/usr/lib/python2.7/dist-packages/pycalendar/timezone.py is in python-pycalendar 2.0~svn13177-1.
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# Copyright (c) 2007-2012 Cyrus Daboo. All rights reserved.
#
# 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.
##
from pycalendar import stringutils
from pycalendar.timezonedb import PyCalendarTimezoneDatabase
class PyCalendarTimezone(object):
"""
Wrapper around a timezone specification. There are three options:
UTC - when mUTC is True
TZID - when mUTC is False and tzid is a str
UTCOFFSET - when mUTC is False and tzid is an int
"""
sDefaultTimezone = None
def __init__(self, utc=None, tzid=None):
if utc is not None:
self.mUTC = utc
self.mTimezone = tzid
elif tzid is not None:
self.mUTC = tzid.lower() == 'utc'
self.mTimezone = None if tzid.lower() == 'utc' else tzid
else:
self.mUTC = True
self.mTimezone = None
# Copy default timezone if it exists
if PyCalendarTimezone.sDefaultTimezone is not None:
self.mUTC = PyCalendarTimezone.sDefaultTimezone.mUTC
self.mTimezone = PyCalendarTimezone.sDefaultTimezone.mTimezone
def duplicate(self):
return PyCalendarTimezone(self.mUTC, self.mTimezone)
def equals(self, comp):
# Always match if any one of them is 'floating'
if self.floating() or comp.floating():
return True
elif self.mUTC != comp.mUTC:
return False
else:
return self.mUTC or stringutils.compareStringsSafe(self.mTimezone, comp.mTimezone)
@staticmethod
def same(utc1, tzid1, utc2, tzid2):
# Always match if any one of them is 'floating'
if PyCalendarTimezone.is_float(utc1, tzid1) or PyCalendarTimezone.is_float(utc2, tzid2):
return True
elif utc1 != utc2:
return False
else:
return utc1 or stringutils.compareStringsSafe(tzid1, tzid2)
@staticmethod
def is_float(utc, tzid):
return not utc and not tzid
def getUTC(self):
return self.mUTC
def setUTC(self, utc):
self.mUTC = utc
def getTimezoneID(self):
return self.mTimezone
def setTimezoneID(self, tzid):
self.mTimezone = tzid
def floating(self):
return not self.mUTC and self.mTimezone is None
def hasTZID(self):
return not self.mUTC and self.mTimezone is not None
def timeZoneSecondsOffset(self, dt, relative_to_utc=False):
if self.mUTC:
return 0
elif self.mTimezone is None:
return PyCalendarTimezoneDatabase.getTimezoneOffsetSeconds(PyCalendarTimezone.sDefaultTimezone.getTimezoneID(), dt, relative_to_utc)
elif isinstance(self.mTimezone, int):
return self.mTimezone
else:
# Look up timezone and resolve date using default timezones
return PyCalendarTimezoneDatabase.getTimezoneOffsetSeconds(self.mTimezone, dt, relative_to_utc)
def timeZoneDescriptor(self, dt):
if self.mUTC:
return "(UTC)"
elif self.mTimezone is None:
return PyCalendarTimezoneDatabase.getTimezoneDescriptor(PyCalendarTimezone.sDefaultTimezone.getTimezoneID(), dt)
elif isinstance(self.mTimezone, int):
sign = "-" if self.mTimezone < 0 else "+"
hours = abs(self.mTimezone) / 3600
minutes = divmod(abs(self.mTimezone) / 60, 60)[1]
return "%s%02d%02d" % (sign, hours, minutes,)
else:
# Look up timezone and resolve date using default timezones
return PyCalendarTimezoneDatabase.getTimezoneDescriptor(self.mTimezone, dt)
PyCalendarTimezone.sDefaultTimezone = PyCalendarTimezone()
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