Application and entities that are used to describe emojis on Discord.
# -*- coding: utf-8 -*-
# cython: language_level=3
# Copyright (c) 2020 Nekokatt
# Copyright (c) 2021-present davfsa
#
# 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.
"""Application and entities that are used to describe emojis on Discord."""
from __future__ import annotations
__all__: typing.Sequence[str] = ("Emoji", "UnicodeEmoji", "CustomEmoji", "KnownCustomEmoji")
import abc
import re
import typing
import attr
from hikari import files
from hikari import snowflakes
from hikari import urls
from hikari.internal import attr_extensions
from hikari.internal import routes
# import unicodedata
if typing.TYPE_CHECKING:
from hikari import traits
from hikari import users
_TWEMOJI_PNG_BASE_URL: typing.Final[str] = "https://raw.githubusercontent.com/twitter/twemoji/master/assets/72x72/"
_CUSTOM_EMOJI_REGEX: typing.Final[typing.Pattern[str]] = re.compile(r"<(?P<flags>[^:]*):(?P<name>[^:]*):(?P<id>\d+)>")
class Emoji(files.WebResource, abc.ABC):
"""Base class for all emojis.
Any emoji implementation supports being used as a
`hikari.files.Resource` when uploading an attachment to the API.
This is achieved in the same way as using a
`hikari.files.WebResource` would achieve this.
"""
__slots__: typing.Sequence[str] = ()
@property
@abc.abstractmethod
def name(self) -> str:
"""Return the generic name/representation for this emoji."""
@property
@abc.abstractmethod
def url(self) -> str:
"""URL of the emoji image to display in clients."""
@property
@abc.abstractmethod
def url_name(self) -> str:
"""Name of the part of the emoji to use in requests."""
@property
@abc.abstractmethod
def mention(self) -> str:
"""Mention string to use to mention the emoji with."""
@classmethod
def parse(cls, string: str, /) -> Emoji:
"""Parse a given string into an emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
Emoji
The parsed emoji object. This will be a `CustomEmoji` if a custom
emoji mention, or a `UnicodeEmoji` otherwise.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if string.startswith("<") and string.endswith(">"):
return CustomEmoji.parse(string)
return UnicodeEmoji.parse(string)
class UnicodeEmoji(str, Emoji):
"""Represents a unicode emoji.
!!! warning
A word of warning if you try to upload this emoji as a file attachment.
While this emoji type can be used to upload the Twemoji representations
of this emoji as a PNG, this is NOT foolproof. The mapping between
Discord's implementation and official Twemoji bindings is very flaky.
Responsible implementations relying on this behaviour will be
implemented to expect this behaviour in the form of
`hikari.errors.NotFoundError` exceptions being raised when a mismatch may
occur. It is also likely that this will change in the future without
notice, so you will likely be relying on flaky behaviour.
If this is proven to be too unstable, this functionality will be
removed in a future release after a deprecation period.
"""
__slots__: typing.Sequence[str] = ()
@property
def name(self) -> str:
"""Return the code points which form the emoji."""
return self
@property
@typing.final
def url_name(self) -> str:
return self
@property
def mention(self) -> str:
return self
@property
@typing.final
def codepoints(self) -> typing.Sequence[int]:
"""Integer codepoints that make up this emoji, as UTF-8."""
return [ord(c) for c in self]
@property
def filename(self) -> str:
"""Filename to use if re-uploading this emoji's PNG."""
codepoints = self.codepoints
# It looks like the rule is to delete character #2 if the value
# of this is 0xfe0f and the character is up to 4 characters long.
# Other than that, the mapping is 1-to-1. There's a couple of outliers
# to this 0xfe0f rule and they seem to follow a pattern where the
# codepoint after 0xfe0f is 0x200D but this might be a coincidence and
# if Discord start breaking this regularly I might need to ask for a
# more permanent solution. This is provisionally provided. If we find it
# breaks in other ways, I will just revoke this functionality in a
# future update.
if codepoints[1:2] == [0xFE0F] and len(codepoints) <= 4 and codepoints[2:3] != [0x200D]:
codepoints = [codepoints[0], *codepoints[2:]]
return "-".join(hex(c)[2:] for c in codepoints) + ".png"
@property
def url(self) -> str:
"""Get the URL of the PNG rendition of this emoji.
This will use the official Twitter "twemoji" repository to fetch
this information, as Discord only stores this in a hashed format
that uses SVG files, which is not usually of any use.
Since this uses "twemoji" directly, the emojis may not directly
match what is on Discord if Discord have failed to keep their emoji
packs up-to-date with this repository.
Example
-------
https://github.com/twitter/twemoji/raw/master/assets/72x72/1f004.png
"""
return _TWEMOJI_PNG_BASE_URL + self.filename
# @property
# @typing.final
# def unicode_names(self) -> typing.Sequence[str]:
# """Get the unicode name of the emoji as a sequence.
#
# This returns the name of each codepoint. If only one codepoint exists,
# then this will only have one item in the resulting sequence.
# """
# return [unicodedata.name(c) for c in self]
@property
@typing.final
def unicode_escape(self) -> str:
"""Get the unicode escape string for this emoji."""
return bytes(self, "unicode_escape").decode("utf-8")
@classmethod
@typing.final
def parse_codepoints(cls, codepoint: int, *codepoints: int) -> UnicodeEmoji:
"""Create a unicode emoji from one or more UTF-32 codepoints."""
return cls("".join(map(chr, (codepoint, *codepoints))))
@classmethod
@typing.final
def parse_unicode_escape(cls, escape: str) -> UnicodeEmoji:
"""Create a unicode emoji from a unicode escape string."""
return cls(escape.encode("utf-8"), "unicode_escape")
@classmethod
@typing.final
def parse(cls, string: str, /) -> UnicodeEmoji:
"""Parse a given string into a unicode emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
UnicodeEmoji
The parsed UnicodeEmoji object.
"""
# TODO: Re-add validity
# Ensure validity.
# for i, codepoint in enumerate(string, start=1):
# unicodedata.name(codepoint)
return cls(string)
@attr_extensions.with_copy
@attr.define(hash=True, kw_only=True, weakref_slot=False)
class CustomEmoji(snowflakes.Unique, Emoji):
"""Represents a custom emoji.
This is a custom emoji that is from a guild you might not be part of.
All CustomEmoji objects and their derivatives act as valid
`hikari.files.Resource` objects. This means you can use them as a
file when sending a message.
>>> emojis = await bot.rest.fetch_guild_emojis(12345)
>>> picks = random.choices(emojis, 5)
>>> await event.respond(files=picks)
!!! warning
Discord will not provide information on whether these emojis are
animated or not when a reaction is removed and an event is fired. This
is problematic if you need to try and determine the emoji that was
removed. The side effect of this means that mentions for animated emojis
will not be correct.
This will not be changed as stated here:
https://github.com/discord/discord-api-docs/issues/1614#issuecomment-628548913
"""
id: snowflakes.Snowflake = attr.field(hash=True, repr=True)
"""The ID of this entity."""
name: str = attr.field(eq=False, hash=False, repr=True)
"""The name of the emoji."""
is_animated: bool = attr.field(eq=False, hash=False, repr=True)
"""Whether the emoji is animated."""
def __str__(self) -> str:
return self.mention
@property
def filename(self) -> str:
return str(self.id) + (".gif" if self.is_animated else ".png")
@property
@typing.final
def url_name(self) -> str:
return f"{self.name}:{self.id}"
@property
@typing.final
def mention(self) -> str:
return f"<{'a' if self.is_animated else ''}:{self.url_name}>"
@property
@typing.final
def url(self) -> str:
ext = "gif" if self.is_animated else "png"
return routes.CDN_CUSTOM_EMOJI.compile(urls.CDN_URL, emoji_id=self.id, file_format=ext)
@classmethod
def parse(cls, string: str, /) -> CustomEmoji:
"""Parse a given emoji mention string into a custom emoji object.
Parameters
----------
string : builtins.str
The emoji mention to parse.
Returns
-------
CustomEmoji
The parsed emoji object.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if emoji_match := _CUSTOM_EMOJI_REGEX.match(string):
return CustomEmoji(
id=snowflakes.Snowflake(emoji_match.group("id")),
name=emoji_match.group("name"),
is_animated=emoji_match.group("flags").lower() == "a",
)
raise ValueError("Expected an emoji mention")
@attr.define(hash=True, kw_only=True, weakref_slot=False)
class KnownCustomEmoji(CustomEmoji):
"""Represents an emoji that is known from a guild the bot is in.
This is a specialization of `CustomEmoji` that is from a guild that you
_are_ part of. As a result, it contains a lot more information with it.
"""
app: traits.RESTAware = attr.field(
repr=False, eq=False, hash=False, metadata={attr_extensions.SKIP_DEEP_COPY: True}
)
"""The client application that models may use for procedures."""
guild_id: snowflakes.Snowflake = attr.field(eq=False, hash=False, repr=False)
"""The ID of the guild this emoji belongs to."""
role_ids: typing.Sequence[snowflakes.Snowflake] = attr.field(eq=False, hash=False, repr=False)
"""The IDs of the roles that are whitelisted to use this emoji.
If this is empty then any user can use this emoji regardless of their roles.
"""
user: typing.Optional[users.User] = attr.field(eq=False, hash=False, repr=False)
"""The user that created the emoji.
!!! note
This will be `builtins.None` if you are missing the `MANAGE_EMOJIS_AND_STICKERS`
permission in the server the emoji is from.
"""
is_colons_required: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether this emoji must be wrapped in colons."""
is_managed: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether the emoji is managed by an integration."""
is_available: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether this emoji can currently be used.
May be `builtins.False` due to a loss of Sever Boosts on the emoji's guild.
"""class CustomEmoji (
*,
id: snowflakes.Snowflake,
name: str,
is_animated: bool,
): ...Represents a custom emoji.
This is a custom emoji that is from a guild you might not be part of.
All CustomEmoji objects and their derivatives act as valid
Resource objects. This means you can use them as a
file when sending a message.
>>> emojis = await bot.rest.fetch_guild_emojis(12345)
>>> picks = random.choices(emojis, 5)
>>> await event.respond(files=picks)
Warning
Discord will not provide information on whether these emojis are animated or not when a reaction is removed and an event is fired. This is problematic if you need to try and determine the emoji that was removed. The side effect of this means that mentions for animated emojis will not be correct.
This will not be changed as stated here: https://github.com/discord/discord-api-docs/issues/1614#issuecomment-628548913
Method generated by attrs for class CustomEmoji.
class CustomEmoji(snowflakes.Unique, Emoji):
"""Represents a custom emoji.
This is a custom emoji that is from a guild you might not be part of.
All CustomEmoji objects and their derivatives act as valid
`hikari.files.Resource` objects. This means you can use them as a
file when sending a message.
>>> emojis = await bot.rest.fetch_guild_emojis(12345)
>>> picks = random.choices(emojis, 5)
>>> await event.respond(files=picks)
!!! warning
Discord will not provide information on whether these emojis are
animated or not when a reaction is removed and an event is fired. This
is problematic if you need to try and determine the emoji that was
removed. The side effect of this means that mentions for animated emojis
will not be correct.
This will not be changed as stated here:
https://github.com/discord/discord-api-docs/issues/1614#issuecomment-628548913
"""
id: snowflakes.Snowflake = attr.field(hash=True, repr=True)
"""The ID of this entity."""
name: str = attr.field(eq=False, hash=False, repr=True)
"""The name of the emoji."""
is_animated: bool = attr.field(eq=False, hash=False, repr=True)
"""Whether the emoji is animated."""
def __str__(self) -> str:
return self.mention
@property
def filename(self) -> str:
return str(self.id) + (".gif" if self.is_animated else ".png")
@property
@typing.final
def url_name(self) -> str:
return f"{self.name}:{self.id}"
@property
@typing.final
def mention(self) -> str:
return f"<{'a' if self.is_animated else ''}:{self.url_name}>"
@property
@typing.final
def url(self) -> str:
ext = "gif" if self.is_animated else "png"
return routes.CDN_CUSTOM_EMOJI.compile(urls.CDN_URL, emoji_id=self.id, file_format=ext)
@classmethod
def parse(cls, string: str, /) -> CustomEmoji:
"""Parse a given emoji mention string into a custom emoji object.
Parameters
----------
string : builtins.str
The emoji mention to parse.
Returns
-------
CustomEmoji
The parsed emoji object.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if emoji_match := _CUSTOM_EMOJI_REGEX.match(string):
return CustomEmoji(
id=snowflakes.Snowflake(emoji_match.group("id")),
name=emoji_match.group("name"),
is_animated=emoji_match.group("flags").lower() == "a",
)
raise ValueError("Expected an emoji mention")Represents an emoji that is known from a guild the bot is in …
Mixin for a class that enforces uniqueness by a snowflake ID.
Base class for all emojis …
Base class for a resource that resides on the internet …
Base for any uploadable or downloadable representation of information …
Abstract base class for generic types …
Helper class that provides a standard way to create an ABC using inheritance.
property created_at : datetime.datetimeWhen the object was created.
property is_animated : boolWhether the emoji is animated.
async def read(
*,
executor: Optional[concurrent.futures.Executor] = None,
) -> bytes: ...Read the entire resource at once into memory.
data = await resource.read(...)
# ^-- This is a shortcut for the following --v
async with resource.stream(...) as reader:
data = await reader.read()
Warning
If you simply wish to re-upload this resource to Discord via any endpoint in Hikari, you should opt to just pass this resource object directly. This way, Hikari can perform byte inception, which significantly reduces the memory usage for your bot as it grows larger.
executor : Optional[concurrent.futures.Executor]None, then the default executor is used for the
current event loop.bytesdef stream(
*,
executor: Optional[concurrent.futures.Executor] = None,
head_only: bool = False,
) -> AsyncReaderContextManager[WebReader]: ...Start streaming the content into memory by downloading it.
You can use this to fetch the entire resource, parts of the resource, or just to view any metadata that may be provided.
executor : Optional[concurrent.futures.Executor]head_only : boolFalse. If True, then the
implementation may only retrieve HEAD information if supported.
This currently only has any effect for web requests.Downloading an entire resource at once into memory:
async with obj.stream() as stream:
data = await stream.read()
Checking the metadata:
async with obj.stream() as stream:
mimetype = stream.mimetype
if mimetype is None:
...
elif mimetype not in whitelisted_mimetypes:
...
else:
...
Fetching the data-uri of a resource:
async with obj.stream() as stream:
data_uri = await stream.data_uri()
AsyncReaderContextManager[WebReader]BadRequestErrorUnauthorizedErrorForbiddenErrorNotFoundErrorClientHTTPResponseErrorInternalServerErrorHTTPResponseErrordef parse(
string: str,
/,
) -> CustomEmoji: ...Parse a given emoji mention string into a custom emoji object.
string : strCustomEmojiValueError@classmethod
def parse(cls, string: str, /) -> CustomEmoji:
"""Parse a given emoji mention string into a custom emoji object.
Parameters
----------
string : builtins.str
The emoji mention to parse.
Returns
-------
CustomEmoji
The parsed emoji object.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if emoji_match := _CUSTOM_EMOJI_REGEX.match(string):
return CustomEmoji(
id=snowflakes.Snowflake(emoji_match.group("id")),
name=emoji_match.group("name"),
is_animated=emoji_match.group("flags").lower() == "a",
)
raise ValueError("Expected an emoji mention")class Emoji (
*args,
**kwds,
): ...Base class for all emojis.
Any emoji implementation supports being used as a
Resource when uploading an attachment to the API.
This is achieved in the same way as using a
WebResource would achieve this.
class Emoji(files.WebResource, abc.ABC):
"""Base class for all emojis.
Any emoji implementation supports being used as a
`hikari.files.Resource` when uploading an attachment to the API.
This is achieved in the same way as using a
`hikari.files.WebResource` would achieve this.
"""
__slots__: typing.Sequence[str] = ()
@property
@abc.abstractmethod
def name(self) -> str:
"""Return the generic name/representation for this emoji."""
@property
@abc.abstractmethod
def url(self) -> str:
"""URL of the emoji image to display in clients."""
@property
@abc.abstractmethod
def url_name(self) -> str:
"""Name of the part of the emoji to use in requests."""
@property
@abc.abstractmethod
def mention(self) -> str:
"""Mention string to use to mention the emoji with."""
@classmethod
def parse(cls, string: str, /) -> Emoji:
"""Parse a given string into an emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
Emoji
The parsed emoji object. This will be a `CustomEmoji` if a custom
emoji mention, or a `UnicodeEmoji` otherwise.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if string.startswith("<") and string.endswith(">"):
return CustomEmoji.parse(string)
return UnicodeEmoji.parse(string)Represents a custom emoji …
Represents a unicode emoji …
Base class for a resource that resides on the internet …
Base for any uploadable or downloadable representation of information …
Abstract base class for generic types …
Helper class that provides a standard way to create an ABC using inheritance.
async def read(
*,
executor: Optional[concurrent.futures.Executor] = None,
) -> bytes: ...
Inherited from:
WebResource.read
Read the entire resource at once into memory.
data = await resource.read(...)
# ^-- This is a shortcut for the following --v
async with resource.stream(...) as reader:
data = await reader.read()
Warning
If you simply wish to re-upload this resource to Discord via any endpoint in Hikari, you should opt to just pass this resource object directly. This way, Hikari can perform byte inception, which significantly reduces the memory usage for your bot as it grows larger.
executor : Optional[concurrent.futures.Executor]None, then the default executor is used for the
current event loop.bytesdef stream(
*,
executor: Optional[concurrent.futures.Executor] = None,
head_only: bool = False,
) -> AsyncReaderContextManager[WebReader]: ...
Inherited from:
WebResource.stream
Start streaming the content into memory by downloading it.
You can use this to fetch the entire resource, parts of the resource, or just to view any metadata that may be provided.
executor : Optional[concurrent.futures.Executor]head_only : boolFalse. If True, then the
implementation may only retrieve HEAD information if supported.
This currently only has any effect for web requests.Downloading an entire resource at once into memory:
async with obj.stream() as stream:
data = await stream.read()
Checking the metadata:
async with obj.stream() as stream:
mimetype = stream.mimetype
if mimetype is None:
...
elif mimetype not in whitelisted_mimetypes:
...
else:
...
Fetching the data-uri of a resource:
async with obj.stream() as stream:
data_uri = await stream.data_uri()
AsyncReaderContextManager[WebReader]BadRequestErrorUnauthorizedErrorForbiddenErrorNotFoundErrorClientHTTPResponseErrorInternalServerErrorHTTPResponseErrordef parse(
string: str,
/,
) -> Emoji: ...Parse a given string into an emoji object.
string : strEmojiCustomEmoji if a custom
emoji mention, or a UnicodeEmoji otherwise.ValueError@classmethod
def parse(cls, string: str, /) -> Emoji:
"""Parse a given string into an emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
Emoji
The parsed emoji object. This will be a `CustomEmoji` if a custom
emoji mention, or a `UnicodeEmoji` otherwise.
Raises
------
builtins.ValueError
If a mention is given that has an invalid format.
"""
if string.startswith("<") and string.endswith(">"):
return CustomEmoji.parse(string)
return UnicodeEmoji.parse(string)class KnownCustomEmoji (
*,
id: snowflakes.Snowflake,
name: str,
is_animated: bool,
app: traits.RESTAware,
guild_id: snowflakes.Snowflake,
role_ids: Sequence[snowflakes.Snowflake],
user: Optional[users.User],
is_colons_required: bool,
is_managed: bool,
is_available: bool,
): ...Represents an emoji that is known from a guild the bot is in.
This is a specialization of CustomEmoji that is from a guild that you
are part of. As a result, it contains a lot more information with it.
Method generated by attrs for class KnownCustomEmoji.
class KnownCustomEmoji(CustomEmoji):
"""Represents an emoji that is known from a guild the bot is in.
This is a specialization of `CustomEmoji` that is from a guild that you
_are_ part of. As a result, it contains a lot more information with it.
"""
app: traits.RESTAware = attr.field(
repr=False, eq=False, hash=False, metadata={attr_extensions.SKIP_DEEP_COPY: True}
)
"""The client application that models may use for procedures."""
guild_id: snowflakes.Snowflake = attr.field(eq=False, hash=False, repr=False)
"""The ID of the guild this emoji belongs to."""
role_ids: typing.Sequence[snowflakes.Snowflake] = attr.field(eq=False, hash=False, repr=False)
"""The IDs of the roles that are whitelisted to use this emoji.
If this is empty then any user can use this emoji regardless of their roles.
"""
user: typing.Optional[users.User] = attr.field(eq=False, hash=False, repr=False)
"""The user that created the emoji.
!!! note
This will be `builtins.None` if you are missing the `MANAGE_EMOJIS_AND_STICKERS`
permission in the server the emoji is from.
"""
is_colons_required: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether this emoji must be wrapped in colons."""
is_managed: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether the emoji is managed by an integration."""
is_available: bool = attr.field(eq=False, hash=False, repr=False)
"""Whether this emoji can currently be used.
May be `builtins.False` due to a loss of Sever Boosts on the emoji's guild.
"""Represents a custom emoji …
Mixin for a class that enforces uniqueness by a snowflake ID.
Base class for all emojis …
Base class for a resource that resides on the internet …
Base for any uploadable or downloadable representation of information …
Abstract base class for generic types …
Helper class that provides a standard way to create an ABC using inheritance.
property app : traits.RESTAwareThe client application that models may use for procedures.
property created_at : datetime.datetimeWhen the object was created.
property guild_id : snowflakes.SnowflakeThe ID of the guild this emoji belongs to.
property id : snowflakes.SnowflakeThe ID of this entity.
property is_animated : boolWhether the emoji is animated.
property is_available : boolWhether this emoji can currently be used.
May be False due to a loss of Sever Boosts on the emoji's guild.
property is_colons_required : boolWhether this emoji must be wrapped in colons.
property is_managed : boolWhether the emoji is managed by an integration.
property role_ids : Sequence[snowflakes.Snowflake]The IDs of the roles that are whitelisted to use this emoji.
If this is empty then any user can use this emoji regardless of their roles.
property user : Optional[users.User]The user that created the emoji.
Note
This will be None if you are missing the MANAGE_EMOJIS_AND_STICKERS
permission in the server the emoji is from.
async def read(
*,
executor: Optional[concurrent.futures.Executor] = None,
) -> bytes: ...
Inherited from:
CustomEmoji.read
Read the entire resource at once into memory.
data = await resource.read(...)
# ^-- This is a shortcut for the following --v
async with resource.stream(...) as reader:
data = await reader.read()
Warning
If you simply wish to re-upload this resource to Discord via any endpoint in Hikari, you should opt to just pass this resource object directly. This way, Hikari can perform byte inception, which significantly reduces the memory usage for your bot as it grows larger.
executor : Optional[concurrent.futures.Executor]None, then the default executor is used for the
current event loop.bytesdef stream(
*,
executor: Optional[concurrent.futures.Executor] = None,
head_only: bool = False,
) -> AsyncReaderContextManager[WebReader]: ...
Inherited from:
CustomEmoji.stream
Start streaming the content into memory by downloading it.
You can use this to fetch the entire resource, parts of the resource, or just to view any metadata that may be provided.
executor : Optional[concurrent.futures.Executor]head_only : boolFalse. If True, then the
implementation may only retrieve HEAD information if supported.
This currently only has any effect for web requests.Downloading an entire resource at once into memory:
async with obj.stream() as stream:
data = await stream.read()
Checking the metadata:
async with obj.stream() as stream:
mimetype = stream.mimetype
if mimetype is None:
...
elif mimetype not in whitelisted_mimetypes:
...
else:
...
Fetching the data-uri of a resource:
async with obj.stream() as stream:
data_uri = await stream.data_uri()
AsyncReaderContextManager[WebReader]BadRequestErrorUnauthorizedErrorForbiddenErrorNotFoundErrorClientHTTPResponseErrorInternalServerErrorHTTPResponseErrordef parse(
string: str,
/,
) -> CustomEmoji: ...
Inherited from:
CustomEmoji.parse
Parse a given emoji mention string into a custom emoji object.
string : strCustomEmojiValueErrorclass UnicodeEmoji (...): ...Represents a unicode emoji.
Warning
A word of warning if you try to upload this emoji as a file attachment.
While this emoji type can be used to upload the Twemoji representations
of this emoji as a PNG, this is NOT foolproof. The mapping between
Discord's implementation and official Twemoji bindings is very flaky.
Responsible implementations relying on this behaviour will be
implemented to expect this behaviour in the form of
NotFoundError exceptions being raised when a mismatch may
occur. It is also likely that this will change in the future without
notice, so you will likely be relying on flaky behaviour.
If this is proven to be too unstable, this functionality will be removed in a future release after a deprecation period.
class UnicodeEmoji(str, Emoji):
"""Represents a unicode emoji.
!!! warning
A word of warning if you try to upload this emoji as a file attachment.
While this emoji type can be used to upload the Twemoji representations
of this emoji as a PNG, this is NOT foolproof. The mapping between
Discord's implementation and official Twemoji bindings is very flaky.
Responsible implementations relying on this behaviour will be
implemented to expect this behaviour in the form of
`hikari.errors.NotFoundError` exceptions being raised when a mismatch may
occur. It is also likely that this will change in the future without
notice, so you will likely be relying on flaky behaviour.
If this is proven to be too unstable, this functionality will be
removed in a future release after a deprecation period.
"""
__slots__: typing.Sequence[str] = ()
@property
def name(self) -> str:
"""Return the code points which form the emoji."""
return self
@property
@typing.final
def url_name(self) -> str:
return self
@property
def mention(self) -> str:
return self
@property
@typing.final
def codepoints(self) -> typing.Sequence[int]:
"""Integer codepoints that make up this emoji, as UTF-8."""
return [ord(c) for c in self]
@property
def filename(self) -> str:
"""Filename to use if re-uploading this emoji's PNG."""
codepoints = self.codepoints
# It looks like the rule is to delete character #2 if the value
# of this is 0xfe0f and the character is up to 4 characters long.
# Other than that, the mapping is 1-to-1. There's a couple of outliers
# to this 0xfe0f rule and they seem to follow a pattern where the
# codepoint after 0xfe0f is 0x200D but this might be a coincidence and
# if Discord start breaking this regularly I might need to ask for a
# more permanent solution. This is provisionally provided. If we find it
# breaks in other ways, I will just revoke this functionality in a
# future update.
if codepoints[1:2] == [0xFE0F] and len(codepoints) <= 4 and codepoints[2:3] != [0x200D]:
codepoints = [codepoints[0], *codepoints[2:]]
return "-".join(hex(c)[2:] for c in codepoints) + ".png"
@property
def url(self) -> str:
"""Get the URL of the PNG rendition of this emoji.
This will use the official Twitter "twemoji" repository to fetch
this information, as Discord only stores this in a hashed format
that uses SVG files, which is not usually of any use.
Since this uses "twemoji" directly, the emojis may not directly
match what is on Discord if Discord have failed to keep their emoji
packs up-to-date with this repository.
Example
-------
https://github.com/twitter/twemoji/raw/master/assets/72x72/1f004.png
"""
return _TWEMOJI_PNG_BASE_URL + self.filename
# @property
# @typing.final
# def unicode_names(self) -> typing.Sequence[str]:
# """Get the unicode name of the emoji as a sequence.
#
# This returns the name of each codepoint. If only one codepoint exists,
# then this will only have one item in the resulting sequence.
# """
# return [unicodedata.name(c) for c in self]
@property
@typing.final
def unicode_escape(self) -> str:
"""Get the unicode escape string for this emoji."""
return bytes(self, "unicode_escape").decode("utf-8")
@classmethod
@typing.final
def parse_codepoints(cls, codepoint: int, *codepoints: int) -> UnicodeEmoji:
"""Create a unicode emoji from one or more UTF-32 codepoints."""
return cls("".join(map(chr, (codepoint, *codepoints))))
@classmethod
@typing.final
def parse_unicode_escape(cls, escape: str) -> UnicodeEmoji:
"""Create a unicode emoji from a unicode escape string."""
return cls(escape.encode("utf-8"), "unicode_escape")
@classmethod
@typing.final
def parse(cls, string: str, /) -> UnicodeEmoji:
"""Parse a given string into a unicode emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
UnicodeEmoji
The parsed UnicodeEmoji object.
"""
# TODO: Re-add validity
# Ensure validity.
# for i, codepoint in enumerate(string, start=1):
# unicodedata.name(codepoint)
return cls(string)str(object='') -> str str(bytes_or_buffer[, encoding[, errors]]) -> str …
Base class for all emojis …
Base class for a resource that resides on the internet …
Base for any uploadable or downloadable representation of information …
Abstract base class for generic types …
Helper class that provides a standard way to create an ABC using inheritance.
property codepoints : Sequence[int]Integer codepoints that make up this emoji, as UTF-8.
property unicode_escape : strGet the unicode escape string for this emoji.
property url : strGet the URL of the PNG rendition of this emoji.
This will use the official Twitter "twemoji" repository to fetch this information, as Discord only stores this in a hashed format that uses SVG files, which is not usually of any use.
Since this uses "twemoji" directly, the emojis may not directly match what is on Discord if Discord have failed to keep their emoji packs up-to-date with this repository.
<https://github.com/twitter/twemoji/raw/master/assets/72x72/1f004.png>
async def read(
*,
executor: Optional[concurrent.futures.Executor] = None,
) -> bytes: ...Read the entire resource at once into memory.
data = await resource.read(...)
# ^-- This is a shortcut for the following --v
async with resource.stream(...) as reader:
data = await reader.read()
Warning
If you simply wish to re-upload this resource to Discord via any endpoint in Hikari, you should opt to just pass this resource object directly. This way, Hikari can perform byte inception, which significantly reduces the memory usage for your bot as it grows larger.
executor : Optional[concurrent.futures.Executor]None, then the default executor is used for the
current event loop.bytesdef stream(
*,
executor: Optional[concurrent.futures.Executor] = None,
head_only: bool = False,
) -> AsyncReaderContextManager[WebReader]: ...Start streaming the content into memory by downloading it.
You can use this to fetch the entire resource, parts of the resource, or just to view any metadata that may be provided.
executor : Optional[concurrent.futures.Executor]head_only : boolFalse. If True, then the
implementation may only retrieve HEAD information if supported.
This currently only has any effect for web requests.Downloading an entire resource at once into memory:
async with obj.stream() as stream:
data = await stream.read()
Checking the metadata:
async with obj.stream() as stream:
mimetype = stream.mimetype
if mimetype is None:
...
elif mimetype not in whitelisted_mimetypes:
...
else:
...
Fetching the data-uri of a resource:
async with obj.stream() as stream:
data_uri = await stream.data_uri()
AsyncReaderContextManager[WebReader]BadRequestErrorUnauthorizedErrorForbiddenErrorNotFoundErrorClientHTTPResponseErrorInternalServerErrorHTTPResponseErrordef parse(
string: str,
/,
) -> UnicodeEmoji: ...Parse a given string into a unicode emoji object.
string : strUnicodeEmoji@classmethod
@typing.final
def parse(cls, string: str, /) -> UnicodeEmoji:
"""Parse a given string into a unicode emoji object.
Parameters
----------
string : builtins.str
The emoji object to parse.
Returns
-------
UnicodeEmoji
The parsed UnicodeEmoji object.
"""
# TODO: Re-add validity
# Ensure validity.
# for i, codepoint in enumerate(string, start=1):
# unicodedata.name(codepoint)
return cls(string)def parse_codepoints(
codepoint: int,
*codepoints: int,
) -> UnicodeEmoji: ...Create a unicode emoji from one or more UTF-32 codepoints.
@classmethod
@typing.final
def parse_codepoints(cls, codepoint: int, *codepoints: int) -> UnicodeEmoji:
"""Create a unicode emoji from one or more UTF-32 codepoints."""
return cls("".join(map(chr, (codepoint, *codepoints))))def parse_unicode_escape(
escape: str,
) -> UnicodeEmoji: ...Create a unicode emoji from a unicode escape string.
@classmethod
@typing.final
def parse_unicode_escape(cls, escape: str) -> UnicodeEmoji:
"""Create a unicode emoji from a unicode escape string."""
return cls(escape.encode("utf-8"), "unicode_escape")