Source code for dateparser.timezone_parser

# -*- coding: utf-8 -*-
import regex as re
from datetime import datetime, timedelta, tzinfo

from .timezones import timezone_info_list


[docs]class StaticTzInfo(tzinfo): def __init__(self, name, offset): self.__offset = offset self.__name = name
[docs] def tzname(self, dt): return self.__name
[docs] def utcoffset(self, dt): return self.__offset
[docs] def dst(self, dt): return timedelta(0)
def __repr__(self): return "<%s '%s'>" % (self.__class__.__name__, self.__name)
[docs] def localize(self, dt, is_dst=False): if dt.tzinfo is not None: raise ValueError('Not naive datetime (tzinfo is already set)') return dt.replace(tzinfo=self)
[docs]def pop_tz_offset_from_string(date_string, as_offset=True): for name, info in _tz_offsets: timezone_re = info['regex'] if timezone_re.search(date_string): date_string = timezone_re.sub(r'\1', date_string) return date_string, StaticTzInfo(name, info['offset']) if as_offset else name else: return date_string, None
[docs]def convert_to_local_tz(datetime_obj, datetime_tz_offset): return datetime_obj - datetime_tz_offset + local_tz_offset
[docs]def get_tz_offsets(): def get_offset(tz_obj, regex, repl='', replw=''): return ( tz_obj[0], { 'regex': re.compile(re.sub(repl, replw, regex % tz_obj[0]), re.IGNORECASE), 'offset': timedelta(seconds=tz_obj[1]) } ) for tz_info in timezone_info_list: for regex in tz_info['regex_patterns']: for tz_obj in tz_info['timezones']: yield get_offset(tz_obj, regex) # alternate patterns for replace, replacewith in tz_info.get('replace', []): for tz_obj in tz_info['timezones']: yield get_offset(tz_obj, regex, repl=replace, replw=replacewith)
[docs]def get_local_tz_offset(): offset = datetime.now() - datetime.utcnow() offset = timedelta(days=offset.days, seconds=round(offset.seconds, -1)) return offset
_tz_offsets = list(get_tz_offsets()) local_tz_offset = get_local_tz_offset()