mirror of
https://github.com/django/django.git
synced 2025-04-29 19:54:37 +00:00
953badbea5
backwards compatible for all practical purposes. Fixed #2391, #2489, #2996, #3322, #3344, #3370, #3406, #3432, #3454, #3492, #3582, #3690, #3878, #3891, #3937, #4039, #4141, #4227, #4286, #4291, #4300, #4452, #4702 git-svn-id: http://code.djangoproject.com/svn/django/trunk@5609 bcc190cf-cafb-0310-a4f2-bffc1f526a37
60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
"Implementation of tzinfo classes for use with datetime.datetime."
|
|
|
|
import locale
|
|
import time
|
|
from datetime import timedelta, tzinfo
|
|
from django.utils.encoding import smart_unicode
|
|
|
|
DEFAULT_ENCODING = locale.getdefaultlocale()[1] or 'ascii'
|
|
|
|
class FixedOffset(tzinfo):
|
|
"Fixed offset in minutes east from UTC."
|
|
def __init__(self, offset):
|
|
self.__offset = timedelta(minutes=offset)
|
|
self.__name = u"%+03d%02d" % (offset // 60, offset % 60)
|
|
|
|
def __repr__(self):
|
|
return self.__name
|
|
|
|
def utcoffset(self, dt):
|
|
return self.__offset
|
|
|
|
def tzname(self, dt):
|
|
return self.__name
|
|
|
|
def dst(self, dt):
|
|
return timedelta(0)
|
|
|
|
class LocalTimezone(tzinfo):
|
|
"Proxy timezone information from time module."
|
|
def __init__(self, dt):
|
|
tzinfo.__init__(self, dt)
|
|
self._tzname = self.tzname(dt)
|
|
|
|
def __repr__(self):
|
|
return self._tzname
|
|
|
|
def utcoffset(self, dt):
|
|
if self._isdst(dt):
|
|
return timedelta(seconds=-time.altzone)
|
|
else:
|
|
return timedelta(seconds=-time.timezone)
|
|
|
|
def dst(self, dt):
|
|
if self._isdst(dt):
|
|
return timedelta(seconds=-time.altzone) - timedelta(seconds=-time.timezone)
|
|
else:
|
|
return timedelta(0)
|
|
|
|
def tzname(self, dt):
|
|
try:
|
|
return smart_unicode(time.tzname[self._isdst(dt)], DEFAULT_ENCODING)
|
|
except UnicodeDecodeError:
|
|
return None
|
|
|
|
def _isdst(self, dt):
|
|
tt = (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.weekday(), 0, -1)
|
|
stamp = time.mktime(tt)
|
|
tt = time.localtime(stamp)
|
|
return tt.tm_isdst > 0
|