mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
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33512ffd2e
* Improved CommandHandler Now you can pass list of commands instead of one command * Added tests for list of commands * Return backward compatibility Renamed `commands` to `command` in CommandHandler * Added test for a command not in the list * Fixed py2 unicode command support in `CommandHandler`
136 lines
6.2 KiB
Python
136 lines
6.2 KiB
Python
#!/usr/bin/env python
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015-2017
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# Leandro Toledo de Souza <devs@python-telegram-bot.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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""" This module contains the CommandHandler class """
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import warnings
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from .handler import Handler
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from telegram import Update
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class CommandHandler(Handler):
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"""
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Handler class to handle Telegram commands. Commands are Telegram messages
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that start with ``/``, optionally followed by an ``@`` and the bot's
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name and/or some additional text.
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Args:
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command (str|list): The name of the command or list of command this handler should
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listen for.
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callback (function): A function that takes ``bot, update`` as
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positional arguments. It will be called when the ``check_update``
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has determined that an update should be processed by this handler.
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filters (telegram.ext.BaseFilter): A filter inheriting from
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:class:`telegram.ext.filters.BaseFilter`. Standard filters can be found in
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:class:`telegram.ext.filters.Filters`. Filters can be combined using bitwise
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operators (& for and, | for or).
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allow_edited (Optional[bool]): If the handler should also accept edited messages.
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Default is ``False``
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pass_args (optional[bool]): If the handler should be passed the
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arguments passed to the command as a keyword argument called `
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``args``. It will contain a list of strings, which is the text
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following the command split on single or consecutive whitespace characters.
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Default is ``False``
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pass_update_queue (optional[bool]): If set to ``True``, a keyword argument called
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``update_queue`` will be passed to the callback function. It will be the ``Queue``
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instance used by the ``Updater`` and ``Dispatcher`` that contains new updates which can
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be used to insert updates. Default is ``False``.
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pass_job_queue (optional[bool]): If set to ``True``, a keyword argument called
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``job_queue`` will be passed to the callback function. It will be a ``JobQueue``
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instance created by the ``Updater`` which can be used to schedule new jobs.
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Default is ``False``.
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pass_user_data (optional[bool]): If set to ``True``, a keyword argument called
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``user_data`` will be passed to the callback function. It will be a ``dict`` you
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can use to keep any data related to the user that sent the update. For each update of
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the same user, it will be the same ``dict``. Default is ``False``.
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pass_chat_data (optional[bool]): If set to ``True``, a keyword argument called
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``chat_data`` will be passed to the callback function. It will be a ``dict`` you
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can use to keep any data related to the chat that the update was sent in.
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For each update in the same chat, it will be the same ``dict``. Default is ``False``.
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"""
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def __init__(self,
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command,
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callback,
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filters=None,
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allow_edited=False,
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pass_args=False,
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pass_update_queue=False,
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pass_job_queue=False,
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pass_user_data=False,
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pass_chat_data=False):
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super(CommandHandler, self).__init__(
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callback,
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pass_update_queue=pass_update_queue,
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pass_job_queue=pass_job_queue,
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pass_user_data=pass_user_data,
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pass_chat_data=pass_chat_data)
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try:
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_str = basestring # Python 2
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except NameError:
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_str = str # Python 3
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if isinstance(command, _str):
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self.command = [command]
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else:
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self.command = command
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self.filters = filters
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self.allow_edited = allow_edited
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self.pass_args = pass_args
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# We put this up here instead of with the rest of checking code
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# in check_update since we don't wanna spam a ton
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if isinstance(self.filters, list):
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warnings.warn('Using a list of filters in MessageHandler is getting '
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'deprecated, please use bitwise operators (& and |) '
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'instead. More info: https://git.io/vPTbc.')
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def check_update(self, update):
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if (isinstance(update, Update)
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and (update.message or update.edited_message and self.allow_edited)):
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message = update.message or update.edited_message
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if message.text:
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command = message.text[1:].split(' ')[0].split('@')
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command.append(
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message.bot.username) # in case the command was send without a username
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if self.filters is None:
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res = True
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elif isinstance(self.filters, list):
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res = any(func(message) for func in self.filters)
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else:
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res = self.filters(message)
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return res and (message.text.startswith('/') and command[0] in self.command
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and command[1].lower() == message.bot.username.lower())
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else:
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return False
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else:
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return False
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def handle_update(self, update, dispatcher):
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optional_args = self.collect_optional_args(dispatcher, update)
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message = update.message or update.edited_message
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if self.pass_args:
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optional_args['args'] = message.text.split()[1:]
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return self.callback(dispatcher.bot, update, **optional_args)
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