Update dateutil to latest version and include all files

Signed-off-by: James Vega <jamessan@users.sourceforge.net>

plugins/Time/local/dateutil/__init__.py

@@ -1,8 +1,9 @@
 """
-Copyright (c) 2003  Gustavo Niemeyer <niemeyer@conectiva.com>
+Copyright (c) 2003-2007  Gustavo Niemeyer <gustavo@niemeyer.net>
 
 This module offers extensions to the standard python 2.3+
 datetime module.
 """
-__author__ = "Gustavo Niemeyer <niemeyer@conectiva.com>"
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
 __license__ = "PSF License"
+__version__ = "1.4.1"

plugins/Time/local/dateutil/easter.py

@@ -0,0 +1,92 @@
+"""
+Copyright (c) 2003-2007  Gustavo Niemeyer <gustavo@niemeyer.net>
+
+This module offers extensions to the standard python 2.3+
+datetime module.
+"""
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
+__license__ = "PSF License"
+
+import datetime
+
+__all__ = ["easter", "EASTER_JULIAN", "EASTER_ORTHODOX", "EASTER_WESTERN"]
+
+EASTER_JULIAN   = 1
+EASTER_ORTHODOX = 2
+EASTER_WESTERN  = 3
+
+def easter(year, method=EASTER_WESTERN):
+    """
+    This method was ported from the work done by GM Arts,
+    on top of the algorithm by Claus Tondering, which was
+    based in part on the algorithm of Ouding (1940), as
+    quoted in "Explanatory Supplement to the Astronomical
+    Almanac", P.  Kenneth Seidelmann, editor.
+
+    This algorithm implements three different easter
+    calculation methods:
+    
+    1 - Original calculation in Julian calendar, valid in
+        dates after 326 AD
+    2 - Original method, with date converted to Gregorian
+        calendar, valid in years 1583 to 4099
+    3 - Revised method, in Gregorian calendar, valid in
+        years 1583 to 4099 as well
+
+    These methods are represented by the constants:
+
+    EASTER_JULIAN   = 1
+    EASTER_ORTHODOX = 2
+    EASTER_WESTERN  = 3
+
+    The default method is method 3.
+    
+    More about the algorithm may be found at:
+
+    http://users.chariot.net.au/~gmarts/eastalg.htm
+
+    and
+
+    http://www.tondering.dk/claus/calendar.html
+
+    """
+
+    if not (1 <= method <= 3):
+        raise ValueError, "invalid method"
+
+    # g - Golden year - 1
+    # c - Century
+    # h - (23 - Epact) mod 30
+    # i - Number of days from March 21 to Paschal Full Moon
+    # j - Weekday for PFM (0=Sunday, etc)
+    # p - Number of days from March 21 to Sunday on or before PFM
+    #     (-6 to 28 methods 1 & 3, to 56 for method 2)
+    # e - Extra days to add for method 2 (converting Julian
+    #     date to Gregorian date)
+
+    y = year
+    g = y % 19
+    e = 0
+    if method < 3:
+        # Old method
+        i = (19*g+15)%30
+        j = (y+y//4+i)%7
+        if method == 2:
+            # Extra dates to convert Julian to Gregorian date
+            e = 10
+            if y > 1600:
+                e = e+y//100-16-(y//100-16)//4
+    else:
+        # New method
+        c = y//100
+        h = (c-c//4-(8*c+13)//25+19*g+15)%30
+        i = h-(h//28)*(1-(h//28)*(29//(h+1))*((21-g)//11))
+        j = (y+y//4+i+2-c+c//4)%7
+
+    # p can be from -6 to 56 corresponding to dates 22 March to 23 May
+    # (later dates apply to method 2, although 23 May never actually occurs)
+    p = i-j+e
+    d = 1+(p+27+(p+6)//40)%31
+    m = 3+(p+26)//30
+    return datetime.date(int(y),int(m),int(d))
+

plugins/Time/local/dateutil/parser.py

@@ -1,26 +1,31 @@
 # -*- coding:iso-8859-1 -*-
-# Gotten from: http://moin.conectiva.com.br/DateUtil
-
 """
-Copyright (c) 2003  Gustavo Niemeyer <niemeyer@conectiva.com>
+Copyright (c) 2003-2007  Gustavo Niemeyer <gustavo@niemeyer.net>
 
 This module offers extensions to the standard python 2.3+
 datetime module.
 """
-__author__ = "Gustavo Niemeyer <niemeyer@conectiva.com>"
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
 __license__ = "PSF License"
 
-import os.path
-import string
-import sys
-import time
-
 import datetime
+import string
+import time
+import sys
+import os
+
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from StringIO import StringIO
+
 import relativedelta
 import tz
 
+
 __all__ = ["parse", "parserinfo"]
 
+
 # Some pointers:
 #
 # http://www.cl.cam.ac.uk/~mgk25/iso-time.html
@@ -30,12 +35,9 @@ __all__ = ["parse", "parserinfo"]
 # http://search.cpan.org/author/MUIR/Time-modules-2003.0211/lib/Time/ParseDate.pm
 # http://stein.cshl.org/jade/distrib/docs/java.text.SimpleDateFormat.html
 
-try:
-    from cStringIO import StringIO
-except ImportError:
-    from StringIO import StringIO
 
-class _timelex:
+class _timelex(object):
+
     def __init__(self, instream):
         if isinstance(instream, basestring):
             instream = StringIO(instream)
@@ -64,6 +66,8 @@ class _timelex:
                 nextchar = self.charstack.pop(0)
             else:
                 nextchar = self.instream.read(1)
+                while nextchar == '\x00':
+                    nextchar = self.instream.read(1)
             if not nextchar:
                 self.eof = True
                 break
@@ -139,6 +143,7 @@ class _timelex:
         return list(cls(s))
     split = classmethod(split)
 
+
 class _resultbase(object):
 
     def __init__(self):
@@ -156,7 +161,8 @@ class _resultbase(object):
     def __repr__(self):
         return self._repr(self.__class__.__name__)
 
-class parserinfo:
+
+class parserinfo(object):
 
     # m from a.m/p.m, t from ISO T separator
     JUMP = [" ", ".", ",", ";", "-", "/", "'",
@@ -204,7 +210,7 @@ class parserinfo:
         self.yearfirst = yearfirst
 
         self._year = time.localtime().tm_year
-        self._century = self._year/100*100
+        self._century = self._year//100*100
 
     def _convert(self, lst):
         dct = {}
@@ -281,10 +287,10 @@ class parserinfo:
         return True
 
 
-class parser:
+class parser(object):
 
-    def __init__(self, parserinfo=parserinfo):
+    def __init__(self, info=None):
-        self.info = parserinfo()
+        self.info = info or parserinfo()
 
     def parse(self, timestr, default=None,
                     ignoretz=False, tzinfos=None,
@@ -355,15 +361,18 @@ class parser:
 
                 # Check if it's a number
                 try:
-                    value = float(l[i])
+                    value_repr = l[i]
+                    value = float(value_repr)
                 except ValueError:
                     value = None
+
                 if value is not None:
                     # Token is a number
                     len_li = len(l[i])
                     i += 1
                     if (len(ymd) == 3 and len_li in (2, 4)
-                        and (i >= len_l or l[i] != ':')):
+                        and (i >= len_l or (l[i] != ':' and
+                                            info.hms(l[i]) is None))):
                         # 19990101T23[59]
                         s = l[i-1]
                         res.hour = int(s[:2])
@@ -380,10 +389,7 @@ class parser:
                             # 19990101T235959[.59]
                             res.hour = int(s[:2])
                             res.minute = int(s[2:4])
-                            value = float(s[4:])
+                            res.second, res.microsecond = _parsems(s[4:])
-                            res.second = int(value)
-                            if value%1:
-                                res.microsecond = int(1000000*(value%1))
                     elif len_li == 8:
                         # YYYYMMDD
                         s = l[i-1]
@@ -417,15 +423,15 @@ class parser:
                                 if value%1:
                                     res.second = int(60*(value%1))
                             elif idx == 2:
-                                res.second = int(value)
+                                res.second, res.microsecond = \
-                                if value%1:
+                                    _parsems(value_repr)
-                                    res.microsecond = int(1000000*(value%1))
                             i += 1
                             if i >= len_l or idx == 2:
                                 break
                             # 12h00
                             try:
-                                value = float(l[i])
+                                value_repr = l[i]
+                                value = float(value_repr)
                             except ValueError:
                                 break
                             else:
@@ -445,10 +451,7 @@ class parser:
                             res.second = int(60*(value%1))
                         i += 1
                         if i < len_l and l[i] == ':':
-                            value = float(l[i+1])
+                            res.second, res.microsecond = _parsems(l[i+1])
-                            res.second = int(value)
-                            if value%1:
-                                res.microsecond = int(1000000*(value%1))
                             i += 2
                     elif i < len_l and l[i] in ('-', '/', '.'):
                         sep = l[i]
@@ -693,7 +696,8 @@ def parse(timestr, parserinfo=None, **kwargs):
     else:
         return DEFAULTPARSER.parse(timestr, **kwargs)
 
-class _tzparser:
+
+class _tzparser(object):
 
     class _result(_resultbase):
 
@@ -737,6 +741,8 @@ class _tzparser:
                     if (i < len_l and
                         (l[i] in ('+', '-') or l[i][0] in "0123456789")):
                         if l[i] in ('+', '-'):
+                            # Yes, that's right.  See the TZ variable
+                            # documentation.
                             signal = (1,-1)[l[i] == '+']
                             i += 1
                         else:
@@ -862,8 +868,19 @@ class _tzparser:
         
         return res
 
+
 DEFAULTTZPARSER = _tzparser()
 def _parsetz(tzstr):
     return DEFAULTTZPARSER.parse(tzstr)
 
+
+def _parsems(value):
+    """Parse a I[.F] seconds value into (seconds, microseconds)."""
+    if "." not in value:
+        return int(value), 0
+    else:
+        i, f = value.split(".")
+        return int(i), int(f.ljust(6, "0")[:6])
+
+
 # vim:ts=4:sw=4:et

plugins/Time/local/dateutil/relativedelta.py

@@ -1,10 +1,10 @@
 """
-Copyright (c) 2003  Gustavo Niemeyer <niemeyer@conectiva.com>
+Copyright (c) 2003-2007  Gustavo Niemeyer <gustavo@niemeyer.net>
 
 This module offers extensions to the standard python 2.3+
 datetime module.
 """
-__author__ = "Gustavo Niemeyer <niemeyer@conectiva.com>"
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
 __license__ = "PSF License"
 
 import datetime
@@ -15,7 +15,7 @@ __all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
 class weekday(object):
     __slots__ = ["weekday", "n"]
 
-    def __init__(self, weekday, n=0):
+    def __init__(self, weekday, n=None):
         self.weekday = weekday
         self.n = n
 
@@ -201,27 +201,27 @@ Here is the behavior of operations with relativedelta:
 
     def _fix(self):
         if abs(self.microseconds) > 999999:
-            s = self.microseconds/abs(self.microseconds)
+            s = self.microseconds//abs(self.microseconds)
             div, mod = divmod(self.microseconds*s, 1000000)
             self.microseconds = mod*s
             self.seconds += div*s
         if abs(self.seconds) > 59:
-            s = self.seconds/abs(self.seconds)
+            s = self.seconds//abs(self.seconds)
             div, mod = divmod(self.seconds*s, 60)
             self.seconds = mod*s
             self.minutes += div*s
         if abs(self.minutes) > 59:
-            s = self.minutes/abs(self.minutes)
+            s = self.minutes//abs(self.minutes)
             div, mod = divmod(self.minutes*s, 60)
             self.minutes = mod*s
             self.hours += div*s
         if abs(self.hours) > 23:
-            s = self.hours/abs(self.hours)
+            s = self.hours//abs(self.hours)
             div, mod = divmod(self.hours*s, 24)
             self.hours = mod*s
             self.days += div*s
         if abs(self.months) > 11:
-            s = self.months/abs(self.months)
+            s = self.months//abs(self.months)
             div, mod = divmod(self.months*s, 12)
             self.months = mod*s
             self.years += div*s
@@ -235,7 +235,7 @@ Here is the behavior of operations with relativedelta:
     def _set_months(self, months):
         self.months = months
         if abs(self.months) > 11:
-            s = self.months/abs(self.months)
+            s = self.months//abs(self.months)
             div, mod = divmod(self.months*s, 12)
             self.months = mod*s
             self.years = div*s
@@ -392,7 +392,7 @@ Here is the behavior of operations with relativedelta:
             if self.weekday.weekday != other.weekday.weekday:
                 return False
             n1, n2 = self.weekday.n, other.weekday.n
-            if n1 != n2 and not (n1 in (0, 1) and n2 in (0, 1)):
+            if n1 != n2 and not ((not n1 or n1 == 1) and (not n2 or n2 == 1)):
                 return False
         return (self.years == other.years and
                 self.months == other.months and

plugins/Time/local/dateutil/tz.py

@@ -1,22 +1,29 @@
 """
-Copyright (c) 2003  Gustavo Niemeyer <niemeyer@conectiva.com>
+Copyright (c) 2003-2007  Gustavo Niemeyer <gustavo@niemeyer.net>
 
 This module offers extensions to the standard python 2.3+
 datetime module.
 """
-__author__ = "Gustavo Niemeyer <niemeyer@conectiva.com>"
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
 __license__ = "PSF License"
 
 import datetime
 import struct
 import time
+import sys
+import os
 
-import relativedelta
+relativedelta = None
-import parser
+parser = None
-rrule = None # XXX Where does this come from?  Why isn't it here?
+rrule = None
 
-__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile",
+__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
-           "tzrange", "tzstr", "tzical", "gettz"]
+           "tzstr", "tzical", "tzwin", "tzwinlocal", "gettz"]
+
+try:
+    from dateutil.tzwin import tzwin, tzwinlocal
+except (ImportError, OSError):
+    tzwin, tzwinlocal = None, None
 
 ZERO = datetime.timedelta(0)
 EPOCHORDINAL = datetime.datetime.utcfromtimestamp(0).toordinal()
@@ -42,6 +49,8 @@ class tzutc(datetime.tzinfo):
     def __repr__(self):
         return "%s()" % self.__class__.__name__
 
+    __reduce__ = object.__reduce__
+
 class tzoffset(datetime.tzinfo):
 
     def __init__(self, name, offset):
@@ -69,6 +78,8 @@ class tzoffset(datetime.tzinfo):
                                `self._name`,
                                self._offset.days*86400+self._offset.seconds)
 
+    __reduce__ = object.__reduce__
+
 class tzlocal(datetime.tzinfo):
 
     _std_offset = datetime.timedelta(seconds=-time.timezone)
@@ -136,6 +147,8 @@ class tzlocal(datetime.tzinfo):
     def __repr__(self):
         return "%s()" % self.__class__.__name__
 
+    __reduce__ = object.__reduce__
+
 class _ttinfo(object):
     __slots__ = ["offset", "delta", "isdst", "abbr", "isstd", "isgmt"]
 
@@ -164,6 +177,17 @@ class _ttinfo(object):
     def __ne__(self, other):
         return not self.__eq__(other)
 
+    def __getstate__(self):
+        state = {}
+        for name in self.__slots__:
+            state[name] = getattr(self, name, None)
+        return state
+
+    def __setstate__(self, state):
+        for name in self.__slots__:
+            if name in state:
+                setattr(self, name, state[name])
+
 class tzfile(datetime.tzinfo):
 
     # http://www.twinsun.com/tz/tz-link.htm
@@ -171,12 +195,12 @@ class tzfile(datetime.tzinfo):
     
     def __init__(self, fileobj):
         if isinstance(fileobj, basestring):
-            self._s = fileobj
+            self._filename = fileobj
             fileobj = open(fileobj)
         elif hasattr(fileobj, "name"):
-            self._s = fileobj.name
+            self._filename = fileobj.name
         else:
-            self._s = `fileobj`
+            self._filename = `fileobj`
 
         # From tzfile(5):
         #
@@ -273,7 +297,7 @@ class tzfile(datetime.tzinfo):
 
         # Not used, for now
         if leapcnt:
-            leap = struct.unpack(">%dl" % leapcnt*2,
+            leap = struct.unpack(">%dl" % (leapcnt*2),
                                  fileobj.read(leapcnt*8))
 
         # Then there are tzh_ttisstdcnt standard/wall
@@ -305,11 +329,16 @@ class tzfile(datetime.tzinfo):
         # Build ttinfo list
         self._ttinfo_list = []
         for i in range(typecnt):
+            gmtoff, isdst, abbrind =  ttinfo[i]
+            # Round to full-minutes if that's not the case. Python's
+            # datetime doesn't accept sub-minute timezones. Check
+            # http://python.org/sf/1447945 for some information.
+            gmtoff = (gmtoff+30)//60*60
             tti = _ttinfo()
-            tti.offset = ttinfo[i][0]
+            tti.offset = gmtoff
-            tti.delta = datetime.timedelta(seconds=ttinfo[i][0])
+            tti.delta = datetime.timedelta(seconds=gmtoff)
-            tti.isdst = ttinfo[i][1]
+            tti.isdst = isdst
-            tti.abbr = abbr[ttinfo[i][2]:abbr.find('\x00', ttinfo[i][2])]
+            tti.abbr = abbr[abbrind:abbr.find('\x00', abbrind)]
             tti.isstd = (ttisstdcnt > i and isstd[i] != 0)
             tti.isgmt = (ttisgmtcnt > i and isgmt[i] != 0)
             self._ttinfo_list.append(tti)
@@ -409,7 +438,7 @@ class tzfile(datetime.tzinfo):
 
         # The documentation says that utcoffset()-dst() must
         # be constant for every dt.
-        return self._find_ttinfo(dt, laststd=1).delta-tti.delta
+        return tti.delta-self._find_ttinfo(dt, laststd=1).delta
 
         # An alternative for that would be:
         #
@@ -436,13 +465,21 @@ class tzfile(datetime.tzinfo):
 
 
     def __repr__(self):
-        return "%s(%s)" % (self.__class__.__name__, `self._s`)
+        return "%s(%s)" % (self.__class__.__name__, `self._filename`)
+
+    def __reduce__(self):
+        if not os.path.isfile(self._filename):
+            raise ValueError, "Unpickable %s class" % self.__class__.__name__
+        return (self.__class__, (self._filename,))
 
 class tzrange(datetime.tzinfo):
 
     def __init__(self, stdabbr, stdoffset=None,
                  dstabbr=None, dstoffset=None,
                  start=None, end=None):
+        global relativedelta
+        if not relativedelta:
+            from dateutil import relativedelta
         self._std_abbr = stdabbr
         self._dst_abbr = dstabbr
         if stdoffset is not None:
@@ -455,12 +492,12 @@ class tzrange(datetime.tzinfo):
             self._dst_offset = self._std_offset+datetime.timedelta(hours=+1)
         else:
             self._dst_offset = ZERO
-        if start is None:
+        if dstabbr and start is None:
             self._start_delta = relativedelta.relativedelta(
                     hours=+2, month=4, day=1, weekday=relativedelta.SU(+1))
         else:
             self._start_delta = start
-        if end is None:
+        if dstabbr and end is None:
             self._end_delta = relativedelta.relativedelta(
                     hours=+1, month=10, day=31, weekday=relativedelta.SU(-1))
         else:
@@ -487,7 +524,7 @@ class tzrange(datetime.tzinfo):
     def _isdst(self, dt):
         if not self._start_delta:
             return False
-        year = datetime.date(dt.year,1,1)
+        year = datetime.datetime(dt.year,1,1)
         start = year+self._start_delta
         end = year+self._end_delta
         dt = dt.replace(tzinfo=None)
@@ -512,16 +549,25 @@ class tzrange(datetime.tzinfo):
     def __repr__(self):
         return "%s(...)" % self.__class__.__name__
 
+    __reduce__ = object.__reduce__
 
 class tzstr(tzrange):
     
     def __init__(self, s):
+        global parser
+        if not parser:
+            from dateutil import parser
         self._s = s
 
         res = parser._parsetz(s)
         if res is None:
             raise ValueError, "unknown string format"
 
+        # Here we break the compatibility with the TZ variable handling.
+        # GMT-3 actually *means* the timezone -3.
+        if res.stdabbr in ("GMT", "UTC"):
+            res.stdoffset *= -1
+
         # We must initialize it first, since _delta() needs
         # _std_offset and _dst_offset set. Use False in start/end
         # to avoid building it two times.
@@ -529,6 +575,10 @@ class tzstr(tzrange):
                          res.dstabbr, res.dstoffset,
                          start=False, end=False)
 
+        if not res.dstabbr:
+            self._start_delta = None
+            self._end_delta = None
+        else:
             self._start_delta = self._delta(res.start)
             if self._start_delta:
                 self._end_delta = self._delta(res.end, isend=1)
@@ -646,9 +696,10 @@ class _tzicalvtz(datetime.tzinfo):
     def __repr__(self):
         return "<tzicalvtz %s>" % `self._tzid`
 
+    __reduce__ = object.__reduce__
+
 class tzical:
     def __init__(self, fileobj):
-        # XXX This should be fixed, but doesn't seem to be in our dateutil.
         global rrule
         if not rrule:
             from dateutil import rrule
@@ -672,9 +723,9 @@ class tzical:
         if tzid is None:
             keys = self._vtz.keys()
             if len(keys) == 0:
-                raise "no timezones defined"
+                raise ValueError, "no timezones defined"
             elif len(keys) > 1:
-                raise "more than one timezone available"
+                raise ValueError, "more than one timezone available"
             tzid = keys[0]
         return self._vtz.get(tzid)
 
@@ -711,6 +762,8 @@ class tzical:
             else:
                 i += 1
 
+        tzid = None
+        comps = []
         invtz = False
         comptype = None
         for line in lines:
@@ -753,10 +806,10 @@ class tzical:
                         if not founddtstart:
                             raise ValueError, \
                                   "mandatory DTSTART not found"
-                        if not tzoffsetfrom:
+                        if tzoffsetfrom is None:
                             raise ValueError, \
                                   "mandatory TZOFFSETFROM not found"
-                        if not tzoffsetto:
+                        if tzoffsetto is None:
                             raise ValueError, \
                                   "mandatory TZOFFSETFROM not found"
                         # Process component
@@ -817,10 +870,12 @@ class tzical:
     def __repr__(self):
         return "%s(%s)" % (self.__class__.__name__, `self._s`)
 
+if sys.platform != "win32":
     TZFILES = ["/etc/localtime", "localtime"]
     TZPATHS = ["/usr/share/zoneinfo", "/usr/lib/zoneinfo", "/etc/zoneinfo"]
-
+else:
-import os
+    TZFILES = []
+    TZPATHS = []
 
 def gettz(name=None):
     tz = None
@@ -829,7 +884,7 @@ def gettz(name=None):
             name = os.environ["TZ"]
         except KeyError:
             pass
-    if name is None:
+    if name is None or name == ":":
         for filepath in TZFILES:
             if not os.path.isabs(filepath):
                 filename = filepath
@@ -846,8 +901,16 @@ def gettz(name=None):
                 except (IOError, OSError, ValueError):
                     pass
         else:
-        if name and name[0] == ":":
+            tz = tzlocal()
+    else:
+        if name.startswith(":"):
             name = name[:-1]
+        if os.path.isabs(name):
+            if os.path.isfile(name):
+                tz = tzfile(name)
+            else:
+                tz = None
+        else:
             for path in TZPATHS:
                 filepath = os.path.join(path, name)
                 if not os.path.isfile(filepath):
@@ -860,6 +923,16 @@ def gettz(name=None):
                 except (IOError, OSError, ValueError):
                     pass
             else:
+                tz = None
+                if tzwin:
+                    try:
+                        tz = tzwin(name)
+                    except OSError:
+                        pass
+                if not tz:
+                    from dateutil.zoneinfo import gettz
+                    tz = gettz(name)
+                if not tz:
                     for c in name:
                         # name must have at least one offset to be a tzstr
                         if c in "0123456789":

plugins/Time/local/dateutil/tzwin.py

@@ -0,0 +1,180 @@
+# This code was originally contributed by Jeffrey Harris.
+import datetime
+import struct
+import _winreg
+
+__author__ = "Jeffrey Harris & Gustavo Niemeyer <gustavo@niemeyer.net>"
+
+__all__ = ["tzwin", "tzwinlocal"]
+
+ONEWEEK = datetime.timedelta(7)
+
+TZKEYNAMENT = r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones"
+TZKEYNAME9X = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Time Zones"
+TZLOCALKEYNAME = r"SYSTEM\CurrentControlSet\Control\TimeZoneInformation"
+
+def _settzkeyname():
+    global TZKEYNAME
+    handle = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
+    try:
+        _winreg.OpenKey(handle, TZKEYNAMENT).Close()
+        TZKEYNAME = TZKEYNAMENT
+    except WindowsError:
+        TZKEYNAME = TZKEYNAME9X
+    handle.Close()
+
+_settzkeyname()
+
+class tzwinbase(datetime.tzinfo):
+    """tzinfo class based on win32's timezones available in the registry."""
+
+    def utcoffset(self, dt):
+        if self._isdst(dt):
+            return datetime.timedelta(minutes=self._dstoffset)
+        else:
+            return datetime.timedelta(minutes=self._stdoffset)
+
+    def dst(self, dt):
+        if self._isdst(dt):
+            minutes = self._dstoffset - self._stdoffset
+            return datetime.timedelta(minutes=minutes)
+        else:
+            return datetime.timedelta(0)
+        
+    def tzname(self, dt):
+        if self._isdst(dt):
+            return self._dstname
+        else:
+            return self._stdname
+
+    def list():
+        """Return a list of all time zones known to the system."""
+        handle = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
+        tzkey = _winreg.OpenKey(handle, TZKEYNAME)
+        result = [_winreg.EnumKey(tzkey, i)
+                  for i in range(_winreg.QueryInfoKey(tzkey)[0])]
+        tzkey.Close()
+        handle.Close()
+        return result
+    list = staticmethod(list)
+
+    def display(self):
+        return self._display
+    
+    def _isdst(self, dt):
+        dston = picknthweekday(dt.year, self._dstmonth, self._dstdayofweek,
+                               self._dsthour, self._dstminute,
+                               self._dstweeknumber)
+        dstoff = picknthweekday(dt.year, self._stdmonth, self._stddayofweek,
+                                self._stdhour, self._stdminute,
+                                self._stdweeknumber)
+        if dston < dstoff:
+            return dston <= dt.replace(tzinfo=None) < dstoff
+        else:
+            return not dstoff <= dt.replace(tzinfo=None) < dston
+
+
+class tzwin(tzwinbase):
+
+    def __init__(self, name):
+        self._name = name
+
+        handle = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
+        tzkey = _winreg.OpenKey(handle, "%s\%s" % (TZKEYNAME, name))
+        keydict = valuestodict(tzkey)
+        tzkey.Close()
+        handle.Close()
+
+        self._stdname = keydict["Std"].encode("iso-8859-1")
+        self._dstname = keydict["Dlt"].encode("iso-8859-1")
+
+        self._display = keydict["Display"]
+        
+        # See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
+        tup = struct.unpack("=3l16h", keydict["TZI"])
+        self._stdoffset = -tup[0]-tup[1]         # Bias + StandardBias * -1
+        self._dstoffset = self._stdoffset-tup[2] # + DaylightBias * -1
+        
+        (self._stdmonth,
+         self._stddayofweek,  # Sunday = 0
+         self._stdweeknumber, # Last = 5
+         self._stdhour,
+         self._stdminute) = tup[4:9]
+
+        (self._dstmonth,
+         self._dstdayofweek,  # Sunday = 0
+         self._dstweeknumber, # Last = 5
+         self._dsthour,
+         self._dstminute) = tup[12:17]
+
+    def __repr__(self):
+        return "tzwin(%s)" % repr(self._name)
+
+    def __reduce__(self):
+        return (self.__class__, (self._name,))
+
+
+class tzwinlocal(tzwinbase):
+    
+    def __init__(self):
+
+        handle = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
+
+        tzlocalkey = _winreg.OpenKey(handle, TZLOCALKEYNAME)
+        keydict = valuestodict(tzlocalkey)
+        tzlocalkey.Close()
+
+        self._stdname = keydict["StandardName"].encode("iso-8859-1")
+        self._dstname = keydict["DaylightName"].encode("iso-8859-1")
+
+        try:
+            tzkey = _winreg.OpenKey(handle, "%s\%s"%(TZKEYNAME, self._stdname))
+            _keydict = valuestodict(tzkey)
+            self._display = _keydict["Display"]
+            tzkey.Close()
+        except OSError:
+            self._display = None
+
+        handle.Close()
+        
+        self._stdoffset = -keydict["Bias"]-keydict["StandardBias"]
+        self._dstoffset = self._stdoffset-keydict["DaylightBias"]
+
+
+        # See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
+        tup = struct.unpack("=8h", keydict["StandardStart"])
+
+        (self._stdmonth,
+         self._stddayofweek,  # Sunday = 0
+         self._stdweeknumber, # Last = 5
+         self._stdhour,
+         self._stdminute) = tup[1:6]
+
+        tup = struct.unpack("=8h", keydict["DaylightStart"])
+
+        (self._dstmonth,
+         self._dstdayofweek,  # Sunday = 0
+         self._dstweeknumber, # Last = 5
+         self._dsthour,
+         self._dstminute) = tup[1:6]
+
+    def __reduce__(self):
+        return (self.__class__, ())
+
+def picknthweekday(year, month, dayofweek, hour, minute, whichweek):
+    """dayofweek == 0 means Sunday, whichweek 5 means last instance"""
+    first = datetime.datetime(year, month, 1, hour, minute)
+    weekdayone = first.replace(day=((dayofweek-first.isoweekday())%7+1))
+    for n in xrange(whichweek):
+        dt = weekdayone+(whichweek-n)*ONEWEEK
+        if dt.month == month:
+            return dt
+
+def valuestodict(key):
+    """Convert a registry key's values to a dictionary."""
+    dict = {}
+    size = _winreg.QueryInfoKey(key)[1]
+    for i in range(size):
+        data = _winreg.EnumValue(key, i)
+        dict[data[0]] = data[1]
+    return dict

plugins/Time/local/dateutil/zoneinfo/__init__.py

@@ -0,0 +1,87 @@
+"""
+Copyright (c) 2003-2005  Gustavo Niemeyer <gustavo@niemeyer.net>
+
+This module offers extensions to the standard python 2.3+
+datetime module.
+"""
+from dateutil.tz import tzfile
+from tarfile import TarFile
+import os
+
+__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
+__license__ = "PSF License"
+
+__all__ = ["setcachesize", "gettz", "rebuild"]
+
+CACHE = []
+CACHESIZE = 10
+
+class tzfile(tzfile):
+    def __reduce__(self):
+        return (gettz, (self._filename,))
+
+def getzoneinfofile():
+    filenames = os.listdir(os.path.join(os.path.dirname(__file__)))
+    filenames.sort()
+    filenames.reverse()
+    for entry in filenames:
+        if entry.startswith("zoneinfo") and ".tar." in entry:
+            return os.path.join(os.path.dirname(__file__), entry)
+    return None
+
+ZONEINFOFILE = getzoneinfofile()
+
+del getzoneinfofile
+
+def setcachesize(size):
+    global CACHESIZE, CACHE
+    CACHESIZE = size
+    del CACHE[size:]
+
+def gettz(name):
+    tzinfo = None
+    if ZONEINFOFILE:
+        for cachedname, tzinfo in CACHE:
+            if cachedname == name:
+                break
+        else:
+            tf = TarFile.open(ZONEINFOFILE)
+            try:
+                zonefile = tf.extractfile(name)
+            except KeyError:
+                tzinfo = None
+            else:
+                tzinfo = tzfile(zonefile)
+            tf.close()
+            CACHE.insert(0, (name, tzinfo))
+            del CACHE[CACHESIZE:]
+    return tzinfo
+
+def rebuild(filename, tag=None, format="gz"):
+    import tempfile, shutil
+    tmpdir = tempfile.mkdtemp()
+    zonedir = os.path.join(tmpdir, "zoneinfo")
+    moduledir = os.path.dirname(__file__)
+    if tag: tag = "-"+tag
+    targetname = "zoneinfo%s.tar.%s" % (tag, format)
+    try:
+        tf = TarFile.open(filename)
+        for name in tf.getnames():
+            if not (name.endswith(".sh") or
+                    name.endswith(".tab") or
+                    name == "leapseconds"):
+                tf.extract(name, tmpdir)
+                filepath = os.path.join(tmpdir, name)
+                os.system("zic -d %s %s" % (zonedir, filepath))
+        tf.close()
+        target = os.path.join(moduledir, targetname)
+        for entry in os.listdir(moduledir):
+            if entry.startswith("zoneinfo") and ".tar." in entry:
+                os.unlink(os.path.join(moduledir, entry))
+        tf = TarFile.open(target, "w:%s" % format)
+        for entry in os.listdir(zonedir):
+            entrypath = os.path.join(zonedir, entry)
+            tf.add(entrypath, entry)
+        tf.close()
+    finally:
+        shutil.rmtree(tmpdir)