553 lines
17 KiB
Python
553 lines
17 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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The MIT License (MIT)
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Copyright (c) 2015-2020 Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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import array
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import asyncio
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import collections.abc
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import unicodedata
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from base64 import b64encode
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from bisect import bisect_left
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import datetime
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from email.utils import parsedate_to_datetime
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import functools
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from inspect import isawaitable as _isawaitable
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from operator import attrgetter
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import json
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import re
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import warnings
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from .errors import InvalidArgument
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from .object import Object
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DISCORD_EPOCH = 1420070400000
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MAX_ASYNCIO_SECONDS = 3456000
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class cached_property:
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def __init__(self, function):
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self.function = function
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self.__doc__ = getattr(function, '__doc__')
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def __get__(self, instance, owner):
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if instance is None:
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return self
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value = self.function(instance)
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setattr(instance, self.function.__name__, value)
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return value
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class CachedSlotProperty:
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def __init__(self, name, function):
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self.name = name
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self.function = function
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self.__doc__ = getattr(function, '__doc__')
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def __get__(self, instance, owner):
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if instance is None:
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return self
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try:
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return getattr(instance, self.name)
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except AttributeError:
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value = self.function(instance)
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setattr(instance, self.name, value)
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return value
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def cached_slot_property(name):
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def decorator(func):
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return CachedSlotProperty(name, func)
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return decorator
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class SequenceProxy(collections.abc.Sequence):
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"""Read-only proxy of a Sequence."""
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def __init__(self, proxied):
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self.__proxied = proxied
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def __getitem__(self, idx):
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return self.__proxied[idx]
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def __len__(self):
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return len(self.__proxied)
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def __contains__(self, item):
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return item in self.__proxied
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def __iter__(self):
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return iter(self.__proxied)
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def __reversed__(self):
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return reversed(self.__proxied)
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def index(self, value, *args, **kwargs):
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return self.__proxied.index(value, *args, **kwargs)
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def count(self, value):
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return self.__proxied.count(value)
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def parse_time(timestamp):
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if timestamp:
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return datetime.datetime(*map(int, re.split(r'[^\d]', timestamp.replace('+00:00', ''))))
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return None
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def deprecated(instead=None):
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def actual_decorator(func):
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@functools.wraps(func)
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def decorated(*args, **kwargs):
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warnings.simplefilter('always', DeprecationWarning) # turn off filter
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if instead:
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fmt = "{0.__name__} is deprecated, use {1} instead."
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else:
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fmt = '{0.__name__} is deprecated.'
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warnings.warn(fmt.format(func, instead), stacklevel=3, category=DeprecationWarning)
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warnings.simplefilter('default', DeprecationWarning) # reset filter
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return func(*args, **kwargs)
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return decorated
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return actual_decorator
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def oauth_url(client_id, permissions=None, guild=None, redirect_uri=None):
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"""A helper function that returns the OAuth2 URL for inviting the bot
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into guilds.
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Parameters
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-----------
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client_id: :class:`str`
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The client ID for your bot.
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permissions: :class:`~discord.Permissions`
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The permissions you're requesting. If not given then you won't be requesting any
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permissions.
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guild: :class:`~discord.Guild`
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The guild to pre-select in the authorization screen, if available.
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redirect_uri: :class:`str`
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An optional valid redirect URI.
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Returns
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--------
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:class:`str`
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The OAuth2 URL for inviting the bot into guilds.
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"""
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url = 'https://discord.com/oauth2/authorize?client_id={}&scope=bot'.format(client_id)
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if permissions is not None:
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url = url + '&permissions=' + str(permissions.value)
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if guild is not None:
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url = url + "&guild_id=" + str(guild.id)
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if redirect_uri is not None:
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from urllib.parse import urlencode
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url = url + "&response_type=code&" + urlencode({'redirect_uri': redirect_uri})
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return url
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def snowflake_time(id):
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"""
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Parameters
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-----------
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id: :class:`int`
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The snowflake ID.
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Returns
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--------
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:class:`datetime.datetime`
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The creation date in UTC of a Discord snowflake ID."""
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return datetime.datetime.utcfromtimestamp(((id >> 22) + DISCORD_EPOCH) / 1000)
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def time_snowflake(datetime_obj, high=False):
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"""Returns a numeric snowflake pretending to be created at the given date.
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When using as the lower end of a range, use ``time_snowflake(high=False) - 1`` to be inclusive, ``high=True`` to be exclusive
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When using as the higher end of a range, use ``time_snowflake(high=True)`` + 1 to be inclusive, ``high=False`` to be exclusive
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Parameters
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-----------
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datetime_obj: :class:`datetime.datetime`
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A timezone-naive datetime object representing UTC time.
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high: :class:`bool`
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Whether or not to set the lower 22 bit to high or low.
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"""
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unix_seconds = (datetime_obj - type(datetime_obj)(1970, 1, 1)).total_seconds()
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discord_millis = int(unix_seconds * 1000 - DISCORD_EPOCH)
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return (discord_millis << 22) + (2**22-1 if high else 0)
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def find(predicate, seq):
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"""A helper to return the first element found in the sequence
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that meets the predicate. For example: ::
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member = discord.utils.find(lambda m: m.name == 'Mighty', channel.guild.members)
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would find the first :class:`~discord.Member` whose name is 'Mighty' and return it.
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If an entry is not found, then ``None`` is returned.
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This is different from :func:`py:filter` due to the fact it stops the moment it finds
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a valid entry.
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Parameters
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-----------
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predicate
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A function that returns a boolean-like result.
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seq: iterable
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The iterable to search through.
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"""
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for element in seq:
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if predicate(element):
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return element
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return None
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def get(iterable, **attrs):
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r"""A helper that returns the first element in the iterable that meets
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all the traits passed in ``attrs``. This is an alternative for
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:func:`~discord.utils.find`.
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When multiple attributes are specified, they are checked using
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logical AND, not logical OR. Meaning they have to meet every
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attribute passed in and not one of them.
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To have a nested attribute search (i.e. search by ``x.y``) then
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pass in ``x__y`` as the keyword argument.
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If nothing is found that matches the attributes passed, then
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``None`` is returned.
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Examples
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---------
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Basic usage:
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.. code-block:: python3
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member = discord.utils.get(message.guild.members, name='Foo')
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Multiple attribute matching:
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.. code-block:: python3
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channel = discord.utils.get(guild.voice_channels, name='Foo', bitrate=64000)
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Nested attribute matching:
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.. code-block:: python3
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channel = discord.utils.get(client.get_all_channels(), guild__name='Cool', name='general')
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Parameters
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-----------
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iterable
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An iterable to search through.
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\*\*attrs
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Keyword arguments that denote attributes to search with.
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"""
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# global -> local
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_all = all
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attrget = attrgetter
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# Special case the single element call
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if len(attrs) == 1:
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k, v = attrs.popitem()
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pred = attrget(k.replace('__', '.'))
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for elem in iterable:
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if pred(elem) == v:
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return elem
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return None
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converted = [
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(attrget(attr.replace('__', '.')), value)
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for attr, value in attrs.items()
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]
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for elem in iterable:
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if _all(pred(elem) == value for pred, value in converted):
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return elem
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return None
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def _unique(iterable):
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seen = set()
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adder = seen.add
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return [x for x in iterable if not (x in seen or adder(x))]
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def _get_as_snowflake(data, key):
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try:
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value = data[key]
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except KeyError:
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return None
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else:
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return value and int(value)
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def _get_mime_type_for_image(data):
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if data.startswith(b'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A'):
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return 'image/png'
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elif data[0:3] == b'\xff\xd8\xff' or data[6:10] in (b'JFIF', b'Exif'):
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return 'image/jpeg'
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elif data.startswith((b'\x47\x49\x46\x38\x37\x61', b'\x47\x49\x46\x38\x39\x61')):
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return 'image/gif'
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elif data.startswith(b'RIFF') and data[8:12] == b'WEBP':
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return 'image/webp'
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else:
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raise InvalidArgument('Unsupported image type given')
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def _bytes_to_base64_data(data):
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fmt = 'data:{mime};base64,{data}'
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mime = _get_mime_type_for_image(data)
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b64 = b64encode(data).decode('ascii')
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return fmt.format(mime=mime, data=b64)
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def to_json(obj):
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return json.dumps(obj, separators=(',', ':'), ensure_ascii=True)
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def _parse_ratelimit_header(request, *, use_clock=False):
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reset_after = request.headers.get('X-Ratelimit-Reset-After')
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if use_clock or not reset_after:
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utc = datetime.timezone.utc
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now = datetime.datetime.now(utc)
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reset = datetime.datetime.fromtimestamp(float(request.headers['X-Ratelimit-Reset']), utc)
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return (reset - now).total_seconds()
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else:
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return float(reset_after)
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async def maybe_coroutine(f, *args, **kwargs):
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value = f(*args, **kwargs)
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if _isawaitable(value):
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return await value
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else:
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return value
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async def async_all(gen, *, check=_isawaitable):
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for elem in gen:
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if check(elem):
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elem = await elem
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if not elem:
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return False
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return True
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async def sane_wait_for(futures, *, timeout):
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ensured = [
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asyncio.ensure_future(fut) for fut in futures
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]
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done, pending = await asyncio.wait(ensured, timeout=timeout, return_when=asyncio.ALL_COMPLETED)
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if len(pending) != 0:
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raise asyncio.TimeoutError()
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return done
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async def sleep_until(when, result=None):
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"""|coro|
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Sleep until a specified time.
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If the time supplied is in the past this function will yield instantly.
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.. versionadded:: 1.3
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Parameters
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-----------
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when: :class:`datetime.datetime`
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The timestamp in which to sleep until. If the datetime is naive then
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it is assumed to be in UTC.
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result: Any
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If provided is returned to the caller when the coroutine completes.
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"""
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if when.tzinfo is None:
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when = when.replace(tzinfo=datetime.timezone.utc)
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now = datetime.datetime.now(datetime.timezone.utc)
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delta = (when - now).total_seconds()
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while delta > MAX_ASYNCIO_SECONDS:
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await asyncio.sleep(MAX_ASYNCIO_SECONDS)
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delta -= MAX_ASYNCIO_SECONDS
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return await asyncio.sleep(max(delta, 0), result)
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def valid_icon_size(size):
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"""Icons must be power of 2 within [16, 4096]."""
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return not size & (size - 1) and size in range(16, 4097)
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class SnowflakeList(array.array):
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||
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|
"""Internal data storage class to efficiently store a list of snowflakes.
|
||
|
|
|
||
|
|
This should have the following characteristics:
|
||
|
|
|
||
|
|
- Low memory usage
|
||
|
|
- O(n) iteration (obviously)
|
||
|
|
- O(n log n) initial creation if data is unsorted
|
||
|
|
- O(log n) search and indexing
|
||
|
|
- O(n) insertion
|
||
|
|
"""
|
||
|
|
|
||
|
|
__slots__ = ()
|
||
|
|
|
||
|
|
def __new__(cls, data, *, is_sorted=False):
|
||
|
|
return array.array.__new__(cls, 'Q', data if is_sorted else sorted(data))
|
||
|
|
|
||
|
|
def add(self, element):
|
||
|
|
i = bisect_left(self, element)
|
||
|
|
self.insert(i, element)
|
||
|
|
|
||
|
|
def get(self, element):
|
||
|
|
i = bisect_left(self, element)
|
||
|
|
return self[i] if i != len(self) and self[i] == element else None
|
||
|
|
|
||
|
|
def has(self, element):
|
||
|
|
i = bisect_left(self, element)
|
||
|
|
return i != len(self) and self[i] == element
|
||
|
|
|
||
|
|
_IS_ASCII = re.compile(r'^[\x00-\x7f]+$')
|
||
|
|
|
||
|
|
def _string_width(string, *, _IS_ASCII=_IS_ASCII):
|
||
|
|
"""Returns string's width."""
|
||
|
|
match = _IS_ASCII.match(string)
|
||
|
|
if match:
|
||
|
|
return match.endpos
|
||
|
|
|
||
|
|
UNICODE_WIDE_CHAR_TYPE = 'WFA'
|
||
|
|
width = 0
|
||
|
|
func = unicodedata.east_asian_width
|
||
|
|
for char in string:
|
||
|
|
width += 2 if func(char) in UNICODE_WIDE_CHAR_TYPE else 1
|
||
|
|
return width
|
||
|
|
|
||
|
|
def resolve_invite(invite):
|
||
|
|
"""
|
||
|
|
Resolves an invite from a :class:`~discord.Invite`, URL or code.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
-----------
|
||
|
|
invite: Union[:class:`~discord.Invite`, :class:`str`]
|
||
|
|
The invite.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
--------
|
||
|
|
:class:`str`
|
||
|
|
The invite code.
|
||
|
|
"""
|
||
|
|
from .invite import Invite # circular import
|
||
|
|
if isinstance(invite, Invite):
|
||
|
|
return invite.code
|
||
|
|
else:
|
||
|
|
rx = r'(?:https?\:\/\/)?discord(?:\.gg|(?:app)?\.com\/invite)\/(.+)'
|
||
|
|
m = re.match(rx, invite)
|
||
|
|
if m:
|
||
|
|
return m.group(1)
|
||
|
|
return invite
|
||
|
|
|
||
|
|
def resolve_template(code):
|
||
|
|
"""
|
||
|
|
Resolves a template code from a :class:`~discord.Template`, URL or code.
|
||
|
|
|
||
|
|
.. versionadded:: 1.4
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
-----------
|
||
|
|
code: Union[:class:`~discord.Template`, :class:`str`]
|
||
|
|
The code.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
--------
|
||
|
|
:class:`str`
|
||
|
|
The template code.
|
||
|
|
"""
|
||
|
|
from .template import Template # circular import
|
||
|
|
if isinstance(code, Template):
|
||
|
|
return code.code
|
||
|
|
else:
|
||
|
|
rx = r'(?:https?\:\/\/)?discord(?:\.new|(?:app)?\.com\/template)\/(.+)'
|
||
|
|
m = re.match(rx, code)
|
||
|
|
if m:
|
||
|
|
return m.group(1)
|
||
|
|
return code
|
||
|
|
|
||
|
|
_MARKDOWN_ESCAPE_SUBREGEX = '|'.join(r'\{0}(?=([\s\S]*((?<!\{0})\{0})))'.format(c)
|
||
|
|
for c in ('*', '`', '_', '~', '|'))
|
||
|
|
|
||
|
|
_MARKDOWN_ESCAPE_COMMON = r'^>(?:>>)?\s|\[.+\]\(.+\)'
|
||
|
|
|
||
|
|
_MARKDOWN_ESCAPE_REGEX = re.compile(r'(?P<markdown>%s|%s)' % (_MARKDOWN_ESCAPE_SUBREGEX, _MARKDOWN_ESCAPE_COMMON), re.MULTILINE)
|
||
|
|
|
||
|
|
def escape_markdown(text, *, as_needed=False, ignore_links=True):
|
||
|
|
r"""A helper function that escapes Discord's markdown.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
-----------
|
||
|
|
text: :class:`str`
|
||
|
|
The text to escape markdown from.
|
||
|
|
as_needed: :class:`bool`
|
||
|
|
Whether to escape the markdown characters as needed. This
|
||
|
|
means that it does not escape extraneous characters if it's
|
||
|
|
not necessary, e.g. ``**hello**`` is escaped into ``\*\*hello**``
|
||
|
|
instead of ``\*\*hello\*\*``. Note however that this can open
|
||
|
|
you up to some clever syntax abuse. Defaults to ``False``.
|
||
|
|
ignore_links: :class:`bool`
|
||
|
|
Whether to leave links alone when escaping markdown. For example,
|
||
|
|
if a URL in the text contains characters such as ``_`` then it will
|
||
|
|
be left alone. This option is not supported with ``as_needed``.
|
||
|
|
Defaults to ``True``.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
--------
|
||
|
|
:class:`str`
|
||
|
|
The text with the markdown special characters escaped with a slash.
|
||
|
|
"""
|
||
|
|
|
||
|
|
if not as_needed:
|
||
|
|
url_regex = r'(?P<url><[^: >]+:\/[^ >]+>|(?:https?|steam):\/\/[^\s<]+[^<.,:;\"\'\]\s])'
|
||
|
|
def replacement(match):
|
||
|
|
groupdict = match.groupdict()
|
||
|
|
is_url = groupdict.get('url')
|
||
|
|
if is_url:
|
||
|
|
return is_url
|
||
|
|
return '\\' + groupdict['markdown']
|
||
|
|
|
||
|
|
regex = r'(?P<markdown>[_\\~|\*`]|%s)' % _MARKDOWN_ESCAPE_COMMON
|
||
|
|
if ignore_links:
|
||
|
|
regex = '(?:%s|%s)' % (url_regex, regex)
|
||
|
|
return re.sub(regex, replacement, text, 0, re.MULTILINE)
|
||
|
|
else:
|
||
|
|
text = re.sub(r'\\', r'\\\\', text)
|
||
|
|
return _MARKDOWN_ESCAPE_REGEX.sub(r'\\\1', text)
|
||
|
|
|
||
|
|
def escape_mentions(text):
|
||
|
|
"""A helper function that escapes everyone, here, role, and user mentions.
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
|
||
|
|
This does not include channel mentions.
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
|
||
|
|
For more granular control over what mentions should be escaped
|
||
|
|
within messages, refer to the :class:`~discord.AllowedMentions`
|
||
|
|
class.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
-----------
|
||
|
|
text: :class:`str`
|
||
|
|
The text to escape mentions from.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
--------
|
||
|
|
:class:`str`
|
||
|
|
The text with the mentions removed.
|
||
|
|
"""
|
||
|
|
return re.sub(r'@(everyone|here|[!&]?[0-9]{17,21})', '@\u200b\\1', text)
|