# -*- coding: utf-8 -*- # Copyright (C) 2010-2018 RhodeCode GmbH # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License, version 3 # (only), as published by the Free Software Foundation. # # 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 General Public License for more details. # # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # This program is dual-licensed. If you wish to learn more about the # RhodeCode Enterprise Edition, including its added features, Support services, # and proprietary license terms, please see https://rhodecode.com/licenses/ """ Provides utilities around date and time handling """ import datetime import time def makedate(): lt = time.localtime() if lt[8] == 1 and time.daylight: tz = time.altzone else: tz = time.timezone return time.mktime(lt), tz def utcdate_fromtimestamp(unixts, tzoffset=0): """ Makes a local datetime object out of unix timestamp :param unixts: :param tzoffset: """ return datetime.datetime.utcfromtimestamp(float(unixts)) def date_astimestamp(value): """ Convert a given `datetime.datetime` into a `float` like `time.time` """ return time.mktime(value.timetuple()) + value.microsecond / 1E6 def date_to_timestamp_plus_offset(value): """ Convert a given `datetime.datetime` into a unix timestamp and offset. """ # TODO: johbo: The time handling looks quite fragile here since we mix # system time zones with naive datetime instances. if value is None: value = time.time() elif isinstance(value, datetime.datetime): assert not is_aware(value), ( "This code is not prepared to handle aware datetime instances") value = date_astimestamp(value) return (value, time.timezone) def is_aware(value): """ Determines if a given datetime.time is aware. The logic is described in Python's docs: http://docs.python.org/library/datetime.html#datetime.tzinfo """ return (value.tzinfo is not None and value.tzinfo.utcoffset(value) is not None)