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authorJames Taylor <user234683@users.noreply.github.com>2019-09-06 16:31:13 -0700
committerJames Taylor <user234683@users.noreply.github.com>2019-09-06 16:31:13 -0700
commit3d57e14df7ba5f14a634295caf3b2e60da50bfe2 (patch)
tree4903bcb79a49ad714a1a9129765b9545405c9978 /python/dateutil/tz/win.py
parentac32b24b2a011292b704a3f27e8fd08a7ae9424b (diff)
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Remove windows python distribution from repo and add requirements.txt
Diffstat (limited to 'python/dateutil/tz/win.py')
-rw-r--r--python/dateutil/tz/win.py332
1 files changed, 0 insertions, 332 deletions
diff --git a/python/dateutil/tz/win.py b/python/dateutil/tz/win.py
deleted file mode 100644
index 36a1c26..0000000
--- a/python/dateutil/tz/win.py
+++ /dev/null
@@ -1,332 +0,0 @@
-# This code was originally contributed by Jeffrey Harris.
-import datetime
-import struct
-
-from six.moves import winreg
-from six import text_type
-
-try:
- import ctypes
- from ctypes import wintypes
-except ValueError:
- # ValueError is raised on non-Windows systems for some horrible reason.
- raise ImportError("Running tzwin on non-Windows system")
-
-from ._common import tzrangebase
-
-__all__ = ["tzwin", "tzwinlocal", "tzres"]
-
-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():
- handle = winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE)
- try:
- winreg.OpenKey(handle, TZKEYNAMENT).Close()
- TZKEYNAME = TZKEYNAMENT
- except WindowsError:
- TZKEYNAME = TZKEYNAME9X
- handle.Close()
- return TZKEYNAME
-
-
-TZKEYNAME = _settzkeyname()
-
-
-class tzres(object):
- """
- Class for accessing `tzres.dll`, which contains timezone name related
- resources.
-
- .. versionadded:: 2.5.0
- """
- p_wchar = ctypes.POINTER(wintypes.WCHAR) # Pointer to a wide char
-
- def __init__(self, tzres_loc='tzres.dll'):
- # Load the user32 DLL so we can load strings from tzres
- user32 = ctypes.WinDLL('user32')
-
- # Specify the LoadStringW function
- user32.LoadStringW.argtypes = (wintypes.HINSTANCE,
- wintypes.UINT,
- wintypes.LPWSTR,
- ctypes.c_int)
-
- self.LoadStringW = user32.LoadStringW
- self._tzres = ctypes.WinDLL(tzres_loc)
- self.tzres_loc = tzres_loc
-
- def load_name(self, offset):
- """
- Load a timezone name from a DLL offset (integer).
-
- >>> from dateutil.tzwin import tzres
- >>> tzr = tzres()
- >>> print(tzr.load_name(112))
- 'Eastern Standard Time'
-
- :param offset:
- A positive integer value referring to a string from the tzres dll.
-
- ..note:
- Offsets found in the registry are generally of the form
- `@tzres.dll,-114`. The offset in this case if 114, not -114.
-
- """
- resource = self.p_wchar()
- lpBuffer = ctypes.cast(ctypes.byref(resource), wintypes.LPWSTR)
- nchar = self.LoadStringW(self._tzres._handle, offset, lpBuffer, 0)
- return resource[:nchar]
-
- def name_from_string(self, tzname_str):
- """
- Parse strings as returned from the Windows registry into the time zone
- name as defined in the registry.
-
- >>> from dateutil.tzwin import tzres
- >>> tzr = tzres()
- >>> print(tzr.name_from_string('@tzres.dll,-251'))
- 'Dateline Daylight Time'
- >>> print(tzr.name_from_string('Eastern Standard Time'))
- 'Eastern Standard Time'
-
- :param tzname_str:
- A timezone name string as returned from a Windows registry key.
-
- :return:
- Returns the localized timezone string from tzres.dll if the string
- is of the form `@tzres.dll,-offset`, else returns the input string.
- """
- if not tzname_str.startswith('@'):
- return tzname_str
-
- name_splt = tzname_str.split(',-')
- try:
- offset = int(name_splt[1])
- except:
- raise ValueError("Malformed timezone string.")
-
- return self.load_name(offset)
-
-
-class tzwinbase(tzrangebase):
- """tzinfo class based on win32's timezones available in the registry."""
- def __init__(self):
- raise NotImplementedError('tzwinbase is an abstract base class')
-
- def __eq__(self, other):
- # Compare on all relevant dimensions, including name.
- if not isinstance(other, tzwinbase):
- return NotImplemented
-
- return (self._std_offset == other._std_offset and
- self._dst_offset == other._dst_offset and
- self._stddayofweek == other._stddayofweek and
- self._dstdayofweek == other._dstdayofweek and
- self._stdweeknumber == other._stdweeknumber and
- self._dstweeknumber == other._dstweeknumber and
- self._stdhour == other._stdhour and
- self._dsthour == other._dsthour and
- self._stdminute == other._stdminute and
- self._dstminute == other._dstminute and
- self._std_abbr == other._std_abbr and
- self._dst_abbr == other._dst_abbr)
-
- @staticmethod
- def list():
- """Return a list of all time zones known to the system."""
- with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
- with winreg.OpenKey(handle, TZKEYNAME) as tzkey:
- result = [winreg.EnumKey(tzkey, i)
- for i in range(winreg.QueryInfoKey(tzkey)[0])]
- return result
-
- def display(self):
- return self._display
-
- def transitions(self, year):
- """
- For a given year, get the DST on and off transition times, expressed
- always on the standard time side. For zones with no transitions, this
- function returns ``None``.
-
- :param year:
- The year whose transitions you would like to query.
-
- :return:
- Returns a :class:`tuple` of :class:`datetime.datetime` objects,
- ``(dston, dstoff)`` for zones with an annual DST transition, or
- ``None`` for fixed offset zones.
- """
-
- if not self.hasdst:
- return None
-
- dston = picknthweekday(year, self._dstmonth, self._dstdayofweek,
- self._dsthour, self._dstminute,
- self._dstweeknumber)
-
- dstoff = picknthweekday(year, self._stdmonth, self._stddayofweek,
- self._stdhour, self._stdminute,
- self._stdweeknumber)
-
- # Ambiguous dates default to the STD side
- dstoff -= self._dst_base_offset
-
- return dston, dstoff
-
- def _get_hasdst(self):
- return self._dstmonth != 0
-
- @property
- def _dst_base_offset(self):
- return self._dst_base_offset_
-
-
-class tzwin(tzwinbase):
-
- def __init__(self, name):
- self._name = name
-
- # multiple contexts only possible in 2.7 and 3.1, we still support 2.6
- with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
- tzkeyname = text_type("{kn}\\{name}").format(kn=TZKEYNAME, name=name)
- with winreg.OpenKey(handle, tzkeyname) as tzkey:
- keydict = valuestodict(tzkey)
-
- self._std_abbr = keydict["Std"]
- self._dst_abbr = keydict["Dlt"]
-
- self._display = keydict["Display"]
-
- # See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
- tup = struct.unpack("=3l16h", keydict["TZI"])
- stdoffset = -tup[0]-tup[1] # Bias + StandardBias * -1
- dstoffset = stdoffset-tup[2] # + DaylightBias * -1
- self._std_offset = datetime.timedelta(minutes=stdoffset)
- self._dst_offset = datetime.timedelta(minutes=dstoffset)
-
- # for the meaning see the win32 TIME_ZONE_INFORMATION structure docs
- # http://msdn.microsoft.com/en-us/library/windows/desktop/ms725481(v=vs.85).aspx
- (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]
-
- self._dst_base_offset_ = self._dst_offset - self._std_offset
- self.hasdst = self._get_hasdst()
-
- def __repr__(self):
- return "tzwin(%s)" % repr(self._name)
-
- def __reduce__(self):
- return (self.__class__, (self._name,))
-
-
-class tzwinlocal(tzwinbase):
- def __init__(self):
- with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
- with winreg.OpenKey(handle, TZLOCALKEYNAME) as tzlocalkey:
- keydict = valuestodict(tzlocalkey)
-
- self._std_abbr = keydict["StandardName"]
- self._dst_abbr = keydict["DaylightName"]
-
- try:
- tzkeyname = text_type('{kn}\\{sn}').format(kn=TZKEYNAME,
- sn=self._std_abbr)
- with winreg.OpenKey(handle, tzkeyname) as tzkey:
- _keydict = valuestodict(tzkey)
- self._display = _keydict["Display"]
- except OSError:
- self._display = None
-
- stdoffset = -keydict["Bias"]-keydict["StandardBias"]
- dstoffset = stdoffset-keydict["DaylightBias"]
-
- self._std_offset = datetime.timedelta(minutes=stdoffset)
- self._dst_offset = datetime.timedelta(minutes=dstoffset)
-
- # For reasons unclear, in this particular key, the day of week has been
- # moved to the END of the SYSTEMTIME structure.
- tup = struct.unpack("=8h", keydict["StandardStart"])
-
- (self._stdmonth,
- self._stdweeknumber, # Last = 5
- self._stdhour,
- self._stdminute) = tup[1:5]
-
- self._stddayofweek = tup[7]
-
- tup = struct.unpack("=8h", keydict["DaylightStart"])
-
- (self._dstmonth,
- self._dstweeknumber, # Last = 5
- self._dsthour,
- self._dstminute) = tup[1:5]
-
- self._dstdayofweek = tup[7]
-
- self._dst_base_offset_ = self._dst_offset - self._std_offset
- self.hasdst = self._get_hasdst()
-
- def __repr__(self):
- return "tzwinlocal()"
-
- def __str__(self):
- # str will return the standard name, not the daylight name.
- return "tzwinlocal(%s)" % repr(self._std_abbr)
-
- 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)
-
- # This will work if dayofweek is ISO weekday (1-7) or Microsoft-style (0-6),
- # Because 7 % 7 = 0
- weekdayone = first.replace(day=((dayofweek - first.isoweekday()) % 7) + 1)
- wd = weekdayone + ((whichweek - 1) * ONEWEEK)
- if (wd.month != month):
- wd -= ONEWEEK
-
- return wd
-
-
-def valuestodict(key):
- """Convert a registry key's values to a dictionary."""
- dout = {}
- size = winreg.QueryInfoKey(key)[1]
- tz_res = None
-
- for i in range(size):
- key_name, value, dtype = winreg.EnumValue(key, i)
- if dtype == winreg.REG_DWORD or dtype == winreg.REG_DWORD_LITTLE_ENDIAN:
- # If it's a DWORD (32-bit integer), it's stored as unsigned - convert
- # that to a proper signed integer
- if value & (1 << 31):
- value = value - (1 << 32)
- elif dtype == winreg.REG_SZ:
- # If it's a reference to the tzres DLL, load the actual string
- if value.startswith('@tzres'):
- tz_res = tz_res or tzres()
- value = tz_res.name_from_string(value)
-
- value = value.rstrip('\x00') # Remove trailing nulls
-
- dout[key_name] = value
-
- return dout