python-telegram-bot/telegram/file.py
2017-02-27 14:33:58 +01:00

104 lines
3.2 KiB
Python

#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2016
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program. If not, see [http://www.gnu.org/licenses/].
"""This module contains an object that represents a Telegram File."""
from os.path import basename
from telegram import TelegramObject
class File(TelegramObject):
"""This object represents a Telegram File.
Attributes:
file_id (str):
file_size (str):
file_path (str):
Args:
file_id (str):
bot (telegram.Bot):
file_size (Optional[int]):
file_path (Optional[str]):
**kwargs (dict): Arbitrary keyword arguments.
"""
def __init__(self, file_id, bot, file_size=None, file_path=None, **kwargs):
# Required
self.file_id = str(file_id)
# Optionals
self.file_size = file_size
if file_path:
self.file_path = str(file_path)
self.bot = bot
@staticmethod
def de_json(data, bot):
"""
Args:
data (dict):
bot (telegram.Bot):
Returns:
telegram.File:
"""
if not data:
return None
return File(bot=bot, **data)
def download(self, custom_path=None, out=None, timeout=None):
"""
Download this file. By default, the file is saved in the current working directory with its
original filename as reported by Telegram. If a ``custom_path`` is supplied, it will be
saved to that path instead. If ``out`` is defined, the file contents will be saved to that
object using the ``out.write`` method. ``custom_path`` and ``out`` are mutually exclusive.
Args:
custom_path (Optional[str]): Custom path.
out (Optional[object]): A file-like object. Must be opened in binary mode, if
applicable.
timeout (Optional[int|float]): If this value is specified, use it as the read timeout
from the server (instead of the one specified during creation of the connection
pool).
Raises:
ValueError: If both ``custom_path`` and ``out`` are passed.
"""
if custom_path is not None and out is not None:
raise ValueError('custom_path and out are mutually exclusive')
url = self.file_path
if out:
buf = self.bot.request.retrieve(url)
out.write(buf)
else:
if custom_path:
filename = custom_path
else:
filename = basename(url)
self.bot.request.download(url, filename, timeout=timeout)