/
datetime8601.py
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/
datetime8601.py
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# -*- coding: utf-8 -*-
#
# Copyright 2019 - Swiss Data Science Center (SDSC)
# A partnership between École Polytechnique Fédérale de Lausanne (EPFL) and
# Eidgenössische Technische Hochschule Zürich (ETHZ).
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Renku datetime utilities."""
import datetime
import re
from dateutil.parser import parse as dateutil_parse_date
regex = (
r'^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[01]|0[1-9]|[12]['
r'0-9])T(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)?(Z|['
r'+-](?:2[0-3]|[01][0-9]):[0-5][0-9])?$'
)
match_iso8601 = re.compile(regex).match
def validate_iso8601(str_val):
"""Check if datetime string is in ISO8601 format."""
try:
if match_iso8601(str_val) is not None:
return True
except re.error:
pass
return False
def parse_date(value):
"""Convert date to datetime."""
if isinstance(value, datetime.datetime):
date = value
else:
date = dateutil_parse_date(value)
if not date.tzinfo:
# set timezone to local timezone
tz = datetime.datetime.now(datetime.timezone.utc).astimezone().tzinfo
date = date.replace(tzinfo=tz)
return date