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helpers.py
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102 lines (80 loc) · 2.75 KB
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#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2017
# 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 helper functions."""
import re
from datetime import datetime
try:
from html import escape as escape_html # noqa: F401
except ImportError:
from cgi import escape as escape_html # noqa: F401
# Not using future.backports.datetime here as datetime value might be an input from the user,
# making every isinstace() call more delicate. So we just use our own compat layer.
if hasattr(datetime, 'timestamp'):
# Python 3.3+
def _timestamp(dt_obj):
return dt_obj.timestamp()
else:
# Python < 3.3 (incl 2.7)
from time import mktime
def _timestamp(dt_obj):
return mktime(dt_obj.timetuple())
def escape_markdown(text):
"""Helper function to escape telegram markup symbols."""
escape_chars = '\*_`\['
return re.sub(r'([%s])' % escape_chars, r'\\\1', text)
def to_timestamp(dt_obj):
"""
Args:
dt_obj (:class:`datetime.datetime`):
Returns:
int:
"""
if not dt_obj:
return None
return int(_timestamp(dt_obj))
def from_timestamp(unixtime):
"""
Args:
unixtime (int):
Returns:
datetime.datetime:
"""
if not unixtime:
return None
return datetime.fromtimestamp(unixtime)
def mention_html(user_id, name):
"""
Args:
user_id (:obj:`int`) The user's id which you want to mention.
name (:obj:`str`) The name the mention is showing.
Returns:
:obj:`str`: The inline mention for the user as html.
"""
if isinstance(user_id, int):
return '<a href="tg://user?id={}">{}</a>'.format(user_id, escape_html(name))
def mention_markdown(user_id, name):
"""
Args:
user_id (:obj:`int`) The user's id which you want to mention.
name (:obj:`str`) The name the mention is showing.
Returns:
:obj:`str`: The inline mention for the user as markdown.
"""
if isinstance(user_id, int):
return '[{}](tg://user?id={})'.format(escape_markdown(name), user_id)