author | Sverre Rabbelier <srabbelier@gmail.com> |
Sun, 08 Mar 2009 16:26:17 +0000 | |
changeset 1751 | 17c7a7a48dc7 |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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1 |
"Implementation of tzinfo classes for use with datetime.datetime." |
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|
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import locale |
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import time |
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from datetime import timedelta, tzinfo |
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from django.utils.encoding import smart_unicode |
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7 |
|
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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8 |
try: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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DEFAULT_ENCODING = locale.getdefaultlocale()[1] or 'ascii' |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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10 |
except: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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# Any problems at all determining the locale and we fallback. See #5846. |
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12 |
DEFAULT_ENCODING = 'ascii' |
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13 |
|
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Major reorganization of the soc svn repo, to merge into a single App Engine
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class FixedOffset(tzinfo): |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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"Fixed offset in minutes east from UTC." |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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def __init__(self, offset): |
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parents:
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17 |
if isinstance(offset, timedelta): |
ff1a9aa48cfd
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parents:
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self.__offset = offset |
ff1a9aa48cfd
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parents:
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offset = self.__offset.seconds // 60 |
ff1a9aa48cfd
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parents:
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else: |
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
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self.__offset = timedelta(minutes=offset) |
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parents:
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|
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self.__name = u"%+03d%02d" % (offset / 60, offset % 60) |
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def __repr__(self): |
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return self.__name |
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|
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def utcoffset(self, dt): |
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return self.__offset |
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|
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def tzname(self, dt): |
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return self.__name |
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|
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def dst(self, dt): |
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return timedelta(0) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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|
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class LocalTimezone(tzinfo): |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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"Proxy timezone information from time module." |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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def __init__(self, dt): |
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tzinfo.__init__(self) |
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Todd Larsen <tlarsen@google.com>
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self._tzname = self.tzname(dt) |
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|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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def __repr__(self): |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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return self._tzname |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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45 |
|
03e267d67478
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def utcoffset(self, dt): |
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if self._isdst(dt): |
03e267d67478
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return timedelta(seconds=-time.altzone) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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49 |
else: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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return timedelta(seconds=-time.timezone) |
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51 |
|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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def dst(self, dt): |
03e267d67478
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53 |
if self._isdst(dt): |
03e267d67478
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54 |
return timedelta(seconds=-time.altzone) - timedelta(seconds=-time.timezone) |
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else: |
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return timedelta(0) |
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Todd Larsen <tlarsen@google.com>
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|
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def tzname(self, dt): |
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59 |
try: |
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return smart_unicode(time.tzname[self._isdst(dt)], DEFAULT_ENCODING) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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61 |
except UnicodeDecodeError: |
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return None |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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def _isdst(self, dt): |
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65 |
tt = (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.weekday(), 0, -1) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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66 |
try: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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|
67 |
stamp = time.mktime(tt) |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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68 |
except (OverflowError, ValueError): |
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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69 |
# 32 bit systems can't handle dates after Jan 2038, and certain |
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
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parents:
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70 |
# systems can't handle dates before ~1901-12-01: |
ff1a9aa48cfd
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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71 |
# |
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72 |
# >>> time.mktime((1900, 1, 13, 0, 0, 0, 0, 0, 0)) |
ff1a9aa48cfd
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73 |
# OverflowError: mktime argument out of range |
ff1a9aa48cfd
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74 |
# >>> time.mktime((1850, 1, 13, 0, 0, 0, 0, 0, 0)) |
ff1a9aa48cfd
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parents:
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75 |
# ValueError: year out of range |
ff1a9aa48cfd
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parents:
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76 |
# |
ff1a9aa48cfd
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Pawel Solyga <Pawel.Solyga@gmail.com>
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77 |
# In this case, we fake the date, because we only care about the |
ff1a9aa48cfd
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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|
78 |
# DST flag. |
54
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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|
79 |
tt = (2037,) + tt[1:] |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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|
80 |
stamp = time.mktime(tt) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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|
81 |
tt = time.localtime(stamp) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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|
82 |
return tt.tm_isdst > 0 |