + + def __str__(self): + if self.message is None: + param_name = self.param.name if self.param else None + return "missing parameter: {}".format(param_name) + else: + return self.message + + if PY2: + __unicode__ = __str__ + + def __str__(self): + return self.__unicode__().encode("utf-8") + + +class NoSuchOption(UsageError): + """Raised if click attempted to handle an option that does not + exist. + + .. versionadded:: 4.0 + """ + + def __init__(self, option_name, message=None, possibilities=None, ctx=None): + if message is None: + message = "no such option: {}".format(option_name) + UsageError.__init__(self, message, ctx) + self.option_name = option_name + self.possibilities = possibilities + + def format_message(self): + bits = [self.message] + if self.possibilities: + if len(self.possibilities) == 1: + bits.append("Did you mean {}?".format(self.possibilities[0])) + else: + possibilities = sorted(self.possibilities) + bits.append("(Possible options: {})".format(", ".join(possibilities))) + return " ".join(bits) + + +class BadOptionUsage(UsageError): + """Raised if an option is generally supplied but the use of the option + was incorrect. This is for instance raised if the number of arguments + for an option is not correct. + + .. versionadded:: 4.0 + + :param option_name: the name of the option being used incorrectly. + """ + + def __init__(self, option_name, message, ctx=None): + UsageError.__init__(self, message, ctx) + self.option_name = option_name + + +class BadArgumentUsage(UsageError): + """Raised if an argument is generally supplied but the use of the argument + was incorrect. This is for instance raised if the number of values + for an argument is not correct. + + .. versionadded:: 6.0 + """ + + def __init__(self, message, ctx=None): + UsageError.__init__(self, message, ctx) + + +class FileError(ClickException): + """Raised if a file cannot be opened.""" + + def __init__(self, filename, hint=None): + ui_filename = filename_to_ui(filename) + if hint is None: + hint = "unknown error" + ClickException.__init__(self, hint) + self.ui_filename = ui_filename + self.filename = filename + + def format_message(self): + return "Could not open file {}: {}".format(self.ui_filename, self.message) + + +class Abort(RuntimeError): + """An internal signalling exception that signals Click to abort.""" + + +class Exit(RuntimeError): + """An exception that indicates that the application should exit with some + status code. + + :param code: the status code to exit with. + """ + + __slots__ = ("exit_code",) + + def __init__(self, code=0): + self.exit_code = code diff --git a/matteo_env/Lib/site-packages/click/formatting.py b/matteo_env/Lib/site-packages/click/formatting.py new file mode 100644 index 0000000..319c7f6 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/formatting.py @@ -0,0 +1,283 @@ +from contextlib import contextmanager + +from ._compat import term_len +from .parser import split_opt +from .termui import get_terminal_size + +# Can force a width. This is used by the test system +FORCED_WIDTH = None + + +def measure_table(rows): + widths = {} + for row in rows: + for idx, col in enumerate(row): + widths[idx] = max(widths.get(idx, 0), term_len(col)) + return tuple(y for x, y in sorted(widths.items())) + + +def iter_rows(rows, col_count): + for row in rows: + row = tuple(row) + yield row + ("",) * (col_count - len(row)) + + +def wrap_text( + text, width=78, initial_indent="", subsequent_indent="", preserve_paragraphs=False +): + """A helper function that intelligently wraps text. By default, it + assumes that it operates on a single paragraph of text but if the + `preserve_paragraphs` parameter is provided it will intelligently + handle paragraphs (defined by two empty lines). + + If paragraphs are handled, a paragraph can be prefixed with an empty + line containing the ``\\b`` character (``\\x08``) to indicate that + no rewrapping should happen in that block. + + :param text: the text that should be rewrapped. + :param width: the maximum width for the text. + :param initial_indent: the initial indent that should be placed on the + first line as a string. + :param subsequent_indent: the indent string that should be placed on + each consecutive line. + :param preserve_paragraphs: if this flag is set then the wrapping will + intelligently handle paragraphs. + """ + from ._textwrap import TextWrapper + + text = text.expandtabs() + wrapper = TextWrapper( + width, + initial_indent=initial_indent, + subsequent_indent=subsequent_indent, + replace_whitespace=False, + ) + if not preserve_paragraphs: + return wrapper.fill(text) + + p = [] + buf = [] + indent = None + + def _flush_par(): + if not buf: + return + if buf[0].strip() == "\b": + p.append((indent or 0, True, "\n".join(buf[1:]))) + else: + p.append((indent or 0, False, " ".join(buf))) + del buf[:] + + for line in text.splitlines(): + if not line: + _flush_par() + indent = None + else: + if indent is None: + orig_len = term_len(line) + line = line.lstrip() + indent = orig_len - term_len(line) + buf.append(line) + _flush_par() + + rv = [] + for indent, raw, text in p: + with wrapper.extra_indent(" " * indent): + if raw: + rv.append(wrapper.indent_only(text)) + else: + rv.append(wrapper.fill(text)) + + return "\n\n".join(rv) + + +class HelpFormatter(object): + """This class helps with formatting text-based help pages. It's + usually just needed for very special internal cases, but it's also + exposed so that developers can write their own fancy outputs. + + At present, it always writes into memory. + + :param indent_increment: the additional increment for each level. + :param width: the width for the text. This defaults to the terminal + width clamped to a maximum of 78. + """ + + def __init__(self, indent_increment=2, width=None, max_width=None): + self.indent_increment = indent_increment + if max_width is None: + max_width = 80 + if width is None: + width = FORCED_WIDTH + if width is None: + width = max(min(get_terminal_size()[0], max_width) - 2, 50) + self.width = width + self.current_indent = 0 + self.buffer = [] + + def write(self, string): + """Writes a unicode string into the internal buffer.""" + self.buffer.append(string) + + def indent(self): + """Increases the indentation.""" + self.current_indent += self.indent_increment + + def dedent(self): + """Decreases the indentation.""" + self.current_indent -= self.indent_increment + + def write_usage(self, prog, args="", prefix="Usage: "): + """Writes a usage line into the buffer. + + :param prog: the program name. + :param args: whitespace separated list of arguments. + :param prefix: the prefix for the first line. + """ + usage_prefix = "{:>{w}}{} ".format(prefix, prog, w=self.current_indent) + text_width = self.width - self.current_indent + + if text_width >= (term_len(usage_prefix) + 20): + # The arguments will fit to the right of the prefix. + indent = " " * term_len(usage_prefix) + self.write( + wrap_text( + args, + text_width, + initial_indent=usage_prefix, + subsequent_indent=indent, + ) + ) + else: + # The prefix is too long, put the arguments on the next line. + self.write(usage_prefix) + self.write("\n") + indent = " " * (max(self.current_indent, term_len(prefix)) + 4) + self.write( + wrap_text( + args, text_width, initial_indent=indent, subsequent_indent=indent + ) + ) + + self.write("\n") + + def write_heading(self, heading): + """Writes a heading into the buffer.""" + self.write("{:>{w}}{}:\n".format("", heading, w=self.current_indent)) + + def write_paragraph(self): + """Writes a paragraph into the buffer.""" + if self.buffer: + self.write("\n") + + def write_text(self, text): + """Writes re-indented text into the buffer. This rewraps and + preserves paragraphs. + """ + text_width = max(self.width - self.current_indent, 11) + indent = " " * self.current_indent + self.write( + wrap_text( + text, + text_width, + initial_indent=indent, + subsequent_indent=indent, + preserve_paragraphs=True, + ) + ) + self.write("\n") + + def write_dl(self, rows, col_max=30, col_spacing=2): + """Writes a definition list into the buffer. This is how options + and commands are usually formatted. + + :param rows: a list of two item tuples for the terms and values. + :param col_max: the maximum width of the first column. + :param col_spacing: the number of spaces between the first and + second column. + """ + rows = list(rows) + widths = measure_table(rows) + if len(widths) != 2: + raise TypeError("Expected two columns for definition list") + + first_col = min(widths[0], col_max) + col_spacing + + for first, second in iter_rows(rows, len(widths)): + self.write("{:>{w}}{}".format("", first, w=self.current_indent)) + if not second: + self.write("\n") + continue + if term_len(first) <= first_col - col_spacing: + self.write(" " * (first_col - term_len(first))) + else: + self.write("\n") + self.write(" " * (first_col + self.current_indent)) + + text_width = max(self.width - first_col - 2, 10) + wrapped_text = wrap_text(second, text_width, preserve_paragraphs=True) + lines = wrapped_text.splitlines() + + if lines: + self.write("{}\n".format(lines[0])) + + for line in lines[1:]: + self.write( + "{:>{w}}{}\n".format( + "", line, w=first_col + self.current_indent + ) + ) + + if len(lines) > 1: + # separate long help from next option + self.write("\n") + else: + self.write("\n") + + @contextmanager + def section(self, name): + """Helpful context manager that writes a paragraph, a heading, + and the indents. + + :param name: the section name that is written as heading. + """ + self.write_paragraph() + self.write_heading(name) + self.indent() + try: + yield + finally: + self.dedent() + + @contextmanager + def indentation(self): + """A context manager that increases the indentation.""" + self.indent() + try: + yield + finally: + self.dedent() + + def getvalue(self): + """Returns the buffer contents.""" + return "".join(self.buffer) + + +def join_options(options): + """Given a list of option strings this joins them in the most appropriate + way and returns them in the form ``(formatted_string, + any_prefix_is_slash)`` where the second item in the tuple is a flag that + indicates if any of the option prefixes was a slash. + """ + rv = [] + any_prefix_is_slash = False + for opt in options: + prefix = split_opt(opt)[0] + if prefix == "/": + any_prefix_is_slash = True + rv.append((len(prefix), opt)) + + rv.sort(key=lambda x: x[0]) + + rv = ", ".join(x[1] for x in rv) + return rv, any_prefix_is_slash diff --git a/matteo_env/Lib/site-packages/click/globals.py b/matteo_env/Lib/site-packages/click/globals.py new file mode 100644 index 0000000..1649f9a --- /dev/null +++ b/matteo_env/Lib/site-packages/click/globals.py @@ -0,0 +1,47 @@ +from threading import local + +_local = local() + + +def get_current_context(silent=False): + """Returns the current click context. This can be used as a way to + access the current context object from anywhere. This is a more implicit + alternative to the :func:`pass_context` decorator. This function is + primarily useful for helpers such as :func:`echo` which might be + interested in changing its behavior based on the current context. + + To push the current context, :meth:`Context.scope` can be used. + + .. versionadded:: 5.0 + + :param silent: if set to `True` the return value is `None` if no context + is available. The default behavior is to raise a + :exc:`RuntimeError`. + """ + try: + return _local.stack[-1] + except (AttributeError, IndexError): + if not silent: + raise RuntimeError("There is no active click context.") + + +def push_context(ctx): + """Pushes a new context to the current stack.""" + _local.__dict__.setdefault("stack", []).append(ctx) + + +def pop_context(): + """Removes the top level from the stack.""" + _local.stack.pop() + + +def resolve_color_default(color=None): + """"Internal helper to get the default value of the color flag. If a + value is passed it's returned unchanged, otherwise it's looked up from + the current context. + """ + if color is not None: + return color + ctx = get_current_context(silent=True) + if ctx is not None: + return ctx.color diff --git a/matteo_env/Lib/site-packages/click/parser.py b/matteo_env/Lib/site-packages/click/parser.py new file mode 100644 index 0000000..f43ebfe --- /dev/null +++ b/matteo_env/Lib/site-packages/click/parser.py @@ -0,0 +1,428 @@ +# -*- coding: utf-8 -*- +""" +This module started out as largely a copy paste from the stdlib's +optparse module with the features removed that we do not need from +optparse because we implement them in Click on a higher level (for +instance type handling, help formatting and a lot more). + +The plan is to remove more and more from here over time. + +The reason this is a different module and not optparse from the stdlib +is that there are differences in 2.x and 3.x about the error messages +generated and optparse in the stdlib uses gettext for no good reason +and might cause us issues. + +Click uses parts of optparse written by Gregory P. Ward and maintained +by the Python Software Foundation. This is limited to code in parser.py. + +Copyright 2001-2006 Gregory P. Ward. All rights reserved. +Copyright 2002-2006 Python Software Foundation. All rights reserved. +""" +import re +from collections import deque + +from .exceptions import BadArgumentUsage +from .exceptions import BadOptionUsage +from .exceptions import NoSuchOption +from .exceptions import UsageError + + +def _unpack_args(args, nargs_spec): + """Given an iterable of arguments and an iterable of nargs specifications, + it returns a tuple with all the unpacked arguments at the first index + and all remaining arguments as the second. + + The nargs specification is the number of arguments that should be consumed + or `-1` to indicate that this position should eat up all the remainders. + + Missing items are filled with `None`. + """ + args = deque(args) + nargs_spec = deque(nargs_spec) + rv = [] + spos = None + + def _fetch(c): + try: + if spos is None: + return c.popleft() + else: + return c.pop() + except IndexError: + return None + + while nargs_spec: + nargs = _fetch(nargs_spec) + if nargs == 1: + rv.append(_fetch(args)) + elif nargs > 1: + x = [_fetch(args) for _ in range(nargs)] + # If we're reversed, we're pulling in the arguments in reverse, + # so we need to turn them around. + if spos is not None: + x.reverse() + rv.append(tuple(x)) + elif nargs < 0: + if spos is not None: + raise TypeError("Cannot have two nargs < 0") + spos = len(rv) + rv.append(None) + + # spos is the position of the wildcard (star). If it's not `None`, + # we fill it with the remainder. + if spos is not None: + rv[spos] = tuple(args) + args = [] + rv[spos + 1 :] = reversed(rv[spos + 1 :]) + + return tuple(rv), list(args) + + +def _error_opt_args(nargs, opt): + if nargs == 1: + raise BadOptionUsage(opt, "{} option requires an argument".format(opt)) + raise BadOptionUsage(opt, "{} option requires {} arguments".format(opt, nargs)) + + +def split_opt(opt): + first = opt[:1] + if first.isalnum(): + return "", opt + if opt[1:2] == first: + return opt[:2], opt[2:] + return first, opt[1:] + + +def normalize_opt(opt, ctx): + if ctx is None or ctx.token_normalize_func is None: + return opt + prefix, opt = split_opt(opt) + return prefix + ctx.token_normalize_func(opt) + + +def split_arg_string(string): + """Given an argument string this attempts to split it into small parts.""" + rv = [] + for match in re.finditer( + r"('([^'\\]*(?:\\.[^'\\]*)*)'|\"([^\"\\]*(?:\\.[^\"\\]*)*)\"|\S+)\s*", + string, + re.S, + ): + arg = match.group().strip() + if arg[:1] == arg[-1:] and arg[:1] in "\"'": + arg = arg[1:-1].encode("ascii", "backslashreplace").decode("unicode-escape") + try: + arg = type(string)(arg) + except UnicodeError: + pass + rv.append(arg) + return rv + + +class Option(object): + def __init__(self, opts, dest, action=None, nargs=1, const=None, obj=None): + self._short_opts = [] + self._long_opts = [] + self.prefixes = set() + + for opt in opts: + prefix, value = split_opt(opt) + if not prefix: + raise ValueError("Invalid start character for option ({})".format(opt)) + self.prefixes.add(prefix[0]) + if len(prefix) == 1 and len(value) == 1: + self._short_opts.append(opt) + else: + self._long_opts.append(opt) + self.prefixes.add(prefix) + + if action is None: + action = "store" + + self.dest = dest + self.action = action + self.nargs = nargs + self.const = const + self.obj = obj + + @property + def takes_value(self): + return self.action in ("store", "append") + + def process(self, value, state): + if self.action == "store": + state.opts[self.dest] = value + elif self.action == "store_const": + state.opts[self.dest] = self.const + elif self.action == "append": + state.opts.setdefault(self.dest, []).append(value) + elif self.action == "append_const": + state.opts.setdefault(self.dest, []).append(self.const) + elif self.action == "count": + state.opts[self.dest] = state.opts.get(self.dest, 0) + 1 + else: + raise ValueError("unknown action '{}'".format(self.action)) + state.order.append(self.obj) + + +class Argument(object): + def __init__(self, dest, nargs=1, obj=None): + self.dest = dest + self.nargs = nargs + self.obj = obj + + def process(self, value, state): + if self.nargs > 1: + holes = sum(1 for x in value if x is None) + if holes == len(value): + value = None + elif holes != 0: + raise BadArgumentUsage( + "argument {} takes {} values".format(self.dest, self.nargs) + ) + state.opts[self.dest] = value + state.order.append(self.obj) + + +class ParsingState(object): + def __init__(self, rargs): + self.opts = {} + self.largs = [] + self.rargs = rargs + self.order = [] + + +class OptionParser(object): + """The option parser is an internal class that is ultimately used to + parse options and arguments. It's modelled after optparse and brings + a similar but vastly simplified API. It should generally not be used + directly as the high level Click classes wrap it for you. + + It's not nearly as extensible as optparse or argparse as it does not + implement features that are implemented on a higher level (such as + types or defaults). + + :param ctx: optionally the :class:`~click.Context` where this parser + should go with. + """ + + def __init__(self, ctx=None): + #: The :class:`~click.Context` for this parser. This might be + #: `None` for some advanced use cases. + self.ctx = ctx + #: This controls how the parser deals with interspersed arguments. + #: If this is set to `False`, the parser will stop on the first + #: non-option. Click uses this to implement nested subcommands + #: safely. + self.allow_interspersed_args = True + #: This tells the parser how to deal with unknown options. By + #: default it will error out (which is sensible), but there is a + #: second mode where it will ignore it and continue processing + #: after shifting all the unknown options into the resulting args. + self.ignore_unknown_options = False + if ctx is not None: + self.allow_interspersed_args = ctx.allow_interspersed_args + self.ignore_unknown_options = ctx.ignore_unknown_options + self._short_opt = {} + self._long_opt = {} + self._opt_prefixes = {"-", "--"} + self._args = [] + + def add_option(self, opts, dest, action=None, nargs=1, const=None, obj=None): + """Adds a new option named `dest` to the parser. The destination + is not inferred (unlike with optparse) and needs to be explicitly + provided. Action can be any of ``store``, ``store_const``, + ``append``, ``appnd_const`` or ``count``. + + The `obj` can be used to identify the option in the order list + that is returned from the parser. + """ + if obj is None: + obj = dest + opts = [normalize_opt(opt, self.ctx) for opt in opts] + option = Option(opts, dest, action=action, nargs=nargs, const=const, obj=obj) + self._opt_prefixes.update(option.prefixes) + for opt in option._short_opts: + self._short_opt[opt] = option + for opt in option._long_opts: + self._long_opt[opt] = option + + def add_argument(self, dest, nargs=1, obj=None): + """Adds a positional argument named `dest` to the parser. + + The `obj` can be used to identify the option in the order list + that is returned from the parser. + """ + if obj is None: + obj = dest + self._args.append(Argument(dest=dest, nargs=nargs, obj=obj)) + + def parse_args(self, args): + """Parses positional arguments and returns ``(values, args, order)`` + for the parsed options and arguments as well as the leftover + arguments if there are any. The order is a list of objects as they + appear on the command line. If arguments appear multiple times they + will be memorized multiple times as well. + """ + state = ParsingState(args) + try: + self._process_args_for_options(state) + self._process_args_for_args(state) + except UsageError: + if self.ctx is None or not self.ctx.resilient_parsing: + raise + return state.opts, state.largs, state.order + + def _process_args_for_args(self, state): + pargs, args = _unpack_args( + state.largs + state.rargs, [x.nargs for x in self._args] + ) + + for idx, arg in enumerate(self._args): + arg.process(pargs[idx], state) + + state.largs = args + state.rargs = [] + + def _process_args_for_options(self, state): + while state.rargs: + arg = state.rargs.pop(0) + arglen = len(arg) + # Double dashes always handled explicitly regardless of what + # prefixes are valid. + if arg == "--": + return + elif arg[:1] in self._opt_prefixes and arglen > 1: + self._process_opts(arg, state) + elif self.allow_interspersed_args: + state.largs.append(arg) + else: + state.rargs.insert(0, arg) + return + + # Say this is the original argument list: + # [arg0, arg1, ..., arg(i-1), arg(i), arg(i+1), ..., arg(N-1)] + # ^ + # (we are about to process arg(i)). + # + # Then rargs is [arg(i), ..., arg(N-1)] and largs is a *subset* of + # [arg0, ..., arg(i-1)] (any options and their arguments will have + # been removed from largs). + # + # The while loop will usually consume 1 or more arguments per pass. + # If it consumes 1 (eg. arg is an option that takes no arguments), + # then after _process_arg() is done the situation is: + # + # largs = subset of [arg0, ..., arg(i)] + # rargs = [arg(i+1), ..., arg(N-1)] + # + # If allow_interspersed_args is false, largs will always be + # *empty* -- still a subset of [arg0, ..., arg(i-1)], but + # not a very interesting subset! + + def _match_long_opt(self, opt, explicit_value, state): + if opt not in self._long_opt: + possibilities = [word for word in self._long_opt if word.startswith(opt)] + raise NoSuchOption(opt, possibilities=possibilities, ctx=self.ctx) + + option = self._long_opt[opt] + if option.takes_value: + # At this point it's safe to modify rargs by injecting the + # explicit value, because no exception is raised in this + # branch. This means that the inserted value will be fully + # consumed. + if explicit_value is not None: + state.rargs.insert(0, explicit_value) + + nargs = option.nargs + if len(state.rargs) < nargs: + _error_opt_args(nargs, opt) + elif nargs == 1: + value = state.rargs.pop(0) + else: + value = tuple(state.rargs[:nargs]) + del state.rargs[:nargs] + + elif explicit_value is not None: + raise BadOptionUsage(opt, "{} option does not take a value".format(opt)) + + else: + value = None + + option.process(value, state) + + def _match_short_opt(self, arg, state): + stop = False + i = 1 + prefix = arg[0] + unknown_options = [] + + for ch in arg[1:]: + opt = normalize_opt(prefix + ch, self.ctx) + option = self._short_opt.get(opt) + i += 1 + + if not option: + if self.ignore_unknown_options: + unknown_options.append(ch) + continue + raise NoSuchOption(opt, ctx=self.ctx) + if option.takes_value: + # Any characters left in arg? Pretend they're the + # next arg, and stop consuming characters of arg. + if i < len(arg): + state.rargs.insert(0, arg[i:]) + stop = True + + nargs = option.nargs + if len(state.rargs) < nargs: + _error_opt_args(nargs, opt) + elif nargs == 1: + value = state.rargs.pop(0) + else: + value = tuple(state.rargs[:nargs]) + del state.rargs[:nargs] + + else: + value = None + + option.process(value, state) + + if stop: + break + + # If we got any unknown options we re-combinate the string of the + # remaining options and re-attach the prefix, then report that + # to the state as new larg. This way there is basic combinatorics + # that can be achieved while still ignoring unknown arguments. + if self.ignore_unknown_options and unknown_options: + state.largs.append("{}{}".format(prefix, "".join(unknown_options))) + + def _process_opts(self, arg, state): + explicit_value = None + # Long option handling happens in two parts. The first part is + # supporting explicitly attached values. In any case, we will try + # to long match the option first. + if "=" in arg: + long_opt, explicit_value = arg.split("=", 1) + else: + long_opt = arg + norm_long_opt = normalize_opt(long_opt, self.ctx) + + # At this point we will match the (assumed) long option through + # the long option matching code. Note that this allows options + # like "-foo" to be matched as long options. + try: + self._match_long_opt(norm_long_opt, explicit_value, state) + except NoSuchOption: + # At this point the long option matching failed, and we need + # to try with short options. However there is a special rule + # which says, that if we have a two character options prefix + # (applies to "--foo" for instance), we do not dispatch to the + # short option code and will instead raise the no option + # error. + if arg[:2] not in self._opt_prefixes: + return self._match_short_opt(arg, state) + if not self.ignore_unknown_options: + raise + state.largs.append(arg) diff --git a/matteo_env/Lib/site-packages/click/termui.py b/matteo_env/Lib/site-packages/click/termui.py new file mode 100644 index 0000000..02ef9e9 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/termui.py @@ -0,0 +1,681 @@ +import inspect +import io +import itertools +import os +import struct +import sys + +from ._compat import DEFAULT_COLUMNS +from ._compat import get_winterm_size +from ._compat import isatty +from ._compat import raw_input +from ._compat import string_types +from ._compat import strip_ansi +from ._compat import text_type +from ._compat import WIN +from .exceptions import Abort +from .exceptions import UsageError +from .globals import resolve_color_default +from .types import Choice +from .types import convert_type +from .types import Path +from .utils import echo +from .utils import LazyFile + +# The prompt functions to use. The doc tools currently override these +# functions to customize how they work. +visible_prompt_func = raw_input + +_ansi_colors = { + "black": 30, + "red": 31, + "green": 32, + "yellow": 33, + "blue": 34, + "magenta": 35, + "cyan": 36, + "white": 37, + "reset": 39, + "bright_black": 90, + "bright_red": 91, + "bright_green": 92, + "bright_yellow": 93, + "bright_blue": 94, + "bright_magenta": 95, + "bright_cyan": 96, + "bright_white": 97, +} +_ansi_reset_all = "\033[0m" + + +def hidden_prompt_func(prompt): + import getpass + + return getpass.getpass(prompt) + + +def _build_prompt( + text, suffix, show_default=False, default=None, show_choices=True, type=None +): + prompt = text + if type is not None and show_choices and isinstance(type, Choice): + prompt += " ({})".format(", ".join(map(str, type.choices))) + if default is not None and show_default: + prompt = "{} [{}]".format(prompt, _format_default(default)) + return prompt + suffix + + +def _format_default(default): + if isinstance(default, (io.IOBase, LazyFile)) and hasattr(default, "name"): + return default.name + + return default + + +def prompt( + text, + default=None, + hide_input=False, + confirmation_prompt=False, + type=None, + value_proc=None, + prompt_suffix=": ", + show_default=True, + err=False, + show_choices=True, +): + """Prompts a user for input. This is a convenience function that can + be used to prompt a user for input later. + + If the user aborts the input by sending a interrupt signal, this + function will catch it and raise a :exc:`Abort` exception. + + .. versionadded:: 7.0 + Added the show_choices parameter. + + .. versionadded:: 6.0 + Added unicode support for cmd.exe on Windows. + + .. versionadded:: 4.0 + Added the `err` parameter. + + :param text: the text to show for the prompt. + :param default: the default value to use if no input happens. If this + is not given it will prompt until it's aborted. + :param hide_input: if this is set to true then the input value will + be hidden. + :param confirmation_prompt: asks for confirmation for the value. + :param type: the type to use to check the value against. + :param value_proc: if this parameter is provided it's a function that + is invoked instead of the type conversion to + convert a value. + :param prompt_suffix: a suffix that should be added to the prompt. + :param show_default: shows or hides the default value in the prompt. + :param err: if set to true the file defaults to ``stderr`` instead of + ``stdout``, the same as with echo. + :param show_choices: Show or hide choices if the passed type is a Choice. + For example if type is a Choice of either day or week, + show_choices is true and text is "Group by" then the + prompt will be "Group by (day, week): ". + """ + result = None + + def prompt_func(text): + f = hidden_prompt_func if hide_input else visible_prompt_func + try: + # Write the prompt separately so that we get nice + # coloring through colorama on Windows + echo(text, nl=False, err=err) + return f("") + except (KeyboardInterrupt, EOFError): + # getpass doesn't print a newline if the user aborts input with ^C. + # Allegedly this behavior is inherited from getpass(3). + # A doc bug has been filed at https://bugs.python.org/issue24711 + if hide_input: + echo(None, err=err) + raise Abort() + + if value_proc is None: + value_proc = convert_type(type, default) + + prompt = _build_prompt( + text, prompt_suffix, show_default, default, show_choices, type + ) + + while 1: + while 1: + value = prompt_func(prompt) + if value: + break + elif default is not None: + if isinstance(value_proc, Path): + # validate Path default value(exists, dir_okay etc.) + value = default + break + return default + try: + result = value_proc(value) + except UsageError as e: + echo("Error: {}".format(e.message), err=err) # noqa: B306 + continue + if not confirmation_prompt: + return result + while 1: + value2 = prompt_func("Repeat for confirmation: ") + if value2: + break + if value == value2: + return result + echo("Error: the two entered values do not match", err=err) + + +def confirm( + text, default=False, abort=False, prompt_suffix=": ", show_default=True, err=False +): + """Prompts for confirmation (yes/no question). + + If the user aborts the input by sending a interrupt signal this + function will catch it and raise a :exc:`Abort` exception. + + .. versionadded:: 4.0 + Added the `err` parameter. + + :param text: the question to ask. + :param default: the default for the prompt. + :param abort: if this is set to `True` a negative answer aborts the + exception by raising :exc:`Abort`. + :param prompt_suffix: a suffix that should be added to the prompt. + :param show_default: shows or hides the default value in the prompt. + :param err: if set to true the file defaults to ``stderr`` instead of + ``stdout``, the same as with echo. + """ + prompt = _build_prompt( + text, prompt_suffix, show_default, "Y/n" if default else "y/N" + ) + while 1: + try: + # Write the prompt separately so that we get nice + # coloring through colorama on Windows + echo(prompt, nl=False, err=err) + value = visible_prompt_func("").lower().strip() + except (KeyboardInterrupt, EOFError): + raise Abort() + if value in ("y", "yes"): + rv = True + elif value in ("n", "no"): + rv = False + elif value == "": + rv = default + else: + echo("Error: invalid input", err=err) + continue + break + if abort and not rv: + raise Abort() + return rv + + +def get_terminal_size(): + """Returns the current size of the terminal as tuple in the form + ``(width, height)`` in columns and rows. + """ + # If shutil has get_terminal_size() (Python 3.3 and later) use that + if sys.version_info >= (3, 3): + import shutil + + shutil_get_terminal_size = getattr(shutil, "get_terminal_size", None) + if shutil_get_terminal_size: + sz = shutil_get_terminal_size() + return sz.columns, sz.lines + + # We provide a sensible default for get_winterm_size() when being invoked + # inside a subprocess. Without this, it would not provide a useful input. + if get_winterm_size is not None: + size = get_winterm_size() + if size == (0, 0): + return (79, 24) + else: + return size + + def ioctl_gwinsz(fd): + try: + import fcntl + import termios + + cr = struct.unpack("hh", fcntl.ioctl(fd, termios.TIOCGWINSZ, "1234")) + except Exception: + return + return cr + + cr = ioctl_gwinsz(0) or ioctl_gwinsz(1) or ioctl_gwinsz(2) + if not cr: + try: + fd = os.open(os.ctermid(), os.O_RDONLY) + try: + cr = ioctl_gwinsz(fd) + finally: + os.close(fd) + except Exception: + pass + if not cr or not cr[0] or not cr[1]: + cr = (os.environ.get("LINES", 25), os.environ.get("COLUMNS", DEFAULT_COLUMNS)) + return int(cr[1]), int(cr[0]) + + +def echo_via_pager(text_or_generator, color=None): + """This function takes a text and shows it via an environment specific + pager on stdout. + + .. versionchanged:: 3.0 + Added the `color` flag. + + :param text_or_generator: the text to page, or alternatively, a + generator emitting the text to page. + :param color: controls if the pager supports ANSI colors or not. The + default is autodetection. + """ + color = resolve_color_default(color) + + if inspect.isgeneratorfunction(text_or_generator): + i = text_or_generator() + elif isinstance(text_or_generator, string_types): + i = [text_or_generator] + else: + i = iter(text_or_generator) + + # convert every element of i to a text type if necessary + text_generator = (el if isinstance(el, string_types) else text_type(el) for el in i) + + from ._termui_impl import pager + + return pager(itertools.chain(text_generator, "\n"), color) + + +def progressbar( + iterable=None, + length=None, + label=None, + show_eta=True, + show_percent=None, + show_pos=False, + item_show_func=None, + fill_char="#", + empty_char="-", + bar_template="%(label)s [%(bar)s] %(info)s", + info_sep=" ", + width=36, + file=None, + color=None, +): + """This function creates an iterable context manager that can be used + to iterate over something while showing a progress bar. It will + either iterate over the `iterable` or `length` items (that are counted + up). While iteration happens, this function will print a rendered + progress bar to the given `file` (defaults to stdout) and will attempt + to calculate remaining time and more. By default, this progress bar + will not be rendered if the file is not a terminal. + + The context manager creates the progress bar. When the context + manager is entered the progress bar is already created. With every + iteration over the progress bar, the iterable passed to the bar is + advanced and the bar is updated. When the context manager exits, + a newline is printed and the progress bar is finalized on screen. + + Note: The progress bar is currently designed for use cases where the + total progress can be expected to take at least several seconds. + Because of this, the ProgressBar class object won't display + progress that is considered too fast, and progress where the time + between steps is less than a second. + + No printing must happen or the progress bar will be unintentionally + destroyed. + + Example usage:: + + with progressbar(items) as bar: + for item in bar: + do_something_with(item) + + Alternatively, if no iterable is specified, one can manually update the + progress bar through the `update()` method instead of directly + iterating over the progress bar. The update method accepts the number + of steps to increment the bar with:: + + with progressbar(length=chunks.total_bytes) as bar: + for chunk in chunks: + process_chunk(chunk) + bar.update(chunks.bytes) + + .. versionadded:: 2.0 + + .. versionadded:: 4.0 + Added the `color` parameter. Added a `update` method to the + progressbar object. + + :param iterable: an iterable to iterate over. If not provided the length + is required. + :param length: the number of items to iterate over. By default the + progressbar will attempt to ask the iterator about its + length, which might or might not work. If an iterable is + also provided this parameter can be used to override the + length. If an iterable is not provided the progress bar + will iterate over a range of that length. + :param label: the label to show next to the progress bar. + :param show_eta: enables or disables the estimated time display. This is + automatically disabled if the length cannot be + determined. + :param show_percent: enables or disables the percentage display. The + default is `True` if the iterable has a length or + `False` if not. + :param show_pos: enables or disables the absolute position display. The + default is `False`. + :param item_show_func: a function called with the current item which + can return a string to show the current item + next to the progress bar. Note that the current + item can be `None`! + :param fill_char: the character to use to show the filled part of the + progress bar. + :param empty_char: the character to use to show the non-filled part of + the progress bar. + :param bar_template: the format string to use as template for the bar. + The parameters in it are ``label`` for the label, + ``bar`` for the progress bar and ``info`` for the + info section. + :param info_sep: the separator between multiple info items (eta etc.) + :param width: the width of the progress bar in characters, 0 means full + terminal width + :param file: the file to write to. If this is not a terminal then + only the label is printed. + :param color: controls if the terminal supports ANSI colors or not. The + default is autodetection. This is only needed if ANSI + codes are included anywhere in the progress bar output + which is not the case by default. + """ + from ._termui_impl import ProgressBar + + color = resolve_color_default(color) + return ProgressBar( + iterable=iterable, + length=length, + show_eta=show_eta, + show_percent=show_percent, + show_pos=show_pos, + item_show_func=item_show_func, + fill_char=fill_char, + empty_char=empty_char, + bar_template=bar_template, + info_sep=info_sep, + file=file, + label=label, + width=width, + color=color, + ) + + +def clear(): + """Clears the terminal screen. This will have the effect of clearing + the whole visible space of the terminal and moving the cursor to the + top left. This does not do anything if not connected to a terminal. + + .. versionadded:: 2.0 + """ + if not isatty(sys.stdout): + return + # If we're on Windows and we don't have colorama available, then we + # clear the screen by shelling out. Otherwise we can use an escape + # sequence. + if WIN: + os.system("cls") + else: + sys.stdout.write("\033[2J\033[1;1H") + + +def style( + text, + fg=None, + bg=None, + bold=None, + dim=None, + underline=None, + blink=None, + reverse=None, + reset=True, +): + """Styles a text with ANSI styles and returns the new string. By + default the styling is self contained which means that at the end + of the string a reset code is issued. This can be prevented by + passing ``reset=False``. + + Examples:: + + click.echo(click.style('Hello World!', fg='green')) + click.echo(click.style('ATTENTION!', blink=True)) + click.echo(click.style('Some things', reverse=True, fg='cyan')) + + Supported color names: + + * ``black`` (might be a gray) + * ``red`` + * ``green`` + * ``yellow`` (might be an orange) + * ``blue`` + * ``magenta`` + * ``cyan`` + * ``white`` (might be light gray) + * ``bright_black`` + * ``bright_red`` + * ``bright_green`` + * ``bright_yellow`` + * ``bright_blue`` + * ``bright_magenta`` + * ``bright_cyan`` + * ``bright_white`` + * ``reset`` (reset the color code only) + + .. versionadded:: 2.0 + + .. versionadded:: 7.0 + Added support for bright colors. + + :param text: the string to style with ansi codes. + :param fg: if provided this will become the foreground color. + :param bg: if provided this will become the background color. + :param bold: if provided this will enable or disable bold mode. + :param dim: if provided this will enable or disable dim mode. This is + badly supported. + :param underline: if provided this will enable or disable underline. + :param blink: if provided this will enable or disable blinking. + :param reverse: if provided this will enable or disable inverse + rendering (foreground becomes background and the + other way round). + :param reset: by default a reset-all code is added at the end of the + string which means that styles do not carry over. This + can be disabled to compose styles. + """ + bits = [] + if fg: + try: + bits.append("\033[{}m".format(_ansi_colors[fg])) + except KeyError: + raise TypeError("Unknown color '{}'".format(fg)) + if bg: + try: + bits.append("\033[{}m".format(_ansi_colors[bg] + 10)) + except KeyError: + raise TypeError("Unknown color '{}'".format(bg)) + if bold is not None: + bits.append("\033[{}m".format(1 if bold else 22)) + if dim is not None: + bits.append("\033[{}m".format(2 if dim else 22)) + if underline is not None: + bits.append("\033[{}m".format(4 if underline else 24)) + if blink is not None: + bits.append("\033[{}m".format(5 if blink else 25)) + if reverse is not None: + bits.append("\033[{}m".format(7 if reverse else 27)) + bits.append(text) + if reset: + bits.append(_ansi_reset_all) + return "".join(bits) + + +def unstyle(text): + """Removes ANSI styling information from a string. Usually it's not + necessary to use this function as Click's echo function will + automatically remove styling if necessary. + + .. versionadded:: 2.0 + + :param text: the text to remove style information from. + """ + return strip_ansi(text) + + +def secho(message=None, file=None, nl=True, err=False, color=None, **styles): + """This function combines :func:`echo` and :func:`style` into one + call. As such the following two calls are the same:: + + click.secho('Hello World!', fg='green') + click.echo(click.style('Hello World!', fg='green')) + + All keyword arguments are forwarded to the underlying functions + depending on which one they go with. + + .. versionadded:: 2.0 + """ + if message is not None: + message = style(message, **styles) + return echo(message, file=file, nl=nl, err=err, color=color) + + +def edit( + text=None, editor=None, env=None, require_save=True, extension=".txt", filename=None +): + r"""Edits the given text in the defined editor. If an editor is given + (should be the full path to the executable but the regular operating + system search path is used for finding the executable) it overrides + the detected editor. Optionally, some environment variables can be + used. If the editor is closed without changes, `None` is returned. In + case a file is edited directly the return value is always `None` and + `require_save` and `extension` are ignored. + + If the editor cannot be opened a :exc:`UsageError` is raised. + + Note for Windows: to simplify cross-platform usage, the newlines are + automatically converted from POSIX to Windows and vice versa. As such, + the message here will have ``\n`` as newline markers. + + :param text: the text to edit. + :param editor: optionally the editor to use. Defaults to automatic + detection. + :param env: environment variables to forward to the editor. + :param require_save: if this is true, then not saving in the editor + will make the return value become `None`. + :param extension: the extension to tell the editor about. This defaults + to `.txt` but changing this might change syntax + highlighting. + :param filename: if provided it will edit this file instead of the + provided text contents. It will not use a temporary + file as an indirection in that case. + """ + from ._termui_impl import Editor + + editor = Editor( + editor=editor, env=env, require_save=require_save, extension=extension + ) + if filename is None: + return editor.edit(text) + editor.edit_file(filename) + + +def launch(url, wait=False, locate=False): + """This function launches the given URL (or filename) in the default + viewer application for this file type. If this is an executable, it + might launch the executable in a new session. The return value is + the exit code of the launched application. Usually, ``0`` indicates + success. + + Examples:: + + click.launch('https://click.palletsprojects.com/') + click.launch('/my/downloaded/file', locate=True) + + .. versionadded:: 2.0 + + :param url: URL or filename of the thing to launch. + :param wait: waits for the program to stop. + :param locate: if this is set to `True` then instead of launching the + application associated with the URL it will attempt to + launch a file manager with the file located. This + might have weird effects if the URL does not point to + the filesystem. + """ + from ._termui_impl import open_url + + return open_url(url, wait=wait, locate=locate) + + +# If this is provided, getchar() calls into this instead. This is used +# for unittesting purposes. +_getchar = None + + +def getchar(echo=False): + """Fetches a single character from the terminal and returns it. This + will always return a unicode character and under certain rare + circumstances this might return more than one character. The + situations which more than one character is returned is when for + whatever reason multiple characters end up in the terminal buffer or + standard input was not actually a terminal. + + Note that this will always read from the terminal, even if something + is piped into the standard input. + + Note for Windows: in rare cases when typing non-ASCII characters, this + function might wait for a second character and then return both at once. + This is because certain Unicode characters look like special-key markers. + + .. versionadded:: 2.0 + + :param echo: if set to `True`, the character read will also show up on + the terminal. The default is to not show it. + """ + f = _getchar + if f is None: + from ._termui_impl import getchar as f + return f(echo) + + +def raw_terminal(): + from ._termui_impl import raw_terminal as f + + return f() + + +def pause(info="Press any key to continue ...", err=False): + """This command stops execution and waits for the user to press any + key to continue. This is similar to the Windows batch "pause" + command. If the program is not run through a terminal, this command + will instead do nothing. + + .. versionadded:: 2.0 + + .. versionadded:: 4.0 + Added the `err` parameter. + + :param info: the info string to print before pausing. + :param err: if set to message goes to ``stderr`` instead of + ``stdout``, the same as with echo. + """ + if not isatty(sys.stdin) or not isatty(sys.stdout): + return + try: + if info: + echo(info, nl=False, err=err) + try: + getchar() + except (KeyboardInterrupt, EOFError): + pass + finally: + if info: + echo(err=err) diff --git a/matteo_env/Lib/site-packages/click/testing.py b/matteo_env/Lib/site-packages/click/testing.py new file mode 100644 index 0000000..a3dba3b --- /dev/null +++ b/matteo_env/Lib/site-packages/click/testing.py @@ -0,0 +1,382 @@ +import contextlib +import os +import shlex +import shutil +import sys +import tempfile + +from . import formatting +from . import termui +from . import utils +from ._compat import iteritems +from ._compat import PY2 +from ._compat import string_types + + +if PY2: + from cStringIO import StringIO +else: + import io + from ._compat import _find_binary_reader + + +class EchoingStdin(object): + def __init__(self, input, output): + self._input = input + self._output = output + + def __getattr__(self, x): + return getattr(self._input, x) + + def _echo(self, rv): + self._output.write(rv) + return rv + + def read(self, n=-1): + return self._echo(self._input.read(n)) + + def readline(self, n=-1): + return self._echo(self._input.readline(n)) + + def readlines(self): + return [self._echo(x) for x in self._input.readlines()] + + def __iter__(self): + return iter(self._echo(x) for x in self._input) + + def __repr__(self): + return repr(self._input) + + +def make_input_stream(input, charset): + # Is already an input stream. + if hasattr(input, "read"): + if PY2: + return input + rv = _find_binary_reader(input) + if rv is not None: + return rv + raise TypeError("Could not find binary reader for input stream.") + + if input is None: + input = b"" + elif not isinstance(input, bytes): + input = input.encode(charset) + if PY2: + return StringIO(input) + return io.BytesIO(input) + + +class Result(object): + """Holds the captured result of an invoked CLI script.""" + + def __init__( + self, runner, stdout_bytes, stderr_bytes, exit_code, exception, exc_info=None + ): + #: The runner that created the result + self.runner = runner + #: The standard output as bytes. + self.stdout_bytes = stdout_bytes + #: The standard error as bytes, or None if not available + self.stderr_bytes = stderr_bytes + #: The exit code as integer. + self.exit_code = exit_code + #: The exception that happened if one did. + self.exception = exception + #: The traceback + self.exc_info = exc_info + + @property + def output(self): + """The (standard) output as unicode string.""" + return self.stdout + + @property + def stdout(self): + """The standard output as unicode string.""" + return self.stdout_bytes.decode(self.runner.charset, "replace").replace( + "\r\n", "\n" + ) + + @property + def stderr(self): + """The standard error as unicode string.""" + if self.stderr_bytes is None: + raise ValueError("stderr not separately captured") + return self.stderr_bytes.decode(self.runner.charset, "replace").replace( + "\r\n", "\n" + ) + + def __repr__(self): + return "<{} {}>".format( + type(self).__name__, repr(self.exception) if self.exception else "okay" + ) + + +class CliRunner(object): + """The CLI runner provides functionality to invoke a Click command line + script for unittesting purposes in a isolated environment. This only + works in single-threaded systems without any concurrency as it changes the + global interpreter state. + + :param charset: the character set for the input and output data. This is + UTF-8 by default and should not be changed currently as + the reporting to Click only works in Python 2 properly. + :param env: a dictionary with environment variables for overriding. + :param echo_stdin: if this is set to `True`, then reading from stdin writes + to stdout. This is useful for showing examples in + some circumstances. Note that regular prompts + will automatically echo the input. + :param mix_stderr: if this is set to `False`, then stdout and stderr are + preserved as independent streams. This is useful for + Unix-philosophy apps that have predictable stdout and + noisy stderr, such that each may be measured + independently + """ + + def __init__(self, charset=None, env=None, echo_stdin=False, mix_stderr=True): + if charset is None: + charset = "utf-8" + self.charset = charset + self.env = env or {} + self.echo_stdin = echo_stdin + self.mix_stderr = mix_stderr + + def get_default_prog_name(self, cli): + """Given a command object it will return the default program name + for it. The default is the `name` attribute or ``"root"`` if not + set. + """ + return cli.name or "root" + + def make_env(self, overrides=None): + """Returns the environment overrides for invoking a script.""" + rv = dict(self.env) + if overrides: + rv.update(overrides) + return rv + + @contextlib.contextmanager + def isolation(self, input=None, env=None, color=False): + """A context manager that sets up the isolation for invoking of a + command line tool. This sets up stdin with the given input data + and `os.environ` with the overrides from the given dictionary. + This also rebinds some internals in Click to be mocked (like the + prompt functionality). + + This is automatically done in the :meth:`invoke` method. + + .. versionadded:: 4.0 + The ``color`` parameter was added. + + :param input: the input stream to put into sys.stdin. + :param env: the environment overrides as dictionary. + :param color: whether the output should contain color codes. The + application can still override this explicitly. + """ + input = make_input_stream(input, self.charset) + + old_stdin = sys.stdin + old_stdout = sys.stdout + old_stderr = sys.stderr + old_forced_width = formatting.FORCED_WIDTH + formatting.FORCED_WIDTH = 80 + + env = self.make_env(env) + + if PY2: + bytes_output = StringIO() + if self.echo_stdin: + input = EchoingStdin(input, bytes_output) + sys.stdout = bytes_output + if not self.mix_stderr: + bytes_error = StringIO() + sys.stderr = bytes_error + else: + bytes_output = io.BytesIO() + if self.echo_stdin: + input = EchoingStdin(input, bytes_output) + input = io.TextIOWrapper(input, encoding=self.charset) + sys.stdout = io.TextIOWrapper(bytes_output, encoding=self.charset) + if not self.mix_stderr: + bytes_error = io.BytesIO() + sys.stderr = io.TextIOWrapper(bytes_error, encoding=self.charset) + + if self.mix_stderr: + sys.stderr = sys.stdout + + sys.stdin = input + + def visible_input(prompt=None): + sys.stdout.write(prompt or "") + val = input.readline().rstrip("\r\n") + sys.stdout.write("{}\n".format(val)) + sys.stdout.flush() + return val + + def hidden_input(prompt=None): + sys.stdout.write("{}\n".format(prompt or "")) + sys.stdout.flush() + return input.readline().rstrip("\r\n") + + def _getchar(echo): + char = sys.stdin.read(1) + if echo: + sys.stdout.write(char) + sys.stdout.flush() + return char + + default_color = color + + def should_strip_ansi(stream=None, color=None): + if color is None: + return not default_color + return not color + + old_visible_prompt_func = termui.visible_prompt_func + old_hidden_prompt_func = termui.hidden_prompt_func + old__getchar_func = termui._getchar + old_should_strip_ansi = utils.should_strip_ansi + termui.visible_prompt_func = visible_input + termui.hidden_prompt_func = hidden_input + termui._getchar = _getchar + utils.should_strip_ansi = should_strip_ansi + + old_env = {} + try: + for key, value in iteritems(env): + old_env[key] = os.environ.get(key) + if value is None: + try: + del os.environ[key] + except Exception: + pass + else: + os.environ[key] = value + yield (bytes_output, not self.mix_stderr and bytes_error) + finally: + for key, value in iteritems(old_env): + if value is None: + try: + del os.environ[key] + except Exception: + pass + else: + os.environ[key] = value + sys.stdout = old_stdout + sys.stderr = old_stderr + sys.stdin = old_stdin + termui.visible_prompt_func = old_visible_prompt_func + termui.hidden_prompt_func = old_hidden_prompt_func + termui._getchar = old__getchar_func + utils.should_strip_ansi = old_should_strip_ansi + formatting.FORCED_WIDTH = old_forced_width + + def invoke( + self, + cli, + args=None, + input=None, + env=None, + catch_exceptions=True, + color=False, + **extra + ): + """Invokes a command in an isolated environment. The arguments are + forwarded directly to the command line script, the `extra` keyword + arguments are passed to the :meth:`~clickpkg.Command.main` function of + the command. + + This returns a :class:`Result` object. + + .. versionadded:: 3.0 + The ``catch_exceptions`` parameter was added. + + .. versionchanged:: 3.0 + The result object now has an `exc_info` attribute with the + traceback if available. + + .. versionadded:: 4.0 + The ``color`` parameter was added. + + :param cli: the command to invoke + :param args: the arguments to invoke. It may be given as an iterable + or a string. When given as string it will be interpreted + as a Unix shell command. More details at + :func:`shlex.split`. + :param input: the input data for `sys.stdin`. + :param env: the environment overrides. + :param catch_exceptions: Whether to catch any other exceptions than + ``SystemExit``. + :param extra: the keyword arguments to pass to :meth:`main`. + :param color: whether the output should contain color codes. The + application can still override this explicitly. + """ + exc_info = None + with self.isolation(input=input, env=env, color=color) as outstreams: + exception = None + exit_code = 0 + + if isinstance(args, string_types): + args = shlex.split(args) + + try: + prog_name = extra.pop("prog_name") + except KeyError: + prog_name = self.get_default_prog_name(cli) + + try: + cli.main(args=args or (), prog_name=prog_name, **extra) + except SystemExit as e: + exc_info = sys.exc_info() + exit_code = e.code + if exit_code is None: + exit_code = 0 + + if exit_code != 0: + exception = e + + if not isinstance(exit_code, int): + sys.stdout.write(str(exit_code)) + sys.stdout.write("\n") + exit_code = 1 + + except Exception as e: + if not catch_exceptions: + raise + exception = e + exit_code = 1 + exc_info = sys.exc_info() + finally: + sys.stdout.flush() + stdout = outstreams[0].getvalue() + if self.mix_stderr: + stderr = None + else: + stderr = outstreams[1].getvalue() + + return Result( + runner=self, + stdout_bytes=stdout, + stderr_bytes=stderr, + exit_code=exit_code, + exception=exception, + exc_info=exc_info, + ) + + @contextlib.contextmanager + def isolated_filesystem(self): + """A context manager that creates a temporary folder and changes + the current working directory to it for isolated filesystem tests. + """ + cwd = os.getcwd() + t = tempfile.mkdtemp() + os.chdir(t) + try: + yield t + finally: + os.chdir(cwd) + try: + shutil.rmtree(t) + except (OSError, IOError): # noqa: B014 + pass diff --git a/matteo_env/Lib/site-packages/click/types.py b/matteo_env/Lib/site-packages/click/types.py new file mode 100644 index 0000000..505c39f --- /dev/null +++ b/matteo_env/Lib/site-packages/click/types.py @@ -0,0 +1,762 @@ +import os +import stat +from datetime import datetime + +from ._compat import _get_argv_encoding +from ._compat import filename_to_ui +from ._compat import get_filesystem_encoding +from ._compat import get_streerror +from ._compat import open_stream +from ._compat import PY2 +from ._compat import text_type +from .exceptions import BadParameter +from .utils import LazyFile +from .utils import safecall + + +class ParamType(object): + """Helper for converting values through types. The following is + necessary for a valid type: + + * it needs a name + * it needs to pass through None unchanged + * it needs to convert from a string + * it needs to convert its result type through unchanged + (eg: needs to be idempotent) + * it needs to be able to deal with param and context being `None`. + This can be the case when the object is used with prompt + inputs. + """ + + is_composite = False + + #: the descriptive name of this type + name = None + + #: if a list of this type is expected and the value is pulled from a + #: string environment variable, this is what splits it up. `None` + #: means any whitespace. For all parameters the general rule is that + #: whitespace splits them up. The exception are paths and files which + #: are split by ``os.path.pathsep`` by default (":" on Unix and ";" on + #: Windows). + envvar_list_splitter = None + + def __call__(self, value, param=None, ctx=None): + if value is not None: + return self.convert(value, param, ctx) + + def get_metavar(self, param): + """Returns the metavar default for this param if it provides one.""" + + def get_missing_message(self, param): + """Optionally might return extra information about a missing + parameter. + + .. versionadded:: 2.0 + """ + + def convert(self, value, param, ctx): + """Converts the value. This is not invoked for values that are + `None` (the missing value). + """ + return value + + def split_envvar_value(self, rv): + """Given a value from an environment variable this splits it up + into small chunks depending on the defined envvar list splitter. + + If the splitter is set to `None`, which means that whitespace splits, + then leading and trailing whitespace is ignored. Otherwise, leading + and trailing splitters usually lead to empty items being included. + """ + return (rv or "").split(self.envvar_list_splitter) + + def fail(self, message, param=None, ctx=None): + """Helper method to fail with an invalid value message.""" + raise BadParameter(message, ctx=ctx, param=param) + + +class CompositeParamType(ParamType): + is_composite = True + + @property + def arity(self): + raise NotImplementedError() + + +class FuncParamType(ParamType): + def __init__(self, func): + self.name = func.__name__ + self.func = func + + def convert(self, value, param, ctx): + try: + return self.func(value) + except ValueError: + try: + value = text_type(value) + except UnicodeError: + value = str(value).decode("utf-8", "replace") + self.fail(value, param, ctx) + + +class UnprocessedParamType(ParamType): + name = "text" + + def convert(self, value, param, ctx): + return value + + def __repr__(self): + return "UNPROCESSED" + + +class StringParamType(ParamType): + name = "text" + + def convert(self, value, param, ctx): + if isinstance(value, bytes): + enc = _get_argv_encoding() + try: + value = value.decode(enc) + except UnicodeError: + fs_enc = get_filesystem_encoding() + if fs_enc != enc: + try: + value = value.decode(fs_enc) + except UnicodeError: + value = value.decode("utf-8", "replace") + else: + value = value.decode("utf-8", "replace") + return value + return value + + def __repr__(self): + return "STRING" + + +class Choice(ParamType): + """The choice type allows a value to be checked against a fixed set + of supported values. All of these values have to be strings. + + You should only pass a list or tuple of choices. Other iterables + (like generators) may lead to surprising results. + + The resulting value will always be one of the originally passed choices + regardless of ``case_sensitive`` or any ``ctx.token_normalize_func`` + being specified. + + See :ref:`choice-opts` for an example. + + :param case_sensitive: Set to false to make choices case + insensitive. Defaults to true. + """ + + name = "choice" + + def __init__(self, choices, case_sensitive=True): + self.choices = choices + self.case_sensitive = case_sensitive + + def get_metavar(self, param): + return "[{}]".format("|".join(self.choices)) + + def get_missing_message(self, param): + return "Choose from:\n\t{}.".format(",\n\t".join(self.choices)) + + def convert(self, value, param, ctx): + # Match through normalization and case sensitivity + # first do token_normalize_func, then lowercase + # preserve original `value` to produce an accurate message in + # `self.fail` + normed_value = value + normed_choices = {choice: choice for choice in self.choices} + + if ctx is not None and ctx.token_normalize_func is not None: + normed_value = ctx.token_normalize_func(value) + normed_choices = { + ctx.token_normalize_func(normed_choice): original + for normed_choice, original in normed_choices.items() + } + + if not self.case_sensitive: + if PY2: + lower = str.lower + else: + lower = str.casefold + + normed_value = lower(normed_value) + normed_choices = { + lower(normed_choice): original + for normed_choice, original in normed_choices.items() + } + + if normed_value in normed_choices: + return normed_choices[normed_value] + + self.fail( + "invalid choice: {}. (choose from {})".format( + value, ", ".join(self.choices) + ), + param, + ctx, + ) + + def __repr__(self): + return "Choice('{}')".format(list(self.choices)) + + +class DateTime(ParamType): + """The DateTime type converts date strings into `datetime` objects. + + The format strings which are checked are configurable, but default to some + common (non-timezone aware) ISO 8601 formats. + + When specifying *DateTime* formats, you should only pass a list or a tuple. + Other iterables, like generators, may lead to surprising results. + + The format strings are processed using ``datetime.strptime``, and this + consequently defines the format strings which are allowed. + + Parsing is tried using each format, in order, and the first format which + parses successfully is used. + + :param formats: A list or tuple of date format strings, in the order in + which they should be tried. Defaults to + ``'%Y-%m-%d'``, ``'%Y-%m-%dT%H:%M:%S'``, + ``'%Y-%m-%d %H:%M:%S'``. + """ + + name = "datetime" + + def __init__(self, formats=None): + self.formats = formats or ["%Y-%m-%d", "%Y-%m-%dT%H:%M:%S", "%Y-%m-%d %H:%M:%S"] + + def get_metavar(self, param): + return "[{}]".format("|".join(self.formats)) + + def _try_to_convert_date(self, value, format): + try: + return datetime.strptime(value, format) + except ValueError: + return None + + def convert(self, value, param, ctx): + # Exact match + for format in self.formats: + dtime = self._try_to_convert_date(value, format) + if dtime: + return dtime + + self.fail( + "invalid datetime format: {}. (choose from {})".format( + value, ", ".join(self.formats) + ) + ) + + def __repr__(self): + return "DateTime" + + +class IntParamType(ParamType): + name = "integer" + + def convert(self, value, param, ctx): + try: + return int(value) + except ValueError: + self.fail("{} is not a valid integer".format(value), param, ctx) + + def __repr__(self): + return "INT" + + +class IntRange(IntParamType): + """A parameter that works similar to :data:`click.INT` but restricts + the value to fit into a range. The default behavior is to fail if the + value falls outside the range, but it can also be silently clamped + between the two edges. + + See :ref:`ranges` for an example. + """ + + name = "integer range" + + def __init__(self, min=None, max=None, clamp=False): + self.min = min + self.max = max + self.clamp = clamp + + def convert(self, value, param, ctx): + rv = IntParamType.convert(self, value, param, ctx) + if self.clamp: + if self.min is not None and rv < self.min: + return self.min + if self.max is not None and rv > self.max: + return self.max + if ( + self.min is not None + and rv < self.min + or self.max is not None + and rv > self.max + ): + if self.min is None: + self.fail( + "{} is bigger than the maximum valid value {}.".format( + rv, self.max + ), + param, + ctx, + ) + elif self.max is None: + self.fail( + "{} is smaller than the minimum valid value {}.".format( + rv, self.min + ), + param, + ctx, + ) + else: + self.fail( + "{} is not in the valid range of {} to {}.".format( + rv, self.min, self.max + ), + param, + ctx, + ) + return rv + + def __repr__(self): + return "IntRange({}, {})".format(self.min, self.max) + + +class FloatParamType(ParamType): + name = "float" + + def convert(self, value, param, ctx): + try: + return float(value) + except ValueError: + self.fail( + "{} is not a valid floating point value".format(value), param, ctx + ) + + def __repr__(self): + return "FLOAT" + + +class FloatRange(FloatParamType): + """A parameter that works similar to :data:`click.FLOAT` but restricts + the value to fit into a range. The default behavior is to fail if the + value falls outside the range, but it can also be silently clamped + between the two edges. + + See :ref:`ranges` for an example. + """ + + name = "float range" + + def __init__(self, min=None, max=None, clamp=False): + self.min = min + self.max = max + self.clamp = clamp + + def convert(self, value, param, ctx): + rv = FloatParamType.convert(self, value, param, ctx) + if self.clamp: + if self.min is not None and rv < self.min: + return self.min + if self.max is not None and rv > self.max: + return self.max + if ( + self.min is not None + and rv < self.min + or self.max is not None + and rv > self.max + ): + if self.min is None: + self.fail( + "{} is bigger than the maximum valid value {}.".format( + rv, self.max + ), + param, + ctx, + ) + elif self.max is None: + self.fail( + "{} is smaller than the minimum valid value {}.".format( + rv, self.min + ), + param, + ctx, + ) + else: + self.fail( + "{} is not in the valid range of {} to {}.".format( + rv, self.min, self.max + ), + param, + ctx, + ) + return rv + + def __repr__(self): + return "FloatRange({}, {})".format(self.min, self.max) + + +class BoolParamType(ParamType): + name = "boolean" + + def convert(self, value, param, ctx): + if isinstance(value, bool): + return bool(value) + value = value.lower() + if value in ("true", "t", "1", "yes", "y"): + return True + elif value in ("false", "f", "0", "no", "n"): + return False + self.fail("{} is not a valid boolean".format(value), param, ctx) + + def __repr__(self): + return "BOOL" + + +class UUIDParameterType(ParamType): + name = "uuid" + + def convert(self, value, param, ctx): + import uuid + + try: + if PY2 and isinstance(value, text_type): + value = value.encode("ascii") + return uuid.UUID(value) + except ValueError: + self.fail("{} is not a valid UUID value".format(value), param, ctx) + + def __repr__(self): + return "UUID" + + +class File(ParamType): + """Declares a parameter to be a file for reading or writing. The file + is automatically closed once the context tears down (after the command + finished working). + + Files can be opened for reading or writing. The special value ``-`` + indicates stdin or stdout depending on the mode. + + By default, the file is opened for reading text data, but it can also be + opened in binary mode or for writing. The encoding parameter can be used + to force a specific encoding. + + The `lazy` flag controls if the file should be opened immediately or upon + first IO. The default is to be non-lazy for standard input and output + streams as well as files opened for reading, `lazy` otherwise. When opening a + file lazily for reading, it is still opened temporarily for validation, but + will not be held open until first IO. lazy is mainly useful when opening + for writing to avoid creating the file until it is needed. + + Starting with Click 2.0, files can also be opened atomically in which + case all writes go into a separate file in the same folder and upon + completion the file will be moved over to the original location. This + is useful if a file regularly read by other users is modified. + + See :ref:`file-args` for more information. + """ + + name = "filename" + envvar_list_splitter = os.path.pathsep + + def __init__( + self, mode="r", encoding=None, errors="strict", lazy=None, atomic=False + ): + self.mode = mode + self.encoding = encoding + self.errors = errors + self.lazy = lazy + self.atomic = atomic + + def resolve_lazy_flag(self, value): + if self.lazy is not None: + return self.lazy + if value == "-": + return False + elif "w" in self.mode: + return True + return False + + def convert(self, value, param, ctx): + try: + if hasattr(value, "read") or hasattr(value, "write"): + return value + + lazy = self.resolve_lazy_flag(value) + + if lazy: + f = LazyFile( + value, self.mode, self.encoding, self.errors, atomic=self.atomic + ) + if ctx is not None: + ctx.call_on_close(f.close_intelligently) + return f + + f, should_close = open_stream( + value, self.mode, self.encoding, self.errors, atomic=self.atomic + ) + # If a context is provided, we automatically close the file + # at the end of the context execution (or flush out). If a + # context does not exist, it's the caller's responsibility to + # properly close the file. This for instance happens when the + # type is used with prompts. + if ctx is not None: + if should_close: + ctx.call_on_close(safecall(f.close)) + else: + ctx.call_on_close(safecall(f.flush)) + return f + except (IOError, OSError) as e: # noqa: B014 + self.fail( + "Could not open file: {}: {}".format( + filename_to_ui(value), get_streerror(e) + ), + param, + ctx, + ) + + +class Path(ParamType): + """The path type is similar to the :class:`File` type but it performs + different checks. First of all, instead of returning an open file + handle it returns just the filename. Secondly, it can perform various + basic checks about what the file or directory should be. + + .. versionchanged:: 6.0 + `allow_dash` was added. + + :param exists: if set to true, the file or directory needs to exist for + this value to be valid. If this is not required and a + file does indeed not exist, then all further checks are + silently skipped. + :param file_okay: controls if a file is a possible value. + :param dir_okay: controls if a directory is a possible value. + :param writable: if true, a writable check is performed. + :param readable: if true, a readable check is performed. + :param resolve_path: if this is true, then the path is fully resolved + before the value is passed onwards. This means + that it's absolute and symlinks are resolved. It + will not expand a tilde-prefix, as this is + supposed to be done by the shell only. + :param allow_dash: If this is set to `True`, a single dash to indicate + standard streams is permitted. + :param path_type: optionally a string type that should be used to + represent the path. The default is `None` which + means the return value will be either bytes or + unicode depending on what makes most sense given the + input data Click deals with. + """ + + envvar_list_splitter = os.path.pathsep + + def __init__( + self, + exists=False, + file_okay=True, + dir_okay=True, + writable=False, + readable=True, + resolve_path=False, + allow_dash=False, + path_type=None, + ): + self.exists = exists + self.file_okay = file_okay + self.dir_okay = dir_okay + self.writable = writable + self.readable = readable + self.resolve_path = resolve_path + self.allow_dash = allow_dash + self.type = path_type + + if self.file_okay and not self.dir_okay: + self.name = "file" + self.path_type = "File" + elif self.dir_okay and not self.file_okay: + self.name = "directory" + self.path_type = "Directory" + else: + self.name = "path" + self.path_type = "Path" + + def coerce_path_result(self, rv): + if self.type is not None and not isinstance(rv, self.type): + if self.type is text_type: + rv = rv.decode(get_filesystem_encoding()) + else: + rv = rv.encode(get_filesystem_encoding()) + return rv + + def convert(self, value, param, ctx): + rv = value + + is_dash = self.file_okay and self.allow_dash and rv in (b"-", "-") + + if not is_dash: + if self.resolve_path: + rv = os.path.realpath(rv) + + try: + st = os.stat(rv) + except OSError: + if not self.exists: + return self.coerce_path_result(rv) + self.fail( + "{} '{}' does not exist.".format( + self.path_type, filename_to_ui(value) + ), + param, + ctx, + ) + + if not self.file_okay and stat.S_ISREG(st.st_mode): + self.fail( + "{} '{}' is a file.".format(self.path_type, filename_to_ui(value)), + param, + ctx, + ) + if not self.dir_okay and stat.S_ISDIR(st.st_mode): + self.fail( + "{} '{}' is a directory.".format( + self.path_type, filename_to_ui(value) + ), + param, + ctx, + ) + if self.writable and not os.access(value, os.W_OK): + self.fail( + "{} '{}' is not writable.".format( + self.path_type, filename_to_ui(value) + ), + param, + ctx, + ) + if self.readable and not os.access(value, os.R_OK): + self.fail( + "{} '{}' is not readable.".format( + self.path_type, filename_to_ui(value) + ), + param, + ctx, + ) + + return self.coerce_path_result(rv) + + +class Tuple(CompositeParamType): + """The default behavior of Click is to apply a type on a value directly. + This works well in most cases, except for when `nargs` is set to a fixed + count and different types should be used for different items. In this + case the :class:`Tuple` type can be used. This type can only be used + if `nargs` is set to a fixed number. + + For more information see :ref:`tuple-type`. + + This can be selected by using a Python tuple literal as a type. + + :param types: a list of types that should be used for the tuple items. + """ + + def __init__(self, types): + self.types = [convert_type(ty) for ty in types] + + @property + def name(self): + return "<{}>".format(" ".join(ty.name for ty in self.types)) + + @property + def arity(self): + return len(self.types) + + def convert(self, value, param, ctx): + if len(value) != len(self.types): + raise TypeError( + "It would appear that nargs is set to conflict with the" + " composite type arity." + ) + return tuple(ty(x, param, ctx) for ty, x in zip(self.types, value)) + + +def convert_type(ty, default=None): + """Converts a callable or python type into the most appropriate + param type. + """ + guessed_type = False + if ty is None and default is not None: + if isinstance(default, tuple): + ty = tuple(map(type, default)) + else: + ty = type(default) + guessed_type = True + + if isinstance(ty, tuple): + return Tuple(ty) + if isinstance(ty, ParamType): + return ty + if ty is text_type or ty is str or ty is None: + return STRING + if ty is int: + return INT + # Booleans are only okay if not guessed. This is done because for + # flags the default value is actually a bit of a lie in that it + # indicates which of the flags is the one we want. See get_default() + # for more information. + if ty is bool and not guessed_type: + return BOOL + if ty is float: + return FLOAT + if guessed_type: + return STRING + + # Catch a common mistake + if __debug__: + try: + if issubclass(ty, ParamType): + raise AssertionError( + "Attempted to use an uninstantiated parameter type ({}).".format(ty) + ) + except TypeError: + pass + return FuncParamType(ty) + + +#: A dummy parameter type that just does nothing. From a user's +#: perspective this appears to just be the same as `STRING` but internally +#: no string conversion takes place. This is necessary to achieve the +#: same bytes/unicode behavior on Python 2/3 in situations where you want +#: to not convert argument types. This is usually useful when working +#: with file paths as they can appear in bytes and unicode. +#: +#: For path related uses the :class:`Path` type is a better choice but +#: there are situations where an unprocessed type is useful which is why +#: it is is provided. +#: +#: .. versionadded:: 4.0 +UNPROCESSED = UnprocessedParamType() + +#: A unicode string parameter type which is the implicit default. This +#: can also be selected by using ``str`` as type. +STRING = StringParamType() + +#: An integer parameter. This can also be selected by using ``int`` as +#: type. +INT = IntParamType() + +#: A floating point value parameter. This can also be selected by using +#: ``float`` as type. +FLOAT = FloatParamType() + +#: A boolean parameter. This is the default for boolean flags. This can +#: also be selected by using ``bool`` as a type. +BOOL = BoolParamType() + +#: A UUID parameter. +UUID = UUIDParameterType() diff --git a/matteo_env/Lib/site-packages/click/utils.py b/matteo_env/Lib/site-packages/click/utils.py new file mode 100644 index 0000000..79265e7 --- /dev/null +++ b/matteo_env/Lib/site-packages/click/utils.py @@ -0,0 +1,455 @@ +import os +import sys + +from ._compat import _default_text_stderr +from ._compat import _default_text_stdout +from ._compat import auto_wrap_for_ansi +from ._compat import binary_streams +from ._compat import filename_to_ui +from ._compat import get_filesystem_encoding +from ._compat import get_streerror +from ._compat import is_bytes +from ._compat import open_stream +from ._compat import PY2 +from ._compat import should_strip_ansi +from ._compat import string_types +from ._compat import strip_ansi +from ._compat import text_streams +from ._compat import text_type +from ._compat import WIN +from .globals import resolve_color_default + +if not PY2: + from ._compat import _find_binary_writer +elif WIN: + from ._winconsole import _get_windows_argv + from ._winconsole import _hash_py_argv + from ._winconsole import _initial_argv_hash + +echo_native_types = string_types + (bytes, bytearray) + + +def _posixify(name): + return "-".join(name.split()).lower() + + +def safecall(func): + """Wraps a function so that it swallows exceptions.""" + + def wrapper(*args, **kwargs): + try: + return func(*args, **kwargs) + except Exception: + pass + + return wrapper + + +def make_str(value): + """Converts a value into a valid string.""" + if isinstance(value, bytes): + try: + return value.decode(get_filesystem_encoding()) + except UnicodeError: + return value.decode("utf-8", "replace") + return text_type(value) + + +def make_default_short_help(help, max_length=45): + """Return a condensed version of help string.""" + words = help.split() + total_length = 0 + result = [] + done = False + + for word in words: + if word[-1:] == ".": + done = True + new_length = 1 + len(word) if result else len(word) + if total_length + new_length > max_length: + result.append("...") + done = True + else: + if result: + result.append(" ") + result.append(word) + if done: + break + total_length += new_length + + return "".join(result) + + +class LazyFile(object): + """A lazy file works like a regular file but it does not fully open + the file but it does perform some basic checks early to see if the + filename parameter does make sense. This is useful for safely opening + files for writing. + """ + + def __init__( + self, filename, mode="r", encoding=None, errors="strict", atomic=False + ): + self.name = filename + self.mode = mode + self.encoding = encoding + self.errors = errors + self.atomic = atomic + + if filename == "-": + self._f, self.should_close = open_stream(filename, mode, encoding, errors) + else: + if "r" in mode: + # Open and close the file in case we're opening it for + # reading so that we can catch at least some errors in + # some cases early. + open(filename, mode).close() + self._f = None + self.should_close = True + + def __getattr__(self, name): + return getattr(self.open(), name) + + def __repr__(self): + if self._f is not None: + return repr(self._f) + return "".format(self.name, self.mode) + + def open(self): + """Opens the file if it's not yet open. This call might fail with + a :exc:`FileError`. Not handling this error will produce an error + that Click shows. + """ + if self._f is not None: + return self._f + try: + rv, self.should_close = open_stream( + self.name, self.mode, self.encoding, self.errors, atomic=self.atomic + ) + except (IOError, OSError) as e: # noqa: E402 + from .exceptions import FileError + + raise FileError(self.name, hint=get_streerror(e)) + self._f = rv + return rv + + def close(self): + """Closes the underlying file, no matter what.""" + if self._f is not None: + self._f.close() + + def close_intelligently(self): + """This function only closes the file if it was opened by the lazy + file wrapper. For instance this will never close stdin. + """ + if self.should_close: + self.close() + + def __enter__(self): + return self + + def __exit__(self, exc_type, exc_value, tb): + self.close_intelligently() + + def __iter__(self): + self.open() + return iter(self._f) + + +class KeepOpenFile(object): + def __init__(self, file): + self._file = file + + def __getattr__(self, name): + return getattr(self._file, name) + + def __enter__(self): + return self + + def __exit__(self, exc_type, exc_value, tb): + pass + + def __repr__(self): + return repr(self._file) + + def __iter__(self): + return iter(self._file) + + +def echo(message=None, file=None, nl=True, err=False, color=None): + """Prints a message plus a newline to the given file or stdout. On + first sight, this looks like the print function, but it has improved + support for handling Unicode and binary data that does not fail no + matter how badly configured the system is. + + Primarily it means that you can print binary data as well as Unicode + data on both 2.x and 3.x to the given file in the most appropriate way + possible. This is a very carefree function in that it will try its + best to not fail. As of Click 6.0 this includes support for unicode + output on the Windows console. + + In addition to that, if `colorama`_ is installed, the echo function will + also support clever handling of ANSI codes. Essentially it will then + do the following: + + - add transparent handling of ANSI color codes on Windows. + - hide ANSI codes automatically if the destination file is not a + terminal. + + .. _colorama: https://pypi.org/project/colorama/ + + .. versionchanged:: 6.0 + As of Click 6.0 the echo function will properly support unicode + output on the windows console. Not that click does not modify + the interpreter in any way which means that `sys.stdout` or the + print statement or function will still not provide unicode support. + + .. versionchanged:: 2.0 + Starting with version 2.0 of Click, the echo function will work + with colorama if it's installed. + + .. versionadded:: 3.0 + The `err` parameter was added. + + .. versionchanged:: 4.0 + Added the `color` flag. + + :param message: the message to print + :param file: the file to write to (defaults to ``stdout``) + :param err: if set to true the file defaults to ``stderr`` instead of + ``stdout``. This is faster and easier than calling + :func:`get_text_stderr` yourself. + :param nl: if set to `True` (the default) a newline is printed afterwards. + :param color: controls if the terminal supports ANSI colors or not. The + default is autodetection. + """ + if file is None: + if err: + file = _default_text_stderr() + else: + file = _default_text_stdout() + + # Convert non bytes/text into the native string type. + if message is not None and not isinstance(message, echo_native_types): + message = text_type(message) + + if nl: + message = message or u"" + if isinstance(message, text_type): + message += u"\n" + else: + message += b"\n" + + # If there is a message, and we're in Python 3, and the value looks + # like bytes, we manually need to find the binary stream and write the + # message in there. This is done separately so that most stream + # types will work as you would expect. Eg: you can write to StringIO + # for other cases. + if message and not PY2 and is_bytes(message): + binary_file = _find_binary_writer(file) + if binary_file is not None: + file.flush() + binary_file.write(message) + binary_file.flush() + return + + # ANSI-style support. If there is no message or we are dealing with + # bytes nothing is happening. If we are connected to a file we want + # to strip colors. If we are on windows we either wrap the stream + # to strip the color or we use the colorama support to translate the + # ansi codes to API calls. + if message and not is_bytes(message): + color = resolve_color_default(color) + if should_strip_ansi(file, color): + message = strip_ansi(message) + elif WIN: + if auto_wrap_for_ansi is not None: + file = auto_wrap_for_ansi(file) + elif not color: + message = strip_ansi(message) + + if message: + file.write(message) + file.flush() + + +def get_binary_stream(name): + """Returns a system stream for byte processing. This essentially + returns the stream from the sys module with the given name but it + solves some compatibility issues between different Python versions. + Primarily this function is necessary for getting binary streams on + Python 3. + + :param name: the name of the stream to open. Valid names are ``'stdin'``, + ``'stdout'`` and ``'stderr'`` + """ + opener = binary_streams.get(name) + if opener is None: + raise TypeError("Unknown standard stream '{}'".format(name)) + return opener() + + +def get_text_stream(name, encoding=None, errors="strict"): + """Returns a system stream for text processing. This usually returns + a wrapped stream around a binary stream returned from + :func:`get_binary_stream` but it also can take shortcuts on Python 3 + for already correctly configured streams. + + :param name: the name of the stream to open. Valid names are ``'stdin'``, + ``'stdout'`` and ``'stderr'`` + :param encoding: overrides the detected default encoding. + :param errors: overrides the default error mode. + """ + opener = text_streams.get(name) + if opener is None: + raise TypeError("Unknown standard stream '{}'".format(name)) + return opener(encoding, errors) + + +def open_file( + filename, mode="r", encoding=None, errors="strict", lazy=False, atomic=False +): + """This is similar to how the :class:`File` works but for manual + usage. Files are opened non lazy by default. This can open regular + files as well as stdin/stdout if ``'-'`` is passed. + + If stdin/stdout is returned the stream is wrapped so that the context + manager will not close the stream accidentally. This makes it possible + to always use the function like this without having to worry to + accidentally close a standard stream:: + + with open_file(filename) as f: + ... + + .. versionadded:: 3.0 + + :param filename: the name of the file to open (or ``'-'`` for stdin/stdout). + :param mode: the mode in which to open the file. + :param encoding: the encoding to use. + :param errors: the error handling for this file. + :param lazy: can be flipped to true to open the file lazily. + :param atomic: in atomic mode writes go into a temporary file and it's + moved on close. + """ + if lazy: + return LazyFile(filename, mode, encoding, errors, atomic=atomic) + f, should_close = open_stream(filename, mode, encoding, errors, atomic=atomic) + if not should_close: + f = KeepOpenFile(f) + return f + + +def get_os_args(): + """This returns the argument part of sys.argv in the most appropriate + form for processing. What this means is that this return value is in + a format that works for Click to process but does not necessarily + correspond well to what's actually standard for the interpreter. + + On most environments the return value is ``sys.argv[:1]`` unchanged. + However if you are on Windows and running Python 2 the return value + will actually be a list of unicode strings instead because the + default behavior on that platform otherwise will not be able to + carry all possible values that sys.argv can have. + + .. versionadded:: 6.0 + """ + # We can only extract the unicode argv if sys.argv has not been + # changed since the startup of the application. + if PY2 and WIN and _initial_argv_hash == _hash_py_argv(): + return _get_windows_argv() + return sys.argv[1:] + + +def format_filename(filename, shorten=False): + """Formats a filename for user display. The main purpose of this + function is to ensure that the filename can be displayed at all. This + will decode the filename to unicode if necessary in a way that it will + not fail. Optionally, it can shorten the filename to not include the + full path to the filename. + + :param filename: formats a filename for UI display. This will also convert + the filename into unicode without failing. + :param shorten: this optionally shortens the filename to strip of the + path that leads up to it. + """ + if shorten: + filename = os.path.basename(filename) + return filename_to_ui(filename) + + +def get_app_dir(app_name, roaming=True, force_posix=False): + r"""Returns the config folder for the application. The default behavior + is to return whatever is most appropriate for the operating system. + + To give you an idea, for an app called ``"Foo Bar"``, something like + the following folders could be returned: + + Mac OS X: + ``~/Library/Application Support/Foo Bar`` + Mac OS X (POSIX): + ``~/.foo-bar`` + Unix: + ``~/.config/foo-bar`` + Unix (POSIX): + ``~/.foo-bar`` + Win XP (roaming): + ``C:\Documents and Settings\\Local Settings\Application Data\Foo Bar`` + Win XP (not roaming): + ``C:\Documents and Settings\\Application Data\Foo Bar`` + Win 7 (roaming): + ``C:\Users\\AppData\Roaming\Foo Bar`` + Win 7 (not roaming): + ``C:\Users\\AppData\Local\Foo Bar`` + + .. versionadded:: 2.0 + + :param app_name: the application name. This should be properly capitalized + and can contain whitespace. + :param roaming: controls if the folder should be roaming or not on Windows. + Has no affect otherwise. + :param force_posix: if this is set to `True` then on any POSIX system the + folder will be stored in the home folder with a leading + dot instead of the XDG config home or darwin's + application support folder. + """ + if WIN: + key = "APPDATA" if roaming else "LOCALAPPDATA" + folder = os.environ.get(key) + if folder is None: + folder = os.path.expanduser("~") + return os.path.join(folder, app_name) + if force_posix: + return os.path.join(os.path.expanduser("~/.{}".format(_posixify(app_name)))) + if sys.platform == "darwin": + return os.path.join( + os.path.expanduser("~/Library/Application Support"), app_name + ) + return os.path.join( + os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), + _posixify(app_name), + ) + + +class PacifyFlushWrapper(object): + """This wrapper is used to catch and suppress BrokenPipeErrors resulting + from ``.flush()`` being called on broken pipe during the shutdown/final-GC + of the Python interpreter. Notably ``.flush()`` is always called on + ``sys.stdout`` and ``sys.stderr``. So as to have minimal impact on any + other cleanup code, and the case where the underlying file is not a broken + pipe, all calls and attributes are proxied. + """ + + def __init__(self, wrapped): + self.wrapped = wrapped + + def flush(self): + try: + self.wrapped.flush() + except IOError as e: + import errno + + if e.errno != errno.EPIPE: + raise + + def __getattr__(self, attr): + return getattr(self.wrapped, attr) diff --git a/matteo_env/Lib/site-packages/engineio/__init__.py b/matteo_env/Lib/site-packages/engineio/__init__.py new file mode 100644 index 0000000..eb9f5fe --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/__init__.py @@ -0,0 +1,25 @@ +import sys + +from .client import Client +from .middleware import WSGIApp, Middleware +from .server import Server +if sys.version_info >= (3, 5): # pragma: no cover + from .asyncio_server import AsyncServer + from .asyncio_client import AsyncClient + from .async_drivers.asgi import ASGIApp + try: + from .async_drivers.tornado import get_tornado_handler + except ImportError: + get_tornado_handler = None +else: # pragma: no cover + AsyncServer = None + AsyncClient = None + get_tornado_handler = None + ASGIApp = None + +__version__ = '4.0.0' + +__all__ = ['__version__', 'Server', 'WSGIApp', 'Middleware', 'Client'] +if AsyncServer is not None: # pragma: no cover + __all__ += ['AsyncServer', 'ASGIApp', 'get_tornado_handler', + 'AsyncClient'], diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/__init__.py b/matteo_env/Lib/site-packages/engineio/async_drivers/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/aiohttp.py b/matteo_env/Lib/site-packages/engineio/async_drivers/aiohttp.py new file mode 100644 index 0000000..a591995 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/aiohttp.py @@ -0,0 +1,127 @@ +import asyncio +import sys +from urllib.parse import urlsplit + +from aiohttp.web import Response, WebSocketResponse + + +def create_route(app, engineio_server, engineio_endpoint): + """This function sets up the engine.io endpoint as a route for the + application. + + Note that both GET and POST requests must be hooked up on the engine.io + endpoint. + """ + app.router.add_get(engineio_endpoint, engineio_server.handle_request) + app.router.add_post(engineio_endpoint, engineio_server.handle_request) + app.router.add_route('OPTIONS', engineio_endpoint, + engineio_server.handle_request) + + +def translate_request(request): + """This function takes the arguments passed to the request handler and + uses them to generate a WSGI compatible environ dictionary. + """ + message = request._message + payload = request._payload + + uri_parts = urlsplit(message.path) + environ = { + 'wsgi.input': payload, + 'wsgi.errors': sys.stderr, + 'wsgi.version': (1, 0), + 'wsgi.async': True, + 'wsgi.multithread': False, + 'wsgi.multiprocess': False, + 'wsgi.run_once': False, + 'SERVER_SOFTWARE': 'aiohttp', + 'REQUEST_METHOD': message.method, + 'QUERY_STRING': uri_parts.query or '', + 'RAW_URI': message.path, + 'SERVER_PROTOCOL': 'HTTP/%s.%s' % message.version, + 'REMOTE_ADDR': '127.0.0.1', + 'REMOTE_PORT': '0', + 'SERVER_NAME': 'aiohttp', + 'SERVER_PORT': '0', + 'aiohttp.request': request + } + + for hdr_name, hdr_value in message.headers.items(): + hdr_name = hdr_name.upper() + if hdr_name == 'CONTENT-TYPE': + environ['CONTENT_TYPE'] = hdr_value + continue + elif hdr_name == 'CONTENT-LENGTH': + environ['CONTENT_LENGTH'] = hdr_value + continue + + key = 'HTTP_%s' % hdr_name.replace('-', '_') + if key in environ: + hdr_value = '%s,%s' % (environ[key], hdr_value) + + environ[key] = hdr_value + + environ['wsgi.url_scheme'] = environ.get('HTTP_X_FORWARDED_PROTO', 'http') + + path_info = uri_parts.path + + environ['PATH_INFO'] = path_info + environ['SCRIPT_NAME'] = '' + + return environ + + +def make_response(status, headers, payload, environ): + """This function generates an appropriate response object for this async + mode. + """ + return Response(body=payload, status=int(status.split()[0]), + headers=headers) + + +class WebSocket(object): # pragma: no cover + """ + This wrapper class provides a aiohttp WebSocket interface that is + somewhat compatible with eventlet's implementation. + """ + def __init__(self, handler): + self.handler = handler + self._sock = None + + async def __call__(self, environ): + request = environ['aiohttp.request'] + self._sock = WebSocketResponse() + await self._sock.prepare(request) + + self.environ = environ + await self.handler(self) + return self._sock + + async def close(self): + await self._sock.close() + + async def send(self, message): + if isinstance(message, bytes): + f = self._sock.send_bytes + else: + f = self._sock.send_str + if asyncio.iscoroutinefunction(f): + await f(message) + else: + f(message) + + async def wait(self): + msg = await self._sock.receive() + if not isinstance(msg.data, bytes) and \ + not isinstance(msg.data, str): + raise IOError() + return msg.data + + +_async = { + 'asyncio': True, + 'create_route': create_route, + 'translate_request': translate_request, + 'make_response': make_response, + 'websocket': WebSocket, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/asgi.py b/matteo_env/Lib/site-packages/engineio/async_drivers/asgi.py new file mode 100644 index 0000000..fe94e59 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/asgi.py @@ -0,0 +1,250 @@ +import os +import sys +import asyncio + +from engineio.static_files import get_static_file + + +class ASGIApp: + """ASGI application middleware for Engine.IO. + + This middleware dispatches traffic to an Engine.IO application. It can + also serve a list of static files to the client, or forward unrelated + HTTP traffic to another ASGI application. + + :param engineio_server: The Engine.IO server. Must be an instance of the + ``engineio.AsyncServer`` class. + :param static_files: A dictionary with static file mapping rules. See the + documentation for details on this argument. + :param other_asgi_app: A separate ASGI app that receives all other traffic. + :param engineio_path: The endpoint where the Engine.IO application should + be installed. The default value is appropriate for + most cases. + :param on_startup: function to be called on application startup; can be + coroutine + :param on_shutdown: function to be called on application shutdown; can be + coroutine + + Example usage:: + + import engineio + import uvicorn + + eio = engineio.AsyncServer() + app = engineio.ASGIApp(eio, static_files={ + '/': {'content_type': 'text/html', 'filename': 'index.html'}, + '/index.html': {'content_type': 'text/html', + 'filename': 'index.html'}, + }) + uvicorn.run(app, '127.0.0.1', 5000) + """ + def __init__(self, engineio_server, other_asgi_app=None, + static_files=None, engineio_path='engine.io', + on_startup=None, on_shutdown=None): + self.engineio_server = engineio_server + self.other_asgi_app = other_asgi_app + self.engineio_path = engineio_path.strip('/') + self.static_files = static_files or {} + self.on_startup = on_startup + self.on_shutdown = on_shutdown + + async def __call__(self, scope, receive, send): + if scope['type'] in ['http', 'websocket'] and \ + scope['path'].startswith('/{0}/'.format(self.engineio_path)): + await self.engineio_server.handle_request(scope, receive, send) + else: + static_file = get_static_file(scope['path'], self.static_files) \ + if scope['type'] == 'http' and self.static_files else None + if static_file: + await self.serve_static_file(static_file, receive, send) + elif self.other_asgi_app is not None: + await self.other_asgi_app(scope, receive, send) + elif scope['type'] == 'lifespan': + await self.lifespan(receive, send) + else: + await self.not_found(receive, send) + + async def serve_static_file(self, static_file, receive, + send): # pragma: no cover + event = await receive() + if event['type'] == 'http.request': + if os.path.exists(static_file['filename']): + with open(static_file['filename'], 'rb') as f: + payload = f.read() + await send({'type': 'http.response.start', + 'status': 200, + 'headers': [(b'Content-Type', static_file[ + 'content_type'].encode('utf-8'))]}) + await send({'type': 'http.response.body', + 'body': payload}) + else: + await self.not_found(receive, send) + + async def lifespan(self, receive, send): + while True: + event = await receive() + if event['type'] == 'lifespan.startup': + if self.on_startup: + try: + await self.on_startup() \ + if asyncio.iscoroutinefunction(self.on_startup) \ + else self.on_startup() + except: + await send({'type': 'lifespan.startup.failed'}) + return + await send({'type': 'lifespan.startup.complete'}) + elif event['type'] == 'lifespan.shutdown': + if self.on_shutdown: + try: + await self.on_shutdown() \ + if asyncio.iscoroutinefunction(self.on_shutdown) \ + else self.on_shutdown() + except: + await send({'type': 'lifespan.shutdown.failed'}) + return + await send({'type': 'lifespan.shutdown.complete'}) + return + + async def not_found(self, receive, send): + """Return a 404 Not Found error to the client.""" + await send({'type': 'http.response.start', + 'status': 404, + 'headers': [(b'Content-Type', b'text/plain')]}) + await send({'type': 'http.response.body', + 'body': b'Not Found'}) + + +async def translate_request(scope, receive, send): + class AwaitablePayload(object): # pragma: no cover + def __init__(self, payload): + self.payload = payload or b'' + + async def read(self, length=None): + if length is None: + r = self.payload + self.payload = b'' + else: + r = self.payload[:length] + self.payload = self.payload[length:] + return r + + event = await receive() + payload = b'' + if event['type'] == 'http.request': + payload += event.get('body') or b'' + while event.get('more_body'): + event = await receive() + if event['type'] == 'http.request': + payload += event.get('body') or b'' + elif event['type'] == 'websocket.connect': + pass + else: + return {} + + raw_uri = scope['path'].encode('utf-8') + if 'query_string' in scope and scope['query_string']: + raw_uri += b'?' + scope['query_string'] + environ = { + 'wsgi.input': AwaitablePayload(payload), + 'wsgi.errors': sys.stderr, + 'wsgi.version': (1, 0), + 'wsgi.async': True, + 'wsgi.multithread': False, + 'wsgi.multiprocess': False, + 'wsgi.run_once': False, + 'SERVER_SOFTWARE': 'asgi', + 'REQUEST_METHOD': scope.get('method', 'GET'), + 'PATH_INFO': scope['path'], + 'QUERY_STRING': scope.get('query_string', b'').decode('utf-8'), + 'RAW_URI': raw_uri.decode('utf-8'), + 'SCRIPT_NAME': '', + 'SERVER_PROTOCOL': 'HTTP/1.1', + 'REMOTE_ADDR': '127.0.0.1', + 'REMOTE_PORT': '0', + 'SERVER_NAME': 'asgi', + 'SERVER_PORT': '0', + 'asgi.receive': receive, + 'asgi.send': send, + 'asgi.scope': scope, + } + + for hdr_name, hdr_value in scope['headers']: + hdr_name = hdr_name.upper().decode('utf-8') + hdr_value = hdr_value.decode('utf-8') + if hdr_name == 'CONTENT-TYPE': + environ['CONTENT_TYPE'] = hdr_value + continue + elif hdr_name == 'CONTENT-LENGTH': + environ['CONTENT_LENGTH'] = hdr_value + continue + + key = 'HTTP_%s' % hdr_name.replace('-', '_') + if key in environ: + hdr_value = '%s,%s' % (environ[key], hdr_value) + + environ[key] = hdr_value + + environ['wsgi.url_scheme'] = environ.get('HTTP_X_FORWARDED_PROTO', 'http') + return environ + + +async def make_response(status, headers, payload, environ): + headers = [(h[0].encode('utf-8'), h[1].encode('utf-8')) for h in headers] + if 'HTTP_SEC_WEBSOCKET_VERSION' in environ: + if status.startswith('200 '): + await environ['asgi.send']({'type': 'websocket.accept', + 'headers': headers}) + else: + await environ['asgi.send']({'type': 'websocket.close'}) + return + + await environ['asgi.send']({'type': 'http.response.start', + 'status': int(status.split(' ')[0]), + 'headers': headers}) + await environ['asgi.send']({'type': 'http.response.body', + 'body': payload}) + + +class WebSocket(object): # pragma: no cover + """ + This wrapper class provides an asgi WebSocket interface that is + somewhat compatible with eventlet's implementation. + """ + def __init__(self, handler): + self.handler = handler + self.asgi_receive = None + self.asgi_send = None + + async def __call__(self, environ): + self.asgi_receive = environ['asgi.receive'] + self.asgi_send = environ['asgi.send'] + await self.asgi_send({'type': 'websocket.accept'}) + await self.handler(self) + + async def close(self): + await self.asgi_send({'type': 'websocket.close'}) + + async def send(self, message): + msg_bytes = None + msg_text = None + if isinstance(message, bytes): + msg_bytes = message + else: + msg_text = message + await self.asgi_send({'type': 'websocket.send', + 'bytes': msg_bytes, + 'text': msg_text}) + + async def wait(self): + event = await self.asgi_receive() + if event['type'] != 'websocket.receive': + raise IOError() + return event.get('bytes') or event.get('text') + + +_async = { + 'asyncio': True, + 'translate_request': translate_request, + 'make_response': make_response, + 'websocket': WebSocket, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/eventlet.py b/matteo_env/Lib/site-packages/engineio/async_drivers/eventlet.py new file mode 100644 index 0000000..9be3797 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/eventlet.py @@ -0,0 +1,30 @@ +from __future__ import absolute_import + +from eventlet.green.threading import Thread, Event +from eventlet import queue +from eventlet import sleep +from eventlet.websocket import WebSocketWSGI as _WebSocketWSGI + + +class WebSocketWSGI(_WebSocketWSGI): + def __init__(self, *args, **kwargs): + super(WebSocketWSGI, self).__init__(*args, **kwargs) + self._sock = None + + def __call__(self, environ, start_response): + if 'eventlet.input' not in environ: + raise RuntimeError('You need to use the eventlet server. ' + 'See the Deployment section of the ' + 'documentation for more information.') + self._sock = environ['eventlet.input'].get_socket() + return super(WebSocketWSGI, self).__call__(environ, start_response) + + +_async = { + 'thread': Thread, + 'queue': queue.Queue, + 'queue_empty': queue.Empty, + 'event': Event, + 'websocket': WebSocketWSGI, + 'sleep': sleep, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/gevent.py b/matteo_env/Lib/site-packages/engineio/async_drivers/gevent.py new file mode 100644 index 0000000..024dd0a --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/gevent.py @@ -0,0 +1,63 @@ +from __future__ import absolute_import + +import gevent +from gevent import queue +from gevent.event import Event +try: + import geventwebsocket # noqa + _websocket_available = True +except ImportError: + _websocket_available = False + + +class Thread(gevent.Greenlet): # pragma: no cover + """ + This wrapper class provides gevent Greenlet interface that is compatible + with the standard library's Thread class. + """ + def __init__(self, target, args=[], kwargs={}): + super(Thread, self).__init__(target, *args, **kwargs) + + def _run(self): + return self.run() + + +class WebSocketWSGI(object): # pragma: no cover + """ + This wrapper class provides a gevent WebSocket interface that is + compatible with eventlet's implementation. + """ + def __init__(self, app): + self.app = app + + def __call__(self, environ, start_response): + if 'wsgi.websocket' not in environ: + raise RuntimeError('You need to use the gevent-websocket server. ' + 'See the Deployment section of the ' + 'documentation for more information.') + self._sock = environ['wsgi.websocket'] + self.environ = environ + self.version = self._sock.version + self.path = self._sock.path + self.origin = self._sock.origin + self.protocol = self._sock.protocol + return self.app(self) + + def close(self): + return self._sock.close() + + def send(self, message): + return self._sock.send(message) + + def wait(self): + return self._sock.receive() + + +_async = { + 'thread': Thread, + 'queue': queue.JoinableQueue, + 'queue_empty': queue.Empty, + 'event': Event, + 'websocket': WebSocketWSGI if _websocket_available else None, + 'sleep': gevent.sleep, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/gevent_uwsgi.py b/matteo_env/Lib/site-packages/engineio/async_drivers/gevent_uwsgi.py new file mode 100644 index 0000000..bdee812 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/gevent_uwsgi.py @@ -0,0 +1,154 @@ +from __future__ import absolute_import + +import gevent +from gevent import queue +from gevent.event import Event +import uwsgi +_websocket_available = hasattr(uwsgi, 'websocket_handshake') + + +class Thread(gevent.Greenlet): # pragma: no cover + """ + This wrapper class provides gevent Greenlet interface that is compatible + with the standard library's Thread class. + """ + def __init__(self, target, args=[], kwargs={}): + super(Thread, self).__init__(target, *args, **kwargs) + + def _run(self): + return self.run() + + +class uWSGIWebSocket(object): # pragma: no cover + """ + This wrapper class provides a uWSGI WebSocket interface that is + compatible with eventlet's implementation. + """ + def __init__(self, app): + self.app = app + self._sock = None + + def __call__(self, environ, start_response): + self._sock = uwsgi.connection_fd() + self.environ = environ + + uwsgi.websocket_handshake() + + self._req_ctx = None + if hasattr(uwsgi, 'request_context'): + # uWSGI >= 2.1.x with support for api access across-greenlets + self._req_ctx = uwsgi.request_context() + else: + # use event and queue for sending messages + from gevent.event import Event + from gevent.queue import Queue + from gevent.select import select + self._event = Event() + self._send_queue = Queue() + + # spawn a select greenlet + def select_greenlet_runner(fd, event): + """Sets event when data becomes available to read on fd.""" + while True: + event.set() + try: + select([fd], [], [])[0] + except ValueError: + break + self._select_greenlet = gevent.spawn( + select_greenlet_runner, + self._sock, + self._event) + + self.app(self) + + def close(self): + """Disconnects uWSGI from the client.""" + uwsgi.disconnect() + if self._req_ctx is None: + # better kill it here in case wait() is not called again + self._select_greenlet.kill() + self._event.set() + + def _send(self, msg): + """Transmits message either in binary or UTF-8 text mode, + depending on its type.""" + if isinstance(msg, bytes): + method = uwsgi.websocket_send_binary + else: + method = uwsgi.websocket_send + if self._req_ctx is not None: + method(msg, request_context=self._req_ctx) + else: + method(msg) + + def _decode_received(self, msg): + """Returns either bytes or str, depending on message type.""" + if not isinstance(msg, bytes): + # already decoded - do nothing + return msg + # only decode from utf-8 if message is not binary data + type = ord(msg[0:1]) + if type >= 48: # no binary + return msg.decode('utf-8') + # binary message, don't try to decode + return msg + + def send(self, msg): + """Queues a message for sending. Real transmission is done in + wait method. + Sends directly if uWSGI version is new enough.""" + if self._req_ctx is not None: + self._send(msg) + else: + self._send_queue.put(msg) + self._event.set() + + def wait(self): + """Waits and returns received messages. + If running in compatibility mode for older uWSGI versions, + it also sends messages that have been queued by send(). + A return value of None means that connection was closed. + This must be called repeatedly. For uWSGI < 2.1.x it must + be called from the main greenlet.""" + while True: + if self._req_ctx is not None: + try: + msg = uwsgi.websocket_recv(request_context=self._req_ctx) + except IOError: # connection closed + return None + return self._decode_received(msg) + else: + # we wake up at least every 3 seconds to let uWSGI + # do its ping/ponging + event_set = self._event.wait(timeout=3) + if event_set: + self._event.clear() + # maybe there is something to send + msgs = [] + while True: + try: + msgs.append(self._send_queue.get(block=False)) + except gevent.queue.Empty: + break + for msg in msgs: + self._send(msg) + # maybe there is something to receive, if not, at least + # ensure uWSGI does its ping/ponging + try: + msg = uwsgi.websocket_recv_nb() + except IOError: # connection closed + self._select_greenlet.kill() + return None + if msg: # message available + return self._decode_received(msg) + + +_async = { + 'thread': Thread, + 'queue': queue.JoinableQueue, + 'queue_empty': queue.Empty, + 'event': Event, + 'websocket': uWSGIWebSocket if _websocket_available else None, + 'sleep': gevent.sleep, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/sanic.py b/matteo_env/Lib/site-packages/engineio/async_drivers/sanic.py new file mode 100644 index 0000000..2400224 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/sanic.py @@ -0,0 +1,143 @@ +import sys +from urllib.parse import urlsplit + +try: # pragma: no cover + from sanic.response import HTTPResponse + from sanic.websocket import WebSocketProtocol +except ImportError: + HTTPResponse = None + WebSocketProtocol = None + + +def create_route(app, engineio_server, engineio_endpoint): # pragma: no cover + """This function sets up the engine.io endpoint as a route for the + application. + + Note that both GET and POST requests must be hooked up on the engine.io + endpoint. + """ + app.add_route(engineio_server.handle_request, engineio_endpoint, + methods=['GET', 'POST', 'OPTIONS']) + try: + app.enable_websocket() + except AttributeError: + # ignore, this version does not support websocket + pass + + +def translate_request(request): # pragma: no cover + """This function takes the arguments passed to the request handler and + uses them to generate a WSGI compatible environ dictionary. + """ + class AwaitablePayload(object): + def __init__(self, payload): + self.payload = payload or b'' + + async def read(self, length=None): + if length is None: + r = self.payload + self.payload = b'' + else: + r = self.payload[:length] + self.payload = self.payload[length:] + return r + + uri_parts = urlsplit(request.url) + environ = { + 'wsgi.input': AwaitablePayload(request.body), + 'wsgi.errors': sys.stderr, + 'wsgi.version': (1, 0), + 'wsgi.async': True, + 'wsgi.multithread': False, + 'wsgi.multiprocess': False, + 'wsgi.run_once': False, + 'SERVER_SOFTWARE': 'sanic', + 'REQUEST_METHOD': request.method, + 'QUERY_STRING': uri_parts.query or '', + 'RAW_URI': request.url, + 'SERVER_PROTOCOL': 'HTTP/' + request.version, + 'REMOTE_ADDR': '127.0.0.1', + 'REMOTE_PORT': '0', + 'SERVER_NAME': 'sanic', + 'SERVER_PORT': '0', + 'sanic.request': request + } + + for hdr_name, hdr_value in request.headers.items(): + hdr_name = hdr_name.upper() + if hdr_name == 'CONTENT-TYPE': + environ['CONTENT_TYPE'] = hdr_value + continue + elif hdr_name == 'CONTENT-LENGTH': + environ['CONTENT_LENGTH'] = hdr_value + continue + + key = 'HTTP_%s' % hdr_name.replace('-', '_') + if key in environ: + hdr_value = '%s,%s' % (environ[key], hdr_value) + + environ[key] = hdr_value + + environ['wsgi.url_scheme'] = environ.get('HTTP_X_FORWARDED_PROTO', 'http') + + path_info = uri_parts.path + + environ['PATH_INFO'] = path_info + environ['SCRIPT_NAME'] = '' + + return environ + + +def make_response(status, headers, payload, environ): # pragma: no cover + """This function generates an appropriate response object for this async + mode. + """ + headers_dict = {} + content_type = None + for h in headers: + if h[0].lower() == 'content-type': + content_type = h[1] + else: + headers_dict[h[0]] = h[1] + return HTTPResponse(body_bytes=payload, content_type=content_type, + status=int(status.split()[0]), headers=headers_dict) + + +class WebSocket(object): # pragma: no cover + """ + This wrapper class provides a sanic WebSocket interface that is + somewhat compatible with eventlet's implementation. + """ + def __init__(self, handler): + self.handler = handler + self._sock = None + + async def __call__(self, environ): + request = environ['sanic.request'] + protocol = request.transport.get_protocol() + self._sock = await protocol.websocket_handshake(request) + + self.environ = environ + await self.handler(self) + + async def close(self): + await self._sock.close() + + async def send(self, message): + await self._sock.send(message) + + async def wait(self): + data = await self._sock.recv() + if not isinstance(data, bytes) and \ + not isinstance(data, str): + raise IOError() + return data + + +_async = { + 'asyncio': True, + 'create_route': create_route, + 'translate_request': translate_request, + 'make_response': make_response, + 'websocket': WebSocket if WebSocketProtocol else None, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/threading.py b/matteo_env/Lib/site-packages/engineio/async_drivers/threading.py new file mode 100644 index 0000000..9b53756 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/threading.py @@ -0,0 +1,17 @@ +from __future__ import absolute_import +import threading +import time + +try: + import queue +except ImportError: # pragma: no cover + import Queue as queue + +_async = { + 'thread': threading.Thread, + 'queue': queue.Queue, + 'queue_empty': queue.Empty, + 'event': threading.Event, + 'websocket': None, + 'sleep': time.sleep, +} diff --git a/matteo_env/Lib/site-packages/engineio/async_drivers/tornado.py b/matteo_env/Lib/site-packages/engineio/async_drivers/tornado.py new file mode 100644 index 0000000..eb1c4de --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/async_drivers/tornado.py @@ -0,0 +1,182 @@ +import asyncio +import sys +from urllib.parse import urlsplit +from .. import exceptions + +import tornado.web +import tornado.websocket + + +def get_tornado_handler(engineio_server): + class Handler(tornado.websocket.WebSocketHandler): # pragma: no cover + def __init__(self, *args, **kwargs): + super().__init__(*args, **kwargs) + if isinstance(engineio_server.cors_allowed_origins, str): + if engineio_server.cors_allowed_origins == '*': + self.allowed_origins = None + else: + self.allowed_origins = [ + engineio_server.cors_allowed_origins] + else: + self.allowed_origins = engineio_server.cors_allowed_origins + self.receive_queue = asyncio.Queue() + + async def get(self, *args, **kwargs): + if self.request.headers.get('Upgrade', '').lower() == 'websocket': + ret = super().get(*args, **kwargs) + if asyncio.iscoroutine(ret): + await ret + else: + await engineio_server.handle_request(self) + + async def open(self, *args, **kwargs): + # this is the handler for the websocket request + asyncio.ensure_future(engineio_server.handle_request(self)) + + async def post(self, *args, **kwargs): + await engineio_server.handle_request(self) + + async def options(self, *args, **kwargs): + await engineio_server.handle_request(self) + + async def on_message(self, message): + await self.receive_queue.put(message) + + async def get_next_message(self): + return await self.receive_queue.get() + + def on_close(self): + self.receive_queue.put_nowait(None) + + def check_origin(self, origin): + if self.allowed_origins is None or origin in self.allowed_origins: + return True + return super().check_origin(origin) + + def get_compression_options(self): + # enable compression + return {} + + return Handler + + +def translate_request(handler): + """This function takes the arguments passed to the request handler and + uses them to generate a WSGI compatible environ dictionary. + """ + class AwaitablePayload(object): + def __init__(self, payload): + self.payload = payload or b'' + + async def read(self, length=None): + if length is None: + r = self.payload + self.payload = b'' + else: + r = self.payload[:length] + self.payload = self.payload[length:] + return r + + payload = handler.request.body + + uri_parts = urlsplit(handler.request.path) + full_uri = handler.request.path + if handler.request.query: # pragma: no cover + full_uri += '?' + handler.request.query + environ = { + 'wsgi.input': AwaitablePayload(payload), + 'wsgi.errors': sys.stderr, + 'wsgi.version': (1, 0), + 'wsgi.async': True, + 'wsgi.multithread': False, + 'wsgi.multiprocess': False, + 'wsgi.run_once': False, + 'SERVER_SOFTWARE': 'aiohttp', + 'REQUEST_METHOD': handler.request.method, + 'QUERY_STRING': handler.request.query or '', + 'RAW_URI': full_uri, + 'SERVER_PROTOCOL': 'HTTP/%s' % handler.request.version, + 'REMOTE_ADDR': '127.0.0.1', + 'REMOTE_PORT': '0', + 'SERVER_NAME': 'aiohttp', + 'SERVER_PORT': '0', + 'tornado.handler': handler + } + + for hdr_name, hdr_value in handler.request.headers.items(): + hdr_name = hdr_name.upper() + if hdr_name == 'CONTENT-TYPE': + environ['CONTENT_TYPE'] = hdr_value + continue + elif hdr_name == 'CONTENT-LENGTH': + environ['CONTENT_LENGTH'] = hdr_value + continue + + key = 'HTTP_%s' % hdr_name.replace('-', '_') + environ[key] = hdr_value + + environ['wsgi.url_scheme'] = environ.get('HTTP_X_FORWARDED_PROTO', 'http') + + path_info = uri_parts.path + + environ['PATH_INFO'] = path_info + environ['SCRIPT_NAME'] = '' + + return environ + + +def make_response(status, headers, payload, environ): + """This function generates an appropriate response object for this async + mode. + """ + tornado_handler = environ['tornado.handler'] + try: + tornado_handler.set_status(int(status.split()[0])) + except RuntimeError: # pragma: no cover + # for websocket connections Tornado does not accept a response, since + # it already emitted the 101 status code + return + for header, value in headers: + tornado_handler.set_header(header, value) + tornado_handler.write(payload) + tornado_handler.finish() + + +class WebSocket(object): # pragma: no cover + """ + This wrapper class provides a tornado WebSocket interface that is + somewhat compatible with eventlet's implementation. + """ + def __init__(self, handler): + self.handler = handler + self.tornado_handler = None + + async def __call__(self, environ): + self.tornado_handler = environ['tornado.handler'] + self.environ = environ + await self.handler(self) + + async def close(self): + self.tornado_handler.close() + + async def send(self, message): + try: + self.tornado_handler.write_message( + message, binary=isinstance(message, bytes)) + except tornado.websocket.WebSocketClosedError: + raise exceptions.EngineIOError() + + async def wait(self): + msg = await self.tornado_handler.get_next_message() + if not isinstance(msg, bytes) and \ + not isinstance(msg, str): + raise IOError() + return msg + + +_async = { + 'asyncio': True, + 'translate_request': translate_request, + 'make_response': make_response, + 'websocket': WebSocket, +} diff --git a/matteo_env/Lib/site-packages/engineio/asyncio_client.py b/matteo_env/Lib/site-packages/engineio/asyncio_client.py new file mode 100644 index 0000000..57691d6 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/asyncio_client.py @@ -0,0 +1,608 @@ +import asyncio +import signal +import ssl +import threading + +try: + import aiohttp +except ImportError: # pragma: no cover + aiohttp = None + +from . import client +from . import exceptions +from . import packet +from . import payload + +async_signal_handler_set = False + + +def async_signal_handler(): + """SIGINT handler. + + Disconnect all active async clients. + """ + async def _handler(): + asyncio.get_event_loop().stop() + for c in client.connected_clients[:]: + if c.is_asyncio_based(): + await c.disconnect() + else: # pragma: no cover + pass + + asyncio.ensure_future(_handler()) + + +class AsyncClient(client.Client): + """An Engine.IO client for asyncio. + + This class implements a fully compliant Engine.IO web client with support + for websocket and long-polling transports, compatible with the asyncio + framework on Python 3.5 or newer. + + :param logger: To enable logging set to ``True`` or pass a logger object to + use. To disable logging set to ``False``. The default is + ``False``. Note that fatal errors are logged even when + ``logger`` is ``False``. + :param json: An alternative json module to use for encoding and decoding + packets. Custom json modules must have ``dumps`` and ``loads`` + functions that are compatible with the standard library + versions. + :param request_timeout: A timeout in seconds for requests. The default is + 5 seconds. + :param http_session: an initialized ``aiohttp.ClientSession`` object to be + used when sending requests to the server. Use it if + you need to add special client options such as proxy + servers, SSL certificates, etc. + :param ssl_verify: ``True`` to verify SSL certificates, or ``False`` to + skip SSL certificate verification, allowing + connections to servers with self signed certificates. + The default is ``True``. + """ + def is_asyncio_based(self): + return True + + async def connect(self, url, headers=None, transports=None, + engineio_path='engine.io'): + """Connect to an Engine.IO server. + + :param url: The URL of the Engine.IO server. It can include custom + query string parameters if required by the server. + :param headers: A dictionary with custom headers to send with the + connection request. + :param transports: The list of allowed transports. Valid transports + are ``'polling'`` and ``'websocket'``. If not + given, the polling transport is connected first, + then an upgrade to websocket is attempted. + :param engineio_path: The endpoint where the Engine.IO server is + installed. The default value is appropriate for + most cases. + + Note: this method is a coroutine. + + Example usage:: + + eio = engineio.Client() + await eio.connect('http://localhost:5000') + """ + global async_signal_handler_set + if not async_signal_handler_set and \ + threading.current_thread() == threading.main_thread(): + + try: + asyncio.get_event_loop().add_signal_handler( + signal.SIGINT, async_signal_handler) + async_signal_handler_set = True + except NotImplementedError: # pragma: no cover + self.logger.warning('Signal handler is unsupported') + + if self.state != 'disconnected': + raise ValueError('Client is not in a disconnected state') + valid_transports = ['polling', 'websocket'] + if transports is not None: + if isinstance(transports, str): + transports = [transports] + transports = [transport for transport in transports + if transport in valid_transports] + if not transports: + raise ValueError('No valid transports provided') + self.transports = transports or valid_transports + self.queue = self.create_queue() + return await getattr(self, '_connect_' + self.transports[0])( + url, headers or {}, engineio_path) + + async def wait(self): + """Wait until the connection with the server ends. + + Client applications can use this function to block the main thread + during the life of the connection. + + Note: this method is a coroutine. + """ + if self.read_loop_task: + await self.read_loop_task + + async def send(self, data): + """Send a message to a client. + + :param data: The data to send to the client. Data can be of type + ``str``, ``bytes``, ``list`` or ``dict``. If a ``list`` + or ``dict``, the data will be serialized as JSON. + + Note: this method is a coroutine. + """ + await self._send_packet(packet.Packet(packet.MESSAGE, data=data)) + + async def disconnect(self, abort=False): + """Disconnect from the server. + + :param abort: If set to ``True``, do not wait for background tasks + associated with the connection to end. + + Note: this method is a coroutine. + """ + if self.state == 'connected': + await self._send_packet(packet.Packet(packet.CLOSE)) + await self.queue.put(None) + self.state = 'disconnecting' + await self._trigger_event('disconnect', run_async=False) + if self.current_transport == 'websocket': + await self.ws.close() + if not abort: + await self.read_loop_task + self.state = 'disconnected' + try: + client.connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + + def start_background_task(self, target, *args, **kwargs): + """Start a background task. + + This is a utility function that applications can use to start a + background task. + + :param target: the target function to execute. + :param args: arguments to pass to the function. + :param kwargs: keyword arguments to pass to the function. + + This function returns an object compatible with the `Thread` class in + the Python standard library. The `start()` method on this object is + already called by this function. + + Note: this method is a coroutine. + """ + return asyncio.ensure_future(target(*args, **kwargs)) + + async def sleep(self, seconds=0): + """Sleep for the requested amount of time. + + Note: this method is a coroutine. + """ + return await asyncio.sleep(seconds) + + def create_queue(self): + """Create a queue object.""" + q = asyncio.Queue() + q.Empty = asyncio.QueueEmpty + return q + + def create_event(self): + """Create an event object.""" + return asyncio.Event() + + def _reset(self): + if self.http: # pragma: no cover + asyncio.ensure_future(self.http.close()) + super()._reset() + + async def _connect_polling(self, url, headers, engineio_path): + """Establish a long-polling connection to the Engine.IO server.""" + if aiohttp is None: # pragma: no cover + self.logger.error('aiohttp not installed -- cannot make HTTP ' + 'requests!') + return + self.base_url = self._get_engineio_url(url, engineio_path, 'polling') + self.logger.info('Attempting polling connection to ' + self.base_url) + r = await self._send_request( + 'GET', self.base_url + self._get_url_timestamp(), headers=headers, + timeout=self.request_timeout) + if r is None: + self._reset() + raise exceptions.ConnectionError( + 'Connection refused by the server') + if r.status < 200 or r.status >= 300: + self._reset() + try: + arg = await r.json() + except aiohttp.ClientError: + arg = None + raise exceptions.ConnectionError( + 'Unexpected status code {} in server response'.format( + r.status), arg) + try: + p = payload.Payload(encoded_payload=(await r.read()).decode( + 'utf-8')) + except ValueError: + raise exceptions.ConnectionError( + 'Unexpected response from server') from None + open_packet = p.packets[0] + if open_packet.packet_type != packet.OPEN: + raise exceptions.ConnectionError( + 'OPEN packet not returned by server') + self.logger.info( + 'Polling connection accepted with ' + str(open_packet.data)) + self.sid = open_packet.data['sid'] + self.upgrades = open_packet.data['upgrades'] + self.ping_interval = int(open_packet.data['pingInterval']) / 1000.0 + self.ping_timeout = int(open_packet.data['pingTimeout']) / 1000.0 + self.current_transport = 'polling' + self.base_url += '&sid=' + self.sid + + self.state = 'connected' + client.connected_clients.append(self) + await self._trigger_event('connect', run_async=False) + + for pkt in p.packets[1:]: + await self._receive_packet(pkt) + + if 'websocket' in self.upgrades and 'websocket' in self.transports: + # attempt to upgrade to websocket + if await self._connect_websocket(url, headers, engineio_path): + # upgrade to websocket succeeded, we're done here + return + + self.write_loop_task = self.start_background_task(self._write_loop) + self.read_loop_task = self.start_background_task( + self._read_loop_polling) + + async def _connect_websocket(self, url, headers, engineio_path): + """Establish or upgrade to a WebSocket connection with the server.""" + if aiohttp is None: # pragma: no cover + self.logger.error('aiohttp package not installed') + return False + websocket_url = self._get_engineio_url(url, engineio_path, + 'websocket') + if self.sid: + self.logger.info( + 'Attempting WebSocket upgrade to ' + websocket_url) + upgrade = True + websocket_url += '&sid=' + self.sid + else: + upgrade = False + self.base_url = websocket_url + self.logger.info( + 'Attempting WebSocket connection to ' + websocket_url) + + if self.http is None or self.http.closed: # pragma: no cover + self.http = aiohttp.ClientSession() + + # extract any new cookies passed in a header so that they can also be + # sent the the WebSocket route + cookies = {} + for header, value in headers.items(): + if header.lower() == 'cookie': + cookies = dict( + [cookie.split('=', 1) for cookie in value.split('; ')]) + del headers[header] + break + self.http.cookie_jar.update_cookies(cookies) + + try: + if not self.ssl_verify: + ssl_context = ssl.create_default_context() + ssl_context.check_hostname = False + ssl_context.verify_mode = ssl.CERT_NONE + ws = await self.http.ws_connect( + websocket_url + self._get_url_timestamp(), + headers=headers, ssl=ssl_context) + else: + ws = await self.http.ws_connect( + websocket_url + self._get_url_timestamp(), + headers=headers) + except (aiohttp.client_exceptions.WSServerHandshakeError, + aiohttp.client_exceptions.ServerConnectionError, + aiohttp.client_exceptions.ClientConnectionError): + if upgrade: + self.logger.warning( + 'WebSocket upgrade failed: connection error') + return False + else: + raise exceptions.ConnectionError('Connection error') + if upgrade: + p = packet.Packet(packet.PING, data='probe').encode() + try: + await ws.send_str(p) + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected send exception: %s', + str(e)) + return False + try: + p = (await ws.receive()).data + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected recv exception: %s', + str(e)) + return False + pkt = packet.Packet(encoded_packet=p) + if pkt.packet_type != packet.PONG or pkt.data != 'probe': + self.logger.warning( + 'WebSocket upgrade failed: no PONG packet') + return False + p = packet.Packet(packet.UPGRADE).encode() + try: + await ws.send_str(p) + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected send exception: %s', + str(e)) + return False + self.current_transport = 'websocket' + self.logger.info('WebSocket upgrade was successful') + else: + try: + p = (await ws.receive()).data + except Exception as e: # pragma: no cover + raise exceptions.ConnectionError( + 'Unexpected recv exception: ' + str(e)) + open_packet = packet.Packet(encoded_packet=p) + if open_packet.packet_type != packet.OPEN: + raise exceptions.ConnectionError('no OPEN packet') + self.logger.info( + 'WebSocket connection accepted with ' + str(open_packet.data)) + self.sid = open_packet.data['sid'] + self.upgrades = open_packet.data['upgrades'] + self.ping_interval = int(open_packet.data['pingInterval']) / 1000.0 + self.ping_timeout = int(open_packet.data['pingTimeout']) / 1000.0 + self.current_transport = 'websocket' + + self.state = 'connected' + client.connected_clients.append(self) + await self._trigger_event('connect', run_async=False) + + self.ws = ws + self.write_loop_task = self.start_background_task(self._write_loop) + self.read_loop_task = self.start_background_task( + self._read_loop_websocket) + return True + + async def _receive_packet(self, pkt): + """Handle incoming packets from the server.""" + packet_name = packet.packet_names[pkt.packet_type] \ + if pkt.packet_type < len(packet.packet_names) else 'UNKNOWN' + self.logger.info( + 'Received packet %s data %s', packet_name, + pkt.data if not isinstance(pkt.data, bytes) else '') + if pkt.packet_type == packet.MESSAGE: + await self._trigger_event('message', pkt.data, run_async=True) + elif pkt.packet_type == packet.PING: + await self._send_packet(packet.Packet(packet.PONG, pkt.data)) + elif pkt.packet_type == packet.CLOSE: + await self.disconnect(abort=True) + elif pkt.packet_type == packet.NOOP: + pass + else: + self.logger.error('Received unexpected packet of type %s', + pkt.packet_type) + + async def _send_packet(self, pkt): + """Queue a packet to be sent to the server.""" + if self.state != 'connected': + return + await self.queue.put(pkt) + self.logger.info( + 'Sending packet %s data %s', + packet.packet_names[pkt.packet_type], + pkt.data if not isinstance(pkt.data, bytes) else '') + + async def _send_request( + self, method, url, headers=None, body=None, + timeout=None): # pragma: no cover + if self.http is None or self.http.closed: + self.http = aiohttp.ClientSession() + http_method = getattr(self.http, method.lower()) + + try: + if not self.ssl_verify: + return await http_method( + url, headers=headers, data=body, + timeout=aiohttp.ClientTimeout(total=timeout), ssl=False) + else: + return await http_method( + url, headers=headers, data=body, + timeout=aiohttp.ClientTimeout(total=timeout)) + + except (aiohttp.ClientError, asyncio.TimeoutError) as exc: + self.logger.info('HTTP %s request to %s failed with error %s.', + method, url, exc) + + async def _trigger_event(self, event, *args, **kwargs): + """Invoke an event handler.""" + run_async = kwargs.pop('run_async', False) + ret = None + if event in self.handlers: + if asyncio.iscoroutinefunction(self.handlers[event]) is True: + if run_async: + return self.start_background_task(self.handlers[event], + *args) + else: + try: + ret = await self.handlers[event](*args) + except asyncio.CancelledError: # pragma: no cover + pass + except: + self.logger.exception(event + ' async handler error') + if event == 'connect': + # if connect handler raised error we reject the + # connection + return False + else: + if run_async: + async def async_handler(): + return self.handlers[event](*args) + + return self.start_background_task(async_handler) + else: + try: + ret = self.handlers[event](*args) + except: + self.logger.exception(event + ' handler error') + if event == 'connect': + # if connect handler raised error we reject the + # connection + return False + return ret + + async def _read_loop_polling(self): + """Read packets by polling the Engine.IO server.""" + while self.state == 'connected': + self.logger.info( + 'Sending polling GET request to ' + self.base_url) + r = await self._send_request( + 'GET', self.base_url + self._get_url_timestamp(), + timeout=max(self.ping_interval, self.ping_timeout) + 5) + if r is None: + self.logger.warning( + 'Connection refused by the server, aborting') + await self.queue.put(None) + break + if r.status < 200 or r.status >= 300: + self.logger.warning('Unexpected status code %s in server ' + 'response, aborting', r.status) + await self.queue.put(None) + break + try: + p = payload.Payload(encoded_payload=(await r.read()).decode( + 'utf-8')) + except ValueError: + self.logger.warning( + 'Unexpected packet from server, aborting') + await self.queue.put(None) + break + for pkt in p.packets: + await self._receive_packet(pkt) + + self.logger.info('Waiting for write loop task to end') + await self.write_loop_task + if self.state == 'connected': + await self._trigger_event('disconnect', run_async=False) + try: + client.connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + self.logger.info('Exiting read loop task') + + async def _read_loop_websocket(self): + """Read packets from the Engine.IO WebSocket connection.""" + while self.state == 'connected': + p = None + try: + p = await asyncio.wait_for( + self.ws.receive(), + timeout=self.ping_interval + self.ping_timeout) + p = p.data + if p is None: # pragma: no cover + break # the connection is broken + except asyncio.TimeoutError: + self.logger.warning( + 'Server has stopped communicating, aborting') + await self.queue.put(None) + break + except aiohttp.client_exceptions.ServerDisconnectedError: + self.logger.info( + 'Read loop: WebSocket connection was closed, aborting') + await self.queue.put(None) + break + except Exception as e: + self.logger.info( + 'Unexpected error receiving packet: "%s", aborting', + str(e)) + await self.queue.put(None) + break + try: + pkt = packet.Packet(encoded_packet=p) + except Exception as e: # pragma: no cover + self.logger.info( + 'Unexpected error decoding packet: "%s", aborting', str(e)) + await self.queue.put(None) + break + await self._receive_packet(pkt) + + self.logger.info('Waiting for write loop task to end') + await self.write_loop_task + if self.state == 'connected': + await self._trigger_event('disconnect', run_async=False) + try: + client.connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + self.logger.info('Exiting read loop task') + + async def _write_loop(self): + """This background task sends packages to the server as they are + pushed to the send queue. + """ + while self.state == 'connected': + # to simplify the timeout handling, use the maximum of the + # ping interval and ping timeout as timeout, with an extra 5 + # seconds grace period + timeout = max(self.ping_interval, self.ping_timeout) + 5 + packets = None + try: + packets = [await asyncio.wait_for(self.queue.get(), timeout)] + except (self.queue.Empty, asyncio.TimeoutError, + asyncio.CancelledError): + self.logger.error('packet queue is empty, aborting') + break + if packets == [None]: + self.queue.task_done() + packets = [] + else: + while True: + try: + packets.append(self.queue.get_nowait()) + except self.queue.Empty: + break + if packets[-1] is None: + packets = packets[:-1] + self.queue.task_done() + break + if not packets: + # empty packet list returned -> connection closed + break + if self.current_transport == 'polling': + p = payload.Payload(packets=packets) + r = await self._send_request( + 'POST', self.base_url, body=p.encode(), + headers={'Content-Type': 'application/octet-stream'}, + timeout=self.request_timeout) + for pkt in packets: + self.queue.task_done() + if r is None: + self.logger.warning( + 'Connection refused by the server, aborting') + break + if r.status < 200 or r.status >= 300: + self.logger.warning('Unexpected status code %s in server ' + 'response, aborting', r.status) + self._reset() + break + else: + # websocket + try: + for pkt in packets: + if pkt.binary: + await self.ws.send_bytes(pkt.encode()) + else: + await self.ws.send_str(pkt.encode()) + self.queue.task_done() + except (aiohttp.client_exceptions.ServerDisconnectedError, + BrokenPipeError, OSError): + self.logger.info( + 'Write loop: WebSocket connection was closed, ' + 'aborting') + break + self.logger.info('Exiting write loop task') diff --git a/matteo_env/Lib/site-packages/engineio/asyncio_server.py b/matteo_env/Lib/site-packages/engineio/asyncio_server.py new file mode 100644 index 0000000..6639f26 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/asyncio_server.py @@ -0,0 +1,505 @@ +import asyncio +import urllib + +from . import exceptions +from . import packet +from . import server +from . import asyncio_socket + + +class AsyncServer(server.Server): + """An Engine.IO server for asyncio. + + This class implements a fully compliant Engine.IO web server with support + for websocket and long-polling transports, compatible with the asyncio + framework on Python 3.5 or newer. + + :param async_mode: The asynchronous model to use. See the Deployment + section in the documentation for a description of the + available options. Valid async modes are "aiohttp", + "sanic", "tornado" and "asgi". If this argument is not + given, "aiohttp" is tried first, followed by "sanic", + "tornado", and finally "asgi". The first async mode that + has all its dependencies installed is the one that is + chosen. + :param ping_interval: The interval in seconds at which the server pings + the client. The default is 25 seconds. For advanced + control, a two element tuple can be given, where + the first number is the ping interval and the second + is a grace period added by the server. + :param ping_timeout: The time in seconds that the client waits for the + server to respond before disconnecting. The default + is 5 seconds. + :param max_http_buffer_size: The maximum size of a message when using the + polling transport. The default is 1,000,000 + bytes. + :param allow_upgrades: Whether to allow transport upgrades or not. + :param http_compression: Whether to compress packages when using the + polling transport. + :param compression_threshold: Only compress messages when their byte size + is greater than this value. + :param cookie: If set to a string, it is the name of the HTTP cookie the + server sends back tot he client containing the client + session id. If set to a dictionary, the ``'name'`` key + contains the cookie name and other keys define cookie + attributes, where the value of each attribute can be a + string, a callable with no arguments, or a boolean. If set + to ``None`` (the default), a cookie is not sent to the + client. + :param cors_allowed_origins: Origin or list of origins that are allowed to + connect to this server. Only the same origin + is allowed by default. Set this argument to + ``'*'`` to allow all origins, or to ``[]`` to + disable CORS handling. + :param cors_credentials: Whether credentials (cookies, authentication) are + allowed in requests to this server. + :param logger: To enable logging set to ``True`` or pass a logger object to + use. To disable logging set to ``False``. Note that fatal + errors are logged even when ``logger`` is ``False``. + :param json: An alternative json module to use for encoding and decoding + packets. Custom json modules must have ``dumps`` and ``loads`` + functions that are compatible with the standard library + versions. + :param async_handlers: If set to ``True``, run message event handlers in + non-blocking threads. To run handlers synchronously, + set to ``False``. The default is ``True``. + :param kwargs: Reserved for future extensions, any additional parameters + given as keyword arguments will be silently ignored. + """ + def is_asyncio_based(self): + return True + + def async_modes(self): + return ['aiohttp', 'sanic', 'tornado', 'asgi'] + + def attach(self, app, engineio_path='engine.io'): + """Attach the Engine.IO server to an application.""" + engineio_path = engineio_path.strip('/') + self._async['create_route'](app, self, '/{}/'.format(engineio_path)) + + async def send(self, sid, data): + """Send a message to a client. + + :param sid: The session id of the recipient client. + :param data: The data to send to the client. Data can be of type + ``str``, ``bytes``, ``list`` or ``dict``. If a ``list`` + or ``dict``, the data will be serialized as JSON. + + Note: this method is a coroutine. + """ + try: + socket = self._get_socket(sid) + except KeyError: + # the socket is not available + self.logger.warning('Cannot send to sid %s', sid) + return + await socket.send(packet.Packet(packet.MESSAGE, data=data)) + + async def get_session(self, sid): + """Return the user session for a client. + + :param sid: The session id of the client. + + The return value is a dictionary. Modifications made to this + dictionary are not guaranteed to be preserved. If you want to modify + the user session, use the ``session`` context manager instead. + """ + socket = self._get_socket(sid) + return socket.session + + async def save_session(self, sid, session): + """Store the user session for a client. + + :param sid: The session id of the client. + :param session: The session dictionary. + """ + socket = self._get_socket(sid) + socket.session = session + + def session(self, sid): + """Return the user session for a client with context manager syntax. + + :param sid: The session id of the client. + + This is a context manager that returns the user session dictionary for + the client. Any changes that are made to this dictionary inside the + context manager block are saved back to the session. Example usage:: + + @eio.on('connect') + def on_connect(sid, environ): + username = authenticate_user(environ) + if not username: + return False + with eio.session(sid) as session: + session['username'] = username + + @eio.on('message') + def on_message(sid, msg): + async with eio.session(sid) as session: + print('received message from ', session['username']) + """ + class _session_context_manager(object): + def __init__(self, server, sid): + self.server = server + self.sid = sid + self.session = None + + async def __aenter__(self): + self.session = await self.server.get_session(sid) + return self.session + + async def __aexit__(self, *args): + await self.server.save_session(sid, self.session) + + return _session_context_manager(self, sid) + + async def disconnect(self, sid=None): + """Disconnect a client. + + :param sid: The session id of the client to close. If this parameter + is not given, then all clients are closed. + + Note: this method is a coroutine. + """ + if sid is not None: + try: + socket = self._get_socket(sid) + except KeyError: # pragma: no cover + # the socket was already closed or gone + pass + else: + await socket.close() + if sid in self.sockets: # pragma: no cover + del self.sockets[sid] + else: + await asyncio.wait([client.close() + for client in self.sockets.values()]) + self.sockets = {} + + async def handle_request(self, *args, **kwargs): + """Handle an HTTP request from the client. + + This is the entry point of the Engine.IO application. This function + returns the HTTP response to deliver to the client. + + Note: this method is a coroutine. + """ + translate_request = self._async['translate_request'] + if asyncio.iscoroutinefunction(translate_request): + environ = await translate_request(*args, **kwargs) + else: + environ = translate_request(*args, **kwargs) + + if self.cors_allowed_origins != []: + # Validate the origin header if present + # This is important for WebSocket more than for HTTP, since + # browsers only apply CORS controls to HTTP. + origin = environ.get('HTTP_ORIGIN') + if origin: + allowed_origins = self._cors_allowed_origins(environ) + if allowed_origins is not None and origin not in \ + allowed_origins: + self._log_error_once( + origin + ' is not an accepted origin.', 'bad-origin') + return await self._make_response( + self._bad_request( + origin + ' is not an accepted origin.'), + environ) + + method = environ['REQUEST_METHOD'] + query = urllib.parse.parse_qs(environ.get('QUERY_STRING', '')) + + sid = query['sid'][0] if 'sid' in query else None + jsonp = False + jsonp_index = None + + # make sure the client speaks a compatible Engine.IO version + sid = query['sid'][0] if 'sid' in query else None + if sid is None and query.get('EIO') != ['4']: + self._log_error_once( + 'The client is using an unsupported version of the Socket.IO ' + 'or Engine.IO protocols', 'bad-version' + ) + return await self._make_response(self._bad_request( + 'The client is using an unsupported version of the Socket.IO ' + 'or Engine.IO protocols' + ), environ) + + if 'j' in query: + jsonp = True + try: + jsonp_index = int(query['j'][0]) + except (ValueError, KeyError, IndexError): + # Invalid JSONP index number + pass + + if jsonp and jsonp_index is None: + self._log_error_once('Invalid JSONP index number', + 'bad-jsonp-index') + r = self._bad_request('Invalid JSONP index number') + elif method == 'GET': + if sid is None: + transport = query.get('transport', ['polling'])[0] + # transport must be one of 'polling' or 'websocket'. + # if 'websocket', the HTTP_UPGRADE header must match. + upgrade_header = environ.get('HTTP_UPGRADE').lower() \ + if 'HTTP_UPGRADE' in environ else None + if transport == 'polling' \ + or transport == upgrade_header == 'websocket': + r = await self._handle_connect(environ, transport, + jsonp_index) + else: + self._log_error_once('Invalid transport ' + transport, + 'bad-transport') + r = self._bad_request('Invalid transport ' + transport) + else: + if sid not in self.sockets: + self._log_error_once('Invalid session ' + sid, 'bad-sid') + r = self._bad_request('Invalid session ' + sid) + else: + socket = self._get_socket(sid) + try: + packets = await socket.handle_get_request(environ) + if isinstance(packets, list): + r = self._ok(packets, jsonp_index=jsonp_index) + else: + r = packets + except exceptions.EngineIOError: + if sid in self.sockets: # pragma: no cover + await self.disconnect(sid) + r = self._bad_request() + if sid in self.sockets and self.sockets[sid].closed: + del self.sockets[sid] + elif method == 'POST': + if sid is None or sid not in self.sockets: + self._log_error_once('Invalid session ' + sid, 'bad-sid') + r = self._bad_request('Invalid session ' + sid) + else: + socket = self._get_socket(sid) + try: + await socket.handle_post_request(environ) + r = self._ok(jsonp_index=jsonp_index) + except exceptions.EngineIOError: + if sid in self.sockets: # pragma: no cover + await self.disconnect(sid) + r = self._bad_request() + except: # pragma: no cover + # for any other unexpected errors, we log the error + # and keep going + self.logger.exception('post request handler error') + r = self._ok(jsonp_index=jsonp_index) + elif method == 'OPTIONS': + r = self._ok() + else: + self.logger.warning('Method %s not supported', method) + r = self._method_not_found() + if not isinstance(r, dict): + return r + if self.http_compression and \ + len(r['response']) >= self.compression_threshold: + encodings = [e.split(';')[0].strip() for e in + environ.get('HTTP_ACCEPT_ENCODING', '').split(',')] + for encoding in encodings: + if encoding in self.compression_methods: + r['response'] = \ + getattr(self, '_' + encoding)(r['response']) + r['headers'] += [('Content-Encoding', encoding)] + break + return await self._make_response(r, environ) + + def start_background_task(self, target, *args, **kwargs): + """Start a background task using the appropriate async model. + + This is a utility function that applications can use to start a + background task using the method that is compatible with the + selected async mode. + + :param target: the target function to execute. + :param args: arguments to pass to the function. + :param kwargs: keyword arguments to pass to the function. + + The return value is a ``asyncio.Task`` object. + """ + return asyncio.ensure_future(target(*args, **kwargs)) + + async def sleep(self, seconds=0): + """Sleep for the requested amount of time using the appropriate async + model. + + This is a utility function that applications can use to put a task to + sleep without having to worry about using the correct call for the + selected async mode. + + Note: this method is a coroutine. + """ + return await asyncio.sleep(seconds) + + def create_queue(self, *args, **kwargs): + """Create a queue object using the appropriate async model. + + This is a utility function that applications can use to create a queue + without having to worry about using the correct call for the selected + async mode. For asyncio based async modes, this returns an instance of + ``asyncio.Queue``. + """ + return asyncio.Queue(*args, **kwargs) + + def get_queue_empty_exception(self): + """Return the queue empty exception for the appropriate async model. + + This is a utility function that applications can use to work with a + queue without having to worry about using the correct call for the + selected async mode. For asyncio based async modes, this returns an + instance of ``asyncio.QueueEmpty``. + """ + return asyncio.QueueEmpty + + def create_event(self, *args, **kwargs): + """Create an event object using the appropriate async model. + + This is a utility function that applications can use to create an + event without having to worry about using the correct call for the + selected async mode. For asyncio based async modes, this returns + an instance of ``asyncio.Event``. + """ + return asyncio.Event(*args, **kwargs) + + async def _make_response(self, response_dict, environ): + cors_headers = self._cors_headers(environ) + make_response = self._async['make_response'] + if asyncio.iscoroutinefunction(make_response): + response = await make_response( + response_dict['status'], + response_dict['headers'] + cors_headers, + response_dict['response'], environ) + else: + response = make_response( + response_dict['status'], + response_dict['headers'] + cors_headers, + response_dict['response'], environ) + return response + + async def _handle_connect(self, environ, transport, jsonp_index=None): + """Handle a client connection request.""" + if self.start_service_task: + # start the service task to monitor connected clients + self.start_service_task = False + self.start_background_task(self._service_task) + + sid = self.generate_id() + s = asyncio_socket.AsyncSocket(self, sid) + self.sockets[sid] = s + + pkt = packet.Packet( + packet.OPEN, {'sid': sid, + 'upgrades': self._upgrades(sid, transport), + 'pingTimeout': int(self.ping_timeout * 1000), + 'pingInterval': int(self.ping_interval * 1000)}) + await s.send(pkt) + s.schedule_ping() + + ret = await self._trigger_event('connect', sid, environ, + run_async=False) + if ret is not None and ret is not True: + del self.sockets[sid] + self.logger.warning('Application rejected connection') + return self._unauthorized(ret or None) + + if transport == 'websocket': + ret = await s.handle_get_request(environ) + if s.closed and sid in self.sockets: + # websocket connection ended, so we are done + del self.sockets[sid] + return ret + else: + s.connected = True + headers = None + if self.cookie: + if isinstance(self.cookie, dict): + headers = [( + 'Set-Cookie', + self._generate_sid_cookie(sid, self.cookie) + )] + else: + headers = [( + 'Set-Cookie', + self._generate_sid_cookie(sid, { + 'name': self.cookie, 'path': '/', 'SameSite': 'Lax' + }) + )] + try: + return self._ok(await s.poll(), headers=headers, + jsonp_index=jsonp_index) + except exceptions.QueueEmpty: + return self._bad_request() + + async def _trigger_event(self, event, *args, **kwargs): + """Invoke an event handler.""" + run_async = kwargs.pop('run_async', False) + ret = None + if event in self.handlers: + if asyncio.iscoroutinefunction(self.handlers[event]) is True: + if run_async: + return self.start_background_task(self.handlers[event], + *args) + else: + try: + ret = await self.handlers[event](*args) + except asyncio.CancelledError: # pragma: no cover + pass + except: + self.logger.exception(event + ' async handler error') + if event == 'connect': + # if connect handler raised error we reject the + # connection + return False + else: + if run_async: + async def async_handler(): + return self.handlers[event](*args) + + return self.start_background_task(async_handler) + else: + try: + ret = self.handlers[event](*args) + except: + self.logger.exception(event + ' handler error') + if event == 'connect': + # if connect handler raised error we reject the + # connection + return False + return ret + + async def _service_task(self): # pragma: no cover + """Monitor connected clients and clean up those that time out.""" + while True: + if len(self.sockets) == 0: + # nothing to do + await self.sleep(self.ping_timeout) + continue + + # go through the entire client list in a ping interval cycle + sleep_interval = self.ping_timeout / len(self.sockets) + + try: + # iterate over the current clients + for socket in self.sockets.copy().values(): + if not socket.closing and not socket.closed: + await socket.check_ping_timeout() + await self.sleep(sleep_interval) + except ( + SystemExit, + KeyboardInterrupt, + asyncio.CancelledError, + GeneratorExit, + ): + self.logger.info('service task canceled') + break + except: + if asyncio.get_event_loop().is_closed(): + self.logger.info('event loop is closed, exiting service ' + 'task') + break + + # an unexpected exception has occurred, log it and continue + self.logger.exception('service task exception') diff --git a/matteo_env/Lib/site-packages/engineio/asyncio_socket.py b/matteo_env/Lib/site-packages/engineio/asyncio_socket.py new file mode 100644 index 0000000..508ee3c --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/asyncio_socket.py @@ -0,0 +1,245 @@ +import asyncio +import sys +import time + +from . import exceptions +from . import packet +from . import payload +from . import socket + + +class AsyncSocket(socket.Socket): + async def poll(self): + """Wait for packets to send to the client.""" + try: + packets = [await asyncio.wait_for( + self.queue.get(), + self.server.ping_interval + self.server.ping_timeout)] + self.queue.task_done() + except (asyncio.TimeoutError, asyncio.CancelledError): + raise exceptions.QueueEmpty() + if packets == [None]: + return [] + while True: + try: + pkt = self.queue.get_nowait() + self.queue.task_done() + if pkt is None: + self.queue.put_nowait(None) + break + packets.append(pkt) + except asyncio.QueueEmpty: + break + return packets + + async def receive(self, pkt): + """Receive packet from the client.""" + self.server.logger.info('%s: Received packet %s data %s', + self.sid, packet.packet_names[pkt.packet_type], + pkt.data if not isinstance(pkt.data, bytes) + else '') + if pkt.packet_type == packet.PONG: + self.schedule_ping() + elif pkt.packet_type == packet.MESSAGE: + await self.server._trigger_event( + 'message', self.sid, pkt.data, + run_async=self.server.async_handlers) + elif pkt.packet_type == packet.UPGRADE: + await self.send(packet.Packet(packet.NOOP)) + elif pkt.packet_type == packet.CLOSE: + await self.close(wait=False, abort=True) + else: + raise exceptions.UnknownPacketError() + + async def check_ping_timeout(self): + """Make sure the client is still sending pings.""" + if self.closed: + raise exceptions.SocketIsClosedError() + if self.last_ping and \ + time.time() - self.last_ping > self.server.ping_timeout: + self.server.logger.info('%s: Client is gone, closing socket', + self.sid) + # Passing abort=False here will cause close() to write a + # CLOSE packet. This has the effect of updating half-open sockets + # to their correct state of disconnected + await self.close(wait=False, abort=False) + return False + return True + + async def send(self, pkt): + """Send a packet to the client.""" + if not await self.check_ping_timeout(): + return + else: + await self.queue.put(pkt) + self.server.logger.info('%s: Sending packet %s data %s', + self.sid, packet.packet_names[pkt.packet_type], + pkt.data if not isinstance(pkt.data, bytes) + else '') + + async def handle_get_request(self, environ): + """Handle a long-polling GET request from the client.""" + connections = [ + s.strip() + for s in environ.get('HTTP_CONNECTION', '').lower().split(',')] + transport = environ.get('HTTP_UPGRADE', '').lower() + if 'upgrade' in connections and transport in self.upgrade_protocols: + self.server.logger.info('%s: Received request to upgrade to %s', + self.sid, transport) + return await getattr(self, '_upgrade_' + transport)(environ) + if self.upgrading or self.upgraded: + # we are upgrading to WebSocket, do not return any more packets + # through the polling endpoint + return [packet.Packet(packet.NOOP)] + try: + packets = await self.poll() + except exceptions.QueueEmpty: + exc = sys.exc_info() + await self.close(wait=False) + raise exc[1].with_traceback(exc[2]) + return packets + + async def handle_post_request(self, environ): + """Handle a long-polling POST request from the client.""" + length = int(environ.get('CONTENT_LENGTH', '0')) + if length > self.server.max_http_buffer_size: + raise exceptions.ContentTooLongError() + else: + body = (await environ['wsgi.input'].read(length)).decode('utf-8') + p = payload.Payload(encoded_payload=body) + for pkt in p.packets: + await self.receive(pkt) + + async def close(self, wait=True, abort=False): + """Close the socket connection.""" + if not self.closed and not self.closing: + self.closing = True + await self.server._trigger_event('disconnect', self.sid) + if not abort: + await self.send(packet.Packet(packet.CLOSE)) + self.closed = True + if wait: + await self.queue.join() + + def schedule_ping(self): + async def send_ping(): + self.last_ping = None + await asyncio.sleep(self.server.ping_interval) + if not self.closing and not self.closed: + self.last_ping = time.time() + await self.send(packet.Packet(packet.PING)) + + self.server.start_background_task(send_ping) + + async def _upgrade_websocket(self, environ): + """Upgrade the connection from polling to websocket.""" + if self.upgraded: + raise IOError('Socket has been upgraded already') + if self.server._async['websocket'] is None: + # the selected async mode does not support websocket + return self.server._bad_request() + ws = self.server._async['websocket'](self._websocket_handler) + return await ws(environ) + + async def _websocket_handler(self, ws): + """Engine.IO handler for websocket transport.""" + if self.connected: + # the socket was already connected, so this is an upgrade + self.upgrading = True # hold packet sends during the upgrade + + try: + pkt = await ws.wait() + except IOError: # pragma: no cover + return + decoded_pkt = packet.Packet(encoded_packet=pkt) + if decoded_pkt.packet_type != packet.PING or \ + decoded_pkt.data != 'probe': + self.server.logger.info( + '%s: Failed websocket upgrade, no PING packet', self.sid) + self.upgrading = False + return + await ws.send(packet.Packet(packet.PONG, data='probe').encode()) + await self.queue.put(packet.Packet(packet.NOOP)) # end poll + + try: + pkt = await ws.wait() + except IOError: # pragma: no cover + self.upgrading = False + return + decoded_pkt = packet.Packet(encoded_packet=pkt) + if decoded_pkt.packet_type != packet.UPGRADE: + self.upgraded = False + self.server.logger.info( + ('%s: Failed websocket upgrade, expected UPGRADE packet, ' + 'received %s instead.'), + self.sid, pkt) + self.upgrading = False + return + self.upgraded = True + self.upgrading = False + else: + self.connected = True + self.upgraded = True + + # start separate writer thread + async def writer(): + while True: + packets = None + try: + packets = await self.poll() + except exceptions.QueueEmpty: + break + if not packets: + # empty packet list returned -> connection closed + break + try: + for pkt in packets: + await ws.send(pkt.encode()) + except: + break + writer_task = asyncio.ensure_future(writer()) + + self.server.logger.info( + '%s: Upgrade to websocket successful', self.sid) + + while True: + p = None + wait_task = asyncio.ensure_future(ws.wait()) + try: + p = await asyncio.wait_for( + wait_task, + self.server.ping_interval + self.server.ping_timeout) + except asyncio.CancelledError: # pragma: no cover + # there is a bug (https://bugs.python.org/issue30508) in + # asyncio that causes a "Task exception never retrieved" error + # to appear when wait_task raises an exception before it gets + # cancelled. Calling wait_task.exception() prevents the error + # from being issued in Python 3.6, but causes other errors in + # other versions, so we run it with all errors suppressed and + # hope for the best. + try: + wait_task.exception() + except: + pass + break + except: + break + if p is None: + # connection closed by client + break + pkt = packet.Packet(encoded_packet=p) + try: + await self.receive(pkt) + except exceptions.UnknownPacketError: # pragma: no cover + pass + except exceptions.SocketIsClosedError: # pragma: no cover + self.server.logger.info('Receive error -- socket is closed') + break + except: # pragma: no cover + # if we get an unexpected exception we log the error and exit + # the connection properly + self.server.logger.exception('Unknown receive error') + + await self.queue.put(None) # unlock the writer task so it can exit + await asyncio.wait_for(writer_task, timeout=None) + await self.close(wait=False, abort=True) diff --git a/matteo_env/Lib/site-packages/engineio/client.py b/matteo_env/Lib/site-packages/engineio/client.py new file mode 100644 index 0000000..524c1a6 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/client.py @@ -0,0 +1,706 @@ +from base64 import b64encode +from json import JSONDecodeError +import logging +try: + import queue +except ImportError: # pragma: no cover + import Queue as queue +import signal +import ssl +import threading +import time +import urllib + +try: + import requests +except ImportError: # pragma: no cover + requests = None +try: + import websocket +except ImportError: # pragma: no cover + websocket = None +from . import exceptions +from . import packet +from . import payload + +default_logger = logging.getLogger('engineio.client') +connected_clients = [] + + +def signal_handler(sig, frame): + """SIGINT handler. + + Disconnect all active clients and then invoke the original signal handler. + """ + for client in connected_clients[:]: + if not client.is_asyncio_based(): + client.disconnect() + if callable(original_signal_handler): + return original_signal_handler(sig, frame) + else: # pragma: no cover + # Handle case where no original SIGINT handler was present. + return signal.default_int_handler(sig, frame) + + +original_signal_handler = None + + +class Client(object): + """An Engine.IO client. + + This class implements a fully compliant Engine.IO web client with support + for websocket and long-polling transports. + + :param logger: To enable logging set to ``True`` or pass a logger object to + use. To disable logging set to ``False``. The default is + ``False``. Note that fatal errors are logged even when + ``logger`` is ``False``. + :param json: An alternative json module to use for encoding and decoding + packets. Custom json modules must have ``dumps`` and ``loads`` + functions that are compatible with the standard library + versions. + :param request_timeout: A timeout in seconds for requests. The default is + 5 seconds. + :param http_session: an initialized ``requests.Session`` object to be used + when sending requests to the server. Use it if you + need to add special client options such as proxy + servers, SSL certificates, etc. + :param ssl_verify: ``True`` to verify SSL certificates, or ``False`` to + skip SSL certificate verification, allowing + connections to servers with self signed certificates. + The default is ``True``. + """ + event_names = ['connect', 'disconnect', 'message'] + + def __init__(self, + logger=False, + json=None, + request_timeout=5, + http_session=None, + ssl_verify=True): + global original_signal_handler + if original_signal_handler is None and \ + threading.current_thread() == threading.main_thread(): + original_signal_handler = signal.signal(signal.SIGINT, + signal_handler) + self.handlers = {} + self.base_url = None + self.transports = None + self.current_transport = None + self.sid = None + self.upgrades = None + self.ping_interval = None + self.ping_timeout = None + self.http = http_session + self.ws = None + self.read_loop_task = None + self.write_loop_task = None + self.queue = None + self.state = 'disconnected' + self.ssl_verify = ssl_verify + + if json is not None: + packet.Packet.json = json + if not isinstance(logger, bool): + self.logger = logger + else: + self.logger = default_logger + if self.logger.level == logging.NOTSET: + if logger: + self.logger.setLevel(logging.INFO) + else: + self.logger.setLevel(logging.ERROR) + self.logger.addHandler(logging.StreamHandler()) + + self.request_timeout = request_timeout + + def is_asyncio_based(self): + return False + + def on(self, event, handler=None): + """Register an event handler. + + :param event: The event name. Can be ``'connect'``, ``'message'`` or + ``'disconnect'``. + :param handler: The function that should be invoked to handle the + event. When this parameter is not given, the method + acts as a decorator for the handler function. + + Example usage:: + + # as a decorator: + @eio.on('connect') + def connect_handler(): + print('Connection request') + + # as a method: + def message_handler(msg): + print('Received message: ', msg) + eio.send('response') + eio.on('message', message_handler) + """ + if event not in self.event_names: + raise ValueError('Invalid event') + + def set_handler(handler): + self.handlers[event] = handler + return handler + + if handler is None: + return set_handler + set_handler(handler) + + def connect(self, url, headers=None, transports=None, + engineio_path='engine.io'): + """Connect to an Engine.IO server. + + :param url: The URL of the Engine.IO server. It can include custom + query string parameters if required by the server. + :param headers: A dictionary with custom headers to send with the + connection request. + :param transports: The list of allowed transports. Valid transports + are ``'polling'`` and ``'websocket'``. If not + given, the polling transport is connected first, + then an upgrade to websocket is attempted. + :param engineio_path: The endpoint where the Engine.IO server is + installed. The default value is appropriate for + most cases. + + Example usage:: + + eio = engineio.Client() + eio.connect('http://localhost:5000') + """ + if self.state != 'disconnected': + raise ValueError('Client is not in a disconnected state') + valid_transports = ['polling', 'websocket'] + if transports is not None: + if isinstance(transports, str): + transports = [transports] + transports = [transport for transport in transports + if transport in valid_transports] + if not transports: + raise ValueError('No valid transports provided') + self.transports = transports or valid_transports + self.queue = self.create_queue() + return getattr(self, '_connect_' + self.transports[0])( + url, headers or {}, engineio_path) + + def wait(self): + """Wait until the connection with the server ends. + + Client applications can use this function to block the main thread + during the life of the connection. + """ + if self.read_loop_task: + self.read_loop_task.join() + + def send(self, data): + """Send a message to a client. + + :param data: The data to send to the client. Data can be of type + ``str``, ``bytes``, ``list`` or ``dict``. If a ``list`` + or ``dict``, the data will be serialized as JSON. + """ + self._send_packet(packet.Packet(packet.MESSAGE, data=data)) + + def disconnect(self, abort=False): + """Disconnect from the server. + + :param abort: If set to ``True``, do not wait for background tasks + associated with the connection to end. + """ + if self.state == 'connected': + self._send_packet(packet.Packet(packet.CLOSE)) + self.queue.put(None) + self.state = 'disconnecting' + self._trigger_event('disconnect', run_async=False) + if self.current_transport == 'websocket': + self.ws.close() + if not abort: + self.read_loop_task.join() + self.state = 'disconnected' + try: + connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + + def transport(self): + """Return the name of the transport currently in use. + + The possible values returned by this function are ``'polling'`` and + ``'websocket'``. + """ + return self.current_transport + + def start_background_task(self, target, *args, **kwargs): + """Start a background task. + + This is a utility function that applications can use to start a + background task. + + :param target: the target function to execute. + :param args: arguments to pass to the function. + :param kwargs: keyword arguments to pass to the function. + + This function returns an object compatible with the `Thread` class in + the Python standard library. The `start()` method on this object is + already called by this function. + """ + th = threading.Thread(target=target, args=args, kwargs=kwargs) + th.start() + return th + + def sleep(self, seconds=0): + """Sleep for the requested amount of time.""" + return time.sleep(seconds) + + def create_queue(self, *args, **kwargs): + """Create a queue object.""" + q = queue.Queue(*args, **kwargs) + q.Empty = queue.Empty + return q + + def create_event(self, *args, **kwargs): + """Create an event object.""" + return threading.Event(*args, **kwargs) + + def _reset(self): + self.state = 'disconnected' + self.sid = None + + def _connect_polling(self, url, headers, engineio_path): + """Establish a long-polling connection to the Engine.IO server.""" + if requests is None: # pragma: no cover + # not installed + self.logger.error('requests package is not installed -- cannot ' + 'send HTTP requests!') + return + self.base_url = self._get_engineio_url(url, engineio_path, 'polling') + self.logger.info('Attempting polling connection to ' + self.base_url) + r = self._send_request( + 'GET', self.base_url + self._get_url_timestamp(), headers=headers, + timeout=self.request_timeout) + if r is None: + self._reset() + raise exceptions.ConnectionError( + 'Connection refused by the server') + if r.status_code < 200 or r.status_code >= 300: + self._reset() + try: + arg = r.json() + except JSONDecodeError: + arg = None + raise exceptions.ConnectionError( + 'Unexpected status code {} in server response'.format( + r.status_code), arg) + try: + p = payload.Payload(encoded_payload=r.content.decode('utf-8')) + except ValueError: + raise exceptions.ConnectionError( + 'Unexpected response from server') from None + open_packet = p.packets[0] + if open_packet.packet_type != packet.OPEN: + raise exceptions.ConnectionError( + 'OPEN packet not returned by server') + self.logger.info( + 'Polling connection accepted with ' + str(open_packet.data)) + self.sid = open_packet.data['sid'] + self.upgrades = open_packet.data['upgrades'] + self.ping_interval = int(open_packet.data['pingInterval']) / 1000.0 + self.ping_timeout = int(open_packet.data['pingTimeout']) / 1000.0 + self.current_transport = 'polling' + self.base_url += '&sid=' + self.sid + + self.state = 'connected' + connected_clients.append(self) + self._trigger_event('connect', run_async=False) + + for pkt in p.packets[1:]: + self._receive_packet(pkt) + + if 'websocket' in self.upgrades and 'websocket' in self.transports: + # attempt to upgrade to websocket + if self._connect_websocket(url, headers, engineio_path): + # upgrade to websocket succeeded, we're done here + return + + # start background tasks associated with this client + self.write_loop_task = self.start_background_task(self._write_loop) + self.read_loop_task = self.start_background_task( + self._read_loop_polling) + + def _connect_websocket(self, url, headers, engineio_path): + """Establish or upgrade to a WebSocket connection with the server.""" + if websocket is None: # pragma: no cover + # not installed + self.logger.warning('websocket-client package not installed, only ' + 'polling transport is available') + return False + websocket_url = self._get_engineio_url(url, engineio_path, 'websocket') + if self.sid: + self.logger.info( + 'Attempting WebSocket upgrade to ' + websocket_url) + upgrade = True + websocket_url += '&sid=' + self.sid + else: + upgrade = False + self.base_url = websocket_url + self.logger.info( + 'Attempting WebSocket connection to ' + websocket_url) + + # get cookies and other settings from the long-polling connection + # so that they are preserved when connecting to the WebSocket route + cookies = None + extra_options = {} + if self.http: + # cookies + cookies = '; '.join(["{}={}".format(cookie.name, cookie.value) + for cookie in self.http.cookies]) + for header, value in headers.items(): + if header.lower() == 'cookie': + if cookies: + cookies += '; ' + cookies += value + del headers[header] + break + + # auth + if 'Authorization' not in headers and self.http.auth is not None: + if not isinstance(self.http.auth, tuple): # pragma: no cover + raise ValueError('Only basic authentication is supported') + basic_auth = '{}:{}'.format( + self.http.auth[0], self.http.auth[1]).encode('utf-8') + basic_auth = b64encode(basic_auth).decode('utf-8') + headers['Authorization'] = 'Basic ' + basic_auth + + # cert + # this can be given as ('certfile', 'keyfile') or just 'certfile' + if isinstance(self.http.cert, tuple): + extra_options['sslopt'] = { + 'certfile': self.http.cert[0], + 'keyfile': self.http.cert[1]} + elif self.http.cert: + extra_options['sslopt'] = {'certfile': self.http.cert} + + # proxies + if self.http.proxies: + proxy_url = None + if websocket_url.startswith('ws://'): + proxy_url = self.http.proxies.get( + 'ws', self.http.proxies.get('http')) + else: # wss:// + proxy_url = self.http.proxies.get( + 'wss', self.http.proxies.get('https')) + if proxy_url: + parsed_url = urllib.parse.urlparse( + proxy_url if '://' in proxy_url + else 'scheme://' + proxy_url) + extra_options['http_proxy_host'] = parsed_url.hostname + extra_options['http_proxy_port'] = parsed_url.port + extra_options['http_proxy_auth'] = ( + (parsed_url.username, parsed_url.password) + if parsed_url.username or parsed_url.password + else None) + + # verify + if not self.http.verify: + self.ssl_verify = False + + if not self.ssl_verify: + extra_options['sslopt'] = {"cert_reqs": ssl.CERT_NONE} + try: + ws = websocket.create_connection( + websocket_url + self._get_url_timestamp(), header=headers, + cookie=cookies, enable_multithread=True, **extra_options) + except (ConnectionError, IOError, websocket.WebSocketException): + if upgrade: + self.logger.warning( + 'WebSocket upgrade failed: connection error') + return False + else: + raise exceptions.ConnectionError('Connection error') + if upgrade: + p = packet.Packet(packet.PING, data='probe').encode() + try: + ws.send(p) + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected send exception: %s', + str(e)) + return False + try: + p = ws.recv() + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected recv exception: %s', + str(e)) + return False + pkt = packet.Packet(encoded_packet=p) + if pkt.packet_type != packet.PONG or pkt.data != 'probe': + self.logger.warning( + 'WebSocket upgrade failed: no PONG packet') + return False + p = packet.Packet(packet.UPGRADE).encode() + try: + ws.send(p) + except Exception as e: # pragma: no cover + self.logger.warning( + 'WebSocket upgrade failed: unexpected send exception: %s', + str(e)) + return False + self.current_transport = 'websocket' + self.logger.info('WebSocket upgrade was successful') + else: + try: + p = ws.recv() + except Exception as e: # pragma: no cover + raise exceptions.ConnectionError( + 'Unexpected recv exception: ' + str(e)) + open_packet = packet.Packet(encoded_packet=p) + if open_packet.packet_type != packet.OPEN: + raise exceptions.ConnectionError('no OPEN packet') + self.logger.info( + 'WebSocket connection accepted with ' + str(open_packet.data)) + self.sid = open_packet.data['sid'] + self.upgrades = open_packet.data['upgrades'] + self.ping_interval = int(open_packet.data['pingInterval']) / 1000.0 + self.ping_timeout = int(open_packet.data['pingTimeout']) / 1000.0 + self.current_transport = 'websocket' + + self.state = 'connected' + connected_clients.append(self) + self._trigger_event('connect', run_async=False) + self.ws = ws + self.ws.settimeout(self.ping_interval + self.ping_timeout) + + # start background tasks associated with this client + self.write_loop_task = self.start_background_task(self._write_loop) + self.read_loop_task = self.start_background_task( + self._read_loop_websocket) + return True + + def _receive_packet(self, pkt): + """Handle incoming packets from the server.""" + packet_name = packet.packet_names[pkt.packet_type] \ + if pkt.packet_type < len(packet.packet_names) else 'UNKNOWN' + self.logger.info( + 'Received packet %s data %s', packet_name, + pkt.data if not isinstance(pkt.data, bytes) else '') + if pkt.packet_type == packet.MESSAGE: + self._trigger_event('message', pkt.data, run_async=True) + elif pkt.packet_type == packet.PING: + self._send_packet(packet.Packet(packet.PONG, pkt.data)) + elif pkt.packet_type == packet.CLOSE: + self.disconnect(abort=True) + elif pkt.packet_type == packet.NOOP: + pass + else: + self.logger.error('Received unexpected packet of type %s', + pkt.packet_type) + + def _send_packet(self, pkt): + """Queue a packet to be sent to the server.""" + if self.state != 'connected': + return + self.queue.put(pkt) + self.logger.info( + 'Sending packet %s data %s', + packet.packet_names[pkt.packet_type], + pkt.data if not isinstance(pkt.data, bytes) else '') + + def _send_request( + self, method, url, headers=None, body=None, + timeout=None): # pragma: no cover + if self.http is None: + self.http = requests.Session() + try: + return self.http.request(method, url, headers=headers, data=body, + timeout=timeout, verify=self.ssl_verify) + except requests.exceptions.RequestException as exc: + self.logger.info('HTTP %s request to %s failed with error %s.', + method, url, exc) + + def _trigger_event(self, event, *args, **kwargs): + """Invoke an event handler.""" + run_async = kwargs.pop('run_async', False) + if event in self.handlers: + if run_async: + return self.start_background_task(self.handlers[event], *args) + else: + try: + return self.handlers[event](*args) + except: + self.logger.exception(event + ' handler error') + + def _get_engineio_url(self, url, engineio_path, transport): + """Generate the Engine.IO connection URL.""" + engineio_path = engineio_path.strip('/') + parsed_url = urllib.parse.urlparse(url) + + if transport == 'polling': + scheme = 'http' + elif transport == 'websocket': + scheme = 'ws' + else: # pragma: no cover + raise ValueError('invalid transport') + if parsed_url.scheme in ['https', 'wss']: + scheme += 's' + + return ('{scheme}://{netloc}/{path}/?{query}' + '{sep}transport={transport}&EIO=4').format( + scheme=scheme, netloc=parsed_url.netloc, + path=engineio_path, query=parsed_url.query, + sep='&' if parsed_url.query else '', + transport=transport) + + def _get_url_timestamp(self): + """Generate the Engine.IO query string timestamp.""" + return '&t=' + str(time.time()) + + def _read_loop_polling(self): + """Read packets by polling the Engine.IO server.""" + while self.state == 'connected': + self.logger.info( + 'Sending polling GET request to ' + self.base_url) + r = self._send_request( + 'GET', self.base_url + self._get_url_timestamp(), + timeout=max(self.ping_interval, self.ping_timeout) + 5) + if r is None: + self.logger.warning( + 'Connection refused by the server, aborting') + self.queue.put(None) + break + if r.status_code < 200 or r.status_code >= 300: + self.logger.warning('Unexpected status code %s in server ' + 'response, aborting', r.status_code) + self.queue.put(None) + break + try: + p = payload.Payload(encoded_payload=r.content.decode('utf-8')) + except ValueError: + self.logger.warning( + 'Unexpected packet from server, aborting') + self.queue.put(None) + break + for pkt in p.packets: + self._receive_packet(pkt) + + self.logger.info('Waiting for write loop task to end') + self.write_loop_task.join() + if self.state == 'connected': + self._trigger_event('disconnect', run_async=False) + try: + connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + self.logger.info('Exiting read loop task') + + def _read_loop_websocket(self): + """Read packets from the Engine.IO WebSocket connection.""" + while self.state == 'connected': + p = None + try: + p = self.ws.recv() + except websocket.WebSocketTimeoutException: + self.logger.warning( + 'Server has stopped communicating, aborting') + self.queue.put(None) + break + except websocket.WebSocketConnectionClosedException: + self.logger.warning( + 'WebSocket connection was closed, aborting') + self.queue.put(None) + break + except Exception as e: + self.logger.info( + 'Unexpected error receiving packet: "%s", aborting', + str(e)) + self.queue.put(None) + break + try: + pkt = packet.Packet(encoded_packet=p) + except Exception as e: # pragma: no cover + self.logger.info( + 'Unexpected error decoding packet: "%s", aborting', str(e)) + self.queue.put(None) + break + self._receive_packet(pkt) + + self.logger.info('Waiting for write loop task to end') + self.write_loop_task.join() + if self.state == 'connected': + self._trigger_event('disconnect', run_async=False) + try: + connected_clients.remove(self) + except ValueError: # pragma: no cover + pass + self._reset() + self.logger.info('Exiting read loop task') + + def _write_loop(self): + """This background task sends packages to the server as they are + pushed to the send queue. + """ + while self.state == 'connected': + # to simplify the timeout handling, use the maximum of the + # ping interval and ping timeout as timeout, with an extra 5 + # seconds grace period + timeout = max(self.ping_interval, self.ping_timeout) + 5 + packets = None + try: + packets = [self.queue.get(timeout=timeout)] + except self.queue.Empty: + self.logger.error('packet queue is empty, aborting') + break + if packets == [None]: + self.queue.task_done() + packets = [] + else: + while True: + try: + packets.append(self.queue.get(block=False)) + except self.queue.Empty: + break + if packets[-1] is None: + packets = packets[:-1] + self.queue.task_done() + break + if not packets: + # empty packet list returned -> connection closed + break + if self.current_transport == 'polling': + p = payload.Payload(packets=packets) + r = self._send_request( + 'POST', self.base_url, body=p.encode(), + headers={'Content-Type': 'application/octet-stream'}, + timeout=self.request_timeout) + for pkt in packets: + self.queue.task_done() + if r is None: + self.logger.warning( + 'Connection refused by the server, aborting') + break + if r.status_code < 200 or r.status_code >= 300: + self.logger.warning('Unexpected status code %s in server ' + 'response, aborting', r.status_code) + self._reset() + break + else: + # websocket + try: + for pkt in packets: + encoded_packet = pkt.encode() + if pkt.binary: + self.ws.send_binary(encoded_packet) + else: + self.ws.send(encoded_packet) + self.queue.task_done() + except (websocket.WebSocketConnectionClosedException, + BrokenPipeError, OSError): + self.logger.warning( + 'WebSocket connection was closed, aborting') + break + self.logger.info('Exiting write loop task') diff --git a/matteo_env/Lib/site-packages/engineio/exceptions.py b/matteo_env/Lib/site-packages/engineio/exceptions.py new file mode 100644 index 0000000..fb0b3e0 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/exceptions.py @@ -0,0 +1,22 @@ +class EngineIOError(Exception): + pass + + +class ContentTooLongError(EngineIOError): + pass + + +class UnknownPacketError(EngineIOError): + pass + + +class QueueEmpty(EngineIOError): + pass + + +class SocketIsClosedError(EngineIOError): + pass + + +class ConnectionError(EngineIOError): + pass diff --git a/matteo_env/Lib/site-packages/engineio/middleware.py b/matteo_env/Lib/site-packages/engineio/middleware.py new file mode 100644 index 0000000..d0bdcc7 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/middleware.py @@ -0,0 +1,87 @@ +import os +from engineio.static_files import get_static_file + + +class WSGIApp(object): + """WSGI application middleware for Engine.IO. + + This middleware dispatches traffic to an Engine.IO application. It can + also serve a list of static files to the client, or forward unrelated + HTTP traffic to another WSGI application. + + :param engineio_app: The Engine.IO server. Must be an instance of the + ``engineio.Server`` class. + :param wsgi_app: The WSGI app that receives all other traffic. + :param static_files: A dictionary with static file mapping rules. See the + documentation for details on this argument. + :param engineio_path: The endpoint where the Engine.IO application should + be installed. The default value is appropriate for + most cases. + + Example usage:: + + import engineio + import eventlet + + eio = engineio.Server() + app = engineio.WSGIApp(eio, static_files={ + '/': {'content_type': 'text/html', 'filename': 'index.html'}, + '/index.html': {'content_type': 'text/html', + 'filename': 'index.html'}, + }) + eventlet.wsgi.server(eventlet.listen(('', 8000)), app) + """ + def __init__(self, engineio_app, wsgi_app=None, static_files=None, + engineio_path='engine.io'): + self.engineio_app = engineio_app + self.wsgi_app = wsgi_app + self.engineio_path = engineio_path.strip('/') + self.static_files = static_files or {} + + def __call__(self, environ, start_response): + if 'gunicorn.socket' in environ: + # gunicorn saves the socket under environ['gunicorn.socket'], while + # eventlet saves it under environ['eventlet.input']. Eventlet also + # stores the socket inside a wrapper class, while gunicon writes it + # directly into the environment. To give eventlet's WebSocket + # module access to this socket when running under gunicorn, here we + # copy the socket to the eventlet format. + class Input(object): + def __init__(self, socket): + self.socket = socket + + def get_socket(self): + return self.socket + + environ['eventlet.input'] = Input(environ['gunicorn.socket']) + path = environ['PATH_INFO'] + if path is not None and \ + path.startswith('/{0}/'.format(self.engineio_path)): + return self.engineio_app.handle_request(environ, start_response) + else: + static_file = get_static_file(path, self.static_files) \ + if self.static_files else None + if static_file: + if os.path.exists(static_file['filename']): + start_response( + '200 OK', + [('Content-Type', static_file['content_type'])]) + with open(static_file['filename'], 'rb') as f: + return [f.read()] + else: + return self.not_found(start_response) + elif self.wsgi_app is not None: + return self.wsgi_app(environ, start_response) + return self.not_found(start_response) + + def not_found(self, start_response): + start_response("404 Not Found", [('Content-Type', 'text/plain')]) + return [b'Not Found'] + + +class Middleware(WSGIApp): + """This class has been renamed to ``WSGIApp`` and is now deprecated.""" + def __init__(self, engineio_app, wsgi_app=None, + engineio_path='engine.io'): + super(Middleware, self).__init__(engineio_app, wsgi_app, + engineio_path=engineio_path) diff --git a/matteo_env/Lib/site-packages/engineio/packet.py b/matteo_env/Lib/site-packages/engineio/packet.py new file mode 100644 index 0000000..9dbd6c6 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/packet.py @@ -0,0 +1,72 @@ +import base64 +import json as _json + +(OPEN, CLOSE, PING, PONG, MESSAGE, UPGRADE, NOOP) = (0, 1, 2, 3, 4, 5, 6) +packet_names = ['OPEN', 'CLOSE', 'PING', 'PONG', 'MESSAGE', 'UPGRADE', 'NOOP'] + +binary_types = (bytes, bytearray) + + +class Packet(object): + """Engine.IO packet.""" + + json = _json + + def __init__(self, packet_type=NOOP, data=None, encoded_packet=None): + self.packet_type = packet_type + self.data = data + if isinstance(data, str): + self.binary = False + elif isinstance(data, binary_types): + self.binary = True + else: + self.binary = False + if self.binary and self.packet_type != MESSAGE: + raise ValueError('Binary packets can only be of type MESSAGE') + if encoded_packet: + self.decode(encoded_packet) + + def encode(self, b64=False): + """Encode the packet for transmission.""" + if self.binary: + if b64: + encoded_packet = 'b' + base64.b64encode(self.data).decode( + 'utf-8') + else: + encoded_packet = self.data + else: + encoded_packet = str(self.packet_type) + if isinstance(self.data, str): + encoded_packet += self.data + elif isinstance(self.data, dict) or isinstance(self.data, list): + encoded_packet += self.json.dumps(self.data, + separators=(',', ':')) + elif self.data is not None: + encoded_packet += str(self.data) + return encoded_packet + + def decode(self, encoded_packet): + """Decode a transmitted package.""" + self.binary = isinstance(encoded_packet, binary_types) + b64 = not self.binary and encoded_packet[0] == 'b' + if b64: + self.binary = True + self.packet_type = MESSAGE + self.data = base64.b64decode(encoded_packet[1:]) + else: + if self.binary and not isinstance(encoded_packet, bytes): + encoded_packet = bytes(encoded_packet) + if self.binary: + self.packet_type = MESSAGE + self.data = encoded_packet + else: + self.packet_type = int(encoded_packet[0]) + try: + self.data = self.json.loads(encoded_packet[1:]) + if isinstance(self.data, int): + # do not allow integer payloads, see + # github.com/miguelgrinberg/python-engineio/issues/75 + # for background on this decision + raise ValueError + except ValueError: + self.data = encoded_packet[1:] diff --git a/matteo_env/Lib/site-packages/engineio/payload.py b/matteo_env/Lib/site-packages/engineio/payload.py new file mode 100644 index 0000000..f0e9e34 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/payload.py @@ -0,0 +1,46 @@ +import urllib + +from . import packet + + +class Payload(object): + """Engine.IO payload.""" + max_decode_packets = 16 + + def __init__(self, packets=None, encoded_payload=None): + self.packets = packets or [] + if encoded_payload is not None: + self.decode(encoded_payload) + + def encode(self, jsonp_index=None): + """Encode the payload for transmission.""" + encoded_payload = '' + for pkt in self.packets: + if encoded_payload: + encoded_payload += '\x1e' + encoded_payload += pkt.encode(b64=True) + if jsonp_index is not None: + encoded_payload = '___eio[' + \ + str(jsonp_index) + \ + ']("' + \ + encoded_payload.replace('"', '\\"') + \ + '");' + return encoded_payload + + def decode(self, encoded_payload): + """Decode a transmitted payload.""" + self.packets = [] + + if len(encoded_payload) == 0: + return + + # JSONP POST payload starts with 'd=' + if encoded_payload.startswith('d='): + encoded_payload = urllib.parse.parse_qs( + encoded_payload)['d'][0] + + encoded_packets = encoded_payload.split('\x1e') + if len(encoded_packets) > self.max_decode_packets: + raise ValueError('Too many packets in payload') + self.packets = [packet.Packet(encoded_packet=encoded_packet) + for encoded_packet in encoded_packets] diff --git a/matteo_env/Lib/site-packages/engineio/server.py b/matteo_env/Lib/site-packages/engineio/server.py new file mode 100644 index 0000000..703e7e9 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/server.py @@ -0,0 +1,738 @@ +import base64 +import gzip +import importlib +import io +import logging +import secrets +import urllib +import zlib + +from . import exceptions +from . import packet +from . import payload +from . import socket + +default_logger = logging.getLogger('engineio.server') + + +class Server(object): + """An Engine.IO server. + + This class implements a fully compliant Engine.IO web server with support + for websocket and long-polling transports. + + :param async_mode: The asynchronous model to use. See the Deployment + section in the documentation for a description of the + available options. Valid async modes are "threading", + "eventlet", "gevent" and "gevent_uwsgi". If this + argument is not given, "eventlet" is tried first, then + "gevent_uwsgi", then "gevent", and finally "threading". + The first async mode that has all its dependencies + installed is the one that is chosen. + :param ping_interval: The interval in seconds at which the server pings + the client. The default is 25 seconds. For advanced + control, a two element tuple can be given, where + the first number is the ping interval and the second + is a grace period added by the server. + :param ping_timeout: The time in seconds that the client waits for the + server to respond before disconnecting. The default + is 5 seconds. + :param max_http_buffer_size: The maximum size of a message when using the + polling transport. The default is 1,000,000 + bytes. + :param allow_upgrades: Whether to allow transport upgrades or not. The + default is ``True``. + :param http_compression: Whether to compress packages when using the + polling transport. The default is ``True``. + :param compression_threshold: Only compress messages when their byte size + is greater than this value. The default is + 1024 bytes. + :param cookie: If set to a string, it is the name of the HTTP cookie the + server sends back tot he client containing the client + session id. If set to a dictionary, the ``'name'`` key + contains the cookie name and other keys define cookie + attributes, where the value of each attribute can be a + string, a callable with no arguments, or a boolean. If set + to ``None`` (the default), a cookie is not sent to the + client. + :param cors_allowed_origins: Origin or list of origins that are allowed to + connect to this server. Only the same origin + is allowed by default. Set this argument to + ``'*'`` to allow all origins, or to ``[]`` to + disable CORS handling. + :param cors_credentials: Whether credentials (cookies, authentication) are + allowed in requests to this server. The default + is ``True``. + :param logger: To enable logging set to ``True`` or pass a logger object to + use. To disable logging set to ``False``. The default is + ``False``. Note that fatal errors are logged even when + ``logger`` is ``False``. + :param json: An alternative json module to use for encoding and decoding + packets. Custom json modules must have ``dumps`` and ``loads`` + functions that are compatible with the standard library + versions. + :param async_handlers: If set to ``True``, run message event handlers in + non-blocking threads. To run handlers synchronously, + set to ``False``. The default is ``True``. + :param monitor_clients: If set to ``True``, a background task will ensure + inactive clients are closed. Set to ``False`` to + disable the monitoring task (not recommended). The + default is ``True``. + :param kwargs: Reserved for future extensions, any additional parameters + given as keyword arguments will be silently ignored. + """ + compression_methods = ['gzip', 'deflate'] + event_names = ['connect', 'disconnect', 'message'] + _default_monitor_clients = True + sequence_number = 0 + + def __init__(self, async_mode=None, ping_interval=25, ping_timeout=5, + max_http_buffer_size=1000000, allow_upgrades=True, + http_compression=True, compression_threshold=1024, + cookie=None, cors_allowed_origins=None, + cors_credentials=True, logger=False, json=None, + async_handlers=True, monitor_clients=None, **kwargs): + self.ping_timeout = ping_timeout + if isinstance(ping_interval, tuple): + self.ping_interval = ping_interval[0] + self.ping_interval_grace_period = ping_interval[1] + else: + self.ping_interval = ping_interval + self.ping_interval_grace_period = 0 + self.max_http_buffer_size = max_http_buffer_size + self.allow_upgrades = allow_upgrades + self.http_compression = http_compression + self.compression_threshold = compression_threshold + self.cookie = cookie + self.cors_allowed_origins = cors_allowed_origins + self.cors_credentials = cors_credentials + self.async_handlers = async_handlers + self.sockets = {} + self.handlers = {} + self.log_message_keys = set() + self.start_service_task = monitor_clients \ + if monitor_clients is not None else self._default_monitor_clients + if json is not None: + packet.Packet.json = json + if not isinstance(logger, bool): + self.logger = logger + else: + self.logger = default_logger + if self.logger.level == logging.NOTSET: + if logger: + self.logger.setLevel(logging.INFO) + else: + self.logger.setLevel(logging.ERROR) + self.logger.addHandler(logging.StreamHandler()) + modes = self.async_modes() + if async_mode is not None: + modes = [async_mode] if async_mode in modes else [] + self._async = None + self.async_mode = None + for mode in modes: + try: + self._async = importlib.import_module( + 'engineio.async_drivers.' + mode)._async + asyncio_based = self._async['asyncio'] \ + if 'asyncio' in self._async else False + if asyncio_based != self.is_asyncio_based(): + continue # pragma: no cover + self.async_mode = mode + break + except ImportError: + pass + if self.async_mode is None: + raise ValueError('Invalid async_mode specified') + if self.is_asyncio_based() and \ + ('asyncio' not in self._async or not + self._async['asyncio']): # pragma: no cover + raise ValueError('The selected async_mode is not asyncio ' + 'compatible') + if not self.is_asyncio_based() and 'asyncio' in self._async and \ + self._async['asyncio']: # pragma: no cover + raise ValueError('The selected async_mode requires asyncio and ' + 'must use the AsyncServer class') + self.logger.info('Server initialized for %s.', self.async_mode) + + def is_asyncio_based(self): + return False + + def async_modes(self): + return ['eventlet', 'gevent_uwsgi', 'gevent', 'threading'] + + def on(self, event, handler=None): + """Register an event handler. + + :param event: The event name. Can be ``'connect'``, ``'message'`` or + ``'disconnect'``. + :param handler: The function that should be invoked to handle the + event. When this parameter is not given, the method + acts as a decorator for the handler function. + + Example usage:: + + # as a decorator: + @eio.on('connect') + def connect_handler(sid, environ): + print('Connection request') + if environ['REMOTE_ADDR'] in blacklisted: + return False # reject + + # as a method: + def message_handler(sid, msg): + print('Received message: ', msg) + eio.send(sid, 'response') + eio.on('message', message_handler) + + The handler function receives the ``sid`` (session ID) for the + client as first argument. The ``'connect'`` event handler receives the + WSGI environment as a second argument, and can return ``False`` to + reject the connection. The ``'message'`` handler receives the message + payload as a second argument. The ``'disconnect'`` handler does not + take a second argument. + """ + if event not in self.event_names: + raise ValueError('Invalid event') + + def set_handler(handler): + self.handlers[event] = handler + return handler + + if handler is None: + return set_handler + set_handler(handler) + + def send(self, sid, data): + """Send a message to a client. + + :param sid: The session id of the recipient client. + :param data: The data to send to the client. Data can be of type + ``str``, ``bytes``, ``list`` or ``dict``. If a ``list`` + or ``dict``, the data will be serialized as JSON. + """ + try: + socket = self._get_socket(sid) + except KeyError: + # the socket is not available + self.logger.warning('Cannot send to sid %s', sid) + return + socket.send(packet.Packet(packet.MESSAGE, data=data)) + + def get_session(self, sid): + """Return the user session for a client. + + :param sid: The session id of the client. + + The return value is a dictionary. Modifications made to this + dictionary are not guaranteed to be preserved unless + ``save_session()`` is called, or when the ``session`` context manager + is used. + """ + socket = self._get_socket(sid) + return socket.session + + def save_session(self, sid, session): + """Store the user session for a client. + + :param sid: The session id of the client. + :param session: The session dictionary. + """ + socket = self._get_socket(sid) + socket.session = session + + def session(self, sid): + """Return the user session for a client with context manager syntax. + + :param sid: The session id of the client. + + This is a context manager that returns the user session dictionary for + the client. Any changes that are made to this dictionary inside the + context manager block are saved back to the session. Example usage:: + + @eio.on('connect') + def on_connect(sid, environ): + username = authenticate_user(environ) + if not username: + return False + with eio.session(sid) as session: + session['username'] = username + + @eio.on('message') + def on_message(sid, msg): + with eio.session(sid) as session: + print('received message from ', session['username']) + """ + class _session_context_manager(object): + def __init__(self, server, sid): + self.server = server + self.sid = sid + self.session = None + + def __enter__(self): + self.session = self.server.get_session(sid) + return self.session + + def __exit__(self, *args): + self.server.save_session(sid, self.session) + + return _session_context_manager(self, sid) + + def disconnect(self, sid=None): + """Disconnect a client. + + :param sid: The session id of the client to close. If this parameter + is not given, then all clients are closed. + """ + if sid is not None: + try: + socket = self._get_socket(sid) + except KeyError: # pragma: no cover + # the socket was already closed or gone + pass + else: + socket.close() + if sid in self.sockets: # pragma: no cover + del self.sockets[sid] + else: + for client in self.sockets.values(): + client.close() + self.sockets = {} + + def transport(self, sid): + """Return the name of the transport used by the client. + + The two possible values returned by this function are ``'polling'`` + and ``'websocket'``. + + :param sid: The session of the client. + """ + return 'websocket' if self._get_socket(sid).upgraded else 'polling' + + def handle_request(self, environ, start_response): + """Handle an HTTP request from the client. + + This is the entry point of the Engine.IO application, using the same + interface as a WSGI application. For the typical usage, this function + is invoked by the :class:`Middleware` instance, but it can be invoked + directly when the middleware is not used. + + :param environ: The WSGI environment. + :param start_response: The WSGI ``start_response`` function. + + This function returns the HTTP response body to deliver to the client + as a byte sequence. + """ + if self.cors_allowed_origins != []: + # Validate the origin header if present + # This is important for WebSocket more than for HTTP, since + # browsers only apply CORS controls to HTTP. + origin = environ.get('HTTP_ORIGIN') + if origin: + allowed_origins = self._cors_allowed_origins(environ) + if allowed_origins is not None and origin not in \ + allowed_origins: + self._log_error_once( + origin + ' is not an accepted origin.', 'bad-origin') + r = self._bad_request( + origin + ' is not an accepted origin.') + start_response(r['status'], r['headers']) + return [r['response']] + + method = environ['REQUEST_METHOD'] + query = urllib.parse.parse_qs(environ.get('QUERY_STRING', '')) + jsonp = False + jsonp_index = None + + # make sure the client speaks a compatible Engine.IO version + sid = query['sid'][0] if 'sid' in query else None + if sid is None and query.get('EIO') != ['4']: + self._log_error_once( + 'The client is using an unsupported version of the Socket.IO ' + 'or Engine.IO protocols', 'bad-version') + r = self._bad_request( + 'The client is using an unsupported version of the Socket.IO ' + 'or Engine.IO protocols') + start_response(r['status'], r['headers']) + return [r['response']] + + if 'j' in query: + jsonp = True + try: + jsonp_index = int(query['j'][0]) + except (ValueError, KeyError, IndexError): + # Invalid JSONP index number + pass + + if jsonp and jsonp_index is None: + self._log_error_once('Invalid JSONP index number', + 'bad-jsonp-index') + r = self._bad_request('Invalid JSONP index number') + elif method == 'GET': + if sid is None: + transport = query.get('transport', ['polling'])[0] + # transport must be one of 'polling' or 'websocket'. + # if 'websocket', the HTTP_UPGRADE header must match. + upgrade_header = environ.get('HTTP_UPGRADE').lower() \ + if 'HTTP_UPGRADE' in environ else None + if transport == 'polling' \ + or transport == upgrade_header == 'websocket': + r = self._handle_connect(environ, start_response, + transport, jsonp_index) + else: + self._log_error_once('Invalid transport ' + transport, + 'bad-transport') + r = self._bad_request('Invalid transport ' + transport) + else: + if sid not in self.sockets: + self._log_error_once('Invalid session ' + sid, 'bad-sid') + r = self._bad_request('Invalid session ' + sid) + else: + socket = self._get_socket(sid) + try: + packets = socket.handle_get_request( + environ, start_response) + if isinstance(packets, list): + r = self._ok(packets, jsonp_index=jsonp_index) + else: + r = packets + except exceptions.EngineIOError: + if sid in self.sockets: # pragma: no cover + self.disconnect(sid) + r = self._bad_request() + if sid in self.sockets and self.sockets[sid].closed: + del self.sockets[sid] + elif method == 'POST': + if sid is None or sid not in self.sockets: + self._log_error_once('Invalid session ' + sid, 'bad-sid') + r = self._bad_request('Invalid session ' + sid) + else: + socket = self._get_socket(sid) + try: + socket.handle_post_request(environ) + r = self._ok(jsonp_index=jsonp_index) + except exceptions.EngineIOError: + if sid in self.sockets: # pragma: no cover + self.disconnect(sid) + r = self._bad_request() + except: # pragma: no cover + # for any other unexpected errors, we log the error + # and keep going + self.logger.exception('post request handler error') + r = self._ok(jsonp_index=jsonp_index) + elif method == 'OPTIONS': + r = self._ok() + else: + self.logger.warning('Method %s not supported', method) + r = self._method_not_found() + + if not isinstance(r, dict): + return r or [] + if self.http_compression and \ + len(r['response']) >= self.compression_threshold: + encodings = [e.split(';')[0].strip() for e in + environ.get('HTTP_ACCEPT_ENCODING', '').split(',')] + for encoding in encodings: + if encoding in self.compression_methods: + r['response'] = \ + getattr(self, '_' + encoding)(r['response']) + r['headers'] += [('Content-Encoding', encoding)] + break + cors_headers = self._cors_headers(environ) + start_response(r['status'], r['headers'] + cors_headers) + return [r['response']] + + def start_background_task(self, target, *args, **kwargs): + """Start a background task using the appropriate async model. + + This is a utility function that applications can use to start a + background task using the method that is compatible with the + selected async mode. + + :param target: the target function to execute. + :param args: arguments to pass to the function. + :param kwargs: keyword arguments to pass to the function. + + This function returns an object compatible with the `Thread` class in + the Python standard library. The `start()` method on this object is + already called by this function. + """ + th = self._async['thread'](target=target, args=args, kwargs=kwargs) + th.start() + return th # pragma: no cover + + def sleep(self, seconds=0): + """Sleep for the requested amount of time using the appropriate async + model. + + This is a utility function that applications can use to put a task to + sleep without having to worry about using the correct call for the + selected async mode. + """ + return self._async['sleep'](seconds) + + def create_queue(self, *args, **kwargs): + """Create a queue object using the appropriate async model. + + This is a utility function that applications can use to create a queue + without having to worry about using the correct call for the selected + async mode. + """ + return self._async['queue'](*args, **kwargs) + + def get_queue_empty_exception(self): + """Return the queue empty exception for the appropriate async model. + + This is a utility function that applications can use to work with a + queue without having to worry about using the correct call for the + selected async mode. + """ + return self._async['queue_empty'] + + def create_event(self, *args, **kwargs): + """Create an event object using the appropriate async model. + + This is a utility function that applications can use to create an + event without having to worry about using the correct call for the + selected async mode. + """ + return self._async['event'](*args, **kwargs) + + def generate_id(self): + """Generate a unique session id.""" + id = base64.b64encode( + secrets.token_bytes(12) + self.sequence_number.to_bytes(3, 'big')) + self.sequence_number = (self.sequence_number + 1) & 0xffffff + return id.decode('utf-8').replace('/', '_').replace('+', '-') + + def _generate_sid_cookie(self, sid, attributes): + """Generate the sid cookie.""" + cookie = attributes.get('name', 'io') + '=' + sid + for attribute, value in attributes.items(): + if attribute == 'name': + continue + if callable(value): + value = value() + if value is True: + cookie += '; ' + attribute + else: + cookie += '; ' + attribute + '=' + value + return cookie + + def _handle_connect(self, environ, start_response, transport, + jsonp_index=None): + """Handle a client connection request.""" + if self.start_service_task: + # start the service task to monitor connected clients + self.start_service_task = False + self.start_background_task(self._service_task) + + sid = self.generate_id() + s = socket.Socket(self, sid) + self.sockets[sid] = s + + pkt = packet.Packet(packet.OPEN, { + 'sid': sid, + 'upgrades': self._upgrades(sid, transport), + 'pingTimeout': int(self.ping_timeout * 1000), + 'pingInterval': int( + self.ping_interval + self.ping_interval_grace_period) * 1000}) + s.send(pkt) + s.schedule_ping() + + # NOTE: some sections below are marked as "no cover" to workaround + # what seems to be a bug in the coverage package. All the lines below + # are covered by tests, but some are not reported as such for some + # reason + ret = self._trigger_event('connect', sid, environ, run_async=False) + if ret is not None and ret is not True: # pragma: no cover + del self.sockets[sid] + self.logger.warning('Application rejected connection') + return self._unauthorized(ret or None) + + if transport == 'websocket': # pragma: no cover + ret = s.handle_get_request(environ, start_response) + if s.closed and sid in self.sockets: + # websocket connection ended, so we are done + del self.sockets[sid] + return ret + else: # pragma: no cover + s.connected = True + headers = None + if self.cookie: + if isinstance(self.cookie, dict): + headers = [( + 'Set-Cookie', + self._generate_sid_cookie(sid, self.cookie) + )] + else: + headers = [( + 'Set-Cookie', + self._generate_sid_cookie(sid, { + 'name': self.cookie, 'path': '/', 'SameSite': 'Lax' + }) + )] + try: + return self._ok(s.poll(), headers=headers, + jsonp_index=jsonp_index) + except exceptions.QueueEmpty: + return self._bad_request() + + def _upgrades(self, sid, transport): + """Return the list of possible upgrades for a client connection.""" + if not self.allow_upgrades or self._get_socket(sid).upgraded or \ + self._async['websocket'] is None or transport == 'websocket': + return [] + return ['websocket'] + + def _trigger_event(self, event, *args, **kwargs): + """Invoke an event handler.""" + run_async = kwargs.pop('run_async', False) + if event in self.handlers: + if run_async: + return self.start_background_task(self.handlers[event], *args) + else: + try: + return self.handlers[event](*args) + except: + self.logger.exception(event + ' handler error') + if event == 'connect': + # if connect handler raised error we reject the + # connection + return False + + def _get_socket(self, sid): + """Return the socket object for a given session.""" + try: + s = self.sockets[sid] + except KeyError: + raise KeyError('Session not found') + if s.closed: + del self.sockets[sid] + raise KeyError('Session is disconnected') + return s + + def _ok(self, packets=None, headers=None, jsonp_index=None): + """Generate a successful HTTP response.""" + if packets is not None: + if headers is None: + headers = [] + headers += [('Content-Type', 'text/plain; charset=UTF-8')] + return {'status': '200 OK', + 'headers': headers, + 'response': payload.Payload(packets=packets).encode( + jsonp_index=jsonp_index).encode('utf-8')} + else: + return {'status': '200 OK', + 'headers': [('Content-Type', 'text/plain')], + 'response': b'OK'} + + def _bad_request(self, message=None): + """Generate a bad request HTTP error response.""" + if message is None: + message = 'Bad Request' + message = packet.Packet.json.dumps(message) + return {'status': '400 BAD REQUEST', + 'headers': [('Content-Type', 'text/plain')], + 'response': message.encode('utf-8')} + + def _method_not_found(self): + """Generate a method not found HTTP error response.""" + return {'status': '405 METHOD NOT FOUND', + 'headers': [('Content-Type', 'text/plain')], + 'response': b'Method Not Found'} + + def _unauthorized(self, message=None): + """Generate a unauthorized HTTP error response.""" + if message is None: + message = 'Unauthorized' + message = packet.Packet.json.dumps(message) + return {'status': '401 UNAUTHORIZED', + 'headers': [('Content-Type', 'application/json')], + 'response': message.encode('utf-8')} + + def _cors_allowed_origins(self, environ): + default_origins = [] + if 'wsgi.url_scheme' in environ and 'HTTP_HOST' in environ: + default_origins.append('{scheme}://{host}'.format( + scheme=environ['wsgi.url_scheme'], host=environ['HTTP_HOST'])) + if 'HTTP_X_FORWARDED_HOST' in environ: + scheme = environ.get( + 'HTTP_X_FORWARDED_PROTO', + environ['wsgi.url_scheme']).split(',')[0].strip() + default_origins.append('{scheme}://{host}'.format( + scheme=scheme, host=environ['HTTP_X_FORWARDED_HOST'].split( + ',')[0].strip())) + if self.cors_allowed_origins is None: + allowed_origins = default_origins + elif self.cors_allowed_origins == '*': + allowed_origins = None + elif isinstance(self.cors_allowed_origins, str): + allowed_origins = [self.cors_allowed_origins] + else: + allowed_origins = self.cors_allowed_origins + return allowed_origins + + def _cors_headers(self, environ): + """Return the cross-origin-resource-sharing headers.""" + if self.cors_allowed_origins == []: + # special case, CORS handling is completely disabled + return [] + headers = [] + allowed_origins = self._cors_allowed_origins(environ) + if 'HTTP_ORIGIN' in environ and \ + (allowed_origins is None or environ['HTTP_ORIGIN'] in + allowed_origins): + headers = [('Access-Control-Allow-Origin', environ['HTTP_ORIGIN'])] + if environ['REQUEST_METHOD'] == 'OPTIONS': + headers += [('Access-Control-Allow-Methods', 'OPTIONS, GET, POST')] + if 'HTTP_ACCESS_CONTROL_REQUEST_HEADERS' in environ: + headers += [('Access-Control-Allow-Headers', + environ['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])] + if self.cors_credentials: + headers += [('Access-Control-Allow-Credentials', 'true')] + return headers + + def _gzip(self, response): + """Apply gzip compression to a response.""" + bytesio = io.BytesIO() + with gzip.GzipFile(fileobj=bytesio, mode='w') as gz: + gz.write(response) + return bytesio.getvalue() + + def _deflate(self, response): + """Apply deflate compression to a response.""" + return zlib.compress(response) + + def _log_error_once(self, message, message_key): + """Log message with logging.ERROR level the first time, then log + with given level.""" + if message_key not in self.log_message_keys: + self.logger.error(message + ' (further occurrences of this error ' + 'will be logged with level INFO)') + self.log_message_keys.add(message_key) + else: + self.logger.info(message) + + def _service_task(self): # pragma: no cover + """Monitor connected clients and clean up those that time out.""" + while True: + if len(self.sockets) == 0: + # nothing to do + self.sleep(self.ping_timeout) + continue + + # go through the entire client list in a ping interval cycle + sleep_interval = float(self.ping_timeout) / len(self.sockets) + + try: + # iterate over the current clients + for s in self.sockets.copy().values(): + if not s.closing and not s.closed: + s.check_ping_timeout() + self.sleep(sleep_interval) + except (SystemExit, KeyboardInterrupt): + self.logger.info('service task canceled') + break + except: + # an unexpected exception has occurred, log it and continue + self.logger.exception('service task exception') diff --git a/matteo_env/Lib/site-packages/engineio/socket.py b/matteo_env/Lib/site-packages/engineio/socket.py new file mode 100644 index 0000000..1434b19 --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/socket.py @@ -0,0 +1,254 @@ +import sys +import time + +from . import exceptions +from . import packet +from . import payload + + +class Socket(object): + """An Engine.IO socket.""" + upgrade_protocols = ['websocket'] + + def __init__(self, server, sid): + self.server = server + self.sid = sid + self.queue = self.server.create_queue() + self.last_ping = None + self.connected = False + self.upgrading = False + self.upgraded = False + self.closing = False + self.closed = False + self.session = {} + + def poll(self): + """Wait for packets to send to the client.""" + queue_empty = self.server.get_queue_empty_exception() + try: + packets = [self.queue.get( + timeout=self.server.ping_interval + self.server.ping_timeout)] + self.queue.task_done() + except queue_empty: + raise exceptions.QueueEmpty() + if packets == [None]: + return [] + while True: + try: + pkt = self.queue.get(block=False) + self.queue.task_done() + if pkt is None: + self.queue.put(None) + break + packets.append(pkt) + except queue_empty: + break + return packets + + def receive(self, pkt): + """Receive packet from the client.""" + packet_name = packet.packet_names[pkt.packet_type] \ + if pkt.packet_type < len(packet.packet_names) else 'UNKNOWN' + self.server.logger.info('%s: Received packet %s data %s', + self.sid, packet_name, + pkt.data if not isinstance(pkt.data, bytes) + else '') + if pkt.packet_type == packet.PONG: + self.schedule_ping() + elif pkt.packet_type == packet.MESSAGE: + self.server._trigger_event('message', self.sid, pkt.data, + run_async=self.server.async_handlers) + elif pkt.packet_type == packet.UPGRADE: + self.send(packet.Packet(packet.NOOP)) + elif pkt.packet_type == packet.CLOSE: + self.close(wait=False, abort=True) + else: + raise exceptions.UnknownPacketError() + + def check_ping_timeout(self): + """Make sure the client is still responding to pings.""" + if self.closed: + raise exceptions.SocketIsClosedError() + if self.last_ping and \ + time.time() - self.last_ping > self.server.ping_timeout: + self.server.logger.info('%s: Client is gone, closing socket', + self.sid) + # Passing abort=False here will cause close() to write a + # CLOSE packet. This has the effect of updating half-open sockets + # to their correct state of disconnected + self.close(wait=False, abort=False) + return False + return True + + def send(self, pkt): + """Send a packet to the client.""" + if not self.check_ping_timeout(): + return + else: + self.queue.put(pkt) + self.server.logger.info('%s: Sending packet %s data %s', + self.sid, packet.packet_names[pkt.packet_type], + pkt.data if not isinstance(pkt.data, bytes) + else '') + + def handle_get_request(self, environ, start_response): + """Handle a long-polling GET request from the client.""" + connections = [ + s.strip() + for s in environ.get('HTTP_CONNECTION', '').lower().split(',')] + transport = environ.get('HTTP_UPGRADE', '').lower() + if 'upgrade' in connections and transport in self.upgrade_protocols: + self.server.logger.info('%s: Received request to upgrade to %s', + self.sid, transport) + return getattr(self, '_upgrade_' + transport)(environ, + start_response) + if self.upgrading or self.upgraded: + # we are upgrading to WebSocket, do not return any more packets + # through the polling endpoint + return [packet.Packet(packet.NOOP)] + try: + packets = self.poll() + except exceptions.QueueEmpty: + exc = sys.exc_info() + self.close(wait=False) + raise exc[1].with_traceback(exc[2]) + return packets + + def handle_post_request(self, environ): + """Handle a long-polling POST request from the client.""" + length = int(environ.get('CONTENT_LENGTH', '0')) + if length > self.server.max_http_buffer_size: + raise exceptions.ContentTooLongError() + else: + body = environ['wsgi.input'].read(length).decode('utf-8') + p = payload.Payload(encoded_payload=body) + for pkt in p.packets: + self.receive(pkt) + + def close(self, wait=True, abort=False): + """Close the socket connection.""" + if not self.closed and not self.closing: + self.closing = True + self.server._trigger_event('disconnect', self.sid, run_async=False) + if not abort: + self.send(packet.Packet(packet.CLOSE)) + self.closed = True + self.queue.put(None) + if wait: + self.queue.join() + + def schedule_ping(self): + def send_ping(): + self.last_ping = None + self.server.sleep(self.server.ping_interval) + if not self.closing and not self.closed: + self.last_ping = time.time() + self.send(packet.Packet(packet.PING)) + + self.server.start_background_task(send_ping) + + def _upgrade_websocket(self, environ, start_response): + """Upgrade the connection from polling to websocket.""" + if self.upgraded: + raise IOError('Socket has been upgraded already') + if self.server._async['websocket'] is None: + # the selected async mode does not support websocket + return self.server._bad_request() + ws = self.server._async['websocket'](self._websocket_handler) + return ws(environ, start_response) + + def _websocket_handler(self, ws): + """Engine.IO handler for websocket transport.""" + # try to set a socket timeout matching the configured ping interval + # and timeout + for attr in ['_sock', 'socket']: # pragma: no cover + if hasattr(ws, attr) and hasattr(getattr(ws, attr), 'settimeout'): + getattr(ws, attr).settimeout( + self.server.ping_interval + self.server.ping_timeout) + + if self.connected: + # the socket was already connected, so this is an upgrade + self.upgrading = True # hold packet sends during the upgrade + + pkt = ws.wait() + decoded_pkt = packet.Packet(encoded_packet=pkt) + if decoded_pkt.packet_type != packet.PING or \ + decoded_pkt.data != 'probe': + self.server.logger.info( + '%s: Failed websocket upgrade, no PING packet', self.sid) + self.upgrading = False + return [] + ws.send(packet.Packet(packet.PONG, data='probe').encode()) + self.queue.put(packet.Packet(packet.NOOP)) # end poll + + pkt = ws.wait() + decoded_pkt = packet.Packet(encoded_packet=pkt) + if decoded_pkt.packet_type != packet.UPGRADE: + self.upgraded = False + self.server.logger.info( + ('%s: Failed websocket upgrade, expected UPGRADE packet, ' + 'received %s instead.'), + self.sid, pkt) + self.upgrading = False + return [] + self.upgraded = True + self.upgrading = False + else: + self.connected = True + self.upgraded = True + + # start separate writer thread + def writer(): + while True: + packets = None + try: + packets = self.poll() + except exceptions.QueueEmpty: + break + if not packets: + # empty packet list returned -> connection closed + break + try: + for pkt in packets: + ws.send(pkt.encode()) + except: + break + writer_task = self.server.start_background_task(writer) + + self.server.logger.info( + '%s: Upgrade to websocket successful', self.sid) + + while True: + p = None + try: + p = ws.wait() + except Exception as e: + # if the socket is already closed, we can assume this is a + # downstream error of that + if not self.closed: # pragma: no cover + self.server.logger.info( + '%s: Unexpected error "%s", closing connection', + self.sid, str(e)) + break + if p is None: + # connection closed by client + break + pkt = packet.Packet(encoded_packet=p) + try: + self.receive(pkt) + except exceptions.UnknownPacketError: # pragma: no cover + pass + except exceptions.SocketIsClosedError: # pragma: no cover + self.server.logger.info('Receive error -- socket is closed') + break + except: # pragma: no cover + # if we get an unexpected exception we log the error and exit + # the connection properly + self.server.logger.exception('Unknown receive error') + break + + self.queue.put(None) # unlock the writer task so that it can exit + writer_task.join() + self.close(wait=False, abort=True) + + return [] diff --git a/matteo_env/Lib/site-packages/engineio/static_files.py b/matteo_env/Lib/site-packages/engineio/static_files.py new file mode 100644 index 0000000..3058f6e --- /dev/null +++ b/matteo_env/Lib/site-packages/engineio/static_files.py @@ -0,0 +1,55 @@ +content_types = { + 'css': 'text/css', + 'gif': 'image/gif', + 'html': 'text/html', + 'jpg': 'image/jpeg', + 'js': 'application/javascript', + 'json': 'application/json', + 'png': 'image/png', + 'txt': 'text/plain', +} + + +def get_static_file(path, static_files): + """Return the local filename and content type for the requested static + file URL. + + :param path: the path portion of the requested URL. + :param static_files: a static file configuration dictionary. + + This function returns a dictionary with two keys, "filename" and + "content_type". If the requested URL does not match any static file, the + return value is None. + """ + if path in static_files: + f = static_files[path] + else: + f = None + rest = '' + while path != '': + path, last = path.rsplit('/', 1) + rest = '/' + last + rest + if path in static_files: + f = static_files[path] + rest + break + elif path + '/' in static_files: + f = static_files[path + '/'] + rest[1:] + break + if f: + if isinstance(f, str): + f = {'filename': f} + if f['filename'].endswith('/'): + if '' in static_files: + if isinstance(static_files[''], str): + f['filename'] += static_files[''] + else: + f['filename'] += static_files['']['filename'] + if 'content_type' in static_files['']: + f['content_type'] = static_files['']['content_type'] + else: + f['filename'] += 'index.html' + if 'content_type' not in f: + ext = f['filename'].rsplit('.')[-1] + f['content_type'] = content_types.get( + ext, 'application/octet-stream') + return f diff --git a/matteo_env/Lib/site-packages/flask/__init__.py b/matteo_env/Lib/site-packages/flask/__init__.py new file mode 100644 index 0000000..1a487e1 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/__init__.py @@ -0,0 +1,60 @@ +# -*- coding: utf-8 -*- +""" + flask + ~~~~~ + + A microframework based on Werkzeug. It's extensively documented + and follows best practice patterns. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +# utilities we import from Werkzeug and Jinja2 that are unused +# in the module but are exported as public interface. +from jinja2 import escape +from jinja2 import Markup +from werkzeug.exceptions import abort +from werkzeug.utils import redirect + +from . import json +from ._compat import json_available +from .app import Flask +from .app import Request +from .app import Response +from .blueprints import Blueprint +from .config import Config +from .ctx import after_this_request +from .ctx import copy_current_request_context +from .ctx import has_app_context +from .ctx import has_request_context +from .globals import _app_ctx_stack +from .globals import _request_ctx_stack +from .globals import current_app +from .globals import g +from .globals import request +from .globals import session +from .helpers import flash +from .helpers import get_flashed_messages +from .helpers import get_template_attribute +from .helpers import make_response +from .helpers import safe_join +from .helpers import send_file +from .helpers import send_from_directory +from .helpers import stream_with_context +from .helpers import url_for +from .json import jsonify +from .signals import appcontext_popped +from .signals import appcontext_pushed +from .signals import appcontext_tearing_down +from .signals import before_render_template +from .signals import got_request_exception +from .signals import message_flashed +from .signals import request_finished +from .signals import request_started +from .signals import request_tearing_down +from .signals import signals_available +from .signals import template_rendered +from .templating import render_template +from .templating import render_template_string + +__version__ = "1.1.2" diff --git a/matteo_env/Lib/site-packages/flask/__main__.py b/matteo_env/Lib/site-packages/flask/__main__.py new file mode 100644 index 0000000..f61dbc0 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/__main__.py @@ -0,0 +1,15 @@ +# -*- coding: utf-8 -*- +""" + flask.__main__ + ~~~~~~~~~~~~~~ + + Alias for flask.run for the command line. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" + +if __name__ == "__main__": + from .cli import main + + main(as_module=True) diff --git a/matteo_env/Lib/site-packages/flask/_compat.py b/matteo_env/Lib/site-packages/flask/_compat.py new file mode 100644 index 0000000..76c442c --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/_compat.py @@ -0,0 +1,145 @@ +# -*- coding: utf-8 -*- +""" + flask._compat + ~~~~~~~~~~~~~ + + Some py2/py3 compatibility support based on a stripped down + version of six so we don't have to depend on a specific version + of it. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import sys + +PY2 = sys.version_info[0] == 2 +_identity = lambda x: x + +try: # Python 2 + text_type = unicode + string_types = (str, unicode) + integer_types = (int, long) +except NameError: # Python 3 + text_type = str + string_types = (str,) + integer_types = (int,) + +if not PY2: + iterkeys = lambda d: iter(d.keys()) + itervalues = lambda d: iter(d.values()) + iteritems = lambda d: iter(d.items()) + + from inspect import getfullargspec as getargspec + from io import StringIO + import collections.abc as collections_abc + + def reraise(tp, value, tb=None): + if value.__traceback__ is not tb: + raise value.with_traceback(tb) + raise value + + implements_to_string = _identity + +else: + iterkeys = lambda d: d.iterkeys() + itervalues = lambda d: d.itervalues() + iteritems = lambda d: d.iteritems() + + from inspect import getargspec + from cStringIO import StringIO + import collections as collections_abc + + exec("def reraise(tp, value, tb=None):\n raise tp, value, tb") + + def implements_to_string(cls): + cls.__unicode__ = cls.__str__ + cls.__str__ = lambda x: x.__unicode__().encode("utf-8") + return cls + + +def with_metaclass(meta, *bases): + """Create a base class with a metaclass.""" + # This requires a bit of explanation: the basic idea is to make a + # dummy metaclass for one level of class instantiation that replaces + # itself with the actual metaclass. + class metaclass(type): + def __new__(metacls, name, this_bases, d): + return meta(name, bases, d) + + return type.__new__(metaclass, "temporary_class", (), {}) + + +# Certain versions of pypy have a bug where clearing the exception stack +# breaks the __exit__ function in a very peculiar way. The second level of +# exception blocks is necessary because pypy seems to forget to check if an +# exception happened until the next bytecode instruction? +# +# Relevant PyPy bugfix commit: +# https://bitbucket.org/pypy/pypy/commits/77ecf91c635a287e88e60d8ddb0f4e9df4003301 +# According to ronan on #pypy IRC, it is released in PyPy2 2.3 and later +# versions. +# +# Ubuntu 14.04 has PyPy 2.2.1, which does exhibit this bug. +BROKEN_PYPY_CTXMGR_EXIT = False +if hasattr(sys, "pypy_version_info"): + + class _Mgr(object): + def __enter__(self): + return self + + def __exit__(self, *args): + if hasattr(sys, "exc_clear"): + # Python 3 (PyPy3) doesn't have exc_clear + sys.exc_clear() + + try: + try: + with _Mgr(): + raise AssertionError() + except: # noqa: B001 + # We intentionally use a bare except here. See the comment above + # regarding a pypy bug as to why. + raise + except TypeError: + BROKEN_PYPY_CTXMGR_EXIT = True + except AssertionError: + pass + + +try: + from os import fspath +except ImportError: + # Backwards compatibility as proposed in PEP 0519: + # https://www.python.org/dev/peps/pep-0519/#backwards-compatibility + def fspath(path): + return path.__fspath__() if hasattr(path, "__fspath__") else path + + +class _DeprecatedBool(object): + def __init__(self, name, version, value): + self.message = "'{}' is deprecated and will be removed in version {}.".format( + name, version + ) + self.value = value + + def _warn(self): + import warnings + + warnings.warn(self.message, DeprecationWarning, stacklevel=2) + + def __eq__(self, other): + self._warn() + return other == self.value + + def __ne__(self, other): + self._warn() + return other != self.value + + def __bool__(self): + self._warn() + return self.value + + __nonzero__ = __bool__ + + +json_available = _DeprecatedBool("flask.json_available", "2.0.0", True) diff --git a/matteo_env/Lib/site-packages/flask/app.py b/matteo_env/Lib/site-packages/flask/app.py new file mode 100644 index 0000000..e385899 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/app.py @@ -0,0 +1,2467 @@ +# -*- coding: utf-8 -*- +""" + flask.app + ~~~~~~~~~ + + This module implements the central WSGI application object. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import os +import sys +import warnings +from datetime import timedelta +from functools import update_wrapper +from itertools import chain +from threading import Lock + +from werkzeug.datastructures import Headers +from werkzeug.datastructures import ImmutableDict +from werkzeug.exceptions import BadRequest +from werkzeug.exceptions import BadRequestKeyError +from werkzeug.exceptions import default_exceptions +from werkzeug.exceptions import HTTPException +from werkzeug.exceptions import InternalServerError +from werkzeug.exceptions import MethodNotAllowed +from werkzeug.routing import BuildError +from werkzeug.routing import Map +from werkzeug.routing import RequestRedirect +from werkzeug.routing import RoutingException +from werkzeug.routing import Rule +from werkzeug.wrappers import BaseResponse + +from . import cli +from . import json +from ._compat import integer_types +from ._compat import reraise +from ._compat import string_types +from ._compat import text_type +from .config import Config +from .config import ConfigAttribute +from .ctx import _AppCtxGlobals +from .ctx import AppContext +from .ctx import RequestContext +from .globals import _request_ctx_stack +from .globals import g +from .globals import request +from .globals import session +from .helpers import _endpoint_from_view_func +from .helpers import _PackageBoundObject +from .helpers import find_package +from .helpers import get_debug_flag +from .helpers import get_env +from .helpers import get_flashed_messages +from .helpers import get_load_dotenv +from .helpers import locked_cached_property +from .helpers import url_for +from .json import jsonify +from .logging import create_logger +from .sessions import SecureCookieSessionInterface +from .signals import appcontext_tearing_down +from .signals import got_request_exception +from .signals import request_finished +from .signals import request_started +from .signals import request_tearing_down +from .templating import _default_template_ctx_processor +from .templating import DispatchingJinjaLoader +from .templating import Environment +from .wrappers import Request +from .wrappers import Response + +# a singleton sentinel value for parameter defaults +_sentinel = object() + + +def _make_timedelta(value): + if not isinstance(value, timedelta): + return timedelta(seconds=value) + return value + + +def setupmethod(f): + """Wraps a method so that it performs a check in debug mode if the + first request was already handled. + """ + + def wrapper_func(self, *args, **kwargs): + if self.debug and self._got_first_request: + raise AssertionError( + "A setup function was called after the " + "first request was handled. This usually indicates a bug " + "in the application where a module was not imported " + "and decorators or other functionality was called too late.\n" + "To fix this make sure to import all your view modules, " + "database models and everything related at a central place " + "before the application starts serving requests." + ) + return f(self, *args, **kwargs) + + return update_wrapper(wrapper_func, f) + + +class Flask(_PackageBoundObject): + """The flask object implements a WSGI application and acts as the central + object. It is passed the name of the module or package of the + application. Once it is created it will act as a central registry for + the view functions, the URL rules, template configuration and much more. + + The name of the package is used to resolve resources from inside the + package or the folder the module is contained in depending on if the + package parameter resolves to an actual python package (a folder with + an :file:`__init__.py` file inside) or a standard module (just a ``.py`` file). + + For more information about resource loading, see :func:`open_resource`. + + Usually you create a :class:`Flask` instance in your main module or + in the :file:`__init__.py` file of your package like this:: + + from flask import Flask + app = Flask(__name__) + + .. admonition:: About the First Parameter + + The idea of the first parameter is to give Flask an idea of what + belongs to your application. This name is used to find resources + on the filesystem, can be used by extensions to improve debugging + information and a lot more. + + So it's important what you provide there. If you are using a single + module, `__name__` is always the correct value. If you however are + using a package, it's usually recommended to hardcode the name of + your package there. + + For example if your application is defined in :file:`yourapplication/app.py` + you should create it with one of the two versions below:: + + app = Flask('yourapplication') + app = Flask(__name__.split('.')[0]) + + Why is that? The application will work even with `__name__`, thanks + to how resources are looked up. However it will make debugging more + painful. Certain extensions can make assumptions based on the + import name of your application. For example the Flask-SQLAlchemy + extension will look for the code in your application that triggered + an SQL query in debug mode. If the import name is not properly set + up, that debugging information is lost. (For example it would only + pick up SQL queries in `yourapplication.app` and not + `yourapplication.views.frontend`) + + .. versionadded:: 0.7 + The `static_url_path`, `static_folder`, and `template_folder` + parameters were added. + + .. versionadded:: 0.8 + The `instance_path` and `instance_relative_config` parameters were + added. + + .. versionadded:: 0.11 + The `root_path` parameter was added. + + .. versionadded:: 1.0 + The ``host_matching`` and ``static_host`` parameters were added. + + .. versionadded:: 1.0 + The ``subdomain_matching`` parameter was added. Subdomain + matching needs to be enabled manually now. Setting + :data:`SERVER_NAME` does not implicitly enable it. + + :param import_name: the name of the application package + :param static_url_path: can be used to specify a different path for the + static files on the web. Defaults to the name + of the `static_folder` folder. + :param static_folder: The folder with static files that is served at + ``static_url_path``. Relative to the application ``root_path`` + or an absolute path. Defaults to ``'static'``. + :param static_host: the host to use when adding the static route. + Defaults to None. Required when using ``host_matching=True`` + with a ``static_folder`` configured. + :param host_matching: set ``url_map.host_matching`` attribute. + Defaults to False. + :param subdomain_matching: consider the subdomain relative to + :data:`SERVER_NAME` when matching routes. Defaults to False. + :param template_folder: the folder that contains the templates that should + be used by the application. Defaults to + ``'templates'`` folder in the root path of the + application. + :param instance_path: An alternative instance path for the application. + By default the folder ``'instance'`` next to the + package or module is assumed to be the instance + path. + :param instance_relative_config: if set to ``True`` relative filenames + for loading the config are assumed to + be relative to the instance path instead + of the application root. + :param root_path: Flask by default will automatically calculate the path + to the root of the application. In certain situations + this cannot be achieved (for instance if the package + is a Python 3 namespace package) and needs to be + manually defined. + """ + + #: The class that is used for request objects. See :class:`~flask.Request` + #: for more information. + request_class = Request + + #: The class that is used for response objects. See + #: :class:`~flask.Response` for more information. + response_class = Response + + #: The class that is used for the Jinja environment. + #: + #: .. versionadded:: 0.11 + jinja_environment = Environment + + #: The class that is used for the :data:`~flask.g` instance. + #: + #: Example use cases for a custom class: + #: + #: 1. Store arbitrary attributes on flask.g. + #: 2. Add a property for lazy per-request database connectors. + #: 3. Return None instead of AttributeError on unexpected attributes. + #: 4. Raise exception if an unexpected attr is set, a "controlled" flask.g. + #: + #: In Flask 0.9 this property was called `request_globals_class` but it + #: was changed in 0.10 to :attr:`app_ctx_globals_class` because the + #: flask.g object is now application context scoped. + #: + #: .. versionadded:: 0.10 + app_ctx_globals_class = _AppCtxGlobals + + #: The class that is used for the ``config`` attribute of this app. + #: Defaults to :class:`~flask.Config`. + #: + #: Example use cases for a custom class: + #: + #: 1. Default values for certain config options. + #: 2. Access to config values through attributes in addition to keys. + #: + #: .. versionadded:: 0.11 + config_class = Config + + #: The testing flag. Set this to ``True`` to enable the test mode of + #: Flask extensions (and in the future probably also Flask itself). + #: For example this might activate test helpers that have an + #: additional runtime cost which should not be enabled by default. + #: + #: If this is enabled and PROPAGATE_EXCEPTIONS is not changed from the + #: default it's implicitly enabled. + #: + #: This attribute can also be configured from the config with the + #: ``TESTING`` configuration key. Defaults to ``False``. + testing = ConfigAttribute("TESTING") + + #: If a secret key is set, cryptographic components can use this to + #: sign cookies and other things. Set this to a complex random value + #: when you want to use the secure cookie for instance. + #: + #: This attribute can also be configured from the config with the + #: :data:`SECRET_KEY` configuration key. Defaults to ``None``. + secret_key = ConfigAttribute("SECRET_KEY") + + #: The secure cookie uses this for the name of the session cookie. + #: + #: This attribute can also be configured from the config with the + #: ``SESSION_COOKIE_NAME`` configuration key. Defaults to ``'session'`` + session_cookie_name = ConfigAttribute("SESSION_COOKIE_NAME") + + #: A :class:`~datetime.timedelta` which is used to set the expiration + #: date of a permanent session. The default is 31 days which makes a + #: permanent session survive for roughly one month. + #: + #: This attribute can also be configured from the config with the + #: ``PERMANENT_SESSION_LIFETIME`` configuration key. Defaults to + #: ``timedelta(days=31)`` + permanent_session_lifetime = ConfigAttribute( + "PERMANENT_SESSION_LIFETIME", get_converter=_make_timedelta + ) + + #: A :class:`~datetime.timedelta` which is used as default cache_timeout + #: for the :func:`send_file` functions. The default is 12 hours. + #: + #: This attribute can also be configured from the config with the + #: ``SEND_FILE_MAX_AGE_DEFAULT`` configuration key. This configuration + #: variable can also be set with an integer value used as seconds. + #: Defaults to ``timedelta(hours=12)`` + send_file_max_age_default = ConfigAttribute( + "SEND_FILE_MAX_AGE_DEFAULT", get_converter=_make_timedelta + ) + + #: Enable this if you want to use the X-Sendfile feature. Keep in + #: mind that the server has to support this. This only affects files + #: sent with the :func:`send_file` method. + #: + #: .. versionadded:: 0.2 + #: + #: This attribute can also be configured from the config with the + #: ``USE_X_SENDFILE`` configuration key. Defaults to ``False``. + use_x_sendfile = ConfigAttribute("USE_X_SENDFILE") + + #: The JSON encoder class to use. Defaults to :class:`~flask.json.JSONEncoder`. + #: + #: .. versionadded:: 0.10 + json_encoder = json.JSONEncoder + + #: The JSON decoder class to use. Defaults to :class:`~flask.json.JSONDecoder`. + #: + #: .. versionadded:: 0.10 + json_decoder = json.JSONDecoder + + #: Options that are passed to the Jinja environment in + #: :meth:`create_jinja_environment`. Changing these options after + #: the environment is created (accessing :attr:`jinja_env`) will + #: have no effect. + #: + #: .. versionchanged:: 1.1.0 + #: This is a ``dict`` instead of an ``ImmutableDict`` to allow + #: easier configuration. + #: + jinja_options = {"extensions": ["jinja2.ext.autoescape", "jinja2.ext.with_"]} + + #: Default configuration parameters. + default_config = ImmutableDict( + { + "ENV": None, + "DEBUG": None, + "TESTING": False, + "PROPAGATE_EXCEPTIONS": None, + "PRESERVE_CONTEXT_ON_EXCEPTION": None, + "SECRET_KEY": None, + "PERMANENT_SESSION_LIFETIME": timedelta(days=31), + "USE_X_SENDFILE": False, + "SERVER_NAME": None, + "APPLICATION_ROOT": "/", + "SESSION_COOKIE_NAME": "session", + "SESSION_COOKIE_DOMAIN": None, + "SESSION_COOKIE_PATH": None, + "SESSION_COOKIE_HTTPONLY": True, + "SESSION_COOKIE_SECURE": False, + "SESSION_COOKIE_SAMESITE": None, + "SESSION_REFRESH_EACH_REQUEST": True, + "MAX_CONTENT_LENGTH": None, + "SEND_FILE_MAX_AGE_DEFAULT": timedelta(hours=12), + "TRAP_BAD_REQUEST_ERRORS": None, + "TRAP_HTTP_EXCEPTIONS": False, + "EXPLAIN_TEMPLATE_LOADING": False, + "PREFERRED_URL_SCHEME": "http", + "JSON_AS_ASCII": True, + "JSON_SORT_KEYS": True, + "JSONIFY_PRETTYPRINT_REGULAR": False, + "JSONIFY_MIMETYPE": "application/json", + "TEMPLATES_AUTO_RELOAD": None, + "MAX_COOKIE_SIZE": 4093, + } + ) + + #: The rule object to use for URL rules created. This is used by + #: :meth:`add_url_rule`. Defaults to :class:`werkzeug.routing.Rule`. + #: + #: .. versionadded:: 0.7 + url_rule_class = Rule + + #: The map object to use for storing the URL rules and routing + #: configuration parameters. Defaults to :class:`werkzeug.routing.Map`. + #: + #: .. versionadded:: 1.1.0 + url_map_class = Map + + #: the test client that is used with when `test_client` is used. + #: + #: .. versionadded:: 0.7 + test_client_class = None + + #: The :class:`~click.testing.CliRunner` subclass, by default + #: :class:`~flask.testing.FlaskCliRunner` that is used by + #: :meth:`test_cli_runner`. Its ``__init__`` method should take a + #: Flask app object as the first argument. + #: + #: .. versionadded:: 1.0 + test_cli_runner_class = None + + #: the session interface to use. By default an instance of + #: :class:`~flask.sessions.SecureCookieSessionInterface` is used here. + #: + #: .. versionadded:: 0.8 + session_interface = SecureCookieSessionInterface() + + # TODO remove the next three attrs when Sphinx :inherited-members: works + # https://github.com/sphinx-doc/sphinx/issues/741 + + #: The name of the package or module that this app belongs to. Do not + #: change this once it is set by the constructor. + import_name = None + + #: Location of the template files to be added to the template lookup. + #: ``None`` if templates should not be added. + template_folder = None + + #: Absolute path to the package on the filesystem. Used to look up + #: resources contained in the package. + root_path = None + + def __init__( + self, + import_name, + static_url_path=None, + static_folder="static", + static_host=None, + host_matching=False, + subdomain_matching=False, + template_folder="templates", + instance_path=None, + instance_relative_config=False, + root_path=None, + ): + _PackageBoundObject.__init__( + self, import_name, template_folder=template_folder, root_path=root_path + ) + + self.static_url_path = static_url_path + self.static_folder = static_folder + + if instance_path is None: + instance_path = self.auto_find_instance_path() + elif not os.path.isabs(instance_path): + raise ValueError( + "If an instance path is provided it must be absolute." + " A relative path was given instead." + ) + + #: Holds the path to the instance folder. + #: + #: .. versionadded:: 0.8 + self.instance_path = instance_path + + #: The configuration dictionary as :class:`Config`. This behaves + #: exactly like a regular dictionary but supports additional methods + #: to load a config from files. + self.config = self.make_config(instance_relative_config) + + #: A dictionary of all view functions registered. The keys will + #: be function names which are also used to generate URLs and + #: the values are the function objects themselves. + #: To register a view function, use the :meth:`route` decorator. + self.view_functions = {} + + #: A dictionary of all registered error handlers. The key is ``None`` + #: for error handlers active on the application, otherwise the key is + #: the name of the blueprint. Each key points to another dictionary + #: where the key is the status code of the http exception. The + #: special key ``None`` points to a list of tuples where the first item + #: is the class for the instance check and the second the error handler + #: function. + #: + #: To register an error handler, use the :meth:`errorhandler` + #: decorator. + self.error_handler_spec = {} + + #: A list of functions that are called when :meth:`url_for` raises a + #: :exc:`~werkzeug.routing.BuildError`. Each function registered here + #: is called with `error`, `endpoint` and `values`. If a function + #: returns ``None`` or raises a :exc:`BuildError` the next function is + #: tried. + #: + #: .. versionadded:: 0.9 + self.url_build_error_handlers = [] + + #: A dictionary with lists of functions that will be called at the + #: beginning of each request. The key of the dictionary is the name of + #: the blueprint this function is active for, or ``None`` for all + #: requests. To register a function, use the :meth:`before_request` + #: decorator. + self.before_request_funcs = {} + + #: A list of functions that will be called at the beginning of the + #: first request to this instance. To register a function, use the + #: :meth:`before_first_request` decorator. + #: + #: .. versionadded:: 0.8 + self.before_first_request_funcs = [] + + #: A dictionary with lists of functions that should be called after + #: each request. The key of the dictionary is the name of the blueprint + #: this function is active for, ``None`` for all requests. This can for + #: example be used to close database connections. To register a function + #: here, use the :meth:`after_request` decorator. + self.after_request_funcs = {} + + #: A dictionary with lists of functions that are called after + #: each request, even if an exception has occurred. The key of the + #: dictionary is the name of the blueprint this function is active for, + #: ``None`` for all requests. These functions are not allowed to modify + #: the request, and their return values are ignored. If an exception + #: occurred while processing the request, it gets passed to each + #: teardown_request function. To register a function here, use the + #: :meth:`teardown_request` decorator. + #: + #: .. versionadded:: 0.7 + self.teardown_request_funcs = {} + + #: A list of functions that are called when the application context + #: is destroyed. Since the application context is also torn down + #: if the request ends this is the place to store code that disconnects + #: from databases. + #: + #: .. versionadded:: 0.9 + self.teardown_appcontext_funcs = [] + + #: A dictionary with lists of functions that are called before the + #: :attr:`before_request_funcs` functions. The key of the dictionary is + #: the name of the blueprint this function is active for, or ``None`` + #: for all requests. To register a function, use + #: :meth:`url_value_preprocessor`. + #: + #: .. versionadded:: 0.7 + self.url_value_preprocessors = {} + + #: A dictionary with lists of functions that can be used as URL value + #: preprocessors. The key ``None`` here is used for application wide + #: callbacks, otherwise the key is the name of the blueprint. + #: Each of these functions has the chance to modify the dictionary + #: of URL values before they are used as the keyword arguments of the + #: view function. For each function registered this one should also + #: provide a :meth:`url_defaults` function that adds the parameters + #: automatically again that were removed that way. + #: + #: .. versionadded:: 0.7 + self.url_default_functions = {} + + #: A dictionary with list of functions that are called without argument + #: to populate the template context. The key of the dictionary is the + #: name of the blueprint this function is active for, ``None`` for all + #: requests. Each returns a dictionary that the template context is + #: updated with. To register a function here, use the + #: :meth:`context_processor` decorator. + self.template_context_processors = {None: [_default_template_ctx_processor]} + + #: A list of shell context processor functions that should be run + #: when a shell context is created. + #: + #: .. versionadded:: 0.11 + self.shell_context_processors = [] + + #: all the attached blueprints in a dictionary by name. Blueprints + #: can be attached multiple times so this dictionary does not tell + #: you how often they got attached. + #: + #: .. versionadded:: 0.7 + self.blueprints = {} + self._blueprint_order = [] + + #: a place where extensions can store application specific state. For + #: example this is where an extension could store database engines and + #: similar things. For backwards compatibility extensions should register + #: themselves like this:: + #: + #: if not hasattr(app, 'extensions'): + #: app.extensions = {} + #: app.extensions['extensionname'] = SomeObject() + #: + #: The key must match the name of the extension module. For example in + #: case of a "Flask-Foo" extension in `flask_foo`, the key would be + #: ``'foo'``. + #: + #: .. versionadded:: 0.7 + self.extensions = {} + + #: The :class:`~werkzeug.routing.Map` for this instance. You can use + #: this to change the routing converters after the class was created + #: but before any routes are connected. Example:: + #: + #: from werkzeug.routing import BaseConverter + #: + #: class ListConverter(BaseConverter): + #: def to_python(self, value): + #: return value.split(',') + #: def to_url(self, values): + #: return ','.join(super(ListConverter, self).to_url(value) + #: for value in values) + #: + #: app = Flask(__name__) + #: app.url_map.converters['list'] = ListConverter + self.url_map = self.url_map_class() + + self.url_map.host_matching = host_matching + self.subdomain_matching = subdomain_matching + + # tracks internally if the application already handled at least one + # request. + self._got_first_request = False + self._before_request_lock = Lock() + + # Add a static route using the provided static_url_path, static_host, + # and static_folder if there is a configured static_folder. + # Note we do this without checking if static_folder exists. + # For one, it might be created while the server is running (e.g. during + # development). Also, Google App Engine stores static files somewhere + if self.has_static_folder: + assert ( + bool(static_host) == host_matching + ), "Invalid static_host/host_matching combination" + self.add_url_rule( + self.static_url_path + "/", + endpoint="static", + host=static_host, + view_func=self.send_static_file, + ) + + # Set the name of the Click group in case someone wants to add + # the app's commands to another CLI tool. + self.cli.name = self.name + + @locked_cached_property + def name(self): + """The name of the application. This is usually the import name + with the difference that it's guessed from the run file if the + import name is main. This name is used as a display name when + Flask needs the name of the application. It can be set and overridden + to change the value. + + .. versionadded:: 0.8 + """ + if self.import_name == "__main__": + fn = getattr(sys.modules["__main__"], "__file__", None) + if fn is None: + return "__main__" + return os.path.splitext(os.path.basename(fn))[0] + return self.import_name + + @property + def propagate_exceptions(self): + """Returns the value of the ``PROPAGATE_EXCEPTIONS`` configuration + value in case it's set, otherwise a sensible default is returned. + + .. versionadded:: 0.7 + """ + rv = self.config["PROPAGATE_EXCEPTIONS"] + if rv is not None: + return rv + return self.testing or self.debug + + @property + def preserve_context_on_exception(self): + """Returns the value of the ``PRESERVE_CONTEXT_ON_EXCEPTION`` + configuration value in case it's set, otherwise a sensible default + is returned. + + .. versionadded:: 0.7 + """ + rv = self.config["PRESERVE_CONTEXT_ON_EXCEPTION"] + if rv is not None: + return rv + return self.debug + + @locked_cached_property + def logger(self): + """A standard Python :class:`~logging.Logger` for the app, with + the same name as :attr:`name`. + + In debug mode, the logger's :attr:`~logging.Logger.level` will + be set to :data:`~logging.DEBUG`. + + If there are no handlers configured, a default handler will be + added. See :doc:`/logging` for more information. + + .. versionchanged:: 1.1.0 + The logger takes the same name as :attr:`name` rather than + hard-coding ``"flask.app"``. + + .. versionchanged:: 1.0.0 + Behavior was simplified. The logger is always named + ``"flask.app"``. The level is only set during configuration, + it doesn't check ``app.debug`` each time. Only one format is + used, not different ones depending on ``app.debug``. No + handlers are removed, and a handler is only added if no + handlers are already configured. + + .. versionadded:: 0.3 + """ + return create_logger(self) + + @locked_cached_property + def jinja_env(self): + """The Jinja environment used to load templates. + + The environment is created the first time this property is + accessed. Changing :attr:`jinja_options` after that will have no + effect. + """ + return self.create_jinja_environment() + + @property + def got_first_request(self): + """This attribute is set to ``True`` if the application started + handling the first request. + + .. versionadded:: 0.8 + """ + return self._got_first_request + + def make_config(self, instance_relative=False): + """Used to create the config attribute by the Flask constructor. + The `instance_relative` parameter is passed in from the constructor + of Flask (there named `instance_relative_config`) and indicates if + the config should be relative to the instance path or the root path + of the application. + + .. versionadded:: 0.8 + """ + root_path = self.root_path + if instance_relative: + root_path = self.instance_path + defaults = dict(self.default_config) + defaults["ENV"] = get_env() + defaults["DEBUG"] = get_debug_flag() + return self.config_class(root_path, defaults) + + def auto_find_instance_path(self): + """Tries to locate the instance path if it was not provided to the + constructor of the application class. It will basically calculate + the path to a folder named ``instance`` next to your main file or + the package. + + .. versionadded:: 0.8 + """ + prefix, package_path = find_package(self.import_name) + if prefix is None: + return os.path.join(package_path, "instance") + return os.path.join(prefix, "var", self.name + "-instance") + + def open_instance_resource(self, resource, mode="rb"): + """Opens a resource from the application's instance folder + (:attr:`instance_path`). Otherwise works like + :meth:`open_resource`. Instance resources can also be opened for + writing. + + :param resource: the name of the resource. To access resources within + subfolders use forward slashes as separator. + :param mode: resource file opening mode, default is 'rb'. + """ + return open(os.path.join(self.instance_path, resource), mode) + + @property + def templates_auto_reload(self): + """Reload templates when they are changed. Used by + :meth:`create_jinja_environment`. + + This attribute can be configured with :data:`TEMPLATES_AUTO_RELOAD`. If + not set, it will be enabled in debug mode. + + .. versionadded:: 1.0 + This property was added but the underlying config and behavior + already existed. + """ + rv = self.config["TEMPLATES_AUTO_RELOAD"] + return rv if rv is not None else self.debug + + @templates_auto_reload.setter + def templates_auto_reload(self, value): + self.config["TEMPLATES_AUTO_RELOAD"] = value + + def create_jinja_environment(self): + """Create the Jinja environment based on :attr:`jinja_options` + and the various Jinja-related methods of the app. Changing + :attr:`jinja_options` after this will have no effect. Also adds + Flask-related globals and filters to the environment. + + .. versionchanged:: 0.11 + ``Environment.auto_reload`` set in accordance with + ``TEMPLATES_AUTO_RELOAD`` configuration option. + + .. versionadded:: 0.5 + """ + options = dict(self.jinja_options) + + if "autoescape" not in options: + options["autoescape"] = self.select_jinja_autoescape + + if "auto_reload" not in options: + options["auto_reload"] = self.templates_auto_reload + + rv = self.jinja_environment(self, **options) + rv.globals.update( + url_for=url_for, + get_flashed_messages=get_flashed_messages, + config=self.config, + # request, session and g are normally added with the + # context processor for efficiency reasons but for imported + # templates we also want the proxies in there. + request=request, + session=session, + g=g, + ) + rv.filters["tojson"] = json.tojson_filter + return rv + + def create_global_jinja_loader(self): + """Creates the loader for the Jinja2 environment. Can be used to + override just the loader and keeping the rest unchanged. It's + discouraged to override this function. Instead one should override + the :meth:`jinja_loader` function instead. + + The global loader dispatches between the loaders of the application + and the individual blueprints. + + .. versionadded:: 0.7 + """ + return DispatchingJinjaLoader(self) + + def select_jinja_autoescape(self, filename): + """Returns ``True`` if autoescaping should be active for the given + template name. If no template name is given, returns `True`. + + .. versionadded:: 0.5 + """ + if filename is None: + return True + return filename.endswith((".html", ".htm", ".xml", ".xhtml")) + + def update_template_context(self, context): + """Update the template context with some commonly used variables. + This injects request, session, config and g into the template + context as well as everything template context processors want + to inject. Note that the as of Flask 0.6, the original values + in the context will not be overridden if a context processor + decides to return a value with the same key. + + :param context: the context as a dictionary that is updated in place + to add extra variables. + """ + funcs = self.template_context_processors[None] + reqctx = _request_ctx_stack.top + if reqctx is not None: + bp = reqctx.request.blueprint + if bp is not None and bp in self.template_context_processors: + funcs = chain(funcs, self.template_context_processors[bp]) + orig_ctx = context.copy() + for func in funcs: + context.update(func()) + # make sure the original values win. This makes it possible to + # easier add new variables in context processors without breaking + # existing views. + context.update(orig_ctx) + + def make_shell_context(self): + """Returns the shell context for an interactive shell for this + application. This runs all the registered shell context + processors. + + .. versionadded:: 0.11 + """ + rv = {"app": self, "g": g} + for processor in self.shell_context_processors: + rv.update(processor()) + return rv + + #: What environment the app is running in. Flask and extensions may + #: enable behaviors based on the environment, such as enabling debug + #: mode. This maps to the :data:`ENV` config key. This is set by the + #: :envvar:`FLASK_ENV` environment variable and may not behave as + #: expected if set in code. + #: + #: **Do not enable development when deploying in production.** + #: + #: Default: ``'production'`` + env = ConfigAttribute("ENV") + + @property + def debug(self): + """Whether debug mode is enabled. When using ``flask run`` to start + the development server, an interactive debugger will be shown for + unhandled exceptions, and the server will be reloaded when code + changes. This maps to the :data:`DEBUG` config key. This is + enabled when :attr:`env` is ``'development'`` and is overridden + by the ``FLASK_DEBUG`` environment variable. It may not behave as + expected if set in code. + + **Do not enable debug mode when deploying in production.** + + Default: ``True`` if :attr:`env` is ``'development'``, or + ``False`` otherwise. + """ + return self.config["DEBUG"] + + @debug.setter + def debug(self, value): + self.config["DEBUG"] = value + self.jinja_env.auto_reload = self.templates_auto_reload + + def run(self, host=None, port=None, debug=None, load_dotenv=True, **options): + """Runs the application on a local development server. + + Do not use ``run()`` in a production setting. It is not intended to + meet security and performance requirements for a production server. + Instead, see :ref:`deployment` for WSGI server recommendations. + + If the :attr:`debug` flag is set the server will automatically reload + for code changes and show a debugger in case an exception happened. + + If you want to run the application in debug mode, but disable the + code execution on the interactive debugger, you can pass + ``use_evalex=False`` as parameter. This will keep the debugger's + traceback screen active, but disable code execution. + + It is not recommended to use this function for development with + automatic reloading as this is badly supported. Instead you should + be using the :command:`flask` command line script's ``run`` support. + + .. admonition:: Keep in Mind + + Flask will suppress any server error with a generic error page + unless it is in debug mode. As such to enable just the + interactive debugger without the code reloading, you have to + invoke :meth:`run` with ``debug=True`` and ``use_reloader=False``. + Setting ``use_debugger`` to ``True`` without being in debug mode + won't catch any exceptions because there won't be any to + catch. + + :param host: the hostname to listen on. Set this to ``'0.0.0.0'`` to + have the server available externally as well. Defaults to + ``'127.0.0.1'`` or the host in the ``SERVER_NAME`` config variable + if present. + :param port: the port of the webserver. Defaults to ``5000`` or the + port defined in the ``SERVER_NAME`` config variable if present. + :param debug: if given, enable or disable debug mode. See + :attr:`debug`. + :param load_dotenv: Load the nearest :file:`.env` and :file:`.flaskenv` + files to set environment variables. Will also change the working + directory to the directory containing the first file found. + :param options: the options to be forwarded to the underlying Werkzeug + server. See :func:`werkzeug.serving.run_simple` for more + information. + + .. versionchanged:: 1.0 + If installed, python-dotenv will be used to load environment + variables from :file:`.env` and :file:`.flaskenv` files. + + If set, the :envvar:`FLASK_ENV` and :envvar:`FLASK_DEBUG` + environment variables will override :attr:`env` and + :attr:`debug`. + + Threaded mode is enabled by default. + + .. versionchanged:: 0.10 + The default port is now picked from the ``SERVER_NAME`` + variable. + """ + # Change this into a no-op if the server is invoked from the + # command line. Have a look at cli.py for more information. + if os.environ.get("FLASK_RUN_FROM_CLI") == "true": + from .debughelpers import explain_ignored_app_run + + explain_ignored_app_run() + return + + if get_load_dotenv(load_dotenv): + cli.load_dotenv() + + # if set, let env vars override previous values + if "FLASK_ENV" in os.environ: + self.env = get_env() + self.debug = get_debug_flag() + elif "FLASK_DEBUG" in os.environ: + self.debug = get_debug_flag() + + # debug passed to method overrides all other sources + if debug is not None: + self.debug = bool(debug) + + _host = "127.0.0.1" + _port = 5000 + server_name = self.config.get("SERVER_NAME") + sn_host, sn_port = None, None + + if server_name: + sn_host, _, sn_port = server_name.partition(":") + + host = host or sn_host or _host + # pick the first value that's not None (0 is allowed) + port = int(next((p for p in (port, sn_port) if p is not None), _port)) + + options.setdefault("use_reloader", self.debug) + options.setdefault("use_debugger", self.debug) + options.setdefault("threaded", True) + + cli.show_server_banner(self.env, self.debug, self.name, False) + + from werkzeug.serving import run_simple + + try: + run_simple(host, port, self, **options) + finally: + # reset the first request information if the development server + # reset normally. This makes it possible to restart the server + # without reloader and that stuff from an interactive shell. + self._got_first_request = False + + def test_client(self, use_cookies=True, **kwargs): + """Creates a test client for this application. For information + about unit testing head over to :ref:`testing`. + + Note that if you are testing for assertions or exceptions in your + application code, you must set ``app.testing = True`` in order for the + exceptions to propagate to the test client. Otherwise, the exception + will be handled by the application (not visible to the test client) and + the only indication of an AssertionError or other exception will be a + 500 status code response to the test client. See the :attr:`testing` + attribute. For example:: + + app.testing = True + client = app.test_client() + + The test client can be used in a ``with`` block to defer the closing down + of the context until the end of the ``with`` block. This is useful if + you want to access the context locals for testing:: + + with app.test_client() as c: + rv = c.get('/?vodka=42') + assert request.args['vodka'] == '42' + + Additionally, you may pass optional keyword arguments that will then + be passed to the application's :attr:`test_client_class` constructor. + For example:: + + from flask.testing import FlaskClient + + class CustomClient(FlaskClient): + def __init__(self, *args, **kwargs): + self._authentication = kwargs.pop("authentication") + super(CustomClient,self).__init__( *args, **kwargs) + + app.test_client_class = CustomClient + client = app.test_client(authentication='Basic ....') + + See :class:`~flask.testing.FlaskClient` for more information. + + .. versionchanged:: 0.4 + added support for ``with`` block usage for the client. + + .. versionadded:: 0.7 + The `use_cookies` parameter was added as well as the ability + to override the client to be used by setting the + :attr:`test_client_class` attribute. + + .. versionchanged:: 0.11 + Added `**kwargs` to support passing additional keyword arguments to + the constructor of :attr:`test_client_class`. + """ + cls = self.test_client_class + if cls is None: + from .testing import FlaskClient as cls + return cls(self, self.response_class, use_cookies=use_cookies, **kwargs) + + def test_cli_runner(self, **kwargs): + """Create a CLI runner for testing CLI commands. + See :ref:`testing-cli`. + + Returns an instance of :attr:`test_cli_runner_class`, by default + :class:`~flask.testing.FlaskCliRunner`. The Flask app object is + passed as the first argument. + + .. versionadded:: 1.0 + """ + cls = self.test_cli_runner_class + + if cls is None: + from .testing import FlaskCliRunner as cls + + return cls(self, **kwargs) + + def open_session(self, request): + """Creates or opens a new session. Default implementation stores all + session data in a signed cookie. This requires that the + :attr:`secret_key` is set. Instead of overriding this method + we recommend replacing the :class:`session_interface`. + + .. deprecated: 1.0 + Will be removed in 2.0. Use + ``session_interface.open_session`` instead. + + :param request: an instance of :attr:`request_class`. + """ + + warnings.warn( + DeprecationWarning( + '"open_session" is deprecated and will be removed in' + ' 2.0. Use "session_interface.open_session" instead.' + ) + ) + return self.session_interface.open_session(self, request) + + def save_session(self, session, response): + """Saves the session if it needs updates. For the default + implementation, check :meth:`open_session`. Instead of overriding this + method we recommend replacing the :class:`session_interface`. + + .. deprecated: 1.0 + Will be removed in 2.0. Use + ``session_interface.save_session`` instead. + + :param session: the session to be saved (a + :class:`~werkzeug.contrib.securecookie.SecureCookie` + object) + :param response: an instance of :attr:`response_class` + """ + + warnings.warn( + DeprecationWarning( + '"save_session" is deprecated and will be removed in' + ' 2.0. Use "session_interface.save_session" instead.' + ) + ) + return self.session_interface.save_session(self, session, response) + + def make_null_session(self): + """Creates a new instance of a missing session. Instead of overriding + this method we recommend replacing the :class:`session_interface`. + + .. deprecated: 1.0 + Will be removed in 2.0. Use + ``session_interface.make_null_session`` instead. + + .. versionadded:: 0.7 + """ + + warnings.warn( + DeprecationWarning( + '"make_null_session" is deprecated and will be removed' + ' in 2.0. Use "session_interface.make_null_session"' + " instead." + ) + ) + return self.session_interface.make_null_session(self) + + @setupmethod + def register_blueprint(self, blueprint, **options): + """Register a :class:`~flask.Blueprint` on the application. Keyword + arguments passed to this method will override the defaults set on the + blueprint. + + Calls the blueprint's :meth:`~flask.Blueprint.register` method after + recording the blueprint in the application's :attr:`blueprints`. + + :param blueprint: The blueprint to register. + :param url_prefix: Blueprint routes will be prefixed with this. + :param subdomain: Blueprint routes will match on this subdomain. + :param url_defaults: Blueprint routes will use these default values for + view arguments. + :param options: Additional keyword arguments are passed to + :class:`~flask.blueprints.BlueprintSetupState`. They can be + accessed in :meth:`~flask.Blueprint.record` callbacks. + + .. versionadded:: 0.7 + """ + first_registration = False + + if blueprint.name in self.blueprints: + assert self.blueprints[blueprint.name] is blueprint, ( + "A name collision occurred between blueprints %r and %r. Both" + ' share the same name "%s". Blueprints that are created on the' + " fly need unique names." + % (blueprint, self.blueprints[blueprint.name], blueprint.name) + ) + else: + self.blueprints[blueprint.name] = blueprint + self._blueprint_order.append(blueprint) + first_registration = True + + blueprint.register(self, options, first_registration) + + def iter_blueprints(self): + """Iterates over all blueprints by the order they were registered. + + .. versionadded:: 0.11 + """ + return iter(self._blueprint_order) + + @setupmethod + def add_url_rule( + self, + rule, + endpoint=None, + view_func=None, + provide_automatic_options=None, + **options + ): + """Connects a URL rule. Works exactly like the :meth:`route` + decorator. If a view_func is provided it will be registered with the + endpoint. + + Basically this example:: + + @app.route('/') + def index(): + pass + + Is equivalent to the following:: + + def index(): + pass + app.add_url_rule('/', 'index', index) + + If the view_func is not provided you will need to connect the endpoint + to a view function like so:: + + app.view_functions['index'] = index + + Internally :meth:`route` invokes :meth:`add_url_rule` so if you want + to customize the behavior via subclassing you only need to change + this method. + + For more information refer to :ref:`url-route-registrations`. + + .. versionchanged:: 0.2 + `view_func` parameter added. + + .. versionchanged:: 0.6 + ``OPTIONS`` is added automatically as method. + + :param rule: the URL rule as string + :param endpoint: the endpoint for the registered URL rule. Flask + itself assumes the name of the view function as + endpoint + :param view_func: the function to call when serving a request to the + provided endpoint + :param provide_automatic_options: controls whether the ``OPTIONS`` + method should be added automatically. This can also be controlled + by setting the ``view_func.provide_automatic_options = False`` + before adding the rule. + :param options: the options to be forwarded to the underlying + :class:`~werkzeug.routing.Rule` object. A change + to Werkzeug is handling of method options. methods + is a list of methods this rule should be limited + to (``GET``, ``POST`` etc.). By default a rule + just listens for ``GET`` (and implicitly ``HEAD``). + Starting with Flask 0.6, ``OPTIONS`` is implicitly + added and handled by the standard request handling. + """ + if endpoint is None: + endpoint = _endpoint_from_view_func(view_func) + options["endpoint"] = endpoint + methods = options.pop("methods", None) + + # if the methods are not given and the view_func object knows its + # methods we can use that instead. If neither exists, we go with + # a tuple of only ``GET`` as default. + if methods is None: + methods = getattr(view_func, "methods", None) or ("GET",) + if isinstance(methods, string_types): + raise TypeError( + "Allowed methods have to be iterables of strings, " + 'for example: @app.route(..., methods=["POST"])' + ) + methods = set(item.upper() for item in methods) + + # Methods that should always be added + required_methods = set(getattr(view_func, "required_methods", ())) + + # starting with Flask 0.8 the view_func object can disable and + # force-enable the automatic options handling. + if provide_automatic_options is None: + provide_automatic_options = getattr( + view_func, "provide_automatic_options", None + ) + + if provide_automatic_options is None: + if "OPTIONS" not in methods: + provide_automatic_options = True + required_methods.add("OPTIONS") + else: + provide_automatic_options = False + + # Add the required methods now. + methods |= required_methods + + rule = self.url_rule_class(rule, methods=methods, **options) + rule.provide_automatic_options = provide_automatic_options + + self.url_map.add(rule) + if view_func is not None: + old_func = self.view_functions.get(endpoint) + if old_func is not None and old_func != view_func: + raise AssertionError( + "View function mapping is overwriting an " + "existing endpoint function: %s" % endpoint + ) + self.view_functions[endpoint] = view_func + + def route(self, rule, **options): + """A decorator that is used to register a view function for a + given URL rule. This does the same thing as :meth:`add_url_rule` + but is intended for decorator usage:: + + @app.route('/') + def index(): + return 'Hello World' + + For more information refer to :ref:`url-route-registrations`. + + :param rule: the URL rule as string + :param endpoint: the endpoint for the registered URL rule. Flask + itself assumes the name of the view function as + endpoint + :param options: the options to be forwarded to the underlying + :class:`~werkzeug.routing.Rule` object. A change + to Werkzeug is handling of method options. methods + is a list of methods this rule should be limited + to (``GET``, ``POST`` etc.). By default a rule + just listens for ``GET`` (and implicitly ``HEAD``). + Starting with Flask 0.6, ``OPTIONS`` is implicitly + added and handled by the standard request handling. + """ + + def decorator(f): + endpoint = options.pop("endpoint", None) + self.add_url_rule(rule, endpoint, f, **options) + return f + + return decorator + + @setupmethod + def endpoint(self, endpoint): + """A decorator to register a function as an endpoint. + Example:: + + @app.endpoint('example.endpoint') + def example(): + return "example" + + :param endpoint: the name of the endpoint + """ + + def decorator(f): + self.view_functions[endpoint] = f + return f + + return decorator + + @staticmethod + def _get_exc_class_and_code(exc_class_or_code): + """Get the exception class being handled. For HTTP status codes + or ``HTTPException`` subclasses, return both the exception and + status code. + + :param exc_class_or_code: Any exception class, or an HTTP status + code as an integer. + """ + if isinstance(exc_class_or_code, integer_types): + exc_class = default_exceptions[exc_class_or_code] + else: + exc_class = exc_class_or_code + + assert issubclass(exc_class, Exception) + + if issubclass(exc_class, HTTPException): + return exc_class, exc_class.code + else: + return exc_class, None + + @setupmethod + def errorhandler(self, code_or_exception): + """Register a function to handle errors by code or exception class. + + A decorator that is used to register a function given an + error code. Example:: + + @app.errorhandler(404) + def page_not_found(error): + return 'This page does not exist', 404 + + You can also register handlers for arbitrary exceptions:: + + @app.errorhandler(DatabaseError) + def special_exception_handler(error): + return 'Database connection failed', 500 + + .. versionadded:: 0.7 + Use :meth:`register_error_handler` instead of modifying + :attr:`error_handler_spec` directly, for application wide error + handlers. + + .. versionadded:: 0.7 + One can now additionally also register custom exception types + that do not necessarily have to be a subclass of the + :class:`~werkzeug.exceptions.HTTPException` class. + + :param code_or_exception: the code as integer for the handler, or + an arbitrary exception + """ + + def decorator(f): + self._register_error_handler(None, code_or_exception, f) + return f + + return decorator + + @setupmethod + def register_error_handler(self, code_or_exception, f): + """Alternative error attach function to the :meth:`errorhandler` + decorator that is more straightforward to use for non decorator + usage. + + .. versionadded:: 0.7 + """ + self._register_error_handler(None, code_or_exception, f) + + @setupmethod + def _register_error_handler(self, key, code_or_exception, f): + """ + :type key: None|str + :type code_or_exception: int|T<=Exception + :type f: callable + """ + if isinstance(code_or_exception, HTTPException): # old broken behavior + raise ValueError( + "Tried to register a handler for an exception instance {0!r}." + " Handlers can only be registered for exception classes or" + " HTTP error codes.".format(code_or_exception) + ) + + try: + exc_class, code = self._get_exc_class_and_code(code_or_exception) + except KeyError: + raise KeyError( + "'{0}' is not a recognized HTTP error code. Use a subclass of" + " HTTPException with that code instead.".format(code_or_exception) + ) + + handlers = self.error_handler_spec.setdefault(key, {}).setdefault(code, {}) + handlers[exc_class] = f + + @setupmethod + def template_filter(self, name=None): + """A decorator that is used to register custom template filter. + You can specify a name for the filter, otherwise the function + name will be used. Example:: + + @app.template_filter() + def reverse(s): + return s[::-1] + + :param name: the optional name of the filter, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_template_filter(f, name=name) + return f + + return decorator + + @setupmethod + def add_template_filter(self, f, name=None): + """Register a custom template filter. Works exactly like the + :meth:`template_filter` decorator. + + :param name: the optional name of the filter, otherwise the + function name will be used. + """ + self.jinja_env.filters[name or f.__name__] = f + + @setupmethod + def template_test(self, name=None): + """A decorator that is used to register custom template test. + You can specify a name for the test, otherwise the function + name will be used. Example:: + + @app.template_test() + def is_prime(n): + if n == 2: + return True + for i in range(2, int(math.ceil(math.sqrt(n))) + 1): + if n % i == 0: + return False + return True + + .. versionadded:: 0.10 + + :param name: the optional name of the test, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_template_test(f, name=name) + return f + + return decorator + + @setupmethod + def add_template_test(self, f, name=None): + """Register a custom template test. Works exactly like the + :meth:`template_test` decorator. + + .. versionadded:: 0.10 + + :param name: the optional name of the test, otherwise the + function name will be used. + """ + self.jinja_env.tests[name or f.__name__] = f + + @setupmethod + def template_global(self, name=None): + """A decorator that is used to register a custom template global function. + You can specify a name for the global function, otherwise the function + name will be used. Example:: + + @app.template_global() + def double(n): + return 2 * n + + .. versionadded:: 0.10 + + :param name: the optional name of the global function, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_template_global(f, name=name) + return f + + return decorator + + @setupmethod + def add_template_global(self, f, name=None): + """Register a custom template global function. Works exactly like the + :meth:`template_global` decorator. + + .. versionadded:: 0.10 + + :param name: the optional name of the global function, otherwise the + function name will be used. + """ + self.jinja_env.globals[name or f.__name__] = f + + @setupmethod + def before_request(self, f): + """Registers a function to run before each request. + + For example, this can be used to open a database connection, or to load + the logged in user from the session. + + The function will be called without any arguments. If it returns a + non-None value, the value is handled as if it was the return value from + the view, and further request handling is stopped. + """ + self.before_request_funcs.setdefault(None, []).append(f) + return f + + @setupmethod + def before_first_request(self, f): + """Registers a function to be run before the first request to this + instance of the application. + + The function will be called without any arguments and its return + value is ignored. + + .. versionadded:: 0.8 + """ + self.before_first_request_funcs.append(f) + return f + + @setupmethod + def after_request(self, f): + """Register a function to be run after each request. + + Your function must take one parameter, an instance of + :attr:`response_class` and return a new response object or the + same (see :meth:`process_response`). + + As of Flask 0.7 this function might not be executed at the end of the + request in case an unhandled exception occurred. + """ + self.after_request_funcs.setdefault(None, []).append(f) + return f + + @setupmethod + def teardown_request(self, f): + """Register a function to be run at the end of each request, + regardless of whether there was an exception or not. These functions + are executed when the request context is popped, even if not an + actual request was performed. + + Example:: + + ctx = app.test_request_context() + ctx.push() + ... + ctx.pop() + + When ``ctx.pop()`` is executed in the above example, the teardown + functions are called just before the request context moves from the + stack of active contexts. This becomes relevant if you are using + such constructs in tests. + + Generally teardown functions must take every necessary step to avoid + that they will fail. If they do execute code that might fail they + will have to surround the execution of these code by try/except + statements and log occurring errors. + + When a teardown function was called because of an exception it will + be passed an error object. + + The return values of teardown functions are ignored. + + .. admonition:: Debug Note + + In debug mode Flask will not tear down a request on an exception + immediately. Instead it will keep it alive so that the interactive + debugger can still access it. This behavior can be controlled + by the ``PRESERVE_CONTEXT_ON_EXCEPTION`` configuration variable. + """ + self.teardown_request_funcs.setdefault(None, []).append(f) + return f + + @setupmethod + def teardown_appcontext(self, f): + """Registers a function to be called when the application context + ends. These functions are typically also called when the request + context is popped. + + Example:: + + ctx = app.app_context() + ctx.push() + ... + ctx.pop() + + When ``ctx.pop()`` is executed in the above example, the teardown + functions are called just before the app context moves from the + stack of active contexts. This becomes relevant if you are using + such constructs in tests. + + Since a request context typically also manages an application + context it would also be called when you pop a request context. + + When a teardown function was called because of an unhandled exception + it will be passed an error object. If an :meth:`errorhandler` is + registered, it will handle the exception and the teardown will not + receive it. + + The return values of teardown functions are ignored. + + .. versionadded:: 0.9 + """ + self.teardown_appcontext_funcs.append(f) + return f + + @setupmethod + def context_processor(self, f): + """Registers a template context processor function.""" + self.template_context_processors[None].append(f) + return f + + @setupmethod + def shell_context_processor(self, f): + """Registers a shell context processor function. + + .. versionadded:: 0.11 + """ + self.shell_context_processors.append(f) + return f + + @setupmethod + def url_value_preprocessor(self, f): + """Register a URL value preprocessor function for all view + functions in the application. These functions will be called before the + :meth:`before_request` functions. + + The function can modify the values captured from the matched url before + they are passed to the view. For example, this can be used to pop a + common language code value and place it in ``g`` rather than pass it to + every view. + + The function is passed the endpoint name and values dict. The return + value is ignored. + """ + self.url_value_preprocessors.setdefault(None, []).append(f) + return f + + @setupmethod + def url_defaults(self, f): + """Callback function for URL defaults for all view functions of the + application. It's called with the endpoint and values and should + update the values passed in place. + """ + self.url_default_functions.setdefault(None, []).append(f) + return f + + def _find_error_handler(self, e): + """Return a registered error handler for an exception in this order: + blueprint handler for a specific code, app handler for a specific code, + blueprint handler for an exception class, app handler for an exception + class, or ``None`` if a suitable handler is not found. + """ + exc_class, code = self._get_exc_class_and_code(type(e)) + + for name, c in ( + (request.blueprint, code), + (None, code), + (request.blueprint, None), + (None, None), + ): + handler_map = self.error_handler_spec.setdefault(name, {}).get(c) + + if not handler_map: + continue + + for cls in exc_class.__mro__: + handler = handler_map.get(cls) + + if handler is not None: + return handler + + def handle_http_exception(self, e): + """Handles an HTTP exception. By default this will invoke the + registered error handlers and fall back to returning the + exception as response. + + .. versionchanged:: 1.0.3 + ``RoutingException``, used internally for actions such as + slash redirects during routing, is not passed to error + handlers. + + .. versionchanged:: 1.0 + Exceptions are looked up by code *and* by MRO, so + ``HTTPExcpetion`` subclasses can be handled with a catch-all + handler for the base ``HTTPException``. + + .. versionadded:: 0.3 + """ + # Proxy exceptions don't have error codes. We want to always return + # those unchanged as errors + if e.code is None: + return e + + # RoutingExceptions are used internally to trigger routing + # actions, such as slash redirects raising RequestRedirect. They + # are not raised or handled in user code. + if isinstance(e, RoutingException): + return e + + handler = self._find_error_handler(e) + if handler is None: + return e + return handler(e) + + def trap_http_exception(self, e): + """Checks if an HTTP exception should be trapped or not. By default + this will return ``False`` for all exceptions except for a bad request + key error if ``TRAP_BAD_REQUEST_ERRORS`` is set to ``True``. It + also returns ``True`` if ``TRAP_HTTP_EXCEPTIONS`` is set to ``True``. + + This is called for all HTTP exceptions raised by a view function. + If it returns ``True`` for any exception the error handler for this + exception is not called and it shows up as regular exception in the + traceback. This is helpful for debugging implicitly raised HTTP + exceptions. + + .. versionchanged:: 1.0 + Bad request errors are not trapped by default in debug mode. + + .. versionadded:: 0.8 + """ + if self.config["TRAP_HTTP_EXCEPTIONS"]: + return True + + trap_bad_request = self.config["TRAP_BAD_REQUEST_ERRORS"] + + # if unset, trap key errors in debug mode + if ( + trap_bad_request is None + and self.debug + and isinstance(e, BadRequestKeyError) + ): + return True + + if trap_bad_request: + return isinstance(e, BadRequest) + + return False + + def handle_user_exception(self, e): + """This method is called whenever an exception occurs that + should be handled. A special case is :class:`~werkzeug + .exceptions.HTTPException` which is forwarded to the + :meth:`handle_http_exception` method. This function will either + return a response value or reraise the exception with the same + traceback. + + .. versionchanged:: 1.0 + Key errors raised from request data like ``form`` show the + bad key in debug mode rather than a generic bad request + message. + + .. versionadded:: 0.7 + """ + exc_type, exc_value, tb = sys.exc_info() + assert exc_value is e + # ensure not to trash sys.exc_info() at that point in case someone + # wants the traceback preserved in handle_http_exception. Of course + # we cannot prevent users from trashing it themselves in a custom + # trap_http_exception method so that's their fault then. + + if isinstance(e, BadRequestKeyError): + if self.debug or self.config["TRAP_BAD_REQUEST_ERRORS"]: + e.show_exception = True + + # Werkzeug < 0.15 doesn't add the KeyError to the 400 + # message, add it in manually. + # TODO: clean up once Werkzeug >= 0.15.5 is required + if e.args[0] not in e.get_description(): + e.description = "KeyError: '{}'".format(*e.args) + elif not hasattr(BadRequestKeyError, "show_exception"): + e.args = () + + if isinstance(e, HTTPException) and not self.trap_http_exception(e): + return self.handle_http_exception(e) + + handler = self._find_error_handler(e) + + if handler is None: + reraise(exc_type, exc_value, tb) + return handler(e) + + def handle_exception(self, e): + """Handle an exception that did not have an error handler + associated with it, or that was raised from an error handler. + This always causes a 500 ``InternalServerError``. + + Always sends the :data:`got_request_exception` signal. + + If :attr:`propagate_exceptions` is ``True``, such as in debug + mode, the error will be re-raised so that the debugger can + display it. Otherwise, the original exception is logged, and + an :exc:`~werkzeug.exceptions.InternalServerError` is returned. + + If an error handler is registered for ``InternalServerError`` or + ``500``, it will be used. For consistency, the handler will + always receive the ``InternalServerError``. The original + unhandled exception is available as ``e.original_exception``. + + .. note:: + Prior to Werkzeug 1.0.0, ``InternalServerError`` will not + always have an ``original_exception`` attribute. Use + ``getattr(e, "original_exception", None)`` to simulate the + behavior for compatibility. + + .. versionchanged:: 1.1.0 + Always passes the ``InternalServerError`` instance to the + handler, setting ``original_exception`` to the unhandled + error. + + .. versionchanged:: 1.1.0 + ``after_request`` functions and other finalization is done + even for the default 500 response when there is no handler. + + .. versionadded:: 0.3 + """ + exc_type, exc_value, tb = sys.exc_info() + got_request_exception.send(self, exception=e) + + if self.propagate_exceptions: + # if we want to repropagate the exception, we can attempt to + # raise it with the whole traceback in case we can do that + # (the function was actually called from the except part) + # otherwise, we just raise the error again + if exc_value is e: + reraise(exc_type, exc_value, tb) + else: + raise e + + self.log_exception((exc_type, exc_value, tb)) + server_error = InternalServerError() + # TODO: pass as param when Werkzeug>=1.0.0 is required + # TODO: also remove note about this from docstring and docs + server_error.original_exception = e + handler = self._find_error_handler(server_error) + + if handler is not None: + server_error = handler(server_error) + + return self.finalize_request(server_error, from_error_handler=True) + + def log_exception(self, exc_info): + """Logs an exception. This is called by :meth:`handle_exception` + if debugging is disabled and right before the handler is called. + The default implementation logs the exception as error on the + :attr:`logger`. + + .. versionadded:: 0.8 + """ + self.logger.error( + "Exception on %s [%s]" % (request.path, request.method), exc_info=exc_info + ) + + def raise_routing_exception(self, request): + """Exceptions that are recording during routing are reraised with + this method. During debug we are not reraising redirect requests + for non ``GET``, ``HEAD``, or ``OPTIONS`` requests and we're raising + a different error instead to help debug situations. + + :internal: + """ + if ( + not self.debug + or not isinstance(request.routing_exception, RequestRedirect) + or request.method in ("GET", "HEAD", "OPTIONS") + ): + raise request.routing_exception + + from .debughelpers import FormDataRoutingRedirect + + raise FormDataRoutingRedirect(request) + + def dispatch_request(self): + """Does the request dispatching. Matches the URL and returns the + return value of the view or error handler. This does not have to + be a response object. In order to convert the return value to a + proper response object, call :func:`make_response`. + + .. versionchanged:: 0.7 + This no longer does the exception handling, this code was + moved to the new :meth:`full_dispatch_request`. + """ + req = _request_ctx_stack.top.request + if req.routing_exception is not None: + self.raise_routing_exception(req) + rule = req.url_rule + # if we provide automatic options for this URL and the + # request came with the OPTIONS method, reply automatically + if ( + getattr(rule, "provide_automatic_options", False) + and req.method == "OPTIONS" + ): + return self.make_default_options_response() + # otherwise dispatch to the handler for that endpoint + return self.view_functions[rule.endpoint](**req.view_args) + + def full_dispatch_request(self): + """Dispatches the request and on top of that performs request + pre and postprocessing as well as HTTP exception catching and + error handling. + + .. versionadded:: 0.7 + """ + self.try_trigger_before_first_request_functions() + try: + request_started.send(self) + rv = self.preprocess_request() + if rv is None: + rv = self.dispatch_request() + except Exception as e: + rv = self.handle_user_exception(e) + return self.finalize_request(rv) + + def finalize_request(self, rv, from_error_handler=False): + """Given the return value from a view function this finalizes + the request by converting it into a response and invoking the + postprocessing functions. This is invoked for both normal + request dispatching as well as error handlers. + + Because this means that it might be called as a result of a + failure a special safe mode is available which can be enabled + with the `from_error_handler` flag. If enabled, failures in + response processing will be logged and otherwise ignored. + + :internal: + """ + response = self.make_response(rv) + try: + response = self.process_response(response) + request_finished.send(self, response=response) + except Exception: + if not from_error_handler: + raise + self.logger.exception( + "Request finalizing failed with an error while handling an error" + ) + return response + + def try_trigger_before_first_request_functions(self): + """Called before each request and will ensure that it triggers + the :attr:`before_first_request_funcs` and only exactly once per + application instance (which means process usually). + + :internal: + """ + if self._got_first_request: + return + with self._before_request_lock: + if self._got_first_request: + return + for func in self.before_first_request_funcs: + func() + self._got_first_request = True + + def make_default_options_response(self): + """This method is called to create the default ``OPTIONS`` response. + This can be changed through subclassing to change the default + behavior of ``OPTIONS`` responses. + + .. versionadded:: 0.7 + """ + adapter = _request_ctx_stack.top.url_adapter + if hasattr(adapter, "allowed_methods"): + methods = adapter.allowed_methods() + else: + # fallback for Werkzeug < 0.7 + methods = [] + try: + adapter.match(method="--") + except MethodNotAllowed as e: + methods = e.valid_methods + except HTTPException: + pass + rv = self.response_class() + rv.allow.update(methods) + return rv + + def should_ignore_error(self, error): + """This is called to figure out if an error should be ignored + or not as far as the teardown system is concerned. If this + function returns ``True`` then the teardown handlers will not be + passed the error. + + .. versionadded:: 0.10 + """ + return False + + def make_response(self, rv): + """Convert the return value from a view function to an instance of + :attr:`response_class`. + + :param rv: the return value from the view function. The view function + must return a response. Returning ``None``, or the view ending + without returning, is not allowed. The following types are allowed + for ``view_rv``: + + ``str`` (``unicode`` in Python 2) + A response object is created with the string encoded to UTF-8 + as the body. + + ``bytes`` (``str`` in Python 2) + A response object is created with the bytes as the body. + + ``dict`` + A dictionary that will be jsonify'd before being returned. + + ``tuple`` + Either ``(body, status, headers)``, ``(body, status)``, or + ``(body, headers)``, where ``body`` is any of the other types + allowed here, ``status`` is a string or an integer, and + ``headers`` is a dictionary or a list of ``(key, value)`` + tuples. If ``body`` is a :attr:`response_class` instance, + ``status`` overwrites the exiting value and ``headers`` are + extended. + + :attr:`response_class` + The object is returned unchanged. + + other :class:`~werkzeug.wrappers.Response` class + The object is coerced to :attr:`response_class`. + + :func:`callable` + The function is called as a WSGI application. The result is + used to create a response object. + + .. versionchanged:: 0.9 + Previously a tuple was interpreted as the arguments for the + response object. + """ + + status = headers = None + + # unpack tuple returns + if isinstance(rv, tuple): + len_rv = len(rv) + + # a 3-tuple is unpacked directly + if len_rv == 3: + rv, status, headers = rv + # decide if a 2-tuple has status or headers + elif len_rv == 2: + if isinstance(rv[1], (Headers, dict, tuple, list)): + rv, headers = rv + else: + rv, status = rv + # other sized tuples are not allowed + else: + raise TypeError( + "The view function did not return a valid response tuple." + " The tuple must have the form (body, status, headers)," + " (body, status), or (body, headers)." + ) + + # the body must not be None + if rv is None: + raise TypeError( + "The view function did not return a valid response. The" + " function either returned None or ended without a return" + " statement." + ) + + # make sure the body is an instance of the response class + if not isinstance(rv, self.response_class): + if isinstance(rv, (text_type, bytes, bytearray)): + # let the response class set the status and headers instead of + # waiting to do it manually, so that the class can handle any + # special logic + rv = self.response_class(rv, status=status, headers=headers) + status = headers = None + elif isinstance(rv, dict): + rv = jsonify(rv) + elif isinstance(rv, BaseResponse) or callable(rv): + # evaluate a WSGI callable, or coerce a different response + # class to the correct type + try: + rv = self.response_class.force_type(rv, request.environ) + except TypeError as e: + new_error = TypeError( + "{e}\nThe view function did not return a valid" + " response. The return type must be a string, dict, tuple," + " Response instance, or WSGI callable, but it was a" + " {rv.__class__.__name__}.".format(e=e, rv=rv) + ) + reraise(TypeError, new_error, sys.exc_info()[2]) + else: + raise TypeError( + "The view function did not return a valid" + " response. The return type must be a string, dict, tuple," + " Response instance, or WSGI callable, but it was a" + " {rv.__class__.__name__}.".format(rv=rv) + ) + + # prefer the status if it was provided + if status is not None: + if isinstance(status, (text_type, bytes, bytearray)): + rv.status = status + else: + rv.status_code = status + + # extend existing headers with provided headers + if headers: + rv.headers.extend(headers) + + return rv + + def create_url_adapter(self, request): + """Creates a URL adapter for the given request. The URL adapter + is created at a point where the request context is not yet set + up so the request is passed explicitly. + + .. versionadded:: 0.6 + + .. versionchanged:: 0.9 + This can now also be called without a request object when the + URL adapter is created for the application context. + + .. versionchanged:: 1.0 + :data:`SERVER_NAME` no longer implicitly enables subdomain + matching. Use :attr:`subdomain_matching` instead. + """ + if request is not None: + # If subdomain matching is disabled (the default), use the + # default subdomain in all cases. This should be the default + # in Werkzeug but it currently does not have that feature. + subdomain = ( + (self.url_map.default_subdomain or None) + if not self.subdomain_matching + else None + ) + return self.url_map.bind_to_environ( + request.environ, + server_name=self.config["SERVER_NAME"], + subdomain=subdomain, + ) + # We need at the very least the server name to be set for this + # to work. + if self.config["SERVER_NAME"] is not None: + return self.url_map.bind( + self.config["SERVER_NAME"], + script_name=self.config["APPLICATION_ROOT"], + url_scheme=self.config["PREFERRED_URL_SCHEME"], + ) + + def inject_url_defaults(self, endpoint, values): + """Injects the URL defaults for the given endpoint directly into + the values dictionary passed. This is used internally and + automatically called on URL building. + + .. versionadded:: 0.7 + """ + funcs = self.url_default_functions.get(None, ()) + if "." in endpoint: + bp = endpoint.rsplit(".", 1)[0] + funcs = chain(funcs, self.url_default_functions.get(bp, ())) + for func in funcs: + func(endpoint, values) + + def handle_url_build_error(self, error, endpoint, values): + """Handle :class:`~werkzeug.routing.BuildError` on :meth:`url_for`. + """ + exc_type, exc_value, tb = sys.exc_info() + for handler in self.url_build_error_handlers: + try: + rv = handler(error, endpoint, values) + if rv is not None: + return rv + except BuildError as e: + # make error available outside except block (py3) + error = e + + # At this point we want to reraise the exception. If the error is + # still the same one we can reraise it with the original traceback, + # otherwise we raise it from here. + if error is exc_value: + reraise(exc_type, exc_value, tb) + raise error + + def preprocess_request(self): + """Called before the request is dispatched. Calls + :attr:`url_value_preprocessors` registered with the app and the + current blueprint (if any). Then calls :attr:`before_request_funcs` + registered with the app and the blueprint. + + If any :meth:`before_request` handler returns a non-None value, the + value is handled as if it was the return value from the view, and + further request handling is stopped. + """ + + bp = _request_ctx_stack.top.request.blueprint + + funcs = self.url_value_preprocessors.get(None, ()) + if bp is not None and bp in self.url_value_preprocessors: + funcs = chain(funcs, self.url_value_preprocessors[bp]) + for func in funcs: + func(request.endpoint, request.view_args) + + funcs = self.before_request_funcs.get(None, ()) + if bp is not None and bp in self.before_request_funcs: + funcs = chain(funcs, self.before_request_funcs[bp]) + for func in funcs: + rv = func() + if rv is not None: + return rv + + def process_response(self, response): + """Can be overridden in order to modify the response object + before it's sent to the WSGI server. By default this will + call all the :meth:`after_request` decorated functions. + + .. versionchanged:: 0.5 + As of Flask 0.5 the functions registered for after request + execution are called in reverse order of registration. + + :param response: a :attr:`response_class` object. + :return: a new response object or the same, has to be an + instance of :attr:`response_class`. + """ + ctx = _request_ctx_stack.top + bp = ctx.request.blueprint + funcs = ctx._after_request_functions + if bp is not None and bp in self.after_request_funcs: + funcs = chain(funcs, reversed(self.after_request_funcs[bp])) + if None in self.after_request_funcs: + funcs = chain(funcs, reversed(self.after_request_funcs[None])) + for handler in funcs: + response = handler(response) + if not self.session_interface.is_null_session(ctx.session): + self.session_interface.save_session(self, ctx.session, response) + return response + + def do_teardown_request(self, exc=_sentinel): + """Called after the request is dispatched and the response is + returned, right before the request context is popped. + + This calls all functions decorated with + :meth:`teardown_request`, and :meth:`Blueprint.teardown_request` + if a blueprint handled the request. Finally, the + :data:`request_tearing_down` signal is sent. + + This is called by + :meth:`RequestContext.pop() `, + which may be delayed during testing to maintain access to + resources. + + :param exc: An unhandled exception raised while dispatching the + request. Detected from the current exception information if + not passed. Passed to each teardown function. + + .. versionchanged:: 0.9 + Added the ``exc`` argument. + """ + if exc is _sentinel: + exc = sys.exc_info()[1] + funcs = reversed(self.teardown_request_funcs.get(None, ())) + bp = _request_ctx_stack.top.request.blueprint + if bp is not None and bp in self.teardown_request_funcs: + funcs = chain(funcs, reversed(self.teardown_request_funcs[bp])) + for func in funcs: + func(exc) + request_tearing_down.send(self, exc=exc) + + def do_teardown_appcontext(self, exc=_sentinel): + """Called right before the application context is popped. + + When handling a request, the application context is popped + after the request context. See :meth:`do_teardown_request`. + + This calls all functions decorated with + :meth:`teardown_appcontext`. Then the + :data:`appcontext_tearing_down` signal is sent. + + This is called by + :meth:`AppContext.pop() `. + + .. versionadded:: 0.9 + """ + if exc is _sentinel: + exc = sys.exc_info()[1] + for func in reversed(self.teardown_appcontext_funcs): + func(exc) + appcontext_tearing_down.send(self, exc=exc) + + def app_context(self): + """Create an :class:`~flask.ctx.AppContext`. Use as a ``with`` + block to push the context, which will make :data:`current_app` + point at this application. + + An application context is automatically pushed by + :meth:`RequestContext.push() ` + when handling a request, and when running a CLI command. Use + this to manually create a context outside of these situations. + + :: + + with app.app_context(): + init_db() + + See :doc:`/appcontext`. + + .. versionadded:: 0.9 + """ + return AppContext(self) + + def request_context(self, environ): + """Create a :class:`~flask.ctx.RequestContext` representing a + WSGI environment. Use a ``with`` block to push the context, + which will make :data:`request` point at this request. + + See :doc:`/reqcontext`. + + Typically you should not call this from your own code. A request + context is automatically pushed by the :meth:`wsgi_app` when + handling a request. Use :meth:`test_request_context` to create + an environment and context instead of this method. + + :param environ: a WSGI environment + """ + return RequestContext(self, environ) + + def test_request_context(self, *args, **kwargs): + """Create a :class:`~flask.ctx.RequestContext` for a WSGI + environment created from the given values. This is mostly useful + during testing, where you may want to run a function that uses + request data without dispatching a full request. + + See :doc:`/reqcontext`. + + Use a ``with`` block to push the context, which will make + :data:`request` point at the request for the created + environment. :: + + with test_request_context(...): + generate_report() + + When using the shell, it may be easier to push and pop the + context manually to avoid indentation. :: + + ctx = app.test_request_context(...) + ctx.push() + ... + ctx.pop() + + Takes the same arguments as Werkzeug's + :class:`~werkzeug.test.EnvironBuilder`, with some defaults from + the application. See the linked Werkzeug docs for most of the + available arguments. Flask-specific behavior is listed here. + + :param path: URL path being requested. + :param base_url: Base URL where the app is being served, which + ``path`` is relative to. If not given, built from + :data:`PREFERRED_URL_SCHEME`, ``subdomain``, + :data:`SERVER_NAME`, and :data:`APPLICATION_ROOT`. + :param subdomain: Subdomain name to append to + :data:`SERVER_NAME`. + :param url_scheme: Scheme to use instead of + :data:`PREFERRED_URL_SCHEME`. + :param data: The request body, either as a string or a dict of + form keys and values. + :param json: If given, this is serialized as JSON and passed as + ``data``. Also defaults ``content_type`` to + ``application/json``. + :param args: other positional arguments passed to + :class:`~werkzeug.test.EnvironBuilder`. + :param kwargs: other keyword arguments passed to + :class:`~werkzeug.test.EnvironBuilder`. + """ + from .testing import EnvironBuilder + + builder = EnvironBuilder(self, *args, **kwargs) + + try: + return self.request_context(builder.get_environ()) + finally: + builder.close() + + def wsgi_app(self, environ, start_response): + """The actual WSGI application. This is not implemented in + :meth:`__call__` so that middlewares can be applied without + losing a reference to the app object. Instead of doing this:: + + app = MyMiddleware(app) + + It's a better idea to do this instead:: + + app.wsgi_app = MyMiddleware(app.wsgi_app) + + Then you still have the original application object around and + can continue to call methods on it. + + .. versionchanged:: 0.7 + Teardown events for the request and app contexts are called + even if an unhandled error occurs. Other events may not be + called depending on when an error occurs during dispatch. + See :ref:`callbacks-and-errors`. + + :param environ: A WSGI environment. + :param start_response: A callable accepting a status code, + a list of headers, and an optional exception context to + start the response. + """ + ctx = self.request_context(environ) + error = None + try: + try: + ctx.push() + response = self.full_dispatch_request() + except Exception as e: + error = e + response = self.handle_exception(e) + except: # noqa: B001 + error = sys.exc_info()[1] + raise + return response(environ, start_response) + finally: + if self.should_ignore_error(error): + error = None + ctx.auto_pop(error) + + def __call__(self, environ, start_response): + """The WSGI server calls the Flask application object as the + WSGI application. This calls :meth:`wsgi_app` which can be + wrapped to applying middleware.""" + return self.wsgi_app(environ, start_response) + + def __repr__(self): + return "<%s %r>" % (self.__class__.__name__, self.name) diff --git a/matteo_env/Lib/site-packages/flask/blueprints.py b/matteo_env/Lib/site-packages/flask/blueprints.py new file mode 100644 index 0000000..8978104 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/blueprints.py @@ -0,0 +1,569 @@ +# -*- coding: utf-8 -*- +""" + flask.blueprints + ~~~~~~~~~~~~~~~~ + + Blueprints are the recommended way to implement larger or more + pluggable applications in Flask 0.7 and later. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +from functools import update_wrapper + +from .helpers import _endpoint_from_view_func +from .helpers import _PackageBoundObject + +# a singleton sentinel value for parameter defaults +_sentinel = object() + + +class BlueprintSetupState(object): + """Temporary holder object for registering a blueprint with the + application. An instance of this class is created by the + :meth:`~flask.Blueprint.make_setup_state` method and later passed + to all register callback functions. + """ + + def __init__(self, blueprint, app, options, first_registration): + #: a reference to the current application + self.app = app + + #: a reference to the blueprint that created this setup state. + self.blueprint = blueprint + + #: a dictionary with all options that were passed to the + #: :meth:`~flask.Flask.register_blueprint` method. + self.options = options + + #: as blueprints can be registered multiple times with the + #: application and not everything wants to be registered + #: multiple times on it, this attribute can be used to figure + #: out if the blueprint was registered in the past already. + self.first_registration = first_registration + + subdomain = self.options.get("subdomain") + if subdomain is None: + subdomain = self.blueprint.subdomain + + #: The subdomain that the blueprint should be active for, ``None`` + #: otherwise. + self.subdomain = subdomain + + url_prefix = self.options.get("url_prefix") + if url_prefix is None: + url_prefix = self.blueprint.url_prefix + #: The prefix that should be used for all URLs defined on the + #: blueprint. + self.url_prefix = url_prefix + + #: A dictionary with URL defaults that is added to each and every + #: URL that was defined with the blueprint. + self.url_defaults = dict(self.blueprint.url_values_defaults) + self.url_defaults.update(self.options.get("url_defaults", ())) + + def add_url_rule(self, rule, endpoint=None, view_func=None, **options): + """A helper method to register a rule (and optionally a view function) + to the application. The endpoint is automatically prefixed with the + blueprint's name. + """ + if self.url_prefix is not None: + if rule: + rule = "/".join((self.url_prefix.rstrip("/"), rule.lstrip("/"))) + else: + rule = self.url_prefix + options.setdefault("subdomain", self.subdomain) + if endpoint is None: + endpoint = _endpoint_from_view_func(view_func) + defaults = self.url_defaults + if "defaults" in options: + defaults = dict(defaults, **options.pop("defaults")) + self.app.add_url_rule( + rule, + "%s.%s" % (self.blueprint.name, endpoint), + view_func, + defaults=defaults, + **options + ) + + +class Blueprint(_PackageBoundObject): + """Represents a blueprint, a collection of routes and other + app-related functions that can be registered on a real application + later. + + A blueprint is an object that allows defining application functions + without requiring an application object ahead of time. It uses the + same decorators as :class:`~flask.Flask`, but defers the need for an + application by recording them for later registration. + + Decorating a function with a blueprint creates a deferred function + that is called with :class:`~flask.blueprints.BlueprintSetupState` + when the blueprint is registered on an application. + + See :ref:`blueprints` for more information. + + .. versionchanged:: 1.1.0 + Blueprints have a ``cli`` group to register nested CLI commands. + The ``cli_group`` parameter controls the name of the group under + the ``flask`` command. + + .. versionadded:: 0.7 + + :param name: The name of the blueprint. Will be prepended to each + endpoint name. + :param import_name: The name of the blueprint package, usually + ``__name__``. This helps locate the ``root_path`` for the + blueprint. + :param static_folder: A folder with static files that should be + served by the blueprint's static route. The path is relative to + the blueprint's root path. Blueprint static files are disabled + by default. + :param static_url_path: The url to serve static files from. + Defaults to ``static_folder``. If the blueprint does not have + a ``url_prefix``, the app's static route will take precedence, + and the blueprint's static files won't be accessible. + :param template_folder: A folder with templates that should be added + to the app's template search path. The path is relative to the + blueprint's root path. Blueprint templates are disabled by + default. Blueprint templates have a lower precedence than those + in the app's templates folder. + :param url_prefix: A path to prepend to all of the blueprint's URLs, + to make them distinct from the rest of the app's routes. + :param subdomain: A subdomain that blueprint routes will match on by + default. + :param url_defaults: A dict of default values that blueprint routes + will receive by default. + :param root_path: By default, the blueprint will automatically this + based on ``import_name``. In certain situations this automatic + detection can fail, so the path can be specified manually + instead. + """ + + warn_on_modifications = False + _got_registered_once = False + + #: Blueprint local JSON decoder class to use. + #: Set to ``None`` to use the app's :class:`~flask.app.Flask.json_encoder`. + json_encoder = None + #: Blueprint local JSON decoder class to use. + #: Set to ``None`` to use the app's :class:`~flask.app.Flask.json_decoder`. + json_decoder = None + + # TODO remove the next three attrs when Sphinx :inherited-members: works + # https://github.com/sphinx-doc/sphinx/issues/741 + + #: The name of the package or module that this app belongs to. Do not + #: change this once it is set by the constructor. + import_name = None + + #: Location of the template files to be added to the template lookup. + #: ``None`` if templates should not be added. + template_folder = None + + #: Absolute path to the package on the filesystem. Used to look up + #: resources contained in the package. + root_path = None + + def __init__( + self, + name, + import_name, + static_folder=None, + static_url_path=None, + template_folder=None, + url_prefix=None, + subdomain=None, + url_defaults=None, + root_path=None, + cli_group=_sentinel, + ): + _PackageBoundObject.__init__( + self, import_name, template_folder, root_path=root_path + ) + self.name = name + self.url_prefix = url_prefix + self.subdomain = subdomain + self.static_folder = static_folder + self.static_url_path = static_url_path + self.deferred_functions = [] + if url_defaults is None: + url_defaults = {} + self.url_values_defaults = url_defaults + self.cli_group = cli_group + + def record(self, func): + """Registers a function that is called when the blueprint is + registered on the application. This function is called with the + state as argument as returned by the :meth:`make_setup_state` + method. + """ + if self._got_registered_once and self.warn_on_modifications: + from warnings import warn + + warn( + Warning( + "The blueprint was already registered once " + "but is getting modified now. These changes " + "will not show up." + ) + ) + self.deferred_functions.append(func) + + def record_once(self, func): + """Works like :meth:`record` but wraps the function in another + function that will ensure the function is only called once. If the + blueprint is registered a second time on the application, the + function passed is not called. + """ + + def wrapper(state): + if state.first_registration: + func(state) + + return self.record(update_wrapper(wrapper, func)) + + def make_setup_state(self, app, options, first_registration=False): + """Creates an instance of :meth:`~flask.blueprints.BlueprintSetupState` + object that is later passed to the register callback functions. + Subclasses can override this to return a subclass of the setup state. + """ + return BlueprintSetupState(self, app, options, first_registration) + + def register(self, app, options, first_registration=False): + """Called by :meth:`Flask.register_blueprint` to register all views + and callbacks registered on the blueprint with the application. Creates + a :class:`.BlueprintSetupState` and calls each :meth:`record` callback + with it. + + :param app: The application this blueprint is being registered with. + :param options: Keyword arguments forwarded from + :meth:`~Flask.register_blueprint`. + :param first_registration: Whether this is the first time this + blueprint has been registered on the application. + """ + self._got_registered_once = True + state = self.make_setup_state(app, options, first_registration) + + if self.has_static_folder: + state.add_url_rule( + self.static_url_path + "/", + view_func=self.send_static_file, + endpoint="static", + ) + + for deferred in self.deferred_functions: + deferred(state) + + cli_resolved_group = options.get("cli_group", self.cli_group) + + if not self.cli.commands: + return + + if cli_resolved_group is None: + app.cli.commands.update(self.cli.commands) + elif cli_resolved_group is _sentinel: + self.cli.name = self.name + app.cli.add_command(self.cli) + else: + self.cli.name = cli_resolved_group + app.cli.add_command(self.cli) + + def route(self, rule, **options): + """Like :meth:`Flask.route` but for a blueprint. The endpoint for the + :func:`url_for` function is prefixed with the name of the blueprint. + """ + + def decorator(f): + endpoint = options.pop("endpoint", f.__name__) + self.add_url_rule(rule, endpoint, f, **options) + return f + + return decorator + + def add_url_rule(self, rule, endpoint=None, view_func=None, **options): + """Like :meth:`Flask.add_url_rule` but for a blueprint. The endpoint for + the :func:`url_for` function is prefixed with the name of the blueprint. + """ + if endpoint: + assert "." not in endpoint, "Blueprint endpoints should not contain dots" + if view_func and hasattr(view_func, "__name__"): + assert ( + "." not in view_func.__name__ + ), "Blueprint view function name should not contain dots" + self.record(lambda s: s.add_url_rule(rule, endpoint, view_func, **options)) + + def endpoint(self, endpoint): + """Like :meth:`Flask.endpoint` but for a blueprint. This does not + prefix the endpoint with the blueprint name, this has to be done + explicitly by the user of this method. If the endpoint is prefixed + with a `.` it will be registered to the current blueprint, otherwise + it's an application independent endpoint. + """ + + def decorator(f): + def register_endpoint(state): + state.app.view_functions[endpoint] = f + + self.record_once(register_endpoint) + return f + + return decorator + + def app_template_filter(self, name=None): + """Register a custom template filter, available application wide. Like + :meth:`Flask.template_filter` but for a blueprint. + + :param name: the optional name of the filter, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_app_template_filter(f, name=name) + return f + + return decorator + + def add_app_template_filter(self, f, name=None): + """Register a custom template filter, available application wide. Like + :meth:`Flask.add_template_filter` but for a blueprint. Works exactly + like the :meth:`app_template_filter` decorator. + + :param name: the optional name of the filter, otherwise the + function name will be used. + """ + + def register_template(state): + state.app.jinja_env.filters[name or f.__name__] = f + + self.record_once(register_template) + + def app_template_test(self, name=None): + """Register a custom template test, available application wide. Like + :meth:`Flask.template_test` but for a blueprint. + + .. versionadded:: 0.10 + + :param name: the optional name of the test, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_app_template_test(f, name=name) + return f + + return decorator + + def add_app_template_test(self, f, name=None): + """Register a custom template test, available application wide. Like + :meth:`Flask.add_template_test` but for a blueprint. Works exactly + like the :meth:`app_template_test` decorator. + + .. versionadded:: 0.10 + + :param name: the optional name of the test, otherwise the + function name will be used. + """ + + def register_template(state): + state.app.jinja_env.tests[name or f.__name__] = f + + self.record_once(register_template) + + def app_template_global(self, name=None): + """Register a custom template global, available application wide. Like + :meth:`Flask.template_global` but for a blueprint. + + .. versionadded:: 0.10 + + :param name: the optional name of the global, otherwise the + function name will be used. + """ + + def decorator(f): + self.add_app_template_global(f, name=name) + return f + + return decorator + + def add_app_template_global(self, f, name=None): + """Register a custom template global, available application wide. Like + :meth:`Flask.add_template_global` but for a blueprint. Works exactly + like the :meth:`app_template_global` decorator. + + .. versionadded:: 0.10 + + :param name: the optional name of the global, otherwise the + function name will be used. + """ + + def register_template(state): + state.app.jinja_env.globals[name or f.__name__] = f + + self.record_once(register_template) + + def before_request(self, f): + """Like :meth:`Flask.before_request` but for a blueprint. This function + is only executed before each request that is handled by a function of + that blueprint. + """ + self.record_once( + lambda s: s.app.before_request_funcs.setdefault(self.name, []).append(f) + ) + return f + + def before_app_request(self, f): + """Like :meth:`Flask.before_request`. Such a function is executed + before each request, even if outside of a blueprint. + """ + self.record_once( + lambda s: s.app.before_request_funcs.setdefault(None, []).append(f) + ) + return f + + def before_app_first_request(self, f): + """Like :meth:`Flask.before_first_request`. Such a function is + executed before the first request to the application. + """ + self.record_once(lambda s: s.app.before_first_request_funcs.append(f)) + return f + + def after_request(self, f): + """Like :meth:`Flask.after_request` but for a blueprint. This function + is only executed after each request that is handled by a function of + that blueprint. + """ + self.record_once( + lambda s: s.app.after_request_funcs.setdefault(self.name, []).append(f) + ) + return f + + def after_app_request(self, f): + """Like :meth:`Flask.after_request` but for a blueprint. Such a function + is executed after each request, even if outside of the blueprint. + """ + self.record_once( + lambda s: s.app.after_request_funcs.setdefault(None, []).append(f) + ) + return f + + def teardown_request(self, f): + """Like :meth:`Flask.teardown_request` but for a blueprint. This + function is only executed when tearing down requests handled by a + function of that blueprint. Teardown request functions are executed + when the request context is popped, even when no actual request was + performed. + """ + self.record_once( + lambda s: s.app.teardown_request_funcs.setdefault(self.name, []).append(f) + ) + return f + + def teardown_app_request(self, f): + """Like :meth:`Flask.teardown_request` but for a blueprint. Such a + function is executed when tearing down each request, even if outside of + the blueprint. + """ + self.record_once( + lambda s: s.app.teardown_request_funcs.setdefault(None, []).append(f) + ) + return f + + def context_processor(self, f): + """Like :meth:`Flask.context_processor` but for a blueprint. This + function is only executed for requests handled by a blueprint. + """ + self.record_once( + lambda s: s.app.template_context_processors.setdefault( + self.name, [] + ).append(f) + ) + return f + + def app_context_processor(self, f): + """Like :meth:`Flask.context_processor` but for a blueprint. Such a + function is executed each request, even if outside of the blueprint. + """ + self.record_once( + lambda s: s.app.template_context_processors.setdefault(None, []).append(f) + ) + return f + + def app_errorhandler(self, code): + """Like :meth:`Flask.errorhandler` but for a blueprint. This + handler is used for all requests, even if outside of the blueprint. + """ + + def decorator(f): + self.record_once(lambda s: s.app.errorhandler(code)(f)) + return f + + return decorator + + def url_value_preprocessor(self, f): + """Registers a function as URL value preprocessor for this + blueprint. It's called before the view functions are called and + can modify the url values provided. + """ + self.record_once( + lambda s: s.app.url_value_preprocessors.setdefault(self.name, []).append(f) + ) + return f + + def url_defaults(self, f): + """Callback function for URL defaults for this blueprint. It's called + with the endpoint and values and should update the values passed + in place. + """ + self.record_once( + lambda s: s.app.url_default_functions.setdefault(self.name, []).append(f) + ) + return f + + def app_url_value_preprocessor(self, f): + """Same as :meth:`url_value_preprocessor` but application wide. + """ + self.record_once( + lambda s: s.app.url_value_preprocessors.setdefault(None, []).append(f) + ) + return f + + def app_url_defaults(self, f): + """Same as :meth:`url_defaults` but application wide. + """ + self.record_once( + lambda s: s.app.url_default_functions.setdefault(None, []).append(f) + ) + return f + + def errorhandler(self, code_or_exception): + """Registers an error handler that becomes active for this blueprint + only. Please be aware that routing does not happen local to a + blueprint so an error handler for 404 usually is not handled by + a blueprint unless it is caused inside a view function. Another + special case is the 500 internal server error which is always looked + up from the application. + + Otherwise works as the :meth:`~flask.Flask.errorhandler` decorator + of the :class:`~flask.Flask` object. + """ + + def decorator(f): + self.record_once( + lambda s: s.app._register_error_handler(self.name, code_or_exception, f) + ) + return f + + return decorator + + def register_error_handler(self, code_or_exception, f): + """Non-decorator version of the :meth:`errorhandler` error attach + function, akin to the :meth:`~flask.Flask.register_error_handler` + application-wide function of the :class:`~flask.Flask` object but + for error handlers limited to this blueprint. + + .. versionadded:: 0.11 + """ + self.record_once( + lambda s: s.app._register_error_handler(self.name, code_or_exception, f) + ) diff --git a/matteo_env/Lib/site-packages/flask/cli.py b/matteo_env/Lib/site-packages/flask/cli.py new file mode 100644 index 0000000..c09b2cd --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/cli.py @@ -0,0 +1,971 @@ +# -*- coding: utf-8 -*- +""" + flask.cli + ~~~~~~~~~ + + A simple command line application to run flask apps. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +from __future__ import print_function + +import ast +import inspect +import os +import platform +import re +import sys +import traceback +from functools import update_wrapper +from operator import attrgetter +from threading import Lock +from threading import Thread + +import click +from werkzeug.utils import import_string + +from ._compat import getargspec +from ._compat import itervalues +from ._compat import reraise +from ._compat import text_type +from .globals import current_app +from .helpers import get_debug_flag +from .helpers import get_env +from .helpers import get_load_dotenv + +try: + import dotenv +except ImportError: + dotenv = None + +try: + import ssl +except ImportError: + ssl = None + + +class NoAppException(click.UsageError): + """Raised if an application cannot be found or loaded.""" + + +def find_best_app(script_info, module): + """Given a module instance this tries to find the best possible + application in the module or raises an exception. + """ + from . import Flask + + # Search for the most common names first. + for attr_name in ("app", "application"): + app = getattr(module, attr_name, None) + + if isinstance(app, Flask): + return app + + # Otherwise find the only object that is a Flask instance. + matches = [v for v in itervalues(module.__dict__) if isinstance(v, Flask)] + + if len(matches) == 1: + return matches[0] + elif len(matches) > 1: + raise NoAppException( + 'Detected multiple Flask applications in module "{module}". Use ' + '"FLASK_APP={module}:name" to specify the correct ' + "one.".format(module=module.__name__) + ) + + # Search for app factory functions. + for attr_name in ("create_app", "make_app"): + app_factory = getattr(module, attr_name, None) + + if inspect.isfunction(app_factory): + try: + app = call_factory(script_info, app_factory) + + if isinstance(app, Flask): + return app + except TypeError: + if not _called_with_wrong_args(app_factory): + raise + raise NoAppException( + 'Detected factory "{factory}" in module "{module}", but ' + "could not call it without arguments. Use " + "\"FLASK_APP='{module}:{factory}(args)'\" to specify " + "arguments.".format(factory=attr_name, module=module.__name__) + ) + + raise NoAppException( + 'Failed to find Flask application or factory in module "{module}". ' + 'Use "FLASK_APP={module}:name to specify one.'.format(module=module.__name__) + ) + + +def call_factory(script_info, app_factory, arguments=()): + """Takes an app factory, a ``script_info` object and optionally a tuple + of arguments. Checks for the existence of a script_info argument and calls + the app_factory depending on that and the arguments provided. + """ + args_spec = getargspec(app_factory) + arg_names = args_spec.args + arg_defaults = args_spec.defaults + + if "script_info" in arg_names: + return app_factory(*arguments, script_info=script_info) + elif arguments: + return app_factory(*arguments) + elif not arguments and len(arg_names) == 1 and arg_defaults is None: + return app_factory(script_info) + + return app_factory() + + +def _called_with_wrong_args(factory): + """Check whether calling a function raised a ``TypeError`` because + the call failed or because something in the factory raised the + error. + + :param factory: the factory function that was called + :return: true if the call failed + """ + tb = sys.exc_info()[2] + + try: + while tb is not None: + if tb.tb_frame.f_code is factory.__code__: + # in the factory, it was called successfully + return False + + tb = tb.tb_next + + # didn't reach the factory + return True + finally: + # explicitly delete tb as it is circular referenced + # https://docs.python.org/2/library/sys.html#sys.exc_info + del tb + + +def find_app_by_string(script_info, module, app_name): + """Checks if the given string is a variable name or a function. If it is a + function, it checks for specified arguments and whether it takes a + ``script_info`` argument and calls the function with the appropriate + arguments. + """ + from . import Flask + + match = re.match(r"^ *([^ ()]+) *(?:\((.*?) *,? *\))? *$", app_name) + + if not match: + raise NoAppException( + '"{name}" is not a valid variable name or function ' + "expression.".format(name=app_name) + ) + + name, args = match.groups() + + try: + attr = getattr(module, name) + except AttributeError as e: + raise NoAppException(e.args[0]) + + if inspect.isfunction(attr): + if args: + try: + args = ast.literal_eval("({args},)".format(args=args)) + except (ValueError, SyntaxError) as e: + raise NoAppException( + "Could not parse the arguments in " + '"{app_name}".'.format(e=e, app_name=app_name) + ) + else: + args = () + + try: + app = call_factory(script_info, attr, args) + except TypeError as e: + if not _called_with_wrong_args(attr): + raise + + raise NoAppException( + '{e}\nThe factory "{app_name}" in module "{module}" could not ' + "be called with the specified arguments.".format( + e=e, app_name=app_name, module=module.__name__ + ) + ) + else: + app = attr + + if isinstance(app, Flask): + return app + + raise NoAppException( + "A valid Flask application was not obtained from " + '"{module}:{app_name}".'.format(module=module.__name__, app_name=app_name) + ) + + +def prepare_import(path): + """Given a filename this will try to calculate the python path, add it + to the search path and return the actual module name that is expected. + """ + path = os.path.realpath(path) + + fname, ext = os.path.splitext(path) + if ext == ".py": + path = fname + + if os.path.basename(path) == "__init__": + path = os.path.dirname(path) + + module_name = [] + + # move up until outside package structure (no __init__.py) + while True: + path, name = os.path.split(path) + module_name.append(name) + + if not os.path.exists(os.path.join(path, "__init__.py")): + break + + if sys.path[0] != path: + sys.path.insert(0, path) + + return ".".join(module_name[::-1]) + + +def locate_app(script_info, module_name, app_name, raise_if_not_found=True): + __traceback_hide__ = True # noqa: F841 + + try: + __import__(module_name) + except ImportError: + # Reraise the ImportError if it occurred within the imported module. + # Determine this by checking whether the trace has a depth > 1. + if sys.exc_info()[-1].tb_next: + raise NoAppException( + 'While importing "{name}", an ImportError was raised:' + "\n\n{tb}".format(name=module_name, tb=traceback.format_exc()) + ) + elif raise_if_not_found: + raise NoAppException('Could not import "{name}".'.format(name=module_name)) + else: + return + + module = sys.modules[module_name] + + if app_name is None: + return find_best_app(script_info, module) + else: + return find_app_by_string(script_info, module, app_name) + + +def get_version(ctx, param, value): + if not value or ctx.resilient_parsing: + return + + import werkzeug + from . import __version__ + + message = "Python %(python)s\nFlask %(flask)s\nWerkzeug %(werkzeug)s" + click.echo( + message + % { + "python": platform.python_version(), + "flask": __version__, + "werkzeug": werkzeug.__version__, + }, + color=ctx.color, + ) + ctx.exit() + + +version_option = click.Option( + ["--version"], + help="Show the flask version", + expose_value=False, + callback=get_version, + is_flag=True, + is_eager=True, +) + + +class DispatchingApp(object): + """Special application that dispatches to a Flask application which + is imported by name in a background thread. If an error happens + it is recorded and shown as part of the WSGI handling which in case + of the Werkzeug debugger means that it shows up in the browser. + """ + + def __init__(self, loader, use_eager_loading=False): + self.loader = loader + self._app = None + self._lock = Lock() + self._bg_loading_exc_info = None + if use_eager_loading: + self._load_unlocked() + else: + self._load_in_background() + + def _load_in_background(self): + def _load_app(): + __traceback_hide__ = True # noqa: F841 + with self._lock: + try: + self._load_unlocked() + except Exception: + self._bg_loading_exc_info = sys.exc_info() + + t = Thread(target=_load_app, args=()) + t.start() + + def _flush_bg_loading_exception(self): + __traceback_hide__ = True # noqa: F841 + exc_info = self._bg_loading_exc_info + if exc_info is not None: + self._bg_loading_exc_info = None + reraise(*exc_info) + + def _load_unlocked(self): + __traceback_hide__ = True # noqa: F841 + self._app = rv = self.loader() + self._bg_loading_exc_info = None + return rv + + def __call__(self, environ, start_response): + __traceback_hide__ = True # noqa: F841 + if self._app is not None: + return self._app(environ, start_response) + self._flush_bg_loading_exception() + with self._lock: + if self._app is not None: + rv = self._app + else: + rv = self._load_unlocked() + return rv(environ, start_response) + + +class ScriptInfo(object): + """Helper object to deal with Flask applications. This is usually not + necessary to interface with as it's used internally in the dispatching + to click. In future versions of Flask this object will most likely play + a bigger role. Typically it's created automatically by the + :class:`FlaskGroup` but you can also manually create it and pass it + onwards as click object. + """ + + def __init__(self, app_import_path=None, create_app=None, set_debug_flag=True): + #: Optionally the import path for the Flask application. + self.app_import_path = app_import_path or os.environ.get("FLASK_APP") + #: Optionally a function that is passed the script info to create + #: the instance of the application. + self.create_app = create_app + #: A dictionary with arbitrary data that can be associated with + #: this script info. + self.data = {} + self.set_debug_flag = set_debug_flag + self._loaded_app = None + + def load_app(self): + """Loads the Flask app (if not yet loaded) and returns it. Calling + this multiple times will just result in the already loaded app to + be returned. + """ + __traceback_hide__ = True # noqa: F841 + + if self._loaded_app is not None: + return self._loaded_app + + app = None + + if self.create_app is not None: + app = call_factory(self, self.create_app) + else: + if self.app_import_path: + path, name = ( + re.split(r":(?![\\/])", self.app_import_path, 1) + [None] + )[:2] + import_name = prepare_import(path) + app = locate_app(self, import_name, name) + else: + for path in ("wsgi.py", "app.py"): + import_name = prepare_import(path) + app = locate_app(self, import_name, None, raise_if_not_found=False) + + if app: + break + + if not app: + raise NoAppException( + "Could not locate a Flask application. You did not provide " + 'the "FLASK_APP" environment variable, and a "wsgi.py" or ' + '"app.py" module was not found in the current directory.' + ) + + if self.set_debug_flag: + # Update the app's debug flag through the descriptor so that + # other values repopulate as well. + app.debug = get_debug_flag() + + self._loaded_app = app + return app + + +pass_script_info = click.make_pass_decorator(ScriptInfo, ensure=True) + + +def with_appcontext(f): + """Wraps a callback so that it's guaranteed to be executed with the + script's application context. If callbacks are registered directly + to the ``app.cli`` object then they are wrapped with this function + by default unless it's disabled. + """ + + @click.pass_context + def decorator(__ctx, *args, **kwargs): + with __ctx.ensure_object(ScriptInfo).load_app().app_context(): + return __ctx.invoke(f, *args, **kwargs) + + return update_wrapper(decorator, f) + + +class AppGroup(click.Group): + """This works similar to a regular click :class:`~click.Group` but it + changes the behavior of the :meth:`command` decorator so that it + automatically wraps the functions in :func:`with_appcontext`. + + Not to be confused with :class:`FlaskGroup`. + """ + + def command(self, *args, **kwargs): + """This works exactly like the method of the same name on a regular + :class:`click.Group` but it wraps callbacks in :func:`with_appcontext` + unless it's disabled by passing ``with_appcontext=False``. + """ + wrap_for_ctx = kwargs.pop("with_appcontext", True) + + def decorator(f): + if wrap_for_ctx: + f = with_appcontext(f) + return click.Group.command(self, *args, **kwargs)(f) + + return decorator + + def group(self, *args, **kwargs): + """This works exactly like the method of the same name on a regular + :class:`click.Group` but it defaults the group class to + :class:`AppGroup`. + """ + kwargs.setdefault("cls", AppGroup) + return click.Group.group(self, *args, **kwargs) + + +class FlaskGroup(AppGroup): + """Special subclass of the :class:`AppGroup` group that supports + loading more commands from the configured Flask app. Normally a + developer does not have to interface with this class but there are + some very advanced use cases for which it makes sense to create an + instance of this. + + For information as of why this is useful see :ref:`custom-scripts`. + + :param add_default_commands: if this is True then the default run and + shell commands will be added. + :param add_version_option: adds the ``--version`` option. + :param create_app: an optional callback that is passed the script info and + returns the loaded app. + :param load_dotenv: Load the nearest :file:`.env` and :file:`.flaskenv` + files to set environment variables. Will also change the working + directory to the directory containing the first file found. + :param set_debug_flag: Set the app's debug flag based on the active + environment + + .. versionchanged:: 1.0 + If installed, python-dotenv will be used to load environment variables + from :file:`.env` and :file:`.flaskenv` files. + """ + + def __init__( + self, + add_default_commands=True, + create_app=None, + add_version_option=True, + load_dotenv=True, + set_debug_flag=True, + **extra + ): + params = list(extra.pop("params", None) or ()) + + if add_version_option: + params.append(version_option) + + AppGroup.__init__(self, params=params, **extra) + self.create_app = create_app + self.load_dotenv = load_dotenv + self.set_debug_flag = set_debug_flag + + if add_default_commands: + self.add_command(run_command) + self.add_command(shell_command) + self.add_command(routes_command) + + self._loaded_plugin_commands = False + + def _load_plugin_commands(self): + if self._loaded_plugin_commands: + return + try: + import pkg_resources + except ImportError: + self._loaded_plugin_commands = True + return + + for ep in pkg_resources.iter_entry_points("flask.commands"): + self.add_command(ep.load(), ep.name) + self._loaded_plugin_commands = True + + def get_command(self, ctx, name): + self._load_plugin_commands() + + # We load built-in commands first as these should always be the + # same no matter what the app does. If the app does want to + # override this it needs to make a custom instance of this group + # and not attach the default commands. + # + # This also means that the script stays functional in case the + # application completely fails. + rv = AppGroup.get_command(self, ctx, name) + if rv is not None: + return rv + + info = ctx.ensure_object(ScriptInfo) + try: + rv = info.load_app().cli.get_command(ctx, name) + if rv is not None: + return rv + except NoAppException: + pass + + def list_commands(self, ctx): + self._load_plugin_commands() + + # The commands available is the list of both the application (if + # available) plus the builtin commands. + rv = set(click.Group.list_commands(self, ctx)) + info = ctx.ensure_object(ScriptInfo) + try: + rv.update(info.load_app().cli.list_commands(ctx)) + except Exception: + # Here we intentionally swallow all exceptions as we don't + # want the help page to break if the app does not exist. + # If someone attempts to use the command we try to create + # the app again and this will give us the error. + # However, we will not do so silently because that would confuse + # users. + traceback.print_exc() + return sorted(rv) + + def main(self, *args, **kwargs): + # Set a global flag that indicates that we were invoked from the + # command line interface. This is detected by Flask.run to make the + # call into a no-op. This is necessary to avoid ugly errors when the + # script that is loaded here also attempts to start a server. + os.environ["FLASK_RUN_FROM_CLI"] = "true" + + if get_load_dotenv(self.load_dotenv): + load_dotenv() + + obj = kwargs.get("obj") + + if obj is None: + obj = ScriptInfo( + create_app=self.create_app, set_debug_flag=self.set_debug_flag + ) + + kwargs["obj"] = obj + kwargs.setdefault("auto_envvar_prefix", "FLASK") + return super(FlaskGroup, self).main(*args, **kwargs) + + +def _path_is_ancestor(path, other): + """Take ``other`` and remove the length of ``path`` from it. Then join it + to ``path``. If it is the original value, ``path`` is an ancestor of + ``other``.""" + return os.path.join(path, other[len(path) :].lstrip(os.sep)) == other + + +def load_dotenv(path=None): + """Load "dotenv" files in order of precedence to set environment variables. + + If an env var is already set it is not overwritten, so earlier files in the + list are preferred over later files. + + Changes the current working directory to the location of the first file + found, with the assumption that it is in the top level project directory + and will be where the Python path should import local packages from. + + This is a no-op if `python-dotenv`_ is not installed. + + .. _python-dotenv: https://github.com/theskumar/python-dotenv#readme + + :param path: Load the file at this location instead of searching. + :return: ``True`` if a file was loaded. + + .. versionchanged:: 1.1.0 + Returns ``False`` when python-dotenv is not installed, or when + the given path isn't a file. + + .. versionadded:: 1.0 + """ + if dotenv is None: + if path or os.path.isfile(".env") or os.path.isfile(".flaskenv"): + click.secho( + " * Tip: There are .env or .flaskenv files present." + ' Do "pip install python-dotenv" to use them.', + fg="yellow", + err=True, + ) + + return False + + # if the given path specifies the actual file then return True, + # else False + if path is not None: + if os.path.isfile(path): + return dotenv.load_dotenv(path) + + return False + + new_dir = None + + for name in (".env", ".flaskenv"): + path = dotenv.find_dotenv(name, usecwd=True) + + if not path: + continue + + if new_dir is None: + new_dir = os.path.dirname(path) + + dotenv.load_dotenv(path) + + if new_dir and os.getcwd() != new_dir: + os.chdir(new_dir) + + return new_dir is not None # at least one file was located and loaded + + +def show_server_banner(env, debug, app_import_path, eager_loading): + """Show extra startup messages the first time the server is run, + ignoring the reloader. + """ + if os.environ.get("WERKZEUG_RUN_MAIN") == "true": + return + + if app_import_path is not None: + message = ' * Serving Flask app "{0}"'.format(app_import_path) + + if not eager_loading: + message += " (lazy loading)" + + click.echo(message) + + click.echo(" * Environment: {0}".format(env)) + + if env == "production": + click.secho( + " WARNING: This is a development server. " + "Do not use it in a production deployment.", + fg="red", + ) + click.secho(" Use a production WSGI server instead.", dim=True) + + if debug is not None: + click.echo(" * Debug mode: {0}".format("on" if debug else "off")) + + +class CertParamType(click.ParamType): + """Click option type for the ``--cert`` option. Allows either an + existing file, the string ``'adhoc'``, or an import for a + :class:`~ssl.SSLContext` object. + """ + + name = "path" + + def __init__(self): + self.path_type = click.Path(exists=True, dir_okay=False, resolve_path=True) + + def convert(self, value, param, ctx): + if ssl is None: + raise click.BadParameter( + 'Using "--cert" requires Python to be compiled with SSL support.', + ctx, + param, + ) + + try: + return self.path_type(value, param, ctx) + except click.BadParameter: + value = click.STRING(value, param, ctx).lower() + + if value == "adhoc": + try: + import OpenSSL # noqa: F401 + except ImportError: + raise click.BadParameter( + "Using ad-hoc certificates requires pyOpenSSL.", ctx, param + ) + + return value + + obj = import_string(value, silent=True) + + if sys.version_info < (2, 7, 9): + if obj: + return obj + else: + if isinstance(obj, ssl.SSLContext): + return obj + + raise + + +def _validate_key(ctx, param, value): + """The ``--key`` option must be specified when ``--cert`` is a file. + Modifies the ``cert`` param to be a ``(cert, key)`` pair if needed. + """ + cert = ctx.params.get("cert") + is_adhoc = cert == "adhoc" + + if sys.version_info < (2, 7, 9): + is_context = cert and not isinstance(cert, (text_type, bytes)) + else: + is_context = isinstance(cert, ssl.SSLContext) + + if value is not None: + if is_adhoc: + raise click.BadParameter( + 'When "--cert" is "adhoc", "--key" is not used.', ctx, param + ) + + if is_context: + raise click.BadParameter( + 'When "--cert" is an SSLContext object, "--key is not used.', ctx, param + ) + + if not cert: + raise click.BadParameter('"--cert" must also be specified.', ctx, param) + + ctx.params["cert"] = cert, value + + else: + if cert and not (is_adhoc or is_context): + raise click.BadParameter('Required when using "--cert".', ctx, param) + + return value + + +class SeparatedPathType(click.Path): + """Click option type that accepts a list of values separated by the + OS's path separator (``:``, ``;`` on Windows). Each value is + validated as a :class:`click.Path` type. + """ + + def convert(self, value, param, ctx): + items = self.split_envvar_value(value) + super_convert = super(SeparatedPathType, self).convert + return [super_convert(item, param, ctx) for item in items] + + +@click.command("run", short_help="Run a development server.") +@click.option("--host", "-h", default="127.0.0.1", help="The interface to bind to.") +@click.option("--port", "-p", default=5000, help="The port to bind to.") +@click.option( + "--cert", type=CertParamType(), help="Specify a certificate file to use HTTPS." +) +@click.option( + "--key", + type=click.Path(exists=True, dir_okay=False, resolve_path=True), + callback=_validate_key, + expose_value=False, + help="The key file to use when specifying a certificate.", +) +@click.option( + "--reload/--no-reload", + default=None, + help="Enable or disable the reloader. By default the reloader " + "is active if debug is enabled.", +) +@click.option( + "--debugger/--no-debugger", + default=None, + help="Enable or disable the debugger. By default the debugger " + "is active if debug is enabled.", +) +@click.option( + "--eager-loading/--lazy-loader", + default=None, + help="Enable or disable eager loading. By default eager " + "loading is enabled if the reloader is disabled.", +) +@click.option( + "--with-threads/--without-threads", + default=True, + help="Enable or disable multithreading.", +) +@click.option( + "--extra-files", + default=None, + type=SeparatedPathType(), + help=( + "Extra files that trigger a reload on change. Multiple paths" + " are separated by '{}'.".format(os.path.pathsep) + ), +) +@pass_script_info +def run_command( + info, host, port, reload, debugger, eager_loading, with_threads, cert, extra_files +): + """Run a local development server. + + This server is for development purposes only. It does not provide + the stability, security, or performance of production WSGI servers. + + The reloader and debugger are enabled by default if + FLASK_ENV=development or FLASK_DEBUG=1. + """ + debug = get_debug_flag() + + if reload is None: + reload = debug + + if debugger is None: + debugger = debug + + if eager_loading is None: + eager_loading = not reload + + show_server_banner(get_env(), debug, info.app_import_path, eager_loading) + app = DispatchingApp(info.load_app, use_eager_loading=eager_loading) + + from werkzeug.serving import run_simple + + run_simple( + host, + port, + app, + use_reloader=reload, + use_debugger=debugger, + threaded=with_threads, + ssl_context=cert, + extra_files=extra_files, + ) + + +@click.command("shell", short_help="Run a shell in the app context.") +@with_appcontext +def shell_command(): + """Run an interactive Python shell in the context of a given + Flask application. The application will populate the default + namespace of this shell according to it's configuration. + + This is useful for executing small snippets of management code + without having to manually configure the application. + """ + import code + from .globals import _app_ctx_stack + + app = _app_ctx_stack.top.app + banner = "Python %s on %s\nApp: %s [%s]\nInstance: %s" % ( + sys.version, + sys.platform, + app.import_name, + app.env, + app.instance_path, + ) + ctx = {} + + # Support the regular Python interpreter startup script if someone + # is using it. + startup = os.environ.get("PYTHONSTARTUP") + if startup and os.path.isfile(startup): + with open(startup, "r") as f: + eval(compile(f.read(), startup, "exec"), ctx) + + ctx.update(app.make_shell_context()) + + code.interact(banner=banner, local=ctx) + + +@click.command("routes", short_help="Show the routes for the app.") +@click.option( + "--sort", + "-s", + type=click.Choice(("endpoint", "methods", "rule", "match")), + default="endpoint", + help=( + 'Method to sort routes by. "match" is the order that Flask will match ' + "routes when dispatching a request." + ), +) +@click.option("--all-methods", is_flag=True, help="Show HEAD and OPTIONS methods.") +@with_appcontext +def routes_command(sort, all_methods): + """Show all registered routes with endpoints and methods.""" + + rules = list(current_app.url_map.iter_rules()) + if not rules: + click.echo("No routes were registered.") + return + + ignored_methods = set(() if all_methods else ("HEAD", "OPTIONS")) + + if sort in ("endpoint", "rule"): + rules = sorted(rules, key=attrgetter(sort)) + elif sort == "methods": + rules = sorted(rules, key=lambda rule: sorted(rule.methods)) + + rule_methods = [", ".join(sorted(rule.methods - ignored_methods)) for rule in rules] + + headers = ("Endpoint", "Methods", "Rule") + widths = ( + max(len(rule.endpoint) for rule in rules), + max(len(methods) for methods in rule_methods), + max(len(rule.rule) for rule in rules), + ) + widths = [max(len(h), w) for h, w in zip(headers, widths)] + row = "{{0:<{0}}} {{1:<{1}}} {{2:<{2}}}".format(*widths) + + click.echo(row.format(*headers).strip()) + click.echo(row.format(*("-" * width for width in widths))) + + for rule, methods in zip(rules, rule_methods): + click.echo(row.format(rule.endpoint, methods, rule.rule).rstrip()) + + +cli = FlaskGroup( + help="""\ +A general utility script for Flask applications. + +Provides commands from Flask, extensions, and the application. Loads the +application defined in the FLASK_APP environment variable, or from a wsgi.py +file. Setting the FLASK_ENV environment variable to 'development' will enable +debug mode. + +\b + {prefix}{cmd} FLASK_APP=hello.py + {prefix}{cmd} FLASK_ENV=development + {prefix}flask run +""".format( + cmd="export" if os.name == "posix" else "set", + prefix="$ " if os.name == "posix" else "> ", + ) +) + + +def main(as_module=False): + # TODO omit sys.argv once https://github.com/pallets/click/issues/536 is fixed + cli.main(args=sys.argv[1:], prog_name="python -m flask" if as_module else None) + + +if __name__ == "__main__": + main(as_module=True) diff --git a/matteo_env/Lib/site-packages/flask/config.py b/matteo_env/Lib/site-packages/flask/config.py new file mode 100644 index 0000000..809de33 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/config.py @@ -0,0 +1,269 @@ +# -*- coding: utf-8 -*- +""" + flask.config + ~~~~~~~~~~~~ + + Implements the configuration related objects. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import errno +import os +import types + +from werkzeug.utils import import_string + +from . import json +from ._compat import iteritems +from ._compat import string_types + + +class ConfigAttribute(object): + """Makes an attribute forward to the config""" + + def __init__(self, name, get_converter=None): + self.__name__ = name + self.get_converter = get_converter + + def __get__(self, obj, type=None): + if obj is None: + return self + rv = obj.config[self.__name__] + if self.get_converter is not None: + rv = self.get_converter(rv) + return rv + + def __set__(self, obj, value): + obj.config[self.__name__] = value + + +class Config(dict): + """Works exactly like a dict but provides ways to fill it from files + or special dictionaries. There are two common patterns to populate the + config. + + Either you can fill the config from a config file:: + + app.config.from_pyfile('yourconfig.cfg') + + Or alternatively you can define the configuration options in the + module that calls :meth:`from_object` or provide an import path to + a module that should be loaded. It is also possible to tell it to + use the same module and with that provide the configuration values + just before the call:: + + DEBUG = True + SECRET_KEY = 'development key' + app.config.from_object(__name__) + + In both cases (loading from any Python file or loading from modules), + only uppercase keys are added to the config. This makes it possible to use + lowercase values in the config file for temporary values that are not added + to the config or to define the config keys in the same file that implements + the application. + + Probably the most interesting way to load configurations is from an + environment variable pointing to a file:: + + app.config.from_envvar('YOURAPPLICATION_SETTINGS') + + In this case before launching the application you have to set this + environment variable to the file you want to use. On Linux and OS X + use the export statement:: + + export YOURAPPLICATION_SETTINGS='/path/to/config/file' + + On windows use `set` instead. + + :param root_path: path to which files are read relative from. When the + config object is created by the application, this is + the application's :attr:`~flask.Flask.root_path`. + :param defaults: an optional dictionary of default values + """ + + def __init__(self, root_path, defaults=None): + dict.__init__(self, defaults or {}) + self.root_path = root_path + + def from_envvar(self, variable_name, silent=False): + """Loads a configuration from an environment variable pointing to + a configuration file. This is basically just a shortcut with nicer + error messages for this line of code:: + + app.config.from_pyfile(os.environ['YOURAPPLICATION_SETTINGS']) + + :param variable_name: name of the environment variable + :param silent: set to ``True`` if you want silent failure for missing + files. + :return: bool. ``True`` if able to load config, ``False`` otherwise. + """ + rv = os.environ.get(variable_name) + if not rv: + if silent: + return False + raise RuntimeError( + "The environment variable %r is not set " + "and as such configuration could not be " + "loaded. Set this variable and make it " + "point to a configuration file" % variable_name + ) + return self.from_pyfile(rv, silent=silent) + + def from_pyfile(self, filename, silent=False): + """Updates the values in the config from a Python file. This function + behaves as if the file was imported as module with the + :meth:`from_object` function. + + :param filename: the filename of the config. This can either be an + absolute filename or a filename relative to the + root path. + :param silent: set to ``True`` if you want silent failure for missing + files. + + .. versionadded:: 0.7 + `silent` parameter. + """ + filename = os.path.join(self.root_path, filename) + d = types.ModuleType("config") + d.__file__ = filename + try: + with open(filename, mode="rb") as config_file: + exec(compile(config_file.read(), filename, "exec"), d.__dict__) + except IOError as e: + if silent and e.errno in (errno.ENOENT, errno.EISDIR, errno.ENOTDIR): + return False + e.strerror = "Unable to load configuration file (%s)" % e.strerror + raise + self.from_object(d) + return True + + def from_object(self, obj): + """Updates the values from the given object. An object can be of one + of the following two types: + + - a string: in this case the object with that name will be imported + - an actual object reference: that object is used directly + + Objects are usually either modules or classes. :meth:`from_object` + loads only the uppercase attributes of the module/class. A ``dict`` + object will not work with :meth:`from_object` because the keys of a + ``dict`` are not attributes of the ``dict`` class. + + Example of module-based configuration:: + + app.config.from_object('yourapplication.default_config') + from yourapplication import default_config + app.config.from_object(default_config) + + Nothing is done to the object before loading. If the object is a + class and has ``@property`` attributes, it needs to be + instantiated before being passed to this method. + + You should not use this function to load the actual configuration but + rather configuration defaults. The actual config should be loaded + with :meth:`from_pyfile` and ideally from a location not within the + package because the package might be installed system wide. + + See :ref:`config-dev-prod` for an example of class-based configuration + using :meth:`from_object`. + + :param obj: an import name or object + """ + if isinstance(obj, string_types): + obj = import_string(obj) + for key in dir(obj): + if key.isupper(): + self[key] = getattr(obj, key) + + def from_json(self, filename, silent=False): + """Updates the values in the config from a JSON file. This function + behaves as if the JSON object was a dictionary and passed to the + :meth:`from_mapping` function. + + :param filename: the filename of the JSON file. This can either be an + absolute filename or a filename relative to the + root path. + :param silent: set to ``True`` if you want silent failure for missing + files. + + .. versionadded:: 0.11 + """ + filename = os.path.join(self.root_path, filename) + + try: + with open(filename) as json_file: + obj = json.loads(json_file.read()) + except IOError as e: + if silent and e.errno in (errno.ENOENT, errno.EISDIR): + return False + e.strerror = "Unable to load configuration file (%s)" % e.strerror + raise + return self.from_mapping(obj) + + def from_mapping(self, *mapping, **kwargs): + """Updates the config like :meth:`update` ignoring items with non-upper + keys. + + .. versionadded:: 0.11 + """ + mappings = [] + if len(mapping) == 1: + if hasattr(mapping[0], "items"): + mappings.append(mapping[0].items()) + else: + mappings.append(mapping[0]) + elif len(mapping) > 1: + raise TypeError( + "expected at most 1 positional argument, got %d" % len(mapping) + ) + mappings.append(kwargs.items()) + for mapping in mappings: + for (key, value) in mapping: + if key.isupper(): + self[key] = value + return True + + def get_namespace(self, namespace, lowercase=True, trim_namespace=True): + """Returns a dictionary containing a subset of configuration options + that match the specified namespace/prefix. Example usage:: + + app.config['IMAGE_STORE_TYPE'] = 'fs' + app.config['IMAGE_STORE_PATH'] = '/var/app/images' + app.config['IMAGE_STORE_BASE_URL'] = 'http://img.website.com' + image_store_config = app.config.get_namespace('IMAGE_STORE_') + + The resulting dictionary `image_store_config` would look like:: + + { + 'type': 'fs', + 'path': '/var/app/images', + 'base_url': 'http://img.website.com' + } + + This is often useful when configuration options map directly to + keyword arguments in functions or class constructors. + + :param namespace: a configuration namespace + :param lowercase: a flag indicating if the keys of the resulting + dictionary should be lowercase + :param trim_namespace: a flag indicating if the keys of the resulting + dictionary should not include the namespace + + .. versionadded:: 0.11 + """ + rv = {} + for k, v in iteritems(self): + if not k.startswith(namespace): + continue + if trim_namespace: + key = k[len(namespace) :] + else: + key = k + if lowercase: + key = key.lower() + rv[key] = v + return rv + + def __repr__(self): + return "<%s %s>" % (self.__class__.__name__, dict.__repr__(self)) diff --git a/matteo_env/Lib/site-packages/flask/ctx.py b/matteo_env/Lib/site-packages/flask/ctx.py new file mode 100644 index 0000000..172f6a0 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/ctx.py @@ -0,0 +1,475 @@ +# -*- coding: utf-8 -*- +""" + flask.ctx + ~~~~~~~~~ + + Implements the objects required to keep the context. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import sys +from functools import update_wrapper + +from werkzeug.exceptions import HTTPException + +from ._compat import BROKEN_PYPY_CTXMGR_EXIT +from ._compat import reraise +from .globals import _app_ctx_stack +from .globals import _request_ctx_stack +from .signals import appcontext_popped +from .signals import appcontext_pushed + + +# a singleton sentinel value for parameter defaults +_sentinel = object() + + +class _AppCtxGlobals(object): + """A plain object. Used as a namespace for storing data during an + application context. + + Creating an app context automatically creates this object, which is + made available as the :data:`g` proxy. + + .. describe:: 'key' in g + + Check whether an attribute is present. + + .. versionadded:: 0.10 + + .. describe:: iter(g) + + Return an iterator over the attribute names. + + .. versionadded:: 0.10 + """ + + def get(self, name, default=None): + """Get an attribute by name, or a default value. Like + :meth:`dict.get`. + + :param name: Name of attribute to get. + :param default: Value to return if the attribute is not present. + + .. versionadded:: 0.10 + """ + return self.__dict__.get(name, default) + + def pop(self, name, default=_sentinel): + """Get and remove an attribute by name. Like :meth:`dict.pop`. + + :param name: Name of attribute to pop. + :param default: Value to return if the attribute is not present, + instead of raise a ``KeyError``. + + .. versionadded:: 0.11 + """ + if default is _sentinel: + return self.__dict__.pop(name) + else: + return self.__dict__.pop(name, default) + + def setdefault(self, name, default=None): + """Get the value of an attribute if it is present, otherwise + set and return a default value. Like :meth:`dict.setdefault`. + + :param name: Name of attribute to get. + :param: default: Value to set and return if the attribute is not + present. + + .. versionadded:: 0.11 + """ + return self.__dict__.setdefault(name, default) + + def __contains__(self, item): + return item in self.__dict__ + + def __iter__(self): + return iter(self.__dict__) + + def __repr__(self): + top = _app_ctx_stack.top + if top is not None: + return "" % top.app.name + return object.__repr__(self) + + +def after_this_request(f): + """Executes a function after this request. This is useful to modify + response objects. The function is passed the response object and has + to return the same or a new one. + + Example:: + + @app.route('/') + def index(): + @after_this_request + def add_header(response): + response.headers['X-Foo'] = 'Parachute' + return response + return 'Hello World!' + + This is more useful if a function other than the view function wants to + modify a response. For instance think of a decorator that wants to add + some headers without converting the return value into a response object. + + .. versionadded:: 0.9 + """ + _request_ctx_stack.top._after_request_functions.append(f) + return f + + +def copy_current_request_context(f): + """A helper function that decorates a function to retain the current + request context. This is useful when working with greenlets. The moment + the function is decorated a copy of the request context is created and + then pushed when the function is called. The current session is also + included in the copied request context. + + Example:: + + import gevent + from flask import copy_current_request_context + + @app.route('/') + def index(): + @copy_current_request_context + def do_some_work(): + # do some work here, it can access flask.request or + # flask.session like you would otherwise in the view function. + ... + gevent.spawn(do_some_work) + return 'Regular response' + + .. versionadded:: 0.10 + """ + top = _request_ctx_stack.top + if top is None: + raise RuntimeError( + "This decorator can only be used at local scopes " + "when a request context is on the stack. For instance within " + "view functions." + ) + reqctx = top.copy() + + def wrapper(*args, **kwargs): + with reqctx: + return f(*args, **kwargs) + + return update_wrapper(wrapper, f) + + +def has_request_context(): + """If you have code that wants to test if a request context is there or + not this function can be used. For instance, you may want to take advantage + of request information if the request object is available, but fail + silently if it is unavailable. + + :: + + class User(db.Model): + + def __init__(self, username, remote_addr=None): + self.username = username + if remote_addr is None and has_request_context(): + remote_addr = request.remote_addr + self.remote_addr = remote_addr + + Alternatively you can also just test any of the context bound objects + (such as :class:`request` or :class:`g`) for truthness:: + + class User(db.Model): + + def __init__(self, username, remote_addr=None): + self.username = username + if remote_addr is None and request: + remote_addr = request.remote_addr + self.remote_addr = remote_addr + + .. versionadded:: 0.7 + """ + return _request_ctx_stack.top is not None + + +def has_app_context(): + """Works like :func:`has_request_context` but for the application + context. You can also just do a boolean check on the + :data:`current_app` object instead. + + .. versionadded:: 0.9 + """ + return _app_ctx_stack.top is not None + + +class AppContext(object): + """The application context binds an application object implicitly + to the current thread or greenlet, similar to how the + :class:`RequestContext` binds request information. The application + context is also implicitly created if a request context is created + but the application is not on top of the individual application + context. + """ + + def __init__(self, app): + self.app = app + self.url_adapter = app.create_url_adapter(None) + self.g = app.app_ctx_globals_class() + + # Like request context, app contexts can be pushed multiple times + # but there a basic "refcount" is enough to track them. + self._refcnt = 0 + + def push(self): + """Binds the app context to the current context.""" + self._refcnt += 1 + if hasattr(sys, "exc_clear"): + sys.exc_clear() + _app_ctx_stack.push(self) + appcontext_pushed.send(self.app) + + def pop(self, exc=_sentinel): + """Pops the app context.""" + try: + self._refcnt -= 1 + if self._refcnt <= 0: + if exc is _sentinel: + exc = sys.exc_info()[1] + self.app.do_teardown_appcontext(exc) + finally: + rv = _app_ctx_stack.pop() + assert rv is self, "Popped wrong app context. (%r instead of %r)" % (rv, self) + appcontext_popped.send(self.app) + + def __enter__(self): + self.push() + return self + + def __exit__(self, exc_type, exc_value, tb): + self.pop(exc_value) + + if BROKEN_PYPY_CTXMGR_EXIT and exc_type is not None: + reraise(exc_type, exc_value, tb) + + +class RequestContext(object): + """The request context contains all request relevant information. It is + created at the beginning of the request and pushed to the + `_request_ctx_stack` and removed at the end of it. It will create the + URL adapter and request object for the WSGI environment provided. + + Do not attempt to use this class directly, instead use + :meth:`~flask.Flask.test_request_context` and + :meth:`~flask.Flask.request_context` to create this object. + + When the request context is popped, it will evaluate all the + functions registered on the application for teardown execution + (:meth:`~flask.Flask.teardown_request`). + + The request context is automatically popped at the end of the request + for you. In debug mode the request context is kept around if + exceptions happen so that interactive debuggers have a chance to + introspect the data. With 0.4 this can also be forced for requests + that did not fail and outside of ``DEBUG`` mode. By setting + ``'flask._preserve_context'`` to ``True`` on the WSGI environment the + context will not pop itself at the end of the request. This is used by + the :meth:`~flask.Flask.test_client` for example to implement the + deferred cleanup functionality. + + You might find this helpful for unittests where you need the + information from the context local around for a little longer. Make + sure to properly :meth:`~werkzeug.LocalStack.pop` the stack yourself in + that situation, otherwise your unittests will leak memory. + """ + + def __init__(self, app, environ, request=None, session=None): + self.app = app + if request is None: + request = app.request_class(environ) + self.request = request + self.url_adapter = None + try: + self.url_adapter = app.create_url_adapter(self.request) + except HTTPException as e: + self.request.routing_exception = e + self.flashes = None + self.session = session + + # Request contexts can be pushed multiple times and interleaved with + # other request contexts. Now only if the last level is popped we + # get rid of them. Additionally if an application context is missing + # one is created implicitly so for each level we add this information + self._implicit_app_ctx_stack = [] + + # indicator if the context was preserved. Next time another context + # is pushed the preserved context is popped. + self.preserved = False + + # remembers the exception for pop if there is one in case the context + # preservation kicks in. + self._preserved_exc = None + + # Functions that should be executed after the request on the response + # object. These will be called before the regular "after_request" + # functions. + self._after_request_functions = [] + + @property + def g(self): + return _app_ctx_stack.top.g + + @g.setter + def g(self, value): + _app_ctx_stack.top.g = value + + def copy(self): + """Creates a copy of this request context with the same request object. + This can be used to move a request context to a different greenlet. + Because the actual request object is the same this cannot be used to + move a request context to a different thread unless access to the + request object is locked. + + .. versionadded:: 0.10 + + .. versionchanged:: 1.1 + The current session object is used instead of reloading the original + data. This prevents `flask.session` pointing to an out-of-date object. + """ + return self.__class__( + self.app, + environ=self.request.environ, + request=self.request, + session=self.session, + ) + + def match_request(self): + """Can be overridden by a subclass to hook into the matching + of the request. + """ + try: + result = self.url_adapter.match(return_rule=True) + self.request.url_rule, self.request.view_args = result + except HTTPException as e: + self.request.routing_exception = e + + def push(self): + """Binds the request context to the current context.""" + # If an exception occurs in debug mode or if context preservation is + # activated under exception situations exactly one context stays + # on the stack. The rationale is that you want to access that + # information under debug situations. However if someone forgets to + # pop that context again we want to make sure that on the next push + # it's invalidated, otherwise we run at risk that something leaks + # memory. This is usually only a problem in test suite since this + # functionality is not active in production environments. + top = _request_ctx_stack.top + if top is not None and top.preserved: + top.pop(top._preserved_exc) + + # Before we push the request context we have to ensure that there + # is an application context. + app_ctx = _app_ctx_stack.top + if app_ctx is None or app_ctx.app != self.app: + app_ctx = self.app.app_context() + app_ctx.push() + self._implicit_app_ctx_stack.append(app_ctx) + else: + self._implicit_app_ctx_stack.append(None) + + if hasattr(sys, "exc_clear"): + sys.exc_clear() + + _request_ctx_stack.push(self) + + # Open the session at the moment that the request context is available. + # This allows a custom open_session method to use the request context. + # Only open a new session if this is the first time the request was + # pushed, otherwise stream_with_context loses the session. + if self.session is None: + session_interface = self.app.session_interface + self.session = session_interface.open_session(self.app, self.request) + + if self.session is None: + self.session = session_interface.make_null_session(self.app) + + if self.url_adapter is not None: + self.match_request() + + def pop(self, exc=_sentinel): + """Pops the request context and unbinds it by doing that. This will + also trigger the execution of functions registered by the + :meth:`~flask.Flask.teardown_request` decorator. + + .. versionchanged:: 0.9 + Added the `exc` argument. + """ + app_ctx = self._implicit_app_ctx_stack.pop() + + try: + clear_request = False + if not self._implicit_app_ctx_stack: + self.preserved = False + self._preserved_exc = None + if exc is _sentinel: + exc = sys.exc_info()[1] + self.app.do_teardown_request(exc) + + # If this interpreter supports clearing the exception information + # we do that now. This will only go into effect on Python 2.x, + # on 3.x it disappears automatically at the end of the exception + # stack. + if hasattr(sys, "exc_clear"): + sys.exc_clear() + + request_close = getattr(self.request, "close", None) + if request_close is not None: + request_close() + clear_request = True + finally: + rv = _request_ctx_stack.pop() + + # get rid of circular dependencies at the end of the request + # so that we don't require the GC to be active. + if clear_request: + rv.request.environ["werkzeug.request"] = None + + # Get rid of the app as well if necessary. + if app_ctx is not None: + app_ctx.pop(exc) + + assert rv is self, "Popped wrong request context. (%r instead of %r)" % ( + rv, + self, + ) + + def auto_pop(self, exc): + if self.request.environ.get("flask._preserve_context") or ( + exc is not None and self.app.preserve_context_on_exception + ): + self.preserved = True + self._preserved_exc = exc + else: + self.pop(exc) + + def __enter__(self): + self.push() + return self + + def __exit__(self, exc_type, exc_value, tb): + # do not pop the request stack if we are in debug mode and an + # exception happened. This will allow the debugger to still + # access the request object in the interactive shell. Furthermore + # the context can be force kept alive for the test client. + # See flask.testing for how this works. + self.auto_pop(exc_value) + + if BROKEN_PYPY_CTXMGR_EXIT and exc_type is not None: + reraise(exc_type, exc_value, tb) + + def __repr__(self): + return "<%s '%s' [%s] of %s>" % ( + self.__class__.__name__, + self.request.url, + self.request.method, + self.app.name, + ) diff --git a/matteo_env/Lib/site-packages/flask/debughelpers.py b/matteo_env/Lib/site-packages/flask/debughelpers.py new file mode 100644 index 0000000..e475bd1 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/debughelpers.py @@ -0,0 +1,183 @@ +# -*- coding: utf-8 -*- +""" + flask.debughelpers + ~~~~~~~~~~~~~~~~~~ + + Various helpers to make the development experience better. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import os +from warnings import warn + +from ._compat import implements_to_string +from ._compat import text_type +from .app import Flask +from .blueprints import Blueprint +from .globals import _request_ctx_stack + + +class UnexpectedUnicodeError(AssertionError, UnicodeError): + """Raised in places where we want some better error reporting for + unexpected unicode or binary data. + """ + + +@implements_to_string +class DebugFilesKeyError(KeyError, AssertionError): + """Raised from request.files during debugging. The idea is that it can + provide a better error message than just a generic KeyError/BadRequest. + """ + + def __init__(self, request, key): + form_matches = request.form.getlist(key) + buf = [ + 'You tried to access the file "%s" in the request.files ' + "dictionary but it does not exist. The mimetype for the request " + 'is "%s" instead of "multipart/form-data" which means that no ' + "file contents were transmitted. To fix this error you should " + 'provide enctype="multipart/form-data" in your form.' + % (key, request.mimetype) + ] + if form_matches: + buf.append( + "\n\nThe browser instead transmitted some file names. " + "This was submitted: %s" % ", ".join('"%s"' % x for x in form_matches) + ) + self.msg = "".join(buf) + + def __str__(self): + return self.msg + + +class FormDataRoutingRedirect(AssertionError): + """This exception is raised by Flask in debug mode if it detects a + redirect caused by the routing system when the request method is not + GET, HEAD or OPTIONS. Reasoning: form data will be dropped. + """ + + def __init__(self, request): + exc = request.routing_exception + buf = [ + "A request was sent to this URL (%s) but a redirect was " + 'issued automatically by the routing system to "%s".' + % (request.url, exc.new_url) + ] + + # In case just a slash was appended we can be extra helpful + if request.base_url + "/" == exc.new_url.split("?")[0]: + buf.append( + " The URL was defined with a trailing slash so " + "Flask will automatically redirect to the URL " + "with the trailing slash if it was accessed " + "without one." + ) + + buf.append( + " Make sure to directly send your %s-request to this URL " + "since we can't make browsers or HTTP clients redirect " + "with form data reliably or without user interaction." % request.method + ) + buf.append("\n\nNote: this exception is only raised in debug mode") + AssertionError.__init__(self, "".join(buf).encode("utf-8")) + + +def attach_enctype_error_multidict(request): + """Since Flask 0.8 we're monkeypatching the files object in case a + request is detected that does not use multipart form data but the files + object is accessed. + """ + oldcls = request.files.__class__ + + class newcls(oldcls): + def __getitem__(self, key): + try: + return oldcls.__getitem__(self, key) + except KeyError: + if key not in request.form: + raise + raise DebugFilesKeyError(request, key) + + newcls.__name__ = oldcls.__name__ + newcls.__module__ = oldcls.__module__ + request.files.__class__ = newcls + + +def _dump_loader_info(loader): + yield "class: %s.%s" % (type(loader).__module__, type(loader).__name__) + for key, value in sorted(loader.__dict__.items()): + if key.startswith("_"): + continue + if isinstance(value, (tuple, list)): + if not all(isinstance(x, (str, text_type)) for x in value): + continue + yield "%s:" % key + for item in value: + yield " - %s" % item + continue + elif not isinstance(value, (str, text_type, int, float, bool)): + continue + yield "%s: %r" % (key, value) + + +def explain_template_loading_attempts(app, template, attempts): + """This should help developers understand what failed""" + info = ['Locating template "%s":' % template] + total_found = 0 + blueprint = None + reqctx = _request_ctx_stack.top + if reqctx is not None and reqctx.request.blueprint is not None: + blueprint = reqctx.request.blueprint + + for idx, (loader, srcobj, triple) in enumerate(attempts): + if isinstance(srcobj, Flask): + src_info = 'application "%s"' % srcobj.import_name + elif isinstance(srcobj, Blueprint): + src_info = 'blueprint "%s" (%s)' % (srcobj.name, srcobj.import_name) + else: + src_info = repr(srcobj) + + info.append("% 5d: trying loader of %s" % (idx + 1, src_info)) + + for line in _dump_loader_info(loader): + info.append(" %s" % line) + + if triple is None: + detail = "no match" + else: + detail = "found (%r)" % (triple[1] or "") + total_found += 1 + info.append(" -> %s" % detail) + + seems_fishy = False + if total_found == 0: + info.append("Error: the template could not be found.") + seems_fishy = True + elif total_found > 1: + info.append("Warning: multiple loaders returned a match for the template.") + seems_fishy = True + + if blueprint is not None and seems_fishy: + info.append( + " The template was looked up from an endpoint that " + 'belongs to the blueprint "%s".' % blueprint + ) + info.append(" Maybe you did not place a template in the right folder?") + info.append(" See http://flask.pocoo.org/docs/blueprints/#templates") + + app.logger.info("\n".join(info)) + + +def explain_ignored_app_run(): + if os.environ.get("WERKZEUG_RUN_MAIN") != "true": + warn( + Warning( + "Silently ignoring app.run() because the " + "application is run from the flask command line " + "executable. Consider putting app.run() behind an " + 'if __name__ == "__main__" guard to silence this ' + "warning." + ), + stacklevel=3, + ) diff --git a/matteo_env/Lib/site-packages/flask/globals.py b/matteo_env/Lib/site-packages/flask/globals.py new file mode 100644 index 0000000..6d32dcf --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/globals.py @@ -0,0 +1,62 @@ +# -*- coding: utf-8 -*- +""" + flask.globals + ~~~~~~~~~~~~~ + + Defines all the global objects that are proxies to the current + active context. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +from functools import partial + +from werkzeug.local import LocalProxy +from werkzeug.local import LocalStack + + +_request_ctx_err_msg = """\ +Working outside of request context. + +This typically means that you attempted to use functionality that needed +an active HTTP request. Consult the documentation on testing for +information about how to avoid this problem.\ +""" +_app_ctx_err_msg = """\ +Working outside of application context. + +This typically means that you attempted to use functionality that needed +to interface with the current application object in some way. To solve +this, set up an application context with app.app_context(). See the +documentation for more information.\ +""" + + +def _lookup_req_object(name): + top = _request_ctx_stack.top + if top is None: + raise RuntimeError(_request_ctx_err_msg) + return getattr(top, name) + + +def _lookup_app_object(name): + top = _app_ctx_stack.top + if top is None: + raise RuntimeError(_app_ctx_err_msg) + return getattr(top, name) + + +def _find_app(): + top = _app_ctx_stack.top + if top is None: + raise RuntimeError(_app_ctx_err_msg) + return top.app + + +# context locals +_request_ctx_stack = LocalStack() +_app_ctx_stack = LocalStack() +current_app = LocalProxy(_find_app) +request = LocalProxy(partial(_lookup_req_object, "request")) +session = LocalProxy(partial(_lookup_req_object, "session")) +g = LocalProxy(partial(_lookup_app_object, "g")) diff --git a/matteo_env/Lib/site-packages/flask/helpers.py b/matteo_env/Lib/site-packages/flask/helpers.py new file mode 100644 index 0000000..df06db8 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/helpers.py @@ -0,0 +1,1155 @@ +# -*- coding: utf-8 -*- +""" + flask.helpers + ~~~~~~~~~~~~~ + + Implements various helpers. + + :copyright: 2010 Pallets + :license: BSD-3-Clause +""" +import io +import mimetypes +import os +import pkgutil +import posixpath +import socket +import sys +import unicodedata +from functools import update_wrapper +from threading import RLock +from time import time +from zlib import adler32 + +from jinja2 import FileSystemLoader +from werkzeug.datastructures import Headers +from werkzeug.exceptions import BadRequest +from werkzeug.exceptions import NotFound +from werkzeug.exceptions import RequestedRangeNotSatisfiable +from werkzeug.routing import BuildError +from werkzeug.urls import url_quote +from werkzeug.wsgi import wrap_file + +from ._compat import fspath +from ._compat import PY2 +from ._compat import string_types +from ._compat import text_type +from .globals import _app_ctx_stack +from .globals import _request_ctx_stack +from .globals import current_app +from .globals import request +from .globals import session +from .signals import message_flashed + +# sentinel +_missing = object() + + +# what separators does this operating system provide that are not a slash? +# this is used by the send_from_directory function to ensure that nobody is +# able to access files from outside the filesystem. +_os_alt_seps = list( + sep for sep in [os.path.sep, os.path.altsep] if sep not in (None, "/") +) + + +def get_env(): + """Get the environment the app is running in, indicated by the + :envvar:`FLASK_ENV` environment variable. The default is + ``'production'``. + """ + return os.environ.get("FLASK_ENV") or "production" + + +def get_debug_flag(): + """Get whether debug mode should be enabled for the app, indicated + by the :envvar:`FLASK_DEBUG` environment variable. The default is + ``True`` if :func:`.get_env` returns ``'development'``, or ``False`` + otherwise. + """ + val = os.environ.get("FLASK_DEBUG") + + if not val: + return get_env() == "development" + + return val.lower() not in ("0", "false", "no") + + +def get_load_dotenv(default=True): + """Get whether the user has disabled loading dotenv files by setting + :envvar:`FLASK_SKIP_DOTENV`. The default is ``True``, load the + files. + + :param default: What to return if the env var isn't set. + """ + val = os.environ.get("FLASK_SKIP_DOTENV") + + if not val: + return default + + return val.lower() in ("0", "false", "no") + + +def _endpoint_from_view_func(view_func): + """Internal helper that returns the default endpoint for a given + function. This always is the function name. + """ + assert view_func is not None, "expected view func if endpoint is not provided." + return view_func.__name__ + + +def stream_with_context(generator_or_function): + """Request contexts disappear when the response is started on the server. + This is done for efficiency reasons and to make it less likely to encounter + memory leaks with badly written WSGI middlewares. The downside is that if + you are using streamed responses, the generator cannot access request bound + information any more. + + This function however can help you keep the context around for longer:: + + from flask import stream_with_context, request, Response + + @app.route('/stream') + def streamed_response(): + @stream_with_context + def generate(): + yield 'Hello ' + yield request.args['name'] + yield '!' + return Response(generate()) + + Alternatively it can also be used around a specific generator:: + + from flask import stream_with_context, request, Response + + @app.route('/stream') + def streamed_response(): + def generate(): + yield 'Hello ' + yield request.args['name'] + yield '!' + return Response(stream_with_context(generate())) + + .. versionadded:: 0.9 + """ + try: + gen = iter(generator_or_function) + except TypeError: + + def decorator(*args, **kwargs): + gen = generator_or_function(*args, **kwargs) + return stream_with_context(gen) + + return update_wrapper(decorator, generator_or_function) + + def generator(): + ctx = _request_ctx_stack.top + if ctx is None: + raise RuntimeError( + "Attempted to stream with context but " + "there was no context in the first place to keep around." + ) + with ctx: + # Dummy sentinel. Has to be inside the context block or we're + # not actually keeping the context around. + yield None + + # The try/finally is here so that if someone passes a WSGI level + # iterator in we're still running the cleanup logic. Generators + # don't need that because they are closed on their destruction + # automatically. + try: + for item in gen: + yield item + finally: + if hasattr(gen, "close"): + gen.close() + + # The trick is to start the generator. Then the code execution runs until + # the first dummy None is yielded at which point the context was already + # pushed. This item is discarded. Then when the iteration continues the + # real generator is executed. + wrapped_g = generator() + next(wrapped_g) + return wrapped_g + + +def make_response(*args): + """Sometimes it is necessary to set additional headers in a view. Because + views do not have to return response objects but can return a value that + is converted into a response object by Flask itself, it becomes tricky to + add headers to it. This function can be called instead of using a return + and you will get a response object which you can use to attach headers. + + If view looked like this and you want to add a new header:: + + def index(): + return render_template('index.html', foo=42) + + You can now do something like this:: + + def index(): + response = make_response(render_template('index.html', foo=42)) + response.headers['X-Parachutes'] = 'parachutes are cool' + return response + + This function accepts the very same arguments you can return from a + view function. This for example creates a response with a 404 error + code:: + + response = make_response(render_template('not_found.html'), 404) + + The other use case of this function is to force the return value of a + view function into a response which is helpful with view + decorators:: + + response = make_response(view_function()) + response.headers['X-Parachutes'] = 'parachutes are cool' + + Internally this function does the following things: + + - if no arguments are passed, it creates a new response argument + - if one argument is passed, :meth:`flask.Flask.make_response` + is invoked with it. + - if more than one argument is passed, the arguments are passed + to the :meth:`flask.Flask.make_response` function as tuple. + + .. versionadded:: 0.6 + """ + if not args: + return current_app.response_class() + if len(args) == 1: + args = args[0] + return current_app.make_response(args) + + +def url_for(endpoint, **values): + """Generates a URL to the given endpoint with the method provided. + + Variable arguments that are unknown to the target endpoint are appended + to the generated URL as query arguments. If the value of a query argument + is ``None``, the whole pair is skipped. In case blueprints are active + you can shortcut references to the same blueprint by prefixing the + local endpoint with a dot (``.``). + + This will reference the index function local to the current blueprint:: + + url_for('.index') + + For more information, head over to the :ref:`Quickstart `. + + Configuration values ``APPLICATION_ROOT`` and ``SERVER_NAME`` are only used when + generating URLs outside of a request context. + + To integrate applications, :class:`Flask` has a hook to intercept URL build + errors through :attr:`Flask.url_build_error_handlers`. The `url_for` + function results in a :exc:`~werkzeug.routing.BuildError` when the current + app does not have a URL for the given endpoint and values. When it does, the + :data:`~flask.current_app` calls its :attr:`~Flask.url_build_error_handlers` if + it is not ``None``, which can return a string to use as the result of + `url_for` (instead of `url_for`'s default to raise the + :exc:`~werkzeug.routing.BuildError` exception) or re-raise the exception. + An example:: + + def external_url_handler(error, endpoint, values): + "Looks up an external URL when `url_for` cannot build a URL." + # This is an example of hooking the build_error_handler. + # Here, lookup_url is some utility function you've built + # which looks up the endpoint in some external URL registry. + url = lookup_url(endpoint, **values) + if url is None: + # External lookup did not have a URL. + # Re-raise the BuildError, in context of original traceback. + exc_type, exc_value, tb = sys.exc_info() + if exc_value is error: + raise exc_type, exc_value, tb + else: + raise error + # url_for will use this result, instead of raising BuildError. + return url + + app.url_build_error_handlers.append(external_url_handler) + + Here, `error` is the instance of :exc:`~werkzeug.routing.BuildError`, and + `endpoint` and `values` are the arguments passed into `url_for`. Note + that this is for building URLs outside the current application, and not for + handling 404 NotFound errors. + + .. versionadded:: 0.10 + The `_scheme` parameter was added. + + .. versionadded:: 0.9 + The `_anchor` and `_method` parameters were added. + + .. versionadded:: 0.9 + Calls :meth:`Flask.handle_build_error` on + :exc:`~werkzeug.routing.BuildError`. + + :param endpoint: the endpoint of the URL (name of the function) + :param values: the variable arguments of the URL rule + :param _external: if set to ``True``, an absolute URL is generated. Server + address can be changed via ``SERVER_NAME`` configuration variable which + falls back to the `Host` header, then to the IP and port of the request. + :param _scheme: a string specifying the desired URL scheme. The `_external` + parameter must be set to ``True`` or a :exc:`ValueError` is raised. The default + behavior uses the same scheme as the current request, or + ``PREFERRED_URL_SCHEME`` from the :ref:`app configuration ` if no + request context is available. As of Werkzeug 0.10, this also can be set + to an empty string to build protocol-relative URLs. + :param _anchor: if provided this is added as anchor to the URL. + :param _method: if provided this explicitly specifies an HTTP method. + """ + appctx = _app_ctx_stack.top + reqctx = _request_ctx_stack.top + + if appctx is None: + raise RuntimeError( + "Attempted to generate a URL without the application context being" + " pushed. This has to be executed when application context is" + " available." + ) + + # If request specific information is available we have some extra + # features that support "relative" URLs. + if reqctx is not None: + url_adapter = reqctx.url_adapter + blueprint_name = request.blueprint + + if endpoint[:1] == ".": + if blueprint_name is not None: + endpoint = blueprint_name + endpoint + else: + endpoint = endpoint[1:] + + external = values.pop("_external", False) + + # Otherwise go with the url adapter from the appctx and make + # the URLs external by default. + else: + url_adapter = appctx.url_adapter + + if url_adapter is None: + raise RuntimeError( + "Application was not able to create a URL adapter for request" + " independent URL generation. You might be able to fix this by" + " setting the SERVER_NAME config variable." + ) + + external = values.pop("_external", True) + + anchor = values.pop("_anchor", None) + method = values.pop("_method", None) + scheme = values.pop("_scheme", None) + appctx.app.inject_url_defaults(endpoint, values) + + # This is not the best way to deal with this but currently the + # underlying Werkzeug router does not support overriding the scheme on + # a per build call basis. + old_scheme = None + if scheme is not None: + if not external: + raise ValueError("When specifying _scheme, _external must be True") + old_scheme = url_adapter.url_scheme + url_adapter.url_scheme = scheme + + try: + try: + rv = url_adapter.build( + endpoint, values, method=method, force_external=external + ) + finally: + if old_scheme is not None: + url_adapter.url_scheme = old_scheme + except BuildError as error: + # We need to inject the values again so that the app callback can + # deal with that sort of stuff. + values["_external"] = external + values["_anchor"] = anchor + values["_method"] = method + values["_scheme"] = scheme + return appctx.app.handle_url_build_error(error, endpoint, values) + + if anchor is not None: + rv += "#" + url_quote(anchor) + return rv + + +def get_template_attribute(template_name, attribute): + """Loads a macro (or variable) a template exports. This can be used to + invoke a macro from within Python code. If you for example have a + template named :file:`_cider.html` with the following contents: + + .. sourcecode:: html+jinja + + {% macro hello(name) %}Hello {{ name }}!{% endmacro %} + + You can access this from Python code like this:: + + hello = get_template_attribute('_cider.html', 'hello') + return hello('World') + + .. versionadded:: 0.2 + + :param template_name: the name of the template + :param attribute: the name of the variable of macro to access + """ + return getattr(current_app.jinja_env.get_template(template_name).module, attribute) + + +def flash(message, category="message"): + """Flashes a message to the next request. In order to remove the + flashed message from the session and to display it to the user, + the template has to call :func:`get_flashed_messages`. + + .. versionchanged:: 0.3 + `category` parameter added. + + :param message: the message to be flashed. + :param category: the category for the message. The following values + are recommended: ``'message'`` for any kind of message, + ``'error'`` for errors, ``'info'`` for information + messages and ``'warning'`` for warnings. However any + kind of string can be used as category. + """ + # Original implementation: + # + # session.setdefault('_flashes', []).append((category, message)) + # + # This assumed that changes made to mutable structures in the session are + # always in sync with the session object, which is not true for session + # implementations that use external storage for keeping their keys/values. + flashes = session.get("_flashes", []) + flashes.append((category, message)) + session["_flashes"] = flashes + message_flashed.send( + current_app._get_current_object(), message=message, category=category + ) + + +def get_flashed_messages(with_categories=False, category_filter=()): + """Pulls all flashed messages from the session and returns them. + Further calls in the same request to the function will return + the same messages. By default just the messages are returned, + but when `with_categories` is set to ``True``, the return value will + be a list of tuples in the form ``(category, message)`` instead. + + Filter the flashed messages to one or more categories by providing those + categories in `category_filter`. This allows rendering categories in + separate html blocks. The `with_categories` and `category_filter` + arguments are distinct: + + * `with_categories` controls whether categories are returned with message + text (``True`` gives a tuple, where ``False`` gives just the message text). + * `category_filter` filters the messages down to only those matching the + provided categories. + + See :ref:`message-flashing-pattern` for examples. + + .. versionchanged:: 0.3 + `with_categories` parameter added. + + .. versionchanged:: 0.9 + `category_filter` parameter added. + + :param with_categories: set to ``True`` to also receive categories. + :param category_filter: whitelist of categories to limit return values + """ + flashes = _request_ctx_stack.top.flashes + if flashes is None: + _request_ctx_stack.top.flashes = flashes = ( + session.pop("_flashes") if "_flashes" in session else [] + ) + if category_filter: + flashes = list(filter(lambda f: f[0] in category_filter, flashes)) + if not with_categories: + return [x[1] for x in flashes] + return flashes + + +def send_file( + filename_or_fp, + mimetype=None, + as_attachment=False, + attachment_filename=None, + add_etags=True, + cache_timeout=None, + conditional=False, + last_modified=None, +): + """Sends the contents of a file to the client. This will use the + most efficient method available and configured. By default it will + try to use the WSGI server's file_wrapper support. Alternatively + you can set the application's :attr:`~Flask.use_x_sendfile` attribute + to ``True`` to directly emit an ``X-Sendfile`` header. This however + requires support of the underlying webserver for ``X-Sendfile``. + + By default it will try to guess the mimetype for you, but you can + also explicitly provide one. For extra security you probably want + to send certain files as attachment (HTML for instance). The mimetype + guessing requires a `filename` or an `attachment_filename` to be + provided. + + ETags will also be attached automatically if a `filename` is provided. You + can turn this off by setting `add_etags=False`. + + If `conditional=True` and `filename` is provided, this method will try to + upgrade the response stream to support range requests. This will allow + the request to be answered with partial content response. + + Please never pass filenames to this function from user sources; + you should use :func:`send_from_directory` instead. + + .. versionadded:: 0.2 + + .. versionadded:: 0.5 + The `add_etags`, `cache_timeout` and `conditional` parameters were + added. The default behavior is now to attach etags. + + .. versionchanged:: 0.7 + mimetype guessing and etag support for file objects was + deprecated because it was unreliable. Pass a filename if you are + able to, otherwise attach an etag yourself. This functionality + will be removed in Flask 1.0 + + .. versionchanged:: 0.9 + cache_timeout pulls its default from application config, when None. + + .. versionchanged:: 0.12 + The filename is no longer automatically inferred from file objects. If + you want to use automatic mimetype and etag support, pass a filepath via + `filename_or_fp` or `attachment_filename`. + + .. versionchanged:: 0.12 + The `attachment_filename` is preferred over `filename` for MIME-type + detection. + + .. versionchanged:: 1.0 + UTF-8 filenames, as specified in `RFC 2231`_, are supported. + + .. _RFC 2231: https://tools.ietf.org/html/rfc2231#section-4 + + .. versionchanged:: 1.0.3 + Filenames are encoded with ASCII instead of Latin-1 for broader + compatibility with WSGI servers. + + .. versionchanged:: 1.1 + Filename may be a :class:`~os.PathLike` object. + + .. versionadded:: 1.1 + Partial content supports :class:`~io.BytesIO`. + + :param filename_or_fp: the filename of the file to send. + This is relative to the :attr:`~Flask.root_path` + if a relative path is specified. + Alternatively a file object might be provided in + which case ``X-Sendfile`` might not work and fall + back to the traditional method. Make sure that the + file pointer is positioned at the start of data to + send before calling :func:`send_file`. + :param mimetype: the mimetype of the file if provided. If a file path is + given, auto detection happens as fallback, otherwise an + error will be raised. + :param as_attachment: set to ``True`` if you want to send this file with + a ``Content-Disposition: attachment`` header. + :param attachment_filename: the filename for the attachment if it + differs from the file's filename. + :param add_etags: set to ``False`` to disable attaching of etags. + :param conditional: set to ``True`` to enable conditional responses. + + :param cache_timeout: the timeout in seconds for the headers. When ``None`` + (default), this value is set by + :meth:`~Flask.get_send_file_max_age` of + :data:`~flask.current_app`. + :param last_modified: set the ``Last-Modified`` header to this value, + a :class:`~datetime.datetime` or timestamp. + If a file was passed, this overrides its mtime. + """ + mtime = None + fsize = None + + if hasattr(filename_or_fp, "__fspath__"): + filename_or_fp = fspath(filename_or_fp) + + if isinstance(filename_or_fp, string_types): + filename = filename_or_fp + if not os.path.isabs(filename): + filename = os.path.join(current_app.root_path, filename) + file = None + if attachment_filename is None: + attachment_filename = os.path.basename(filename) + else: + file = filename_or_fp + filename = None + + if mimetype is None: + if attachment_filename is not None: + mimetype = ( + mimetypes.guess_type(attachment_filename)[0] + or "application/octet-stream" + ) + + if mimetype is None: + raise ValueError( + "Unable to infer MIME-type because no filename is available. " + "Please set either `attachment_filename`, pass a filepath to " + "`filename_or_fp` or set your own MIME-type via `mimetype`." + ) + + headers = Headers() + if as_attachment: + if attachment_filename is None: + raise TypeError("filename unavailable, required for sending as attachment") + + if not isinstance(attachment_filename, text_type): + attachment_filename = attachment_filename.decode("utf-8") + + try: + attachment_filename = attachment_filename.encode("ascii") + except UnicodeEncodeError: + filenames = { + "filename": unicodedata.normalize("NFKD", attachment_filename).encode( + "ascii", "ignore" + ), + "filename*": "UTF-8''%s" % url_quote(attachment_filename, safe=b""), + } + else: + filenames = {"filename": attachment_filename} + + headers.add("Content-Disposition", "attachment", **filenames) + + if current_app.use_x_sendfile and filename: + if file is not None: + file.close() + headers["X-Sendfile"] = filename + fsize = os.path.getsize(filename) + headers["Content-Length"] = fsize + data = None + else: + if file is None: + file = open(filename, "rb") + mtime = os.path.getmtime(filename) + fsize = os.path.getsize(filename) + headers["Content-Length"] = fsize + elif isinstance(file, io.BytesIO): + try: + fsize = file.getbuffer().nbytes + except AttributeError: + # Python 2 doesn't have getbuffer + fsize = len(file.getvalue()) + headers["Content-Length"] = fsize + data = wrap_file(request.environ, file) + + rv = current_app.response_class( + data, mimetype=mimetype, headers=headers, direct_passthrough=True + ) + + if last_modified is not None: + rv.last_modified = last_modified + elif mtime is not None: + rv.last_modified = mtime + + rv.cache_control.public = True + if cache_timeout is None: + cache_timeout = current_app.get_send_file_max_age(filename) + if cache_timeout is not None: + rv.cache_control.max_age = cache_timeout + rv.expires = int(time() + cache_timeout) + + if add_etags and filename is not None: + from warnings import warn + + try: + rv.set_etag( + "%s-%s-%s" + % ( + os.path.getmtime(filename), + os.path.getsize(filename), + adler32( + filename.encode("utf-8") + if isinstance(filename, text_type) + else filename + ) + & 0xFFFFFFFF, + ) + ) + except OSError: + warn( + "Access %s failed, maybe it does not exist, so ignore etags in " + "headers" % filename, + stacklevel=2, + ) + + if conditional: + try: + rv = rv.make_conditional(request, accept_ranges=True, complete_length=fsize) + except RequestedRangeNotSatisfiable: + if file is not None: + file.close() + raise + # make sure we don't send x-sendfile for servers that + # ignore the 304 status code for x-sendfile. + if rv.status_code == 304: + rv.headers.pop("x-sendfile", None) + return rv + + +def safe_join(directory, *pathnames): + """Safely join `directory` and zero or more untrusted `pathnames` + components. + + Example usage:: + + @app.route('/wiki/') + def wiki_page(filename): + filename = safe_join(app.config['WIKI_FOLDER'], filename) + with open(filename, 'rb') as fd: + content = fd.read() # Read and process the file content... + + :param directory: the trusted base directory. + :param pathnames: the untrusted pathnames relative to that directory. + :raises: :class:`~werkzeug.exceptions.NotFound` if one or more passed + paths fall out of its boundaries. + """ + + parts = [directory] + + for filename in pathnames: + if filename != "": + filename = posixpath.normpath(filename) + + if ( + any(sep in filename for sep in _os_alt_seps) + or os.path.isabs(filename) + or filename == ".." + or filename.startswith("../") + ): + raise NotFound() + + parts.append(filename) + + return posixpath.join(*parts) + + +def send_from_directory(directory, filename, **options): + """Send a file from a given directory with :func:`send_file`. This + is a secure way to quickly expose static files from an upload folder + or something similar. + + Example usage:: + + @app.route('/uploads/') + def download_file(filename): + return send_from_directory(app.config['UPLOAD_FOLDER'], + filename, as_attachment=True) + + .. admonition:: Sending files and Performance + + It is strongly recommended to activate either ``X-Sendfile`` support in + your webserver or (if no authentication happens) to tell the webserver + to serve files for the given path on its own without calling into the + web application for improved performance. + + .. versionadded:: 0.5 + + :param directory: the directory where all the files are stored. + :param filename: the filename relative to that directory to + download. + :param options: optional keyword arguments that are directly + forwarded to :func:`send_file`. + """ + filename = fspath(filename) + directory = fspath(directory) + filename = safe_join(directory, filename) + if not os.path.isabs(filename): + filename = os.path.join(current_app.root_path, filename) + try: + if not os.path.isfile(filename): + raise NotFound() + except (TypeError, ValueError): + raise BadRequest() + options.setdefault("conditional", True) + return send_file(filename, **options) + + +def get_root_path(import_name): + """Returns the path to a package or cwd if that cannot be found. This + returns the path of a package or the folder that contains a module. + + Not to be confused with the package path returned by :func:`find_package`. + """ + # Module already imported and has a file attribute. Use that first. + mod = sys.modules.get(import_name) + if mod is not None and hasattr(mod, "__file__"): + return os.path.dirname(os.path.abspath(mod.__file__)) + + # Next attempt: check the loader. + loader = pkgutil.get_loader(import_name) + + # Loader does not exist or we're referring to an unloaded main module + # or a main module without path (interactive sessions), go with the + # current working directory. + if loader is None or import_name == "__main__": + return os.getcwd() + + # For .egg, zipimporter does not have get_filename until Python 2.7. + # Some other loaders might exhibit the same behavior. + if hasattr(loader, "get_filename"): + filepath = loader.get_filename(import_name) + else: + # Fall back to imports. + __import__(import_name) + mod = sys.modules[import_name] + filepath = getattr(mod, "__file__", None) + + # If we don't have a filepath it might be because we are a + # namespace package. In this case we pick the root path from the + # first module that is contained in our package. + if filepath is None: + raise RuntimeError( + "No root path can be found for the provided " + 'module "%s". This can happen because the ' + "module came from an import hook that does " + "not provide file name information or because " + "it's a namespace package. In this case " + "the root path needs to be explicitly " + "provided." % import_name + ) + + # filepath is import_name.py for a module, or __init__.py for a package. + return os.path.dirname(os.path.abspath(filepath)) + + +def _matching_loader_thinks_module_is_package(loader, mod_name): + """Given the loader that loaded a module and the module this function + attempts to figure out if the given module is actually a package. + """ + # If the loader can tell us if something is a package, we can + # directly ask the loader. + if hasattr(loader, "is_package"): + return loader.is_package(mod_name) + # importlib's namespace loaders do not have this functionality but + # all the modules it loads are packages, so we can take advantage of + # this information. + elif ( + loader.__class__.__module__ == "_frozen_importlib" + and loader.__class__.__name__ == "NamespaceLoader" + ): + return True + # Otherwise we need to fail with an error that explains what went + # wrong. + raise AttributeError( + ( + "%s.is_package() method is missing but is required by Flask of " + "PEP 302 import hooks. If you do not use import hooks and " + "you encounter this error please file a bug against Flask." + ) + % loader.__class__.__name__ + ) + + +def _find_package_path(root_mod_name): + """Find the path where the module's root exists in""" + if sys.version_info >= (3, 4): + import importlib.util + + try: + spec = importlib.util.find_spec(root_mod_name) + if spec is None: + raise ValueError("not found") + # ImportError: the machinery told us it does not exist + # ValueError: + # - the module name was invalid + # - the module name is __main__ + # - *we* raised `ValueError` due to `spec` being `None` + except (ImportError, ValueError): + pass # handled below + else: + # namespace package + if spec.origin in {"namespace", None}: + return os.path.dirname(next(iter(spec.submodule_search_locations))) + # a package (with __init__.py) + elif spec.submodule_search_locations: + return os.path.dirname(os.path.dirname(spec.origin)) + # just a normal module + else: + return os.path.dirname(spec.origin) + + # we were unable to find the `package_path` using PEP 451 loaders + loader = pkgutil.get_loader(root_mod_name) + if loader is None or root_mod_name == "__main__": + # import name is not found, or interactive/main module + return os.getcwd() + else: + # For .egg, zipimporter does not have get_filename until Python 2.7. + if hasattr(loader, "get_filename"): + filename = loader.get_filename(root_mod_name) + elif hasattr(loader, "archive"): + # zipimporter's loader.archive points to the .egg or .zip + # archive filename is dropped in call to dirname below. + filename = loader.archive + else: + # At least one loader is missing both get_filename and archive: + # Google App Engine's HardenedModulesHook + # + # Fall back to imports. + __import__(root_mod_name) + filename = sys.modules[root_mod_name].__file__ + package_path = os.path.abspath(os.path.dirname(filename)) + + # In case the root module is a package we need to chop of the + # rightmost part. This needs to go through a helper function + # because of python 3.3 namespace packages. + if _matching_loader_thinks_module_is_package(loader, root_mod_name): + package_path = os.path.dirname(package_path) + + return package_path + + +def find_package(import_name): + """Finds a package and returns the prefix (or None if the package is + not installed) as well as the folder that contains the package or + module as a tuple. The package path returned is the module that would + have to be added to the pythonpath in order to make it possible to + import the module. The prefix is the path below which a UNIX like + folder structure exists (lib, share etc.). + """ + root_mod_name, _, _ = import_name.partition(".") + package_path = _find_package_path(root_mod_name) + site_parent, site_folder = os.path.split(package_path) + py_prefix = os.path.abspath(sys.prefix) + if package_path.startswith(py_prefix): + return py_prefix, package_path + elif site_folder.lower() == "site-packages": + parent, folder = os.path.split(site_parent) + # Windows like installations + if folder.lower() == "lib": + base_dir = parent + # UNIX like installations + elif os.path.basename(parent).lower() == "lib": + base_dir = os.path.dirname(parent) + else: + base_dir = site_parent + return base_dir, package_path + return None, package_path + + +class locked_cached_property(object): + """A decorator that converts a function into a lazy property. The + function wrapped is called the first time to retrieve the result + and then that calculated result is used the next time you access + the value. Works like the one in Werkzeug but has a lock for + thread safety. + """ + + def __init__(self, func, name=None, doc=None): + self.__name__ = name or func.__name__ + self.__module__ = func.__module__ + self.__doc__ = doc or func.__doc__ + self.func = func + self.lock = RLock() + + def __get__(self, obj, type=None): + if obj is None: + return self + with self.lock: + value = obj.__dict__.get(self.__name__, _missing) + if value is _missing: + value = self.func(obj) + obj.__dict__[self.__name__] = value + return value + + +class _PackageBoundObject(object): + #: The name of the package or module that this app belongs to. Do not + #: change this once it is set by the constructor. + import_name = None + + #: Location of the template files to be added to the template lookup. + #: ``None`` if templates should not be added. + template_folder = None + + #: Absolute path to the package on the filesystem. Used to look up + #: resources contained in the package. + root_path = None + + def __init__(self, import_name, template_folder=None, root_path=None): + self.import_name = import_name + self.template_folder = template_folder + + if root_path is None: + root_path = get_root_path(self.import_name) + + self.root_path = root_path + self._static_folder = None + self._static_url_path = None + + # circular import + from .cli import AppGroup + + #: The Click command group for registration of CLI commands + #: on the application and associated blueprints. These commands + #: are accessible via the :command:`flask` command once the + #: application has been discovered and blueprints registered. + self.cli = AppGroup() + + @property + def static_folder(self): + """The absolute path to the configured static folder.""" + if self._static_folder is not None: + return os.path.join(self.root_path, self._static_folder) + + @static_folder.setter + def static_folder(self, value): + if value is not None: + value = value.rstrip("/\\") + self._static_folder = value + + @property + def static_url_path(self): + """The URL prefix that the static route will be accessible from. + + If it was not configured during init, it is derived from + :attr:`static_folder`. + """ + if self._static_url_path is not None: + return self._static_url_path + + if self.static_folder is not None: + basename = os.path.basename(self.static_folder) + return ("/" + basename).rstrip("/") + + @static_url_path.setter + def static_url_path(self, value): + if value is not None: + value = value.rstrip("/") + + self._static_url_path = value + + @property + def has_static_folder(self): + """This is ``True`` if the package bound object's container has a + folder for static files. + + .. versionadded:: 0.5 + """ + return self.static_folder is not None + + @locked_cached_property + def jinja_loader(self): + """The Jinja loader for this package bound object. + + .. versionadded:: 0.5 + """ + if self.template_folder is not None: + return FileSystemLoader(os.path.join(self.root_path, self.template_folder)) + + def get_send_file_max_age(self, filename): + """Provides default cache_timeout for the :func:`send_file` functions. + + By default, this function returns ``SEND_FILE_MAX_AGE_DEFAULT`` from + the configuration of :data:`~flask.current_app`. + + Static file functions such as :func:`send_from_directory` use this + function, and :func:`send_file` calls this function on + :data:`~flask.current_app` when the given cache_timeout is ``None``. If a + cache_timeout is given in :func:`send_file`, that timeout is used; + otherwise, this method is called. + + This allows subclasses to change the behavior when sending files based + on the filename. For example, to set the cache timeout for .js files + to 60 seconds:: + + class MyFlask(flask.Flask): + def get_send_file_max_age(self, name): + if name.lower().endswith('.js'): + return 60 + return flask.Flask.get_send_file_max_age(self, name) + + .. versionadded:: 0.9 + """ + return total_seconds(current_app.send_file_max_age_default) + + def send_static_file(self, filename): + """Function used internally to send static files from the static + folder to the browser. + + .. versionadded:: 0.5 + """ + if not self.has_static_folder: + raise RuntimeError("No static folder for this object") + # Ensure get_send_file_max_age is called in all cases. + # Here, we ensure get_send_file_max_age is called for Blueprints. + cache_timeout = self.get_send_file_max_age(filename) + return send_from_directory( + self.static_folder, filename, cache_timeout=cache_timeout + ) + + def open_resource(self, resource, mode="rb"): + """Opens a resource from the application's resource folder. To see + how this works, consider the following folder structure:: + + /myapplication.py + /schema.sql + /static + /style.css + /templates + /layout.html + /index.html + + If you want to open the :file:`schema.sql` file you would do the + following:: + + with app.open_resource('schema.sql') as f: + contents = f.read() + do_something_with(contents) + + :param resource: the name of the resource. To access resources within + subfolders use forward slashes as separator. + :param mode: Open file in this mode. Only reading is supported, + valid values are "r" (or "rt") and "rb". + """ + if mode not in {"r", "rt", "rb"}: + raise ValueError("Resources can only be opened for reading") + + return open(os.path.join(self.root_path, resource), mode) + + +def total_seconds(td): + """Returns the total seconds from a timedelta object. + + :param timedelta td: the timedelta to be converted in seconds + + :returns: number of seconds + :rtype: int + """ + return td.days * 60 * 60 * 24 + td.seconds + + +def is_ip(value): + """Determine if the given string is an IP address. + + Python 2 on Windows doesn't provide ``inet_pton``, so this only + checks IPv4 addresses in that environment. + + :param value: value to check + :type value: str + + :return: True if string is an IP address + :rtype: bool + """ + if PY2 and os.name == "nt": + try: + socket.inet_aton(value) + return True + except socket.error: + return False + + for family in (socket.AF_INET, socket.AF_INET6): + try: + socket.inet_pton(family, value) + except socket.error: + pass + else: + return True + + return False diff --git a/matteo_env/Lib/site-packages/flask/json/__init__.py b/matteo_env/Lib/site-packages/flask/json/__init__.py new file mode 100644 index 0000000..a141068 --- /dev/null +++ b/matteo_env/Lib/site-packages/flask/json/__init__.py @@ -0,0 +1,376 @@ +# -*- coding: utf-8 -*- +""" +flask.json +~~~~~~~~~~ + +:copyright: 2010 Pallets +:license: BSD-3-Clause +""" +import codecs +import io +import uuid +from datetime import date +from datetime import datetime + +from itsdangerous import json as _json +from jinja2 import Markup +from werkzeug.http import http_date + +from .._compat import PY2 +from .._compat import text_type +from ..globals import current_app +from ..globals import request + +try: + import dataclasses +except ImportError: + dataclasses = None + +# Figure out if simplejson escapes slashes. This behavior was changed +# from one version to another without reason. +_slash_escape = "\\/" not in _json.dumps("/") + + +__all__ = [ + "dump", + "dumps", + "load", + "loads", + "htmlsafe_dump", + "htmlsafe_dumps", + "JSONDecoder", + "JSONEncoder", + "jsonify", +] + + +def _wrap_reader_for_text(fp, encoding): + if isinstance(fp.read(0), bytes): + fp = io.TextIOWrapper(io.BufferedReader(fp), encoding) + return fp + + +def _wrap_writer_for_text(fp, encoding): + try: + fp.write("") + except TypeError: + fp = io.TextIOWrapper(fp, encoding) + return fp + + +class JSONEncoder(_json.JSONEncoder): + """The default Flask JSON encoder. This one extends the default + encoder by also supporting ``datetime``, ``UUID``, ``dataclasses``, + and ``Markup`` objects. + + ``datetime`` objects are serialized as RFC 822 datetime strings. + This is the same as the HTTP date format. + + In order to support more data types, override the :meth:`default` + method. + """ + + def default(self, o): + """Implement this method in a subclass such that it returns a + serializable object for ``o``, or calls the base implementation (to + raise a :exc:`TypeError`). + + For example, to support arbitrary iterators, you could implement + default like this:: + + def default(self, o): + try: + iterable = iter(o) + except TypeError: + pass + else: + return list(iterable) + return JSONEncoder.default(self, o) + """ + if isinstance(o, datetime): + return http_date(o.utctimetuple()) + if isinstance(o, date): + return http_date(o.timetuple()) + if isinstance(o, uuid.UUID): + return str(o) + if dataclasses and dataclasses.is_dataclass(o): + return dataclasses.asdict(o) + if hasattr(o, "__html__"): + return text_type(o.__html__()) + return _json.JSONEncoder.default(self, o) + + +class JSONDecoder(_json.JSONDecoder): + """The default JSON decoder. This one does not change the behavior from + the default simplejson decoder. Consult the :mod:`json` documentation + for more information. This decoder is not only used for the load + functions of this module but also :attr:`~flask.Request`. + """ + + +def _dump_arg_defaults(kwargs, app=None): + """Inject default arguments for dump functions.""" + if app is None: + app = current_app + + if app: + bp = app.blueprints.get(request.blueprint) if request else None + kwargs.setdefault( + "cls", bp.json_encoder if bp and bp.json_encoder else app.json_encoder + ) + + if not app.config["JSON_AS_ASCII"]: + kwargs.setdefault("ensure_ascii", False) + + kwargs.setdefault("sort_keys", app.config["JSON_SORT_KEYS"]) + else: + kwargs.setdefault("sort_keys", True) + kwargs.setdefault("cls", JSONEncoder) + + +def _load_arg_defaults(kwargs, app=None): + """Inject default arguments for load functions.""" + if app is None: + app = current_app + + if app: + bp = app.blueprints.get(request.blueprint) if request else None + kwargs.setdefault( + "cls", bp.json_decoder if bp and bp.json_decoder else app.json_decoder + ) + else: + kwargs.setdefault("cls", JSONDecoder) + + +def detect_encoding(data): + """Detect which UTF codec was used to encode the given bytes. + + The latest JSON standard (:rfc:`8259`) suggests that only UTF-8 is + accepted. Older documents allowed 8, 16, or 32. 16 and 32 can be big + or little endian. Some editors or libraries may prepend a BOM. + + :param data: Bytes in unknown UTF encoding. + :return: UTF encoding name + """ + head = data[:4] + + if head[:3] == codecs.BOM_UTF8: + return "utf-8-sig" + + if b"\x00" not in head: + return "utf-8" + + if head in (codecs.BOM_UTF32_BE, codecs.BOM_UTF32_LE): + return "utf-32" + + if head[:2] in (codecs.BOM_UTF16_BE, codecs.BOM_UTF16_LE): + return "utf-16" + + if len(head) == 4: + if head[:3] == b"\x00\x00\x00": + return "utf-32-be" + + if head[::2] == b"\x00\x00": + return "utf-16-be" + + if head[1:] == b"\x00\x00\x00": + return "utf-32-le" + + if head[1::2] == b"\x00\x00": + return "utf-16-le" + + if len(head) == 2: + return "utf-16-be" if head.startswith(b"\x00") else "utf-16-le" + + return "utf-8" + + +def dumps(obj, app=None, **kwargs): + """Serialize ``obj`` to a JSON-formatted string. If there is an + app context pushed, use the current app's configured encoder + (:attr:`~flask.Flask.json_encoder`), or fall back to the default + :class:`JSONEncoder`. + + Takes the same arguments as the built-in :func:`json.dumps`, and + does some extra configuration based on the application. If the + simplejson package is installed, it is preferred. + + :param obj: Object to serialize to JSON. + :param app: App instance to use to configure the JSON encoder. + Uses ``current_app`` if not given, and falls back to the default + encoder when not in an app context. + :param kwargs: Extra arguments passed to :func:`json.dumps`. + + .. versionchanged:: 1.0.3 + + ``app`` can be passed directly, rather than requiring an app + context for configuration. + """ + _dump_arg_defaults(kwargs, app=app) + encoding = kwargs.pop("encoding", None) + rv = _json.dumps(obj, **kwargs) + if encoding is not None and isinstance(rv, text_type): + rv = rv.encode(encoding) + return rv + + +def dump(obj, fp, app=None, **kwargs): + """Like :func:`dumps` but writes into a file object.""" + _dump_arg_defaults(kwargs, app=app) + encoding = kwargs.pop("encoding", None) + if encoding is not None: + fp = _wrap_writer_for_text(fp, encoding) + _json.dump(obj, fp, **kwargs) + + +def loads(s, app=None, **kwargs): + """Deserialize an object from a JSON-formatted string ``s``. If + there is an app context pushed, use the current app's configured + decoder (:attr:`~flask.Flask.json_decoder`), or fall back to the + default :class:`JSONDecoder`. + + Takes the same arguments as the built-in :func:`json.loads`, and + does some extra configuration based on the application. If the + simplejson package is installed, it is preferred. + + :param s: JSON string to deserialize. + :param app: App instance to use to configure the JSON decoder. + Uses ``current_app`` if not given, and falls back to the default + encoder when not in an app context. + :param kwargs: Extra arguments passed to :func:`json.dumps`. + + .. versionchanged:: 1.0.3 + + ``app`` can be passed directly, rather than requiring an app + context for configuration. + """ + _load_arg_defaults(kwargs, app=app) + if isinstance(s, bytes): + encoding = kwargs.pop("encoding", None) + if encoding is None: + encoding = detect_encoding(s) + s = s.decode(encoding) + return _json.loads(s, **kwargs) + + +def load(fp, app=None, **kwargs): + """Like :func:`loads` but reads from a file object.""" + _load_arg_defaults(kwargs, app=app) + if not PY2: + fp = _wrap_reader_for_text(fp, kwargs.pop("encoding", None) or "utf-8") + return _json.load(fp, **kwargs) + + +def htmlsafe_dumps(obj, **kwargs): + """Works exactly like :func:`dumps` but is safe for use in `` + + + + ⚾ The Blaseball Simsim + + + +
+
+
+

game page ahoy

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+
+
+
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+
+ + \ No newline at end of file diff --git a/the-prestige.pyproj b/the-prestige.pyproj index d690614..5f782b1 100644 --- a/the-prestige.pyproj +++ b/the-prestige.pyproj @@ -57,6 +57,14 @@ + + + + + + + +