commit d24f57a7b56baa02a04e912b21a7eeb0d37590b4
Author: Arturo Filastò <art...@filasto.net>
Date: Tue Jul 26 18:31:14 2016 +0200
Import the needed dateutil modules
---
ooni/contrib/__init__.py | 1 +
ooni/contrib/croniter.py | 4 +-
ooni/contrib/dateutil/__init__.py | 0
ooni/contrib/dateutil/relativedelta.py | 539 +++++++++++++
ooni/contrib/dateutil/tz/__init__.py | 4 +
ooni/contrib/dateutil/tz/_common.py | 100 +++
ooni/contrib/dateutil/tz/tz.py | 1339 ++++++++++++++++++++++++++++++++
ooni/contrib/dateutil/tz/win.py | 354 +++++++++
8 files changed, 2339 insertions(+), 2 deletions(-)
diff --git a/ooni/contrib/__init__.py b/ooni/contrib/__init__.py
index e69de29..50b6b54 100644
--- a/ooni/contrib/__init__.py
+++ b/ooni/contrib/__init__.py
@@ -0,0 +1 @@
+from ._crontab import CronTab
diff --git a/ooni/contrib/croniter.py b/ooni/contrib/croniter.py
index 327326f..5864603 100644
--- a/ooni/contrib/croniter.py
+++ b/ooni/contrib/croniter.py
@@ -5,8 +5,8 @@ from __future__ import absolute_import, print_function
import re
from time import time
import datetime
-from dateutil.relativedelta import relativedelta
-from dateutil.tz import tzutc
+from .dateutil.relativedelta import relativedelta
+from .dateutil.tz import tzutc
search_re = re.compile(r'^([^-]+)-([^-/]+)(/(.*))?$')
only_int_re = re.compile(r'^\d+$')
diff --git a/ooni/contrib/dateutil/__init__.py
b/ooni/contrib/dateutil/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/ooni/contrib/dateutil/relativedelta.py
b/ooni/contrib/dateutil/relativedelta.py
new file mode 100644
index 0000000..c1c9cc0
--- /dev/null
+++ b/ooni/contrib/dateutil/relativedelta.py
@@ -0,0 +1,539 @@
+# -*- coding: utf-8 -*-
+import datetime
+import calendar
+
+import operator
+from math import copysign
+
+from six import integer_types
+from warnings import warn
+
+__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
+
+
+class weekday(object):
+ __slots__ = ["weekday", "n"]
+
+ def __init__(self, weekday, n=None):
+ self.weekday = weekday
+ self.n = n
+
+ def __call__(self, n):
+ if n == self.n:
+ return self
+ else:
+ return self.__class__(self.weekday, n)
+
+ def __eq__(self, other):
+ try:
+ if self.weekday != other.weekday or self.n != other.n:
+ return False
+ except AttributeError:
+ return False
+ return True
+
+ def __repr__(self):
+ s = ("MO", "TU", "WE", "TH", "FR", "SA", "SU")[self.weekday]
+ if not self.n:
+ return s
+ else:
+ return "%s(%+d)" % (s, self.n)
+
+MO, TU, WE, TH, FR, SA, SU = weekdays = tuple([weekday(x) for x in range(7)])
+
+
+class relativedelta(object):
+ """
+ The relativedelta type is based on the specification of the excellent
+ work done by M.-A. Lemburg in his
+ `mx.DateTime <http://www.egenix.com/files/python/mxDateTime.html>`_
extension.
+ However, notice that this type does *NOT* implement the same algorithm as
+ his work. Do *NOT* expect it to behave like mx.DateTime's counterpart.
+
+ There are two different ways to build a relativedelta instance. The
+ first one is passing it two date/datetime classes::
+
+ relativedelta(datetime1, datetime2)
+
+ The second one is passing it any number of the following keyword
arguments::
+
+ relativedelta(arg1=x,arg2=y,arg3=z...)
+
+ year, month, day, hour, minute, second, microsecond:
+ Absolute information (argument is singular); adding or subtracting
a
+ relativedelta with absolute information does not perform an
aritmetic
+ operation, but rather REPLACES the corresponding value in the
+ original datetime with the value(s) in relativedelta.
+
+ years, months, weeks, days, hours, minutes, seconds, microseconds:
+ Relative information, may be negative (argument is plural); adding
+ or subtracting a relativedelta with relative information performs
+ the corresponding aritmetic operation on the original datetime
value
+ with the information in the relativedelta.
+
+ weekday:
+ One of the weekday instances (MO, TU, etc). These instances may
+ receive a parameter N, specifying the Nth weekday, which could
+ be positive or negative (like MO(+1) or MO(-2). Not specifying
+ it is the same as specifying +1. You can also use an integer,
+ where 0=MO.
+
+ leapdays:
+ Will add given days to the date found, if year is a leap
+ year, and the date found is post 28 of february.
+
+ yearday, nlyearday:
+ Set the yearday or the non-leap year day (jump leap days).
+ These are converted to day/month/leapdays information.
+
+ Here is the behavior of operations with relativedelta:
+
+ 1. Calculate the absolute year, using the 'year' argument, or the
+ original datetime year, if the argument is not present.
+
+ 2. Add the relative 'years' argument to the absolute year.
+
+ 3. Do steps 1 and 2 for month/months.
+
+ 4. Calculate the absolute day, using the 'day' argument, or the
+ original datetime day, if the argument is not present. Then,
+ subtract from the day until it fits in the year and month
+ found after their operations.
+
+ 5. Add the relative 'days' argument to the absolute day. Notice
+ that the 'weeks' argument is multiplied by 7 and added to
+ 'days'.
+
+ 6. Do steps 1 and 2 for hour/hours, minute/minutes, second/seconds,
+ microsecond/microseconds.
+
+ 7. If the 'weekday' argument is present, calculate the weekday,
+ with the given (wday, nth) tuple. wday is the index of the
+ weekday (0-6, 0=Mon), and nth is the number of weeks to add
+ forward or backward, depending on its signal. Notice that if
+ the calculated date is already Monday, for example, using
+ (0, 1) or (0, -1) won't change the day.
+ """
+
+ def __init__(self, dt1=None, dt2=None,
+ years=0, months=0, days=0, leapdays=0, weeks=0,
+ hours=0, minutes=0, seconds=0, microseconds=0,
+ year=None, month=None, day=None, weekday=None,
+ yearday=None, nlyearday=None,
+ hour=None, minute=None, second=None, microsecond=None):
+
+ # Check for non-integer values in integer-only quantities
+ if any(x is not None and x != int(x) for x in (years, months)):
+ raise ValueError("Non-integer years and months are "
+ "ambiguous and not currently supported.")
+
+ if dt1 and dt2:
+ # datetime is a subclass of date. So both must be date
+ if not (isinstance(dt1, datetime.date) and
+ isinstance(dt2, datetime.date)):
+ raise TypeError("relativedelta only diffs datetime/date")
+
+ # We allow two dates, or two datetimes, so we coerce them to be
+ # of the same type
+ if (isinstance(dt1, datetime.datetime) !=
+ isinstance(dt2, datetime.datetime)):
+ if not isinstance(dt1, datetime.datetime):
+ dt1 = datetime.datetime.fromordinal(dt1.toordinal())
+ elif not isinstance(dt2, datetime.datetime):
+ dt2 = datetime.datetime.fromordinal(dt2.toordinal())
+
+ self.years = 0
+ self.months = 0
+ self.days = 0
+ self.leapdays = 0
+ self.hours = 0
+ self.minutes = 0
+ self.seconds = 0
+ self.microseconds = 0
+ self.year = None
+ self.month = None
+ self.day = None
+ self.weekday = None
+ self.hour = None
+ self.minute = None
+ self.second = None
+ self.microsecond = None
+ self._has_time = 0
+
+ # Get year / month delta between the two
+ months = (dt1.year - dt2.year) * 12 + (dt1.month - dt2.month)
+ self._set_months(months)
+
+ # Remove the year/month delta so the timedelta is just well-defined
+ # time units (seconds, days and microseconds)
+ dtm = self.__radd__(dt2)
+
+ # If we've overshot our target, make an adjustment
+ if dt1 < dt2:
+ compare = operator.gt
+ increment = 1
+ else:
+ compare = operator.lt
+ increment = -1
+
+ while compare(dt1, dtm):
+ months += increment
+ self._set_months(months)
+ dtm = self.__radd__(dt2)
+
+ # Get the timedelta between the "months-adjusted" date and dt1
+ delta = dt1 - dtm
+ self.seconds = delta.seconds + delta.days * 86400
+ self.microseconds = delta.microseconds
+ else:
+ # Relative information
+ self.years = years
+ self.months = months
+ self.days = days + weeks * 7
+ self.leapdays = leapdays
+ self.hours = hours
+ self.minutes = minutes
+ self.seconds = seconds
+ self.microseconds = microseconds
+
+ # Absolute information
+ self.year = year
+ self.month = month
+ self.day = day
+ self.hour = hour
+ self.minute = minute
+ self.second = second
+ self.microsecond = microsecond
+
+ if any(x is not None and int(x) != x
+ for x in (year, month, day, hour,
+ minute, second, microsecond)):
+ # For now we'll deprecate floats - later it'll be an error.
+ warn("Non-integer value passed as absolute information. " +
+ "This is not a well-defined condition and will raise " +
+ "errors in future versions.", DeprecationWarning)
+
+
+ if isinstance(weekday, integer_types):
+ self.weekday = weekdays[weekday]
+ else:
+ self.weekday = weekday
+
+ yday = 0
+ if nlyearday:
+ yday = nlyearday
+ elif yearday:
+ yday = yearday
+ if yearday > 59:
+ self.leapdays = -1
+ if yday:
+ ydayidx = [31, 59, 90, 120, 151, 181, 212,
+ 243, 273, 304, 334, 366]
+ for idx, ydays in enumerate(ydayidx):
+ if yday <= ydays:
+ self.month = idx+1
+ if idx == 0:
+ self.day = yday
+ else:
+ self.day = yday-ydayidx[idx-1]
+ break
+ else:
+ raise ValueError("invalid year day (%d)" % yday)
+
+ self._fix()
+
+ def _fix(self):
+ if abs(self.microseconds) > 999999:
+ s = _sign(self.microseconds)
+ div, mod = divmod(self.microseconds * s, 1000000)
+ self.microseconds = mod * s
+ self.seconds += div * s
+ if abs(self.seconds) > 59:
+ s = _sign(self.seconds)
+ div, mod = divmod(self.seconds * s, 60)
+ self.seconds = mod * s
+ self.minutes += div * s
+ if abs(self.minutes) > 59:
+ s = _sign(self.minutes)
+ div, mod = divmod(self.minutes * s, 60)
+ self.minutes = mod * s
+ self.hours += div * s
+ if abs(self.hours) > 23:
+ s = _sign(self.hours)
+ div, mod = divmod(self.hours * s, 24)
+ self.hours = mod * s
+ self.days += div * s
+ if abs(self.months) > 11:
+ s = _sign(self.months)
+ div, mod = divmod(self.months * s, 12)
+ self.months = mod * s
+ self.years += div * s
+ if (self.hours or self.minutes or self.seconds or self.microseconds
+ or self.hour is not None or self.minute is not None or
+ self.second is not None or self.microsecond is not None):
+ self._has_time = 1
+ else:
+ self._has_time = 0
+
+ @property
+ def weeks(self):
+ return self.days // 7
+ @weeks.setter
+ def weeks(self, value):
+ self.days = self.days - (self.weeks * 7) + value * 7
+
+ def _set_months(self, months):
+ self.months = months
+ if abs(self.months) > 11:
+ s = _sign(self.months)
+ div, mod = divmod(self.months * s, 12)
+ self.months = mod * s
+ self.years = div * s
+ else:
+ self.years = 0
+
+ def normalized(self):
+ """
+ Return a version of this object represented entirely using integer
+ values for the relative attributes.
+
+ >>> relativedelta(days=1.5, hours=2).normalized()
+ relativedelta(days=1, hours=14)
+
+ :return:
+ Returns a :class:`dateutil.relativedelta.relativedelta` object.
+ """
+ # Cascade remainders down (rounding each to roughly nearest
microsecond)
+ days = int(self.days)
+
+ hours_f = round(self.hours + 24 * (self.days - days), 11)
+ hours = int(hours_f)
+
+ minutes_f = round(self.minutes + 60 * (hours_f - hours), 10)
+ minutes = int(minutes_f)
+
+ seconds_f = round(self.seconds + 60 * (minutes_f - minutes), 8)
+ seconds = int(seconds_f)
+
+ microseconds = round(self.microseconds + 1e6 * (seconds_f - seconds))
+
+ # Constructor carries overflow back up with call to _fix()
+ return self.__class__(years=self.years, months=self.months,
+ days=days, hours=hours, minutes=minutes,
+ seconds=seconds, microseconds=microseconds,
+ leapdays=self.leapdays, year=self.year,
+ month=self.month, day=self.day,
+ weekday=self.weekday, hour=self.hour,
+ minute=self.minute, second=self.second,
+ microsecond=self.microsecond)
+
+ def __add__(self, other):
+ if isinstance(other, relativedelta):
+ return self.__class__(years=other.years + self.years,
+ months=other.months + self.months,
+ days=other.days + self.days,
+ hours=other.hours + self.hours,
+ minutes=other.minutes + self.minutes,
+ seconds=other.seconds + self.seconds,
+ microseconds=(other.microseconds +
+ self.microseconds),
+ leapdays=other.leapdays or self.leapdays,
+ year=other.year or self.year,
+ month=other.month or self.month,
+ day=other.day or self.day,
+ weekday=other.weekday or self.weekday,
+ hour=other.hour or self.hour,
+ minute=other.minute or self.minute,
+ second=other.second or self.second,
+ microsecond=(other.microsecond or
+ self.microsecond))
+ if not isinstance(other, datetime.date):
+ return NotImplemented
+ elif self._has_time and not isinstance(other, datetime.datetime):
+ other = datetime.datetime.fromordinal(other.toordinal())
+ year = (self.year or other.year)+self.years
+ month = self.month or other.month
+ if self.months:
+ assert 1 <= abs(self.months) <= 12
+ month += self.months
+ if month > 12:
+ year += 1
+ month -= 12
+ elif month < 1:
+ year -= 1
+ month += 12
+ day = min(calendar.monthrange(year, month)[1],
+ self.day or other.day)
+ repl = {"year": year, "month": month, "day": day}
+ for attr in ["hour", "minute", "second", "microsecond"]:
+ value = getattr(self, attr)
+ if value is not None:
+ repl[attr] = value
+ days = self.days
+ if self.leapdays and month > 2 and calendar.isleap(year):
+ days += self.leapdays
+ ret = (other.replace(**repl)
+ + datetime.timedelta(days=days,
+ hours=self.hours,
+ minutes=self.minutes,
+ seconds=self.seconds,
+ microseconds=self.microseconds))
+ if self.weekday:
+ weekday, nth = self.weekday.weekday, self.weekday.n or 1
+ jumpdays = (abs(nth) - 1) * 7
+ if nth > 0:
+ jumpdays += (7 - ret.weekday() + weekday) % 7
+ else:
+ jumpdays += (ret.weekday() - weekday) % 7
+ jumpdays *= -1
+ ret += datetime.timedelta(days=jumpdays)
+ return ret
+
+ def __radd__(self, other):
+ return self.__add__(other)
+
+ def __rsub__(self, other):
+ return self.__neg__().__radd__(other)
+
+ def __sub__(self, other):
+ if not isinstance(other, relativedelta):
+ return NotImplemented # In case the other object defines __rsub__
+ return self.__class__(years=self.years - other.years,
+ months=self.months - other.months,
+ days=self.days - other.days,
+ hours=self.hours - other.hours,
+ minutes=self.minutes - other.minutes,
+ seconds=self.seconds - other.seconds,
+ microseconds=self.microseconds -
other.microseconds,
+ leapdays=self.leapdays or other.leapdays,
+ year=self.year or other.year,
+ month=self.month or other.month,
+ day=self.day or other.day,
+ weekday=self.weekday or other.weekday,
+ hour=self.hour or other.hour,
+ minute=self.minute or other.minute,
+ second=self.second or other.second,
+ microsecond=self.microsecond or other.microsecond)
+
+ def __neg__(self):
+ return self.__class__(years=-self.years,
+ months=-self.months,
+ days=-self.days,
+ hours=-self.hours,
+ minutes=-self.minutes,
+ seconds=-self.seconds,
+ microseconds=-self.microseconds,
+ leapdays=self.leapdays,
+ year=self.year,
+ month=self.month,
+ day=self.day,
+ weekday=self.weekday,
+ hour=self.hour,
+ minute=self.minute,
+ second=self.second,
+ microsecond=self.microsecond)
+
+ def __bool__(self):
+ return not (not self.years and
+ not self.months and
+ not self.days and
+ not self.hours and
+ not self.minutes and
+ not self.seconds and
+ not self.microseconds and
+ not self.leapdays and
+ self.year is None and
+ self.month is None and
+ self.day is None and
+ self.weekday is None and
+ self.hour is None and
+ self.minute is None and
+ self.second is None and
+ self.microsecond is None)
+ # Compatibility with Python 2.x
+ __nonzero__ = __bool__
+
+ def __mul__(self, other):
+ try:
+ f = float(other)
+ except TypeError:
+ return NotImplemented
+
+ return self.__class__(years=int(self.years * f),
+ months=int(self.months * f),
+ days=int(self.days * f),
+ hours=int(self.hours * f),
+ minutes=int(self.minutes * f),
+ seconds=int(self.seconds * f),
+ microseconds=int(self.microseconds * f),
+ leapdays=self.leapdays,
+ year=self.year,
+ month=self.month,
+ day=self.day,
+ weekday=self.weekday,
+ hour=self.hour,
+ minute=self.minute,
+ second=self.second,
+ microsecond=self.microsecond)
+
+ __rmul__ = __mul__
+
+ def __eq__(self, other):
+ if not isinstance(other, relativedelta):
+ return NotImplemented
+ if self.weekday or other.weekday:
+ if not self.weekday or not other.weekday:
+ return False
+ if self.weekday.weekday != other.weekday.weekday:
+ return False
+ n1, n2 = self.weekday.n, other.weekday.n
+ 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
+ self.days == other.days and
+ self.hours == other.hours and
+ self.minutes == other.minutes and
+ self.seconds == other.seconds and
+ self.microseconds == other.microseconds and
+ self.leapdays == other.leapdays and
+ self.year == other.year and
+ self.month == other.month and
+ self.day == other.day and
+ self.hour == other.hour and
+ self.minute == other.minute and
+ self.second == other.second and
+ self.microsecond == other.microsecond)
+
+ def __ne__(self, other):
+ return not self.__eq__(other)
+
+ def __div__(self, other):
+ try:
+ reciprocal = 1 / float(other)
+ except TypeError:
+ return NotImplemented
+
+ return self.__mul__(reciprocal)
+
+ __truediv__ = __div__
+
+ def __repr__(self):
+ l = []
+ for attr in ["years", "months", "days", "leapdays",
+ "hours", "minutes", "seconds", "microseconds"]:
+ value = getattr(self, attr)
+ if value:
+ l.append("{attr}={value:+g}".format(attr=attr, value=value))
+ for attr in ["year", "month", "day", "weekday",
+ "hour", "minute", "second", "microsecond"]:
+ value = getattr(self, attr)
+ if value is not None:
+ l.append("{attr}={value}".format(attr=attr, value=repr(value)))
+ return "{classname}({attrs})".format(classname=self.__class__.__name__,
+ attrs=", ".join(l))
+
+def _sign(x):
+ return int(copysign(1, x))
+
+# vim:ts=4:sw=4:et
diff --git a/ooni/contrib/dateutil/tz/__init__.py
b/ooni/contrib/dateutil/tz/__init__.py
new file mode 100644
index 0000000..1cba7b9
--- /dev/null
+++ b/ooni/contrib/dateutil/tz/__init__.py
@@ -0,0 +1,4 @@
+from .tz import *
+
+__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
+ "tzstr", "tzical", "tzwin", "tzwinlocal", "gettz"]
diff --git a/ooni/contrib/dateutil/tz/_common.py
b/ooni/contrib/dateutil/tz/_common.py
new file mode 100644
index 0000000..6e862a9
--- /dev/null
+++ b/ooni/contrib/dateutil/tz/_common.py
@@ -0,0 +1,100 @@
+from six import PY3
+from six.moves import _thread
+
+import datetime
+import copy
+
+__all__ = ['tzname_in_python2']
+
+def tzname_in_python2(namefunc):
+ """Change unicode output into bytestrings in Python 2
+
+ tzname() API changed in Python 3. It used to return bytes, but was changed
+ to unicode strings
+ """
+ def adjust_encoding(*args, **kwargs):
+ name = namefunc(*args, **kwargs)
+ if name is not None and not PY3:
+ name = name.encode()
+
+ return name
+
+ return adjust_encoding
+
+
+class _tzinfo(datetime.tzinfo):
+ """
+ Base class for all `dateutil` `tzinfo` objects.
+ """
+
+ def __init__(self, *args, **kwargs):
+ super(_tzinfo, self).__init__(*args, **kwargs)
+
+ self._fold = None
+
+ def _as_fold_naive(self):
+ tzi = copy.copy(self)
+ tzi._fold = None
+
+ return tzi
+
+ def _fold_status(self, dt_utc, dt_wall):
+ """
+ Determine the fold status of a "wall" datetime, given a representation
+ of the same datetime as a (naive) UTC datetime. This is calculated
based
+ on the assumption that ``dt.utcoffset() - dt.dst()`` is constant for
all
+ datetimes, and that this offset is the actual number of hours
separating
+ ``dt_utc`` and ``dt_wall``.
+
+ :param dt_utc:
+ Representation of the datetime as UTC
+
+ :param dt_wall:
+ Representation of the datetime as "wall time". This parameter must
+ either have a `fold` attribute or have a fold-naive
+ :class:`datetime.tzinfo` attached, otherwise the calculation may
+ fail.
+ """
+ _fold = getattr(dt_wall, 'fold', None) # PEP 495
+
+ if _fold is None:
+ # This is always true on the DST side, but _fold has no meaning
+ # outside of ambiguous times.
+ _fold = (dt_wall - dt_utc) != (dt_utc.utcoffset() - dt_utc.dst())
+
+ return _fold
+
+ def fromutc(self, dt):
+ """
+ Given a timezone-aware datetime in a given timezone, calculates a
+ timezone-aware datetime in a new timezone.
+
+ Since this is the one time that we *know* we have an unambiguous
+ datetime object, we take this opportunity to determine whether the
+ datetime is ambiguous and in a "fold" state (e.g. if it's the first
+ occurance, chronologically, of the ambiguous datetime).
+
+ .. caution ::
+
+ This creates a stateful ``tzinfo`` object that may not behave as
+ expected when performing arithmetic on timezone-aware datetimes.
+
+ :param dt:
+ A timezone-aware :class:`datetime.dateime` object.
+ """
+ # Use a fold-naive version of this tzinfo for calculations
+ tzi = self._as_fold_naive()
+ dt = dt.replace(tzinfo=tzi)
+
+ dt_wall = super(_tzinfo, tzi).fromutc(dt)
+
+ # Calculate the fold status given the two datetimes.
+ _fold = self._fold_status(dt, dt_wall)
+
+ # Set the default fold value for ambiguous dates
+ if _fold != self._fold:
+ tzi._fold = _fold
+ else:
+ dt_wall = dt_wall.replace(tzinfo=self)
+
+ return dt_wall
diff --git a/ooni/contrib/dateutil/tz/tz.py b/ooni/contrib/dateutil/tz/tz.py
new file mode 100644
index 0000000..6db3cba
--- /dev/null
+++ b/ooni/contrib/dateutil/tz/tz.py
@@ -0,0 +1,1339 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers timezone implementations subclassing the abstract
+:py:`datetime.tzinfo` type. There are classes to handle tzfile format files
+(usually are in :file:`/etc/localtime`, :file:`/usr/share/zoneinfo`, etc), TZ
+environment string (in all known formats), given ranges (with help from
+relative deltas), local machine timezone, fixed offset timezone, and UTC
+timezone.
+"""
+import datetime
+import struct
+import time
+import sys
+import os
+import bisect
+import copy
+
+from operator import itemgetter
+
+from contextlib import contextmanager
+
+from six import string_types, PY3
+from ._common import tzname_in_python2, _tzinfo
+
+try:
+ from .win import tzwin, tzwinlocal
+except ImportError:
+ tzwin = tzwinlocal = None
+
+ZERO = datetime.timedelta(0)
+EPOCH = datetime.datetime.utcfromtimestamp(0)
+EPOCHORDINAL = EPOCH.toordinal()
+
+class tzutc(datetime.tzinfo):
+ """
+ This is a tzinfo object that represents the UTC time zone.
+ """
+ def utcoffset(self, dt):
+ return ZERO
+
+ def dst(self, dt):
+ return ZERO
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ return "UTC"
+
+ def __eq__(self, other):
+ if not isinstance(other, (tzutc, tzoffset)):
+ return NotImplemented
+
+ return (isinstance(other, tzutc) or
+ (isinstance(other, tzoffset) and other._offset == ZERO))
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def __repr__(self):
+ return "%s()" % self.__class__.__name__
+
+ __reduce__ = object.__reduce__
+
+
+class tzoffset(datetime.tzinfo):
+ """
+ A simple class for representing a fixed offset from UTC.
+
+ :param name:
+ The timezone name, to be returned when ``tzname()`` is called.
+
+ :param offset:
+ The time zone offset in seconds.
+ """
+ def __init__(self, name, offset):
+ self._name = name
+ self._offset = datetime.timedelta(seconds=offset)
+
+ def utcoffset(self, dt):
+ return self._offset
+
+ def dst(self, dt):
+ return ZERO
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ return self._name
+
+ def __eq__(self, other):
+ if not isinstance(other, tzoffset):
+ return NotImplemented
+
+ return self._offset == other._offset
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def __repr__(self):
+ return "%s(%s, %s)" % (self.__class__.__name__,
+ repr(self._name),
+ int(_total_seconds(self._offset)))
+
+ __reduce__ = object.__reduce__
+
+
+class tzlocal(_tzinfo):
+ """
+ A :class:`tzinfo` subclass built around the ``time`` timezone functions.
+ """
+ def __init__(self):
+ super(tzlocal, self).__init__()
+
+ self._std_offset = datetime.timedelta(seconds=-time.timezone)
+ if time.daylight:
+ self._dst_offset = datetime.timedelta(seconds=-time.altzone)
+ else:
+ self._dst_offset = self._std_offset
+
+ self._dst_saved = self._dst_offset - self._std_offset
+ self._hasdst = bool(self._dst_saved)
+
+ def utcoffset(self, dt):
+ if dt is None and self._hasdst:
+ return None
+
+ if self._isdst(dt):
+ return self._dst_offset
+ else:
+ return self._std_offset
+
+ def dst(self, dt):
+ if dt is None and self._hasdst:
+ return None
+
+ if self._isdst(dt):
+ return self._dst_offset - self._std_offset
+ else:
+ return ZERO
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ return time.tzname[self._isdst(dt)]
+
+ def _isdst(self, dt):
+ # We can't use mktime here. It is unstable when deciding if
+ # the hour near to a change is DST or not.
+ #
+ # timestamp = time.mktime((dt.year, dt.month, dt.day, dt.hour,
+ # dt.minute, dt.second, dt.weekday(), 0, -1))
+ # return time.localtime(timestamp).tm_isdst
+ #
+ # The code above yields the following result:
+ #
+ # >>> import tz, datetime
+ # >>> t = tz.tzlocal()
+ # >>> datetime.datetime(2003,2,15,23,tzinfo=t).tzname()
+ # 'BRDT'
+ # >>> datetime.datetime(2003,2,16,0,tzinfo=t).tzname()
+ # 'BRST'
+ # >>> datetime.datetime(2003,2,15,23,tzinfo=t).tzname()
+ # 'BRST'
+ # >>> datetime.datetime(2003,2,15,22,tzinfo=t).tzname()
+ # 'BRDT'
+ # >>> datetime.datetime(2003,2,15,23,tzinfo=t).tzname()
+ # 'BRDT'
+ #
+ # Here is a more stable implementation:
+ #
+ if not self._hasdst:
+ return False
+
+ dstval = self._naive_is_dst(dt)
+
+ # Check for ambiguous times:
+ if not dstval and self._fold is not None:
+ dst_fold_offset = self._naive_is_dst(dt - self._dst_saved)
+
+ if dst_fold_offset:
+ return self._fold
+
+ return dstval
+
+ def _naive_is_dst(self, dt):
+ timestamp = _datetime_to_timestamp(dt)
+ return time.localtime(timestamp + time.timezone).tm_isdst
+
+ def __eq__(self, other):
+ if not isinstance(other, tzlocal):
+ return NotImplemented
+
+ return (self._std_offset == other._std_offset and
+ self._dst_offset == other._dst_offset)
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def __repr__(self):
+ return "%s()" % self.__class__.__name__
+
+ __reduce__ = object.__reduce__
+
+
+class _ttinfo(object):
+ __slots__ = ["offset", "delta", "isdst", "abbr",
+ "isstd", "isgmt", "dstoffset"]
+
+ def __init__(self):
+ for attr in self.__slots__:
+ setattr(self, attr, None)
+
+ def __repr__(self):
+ l = []
+ for attr in self.__slots__:
+ value = getattr(self, attr)
+ if value is not None:
+ l.append("%s=%s" % (attr, repr(value)))
+ return "%s(%s)" % (self.__class__.__name__, ", ".join(l))
+
+ def __eq__(self, other):
+ if not isinstance(other, _ttinfo):
+ return NotImplemented
+
+ return (self.offset == other.offset and
+ self.delta == other.delta and
+ self.isdst == other.isdst and
+ self.abbr == other.abbr and
+ self.isstd == other.isstd and
+ self.isgmt == other.isgmt and
+ self.dstoffset == other.dstoffset)
+
+ def __ne__(self, other):
+ return not (self == 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(object):
+ """
+ Lightweight class for holding the relevant transition and time zone
+ information read from binary tzfiles.
+ """
+ attrs = ['trans_list', 'trans_idx', 'ttinfo_list',
+ 'ttinfo_std', 'ttinfo_dst', 'ttinfo_before', 'ttinfo_first']
+
+ def __init__(self, **kwargs):
+ for attr in self.attrs:
+ setattr(self, attr, kwargs.get(attr, None))
+
+
+class tzfile(_tzinfo):
+ """
+ This is a ``tzinfo`` subclass that allows one to use the ``tzfile(5)``
+ format timezone files to extract current and historical zone information.
+
+ :param fileobj:
+ This can be an opened file stream or a file name that the time zone
+ information can be read from.
+
+ :param filename:
+ This is an optional parameter specifying the source of the time zone
+ information in the event that ``fileobj`` is a file object. If omitted
+ and ``fileobj`` is a file stream, this parameter will be set either to
+ ``fileobj``'s ``name`` attribute or to ``repr(fileobj)``.
+
+ See `Sources for Time Zone and Daylight Saving Time Data
+ <http://www.twinsun.com/tz/tz-link.htm>`_ for more information. Time zone
+ files can be compiled from the `IANA Time Zone database files
+ <https://www.iana.org/time-zones>`_ with the `zic time zone compiler
+ <https://www.freebsd.org/cgi/man.cgi?query=zic&sektion=8>`_
+ """
+
+ def __init__(self, fileobj, filename=None):
+ super(tzfile, self).__init__()
+
+ file_opened_here = False
+ if isinstance(fileobj, string_types):
+ self._filename = fileobj
+ fileobj = open(fileobj, 'rb')
+ file_opened_here = True
+ elif filename is not None:
+ self._filename = filename
+ elif hasattr(fileobj, "name"):
+ self._filename = fileobj.name
+ else:
+ self._filename = repr(fileobj)
+
+ if fileobj is not None:
+ if not file_opened_here:
+ fileobj = _ContextWrapper(fileobj)
+
+ with fileobj as file_stream:
+ tzobj = self._read_tzfile(file_stream)
+
+ self._set_tzdata(tzobj)
+
+ def _set_tzdata(self, tzobj):
+ """ Set the time zone data of this object from a _tzfile object """
+ # Copy the relevant attributes over as private attributes
+ for attr in _tzfile.attrs:
+ setattr(self, '_' + attr, getattr(tzobj, attr))
+
+ def _read_tzfile(self, fileobj):
+ out = _tzfile()
+
+ # From tzfile(5):
+ #
+ # The time zone information files used by tzset(3)
+ # begin with the magic characters "TZif" to identify
+ # them as time zone information files, followed by
+ # sixteen bytes reserved for future use, followed by
+ # six four-byte values of type long, written in a
+ # ``standard'' byte order (the high-order byte
+ # of the value is written first).
+ if fileobj.read(4).decode() != "TZif":
+ raise ValueError("magic not found")
+
+ fileobj.read(16)
+
+ (
+ # The number of UTC/local indicators stored in the file.
+ ttisgmtcnt,
+
+ # The number of standard/wall indicators stored in the file.
+ ttisstdcnt,
+
+ # The number of leap seconds for which data is
+ # stored in the file.
+ leapcnt,
+
+ # The number of "transition times" for which data
+ # is stored in the file.
+ timecnt,
+
+ # The number of "local time types" for which data
+ # is stored in the file (must not be zero).
+ typecnt,
+
+ # The number of characters of "time zone
+ # abbreviation strings" stored in the file.
+ charcnt,
+
+ ) = struct.unpack(">6l", fileobj.read(24))
+
+ # The above header is followed by tzh_timecnt four-byte
+ # values of type long, sorted in ascending order.
+ # These values are written in ``standard'' byte order.
+ # Each is used as a transition time (as returned by
+ # time(2)) at which the rules for computing local time
+ # change.
+
+ if timecnt:
+ out.trans_list = list(struct.unpack(">%dl" % timecnt,
+ fileobj.read(timecnt*4)))
+ else:
+ out.trans_list = []
+
+ # Next come tzh_timecnt one-byte values of type unsigned
+ # char; each one tells which of the different types of
+ # ``local time'' types described in the file is associated
+ # with the same-indexed transition time. These values
+ # serve as indices into an array of ttinfo structures that
+ # appears next in the file.
+
+ if timecnt:
+ out.trans_idx = struct.unpack(">%dB" % timecnt,
+ fileobj.read(timecnt))
+ else:
+ out.trans_idx = []
+
+ # Each ttinfo structure is written as a four-byte value
+ # for tt_gmtoff of type long, in a standard byte
+ # order, followed by a one-byte value for tt_isdst
+ # and a one-byte value for tt_abbrind. In each
+ # structure, tt_gmtoff gives the number of
+ # seconds to be added to UTC, tt_isdst tells whether
+ # tm_isdst should be set by localtime(3), and
+ # tt_abbrind serves as an index into the array of
+ # time zone abbreviation characters that follow the
+ # ttinfo structure(s) in the file.
+
+ ttinfo = []
+
+ for i in range(typecnt):
+ ttinfo.append(struct.unpack(">lbb", fileobj.read(6)))
+
+ abbr = fileobj.read(charcnt).decode()
+
+ # Then there are tzh_leapcnt pairs of four-byte
+ # values, written in standard byte order; the
+ # first value of each pair gives the time (as
+ # returned by time(2)) at which a leap second
+ # occurs; the second gives the total number of
+ # leap seconds to be applied after the given time.
+ # The pairs of values are sorted in ascending order
+ # by time.
+
+ # Not used, for now (but read anyway for correct file position)
+ if leapcnt:
+ leap = struct.unpack(">%dl" % (leapcnt*2),
+ fileobj.read(leapcnt*8))
+
+ # Then there are tzh_ttisstdcnt standard/wall
+ # indicators, each stored as a one-byte value;
+ # they tell whether the transition times associated
+ # with local time types were specified as standard
+ # time or wall clock time, and are used when
+ # a time zone file is used in handling POSIX-style
+ # time zone environment variables.
+
+ if ttisstdcnt:
+ isstd = struct.unpack(">%db" % ttisstdcnt,
+ fileobj.read(ttisstdcnt))
+
+ # Finally, there are tzh_ttisgmtcnt UTC/local
+ # indicators, each stored as a one-byte value;
+ # they tell whether the transition times associated
+ # with local time types were specified as UTC or
+ # local time, and are used when a time zone file
+ # is used in handling POSIX-style time zone envi-
+ # ronment variables.
+
+ if ttisgmtcnt:
+ isgmt = struct.unpack(">%db" % ttisgmtcnt,
+ fileobj.read(ttisgmtcnt))
+
+ # Build ttinfo list
+ out.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 = 60 * ((gmtoff + 30) // 60)
+ tti = _ttinfo()
+ tti.offset = gmtoff
+ tti.dstoffset = datetime.timedelta(0)
+ tti.delta = datetime.timedelta(seconds=gmtoff)
+ tti.isdst = isdst
+ tti.abbr = abbr[abbrind:abbr.find('\x00', abbrind)]
+ tti.isstd = (ttisstdcnt > i and isstd[i] != 0)
+ tti.isgmt = (ttisgmtcnt > i and isgmt[i] != 0)
+ out.ttinfo_list.append(tti)
+
+ # Replace ttinfo indexes for ttinfo objects.
+ out.trans_idx = [out.ttinfo_list[idx] for idx in out.trans_idx]
+
+ # Set standard, dst, and before ttinfos. before will be
+ # used when a given time is before any transitions,
+ # and will be set to the first non-dst ttinfo, or to
+ # the first dst, if all of them are dst.
+ out.ttinfo_std = None
+ out.ttinfo_dst = None
+ out.ttinfo_before = None
+ if out.ttinfo_list:
+ if not out.trans_list:
+ out.ttinfo_std = out.ttinfo_first = out.ttinfo_list[0]
+ else:
+ for i in range(timecnt-1, -1, -1):
+ tti = out.trans_idx[i]
+ if not out.ttinfo_std and not tti.isdst:
+ out.ttinfo_std = tti
+ elif not out.ttinfo_dst and tti.isdst:
+ out.ttinfo_dst = tti
+
+ if out.ttinfo_std and out.ttinfo_dst:
+ break
+ else:
+ if out.ttinfo_dst and not out.ttinfo_std:
+ out.ttinfo_std = out.ttinfo_dst
+
+ for tti in out.ttinfo_list:
+ if not tti.isdst:
+ out.ttinfo_before = tti
+ break
+ else:
+ out.ttinfo_before = out.ttinfo_list[0]
+
+ # Now fix transition times to become relative to wall time.
+ #
+ # I'm not sure about this. In my tests, the tz source file
+ # is setup to wall time, and in the binary file isstd and
+ # isgmt are off, so it should be in wall time. OTOH, it's
+ # always in gmt time. Let me know if you have comments
+ # about this.
+ laststdoffset = None
+ for i, tti in enumerate(out.trans_idx):
+ if not tti.isdst:
+ offset = tti.offset
+ laststdoffset = offset
+ else:
+ if laststdoffset is not None:
+ # Store the DST offset as well and update it in the list
+ tti.dstoffset = tti.offset - laststdoffset
+ out.trans_idx[i] = tti
+
+ offset = laststdoffset or 0
+
+ out.trans_list[i] += offset
+
+ # In case we missed any DST offsets on the way in for some reason, make
+ # a second pass over the list, looking for the /next/ DST offset.
+ laststdoffset = None
+ for i in reversed(range(len(out.trans_idx))):
+ tti = out.trans_idx[i]
+ if tti.isdst:
+ if not (tti.dstoffset or laststdoffset is None):
+ tti.dstoffset = tti.offset - laststdoffset
+ else:
+ laststdoffset = tti.offset
+
+ if not isinstance(tti.dstoffset, datetime.timedelta):
+ tti.dstoffset = datetime.timedelta(seconds=tti.dstoffset)
+
+ out.trans_idx[i] = tti
+
+ out.trans_idx = tuple(out.trans_idx)
+ out.trans_list = tuple(out.trans_list)
+
+ return out
+
+ def _find_last_transition(self, dt):
+ # If there's no list, there are no transitions to find
+ if not self._trans_list:
+ return None
+
+ timestamp = _datetime_to_timestamp(dt)
+
+ # Find where the timestamp fits in the transition list - if the
+ # timestamp is a transition time, it's part of the "after" period.
+ idx = bisect.bisect_right(self._trans_list, timestamp)
+
+ # We want to know when the previous transition was, so subtract off 1
+ return idx - 1
+
+ def _get_ttinfo(self, idx):
+ # For no list or after the last transition, default to _ttinfo_std
+ if idx is None or (idx + 1) == len(self._trans_list):
+ return self._ttinfo_std
+
+ # If there is a list and the time is before it, return _ttinfo_before
+ if idx < 0:
+ return self._ttinfo_before
+
+ return self._trans_idx[idx]
+
+ def _find_ttinfo(self, dt):
+ idx = self._resolve_ambiguous_time(dt)
+
+ return self._get_ttinfo(idx)
+
+ def _resolve_ambiguous_time(self, dt, idx=None):
+ if idx is None:
+ idx = self._find_last_transition(dt)
+
+ # If we're fold-naive or we have no transitions, return the index.
+ if self._fold is None or idx is None:
+ return idx
+
+ timestamp = _datetime_to_timestamp(dt)
+ tti = self._get_ttinfo(idx)
+
+ if idx > 0:
+ # Calculate the difference in offsets from the current to previous
+ od = self._get_ttinfo(idx - 1).offset - tti.offset
+ tt = self._trans_list[idx] # Transition time
+
+ if timestamp < tt + od:
+ if self._fold:
+ return idx - 1
+ else:
+ return idx
+
+ if idx < len(self._trans_list):
+ # Calculate the difference in offsets from the previous to current
+ od = self._get_ttinfo(idx + 1).offset - tti.offset
+ tt = self._trans_list[idx + 1]
+
+ if timestamp > tt - od:
+ if self._fold:
+ return idx + 1
+ else:
+ return idx
+
+ return idx
+
+ def utcoffset(self, dt):
+ if dt is None:
+ return None
+
+ if not self._ttinfo_std:
+ return ZERO
+
+ return self._find_ttinfo(dt).delta
+
+ def dst(self, dt):
+ if not self._ttinfo_dst:
+ return ZERO
+
+ tti = self._find_ttinfo(dt)
+
+ if not tti.isdst:
+ return ZERO
+
+ # The documentation says that utcoffset()-dst() must
+ # be constant for every dt.
+ return tti.dstoffset
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ if not self._ttinfo_std:
+ return None
+ return self._find_ttinfo(dt).abbr
+
+ def __eq__(self, other):
+ if not isinstance(other, tzfile):
+ return NotImplemented
+ return (self._trans_list == other._trans_list and
+ self._trans_idx == other._trans_idx and
+ self._ttinfo_list == other._ttinfo_list)
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def __repr__(self):
+ return "%s(%s)" % (self.__class__.__name__, repr(self._filename))
+
+ def __reduce__(self):
+ return self.__reduce_ex__(None)
+
+ def __reduce_ex__(self, protocol):
+ return (self.__class__, (None, self._filename), self.__dict__)
+
+
+class tzrange(_tzinfo):
+ """
+ The ``tzrange`` object is a time zone specified by a set of offsets and
+ abbreviations, equivalent to the way the ``TZ`` variable can be specified
+ in POSIX-like systems, but using Python delta objects to specify DST
+ start, end and offsets.
+
+ :param stdabbr:
+ The abbreviation for standard time (e.g. ``'EST'``).
+
+ :param stdoffset:
+ An integer or :class:`datetime.timedelta` object or equivalent
+ specifying the base offset from UTC.
+
+ If unspecified, +00:00 is used.
+
+ :param dstabbr:
+ The abbreviation for DST / "Summer" time (e.g. ``'EDT'``).
+
+ If specified, with no other DST information, DST is assumed to occur
+ and the default behavior or ``dstoffset``, ``start`` and ``end`` is
+ used. If unspecified and no other DST information is specified, it
+ is assumed that this zone has no DST.
+
+ If this is unspecified and other DST information is *is* specified,
+ DST occurs in the zone but the time zone abbreviation is left
+ unchanged.
+
+ :param dstoffset:
+ A an integer or :class:`datetime.timedelta` object or equivalent
+ specifying the UTC offset during DST. If unspecified and any other DST
+ information is specified, it is assumed to be the STD offset +1 hour.
+
+ :param start:
+ A :class:`relativedelta.relativedelta` object or equivalent specifying
+ the time and time of year that daylight savings time starts. To
specify,
+ for example, that DST starts at 2AM on the 2nd Sunday in March, pass:
+
+ ``relativedelta(hours=2, month=3, day=1, weekday=SU(+2))``
+
+ If unspecified and any other DST information is specified, the default
+ value is 2 AM on the first Sunday in April.
+
+ :param end:
+ A :class:`relativedelta.relativedelta` object or equivalent
representing
+ the time and time of year that daylight savings time ends, with the
+ same specification method as in ``start``. One note is that this should
+ point to the first time in the *standard* zone, so if a transition
+ occurs at 2AM in the DST zone and the clocks are set back 1 hour to
1AM,
+ set the `hours` parameter to +1.
+
+
+ **Examples:**
+
+ .. testsetup:: tzrange
+
+ from dateutil.tz import tzrange, tzstr
+
+ .. doctest:: tzrange
+
+ >>> tzstr('EST5EDT') == tzrange("EST", -18000, "EDT")
+ True
+
+ >>> from dateutil.relativedelta import *
+ >>> range1 = tzrange("EST", -18000, "EDT")
+ >>> range2 = tzrange("EST", -18000, "EDT", -14400,
+ ... relativedelta(hours=+2, month=4, day=1,
+ ... weekday=SU(+1)),
+ ... relativedelta(hours=+1, month=10, day=31,
+ ... weekday=SU(-1)))
+ >>> tzstr('EST5EDT') == range1 == range2
+ True
+
+ """
+ def __init__(self, stdabbr, stdoffset=None,
+ dstabbr=None, dstoffset=None,
+ start=None, end=None):
+ super(tzrange, self).__init__()
+
+ global relativedelta
+ from dateutil import relativedelta
+
+ self._std_abbr = stdabbr
+ self._dst_abbr = dstabbr
+
+ try:
+ stdoffset = _total_seconds(stdoffset)
+ except (TypeError, AttributeError):
+ pass
+
+ try:
+ dstoffset = _total_seconds(dstoffset)
+ except (TypeError, AttributeError):
+ pass
+
+ if stdoffset is not None:
+ self._std_offset = datetime.timedelta(seconds=stdoffset)
+ else:
+ self._std_offset = ZERO
+
+ if dstoffset is not None:
+ self._dst_offset = datetime.timedelta(seconds=dstoffset)
+ elif dstabbr and stdoffset is not None:
+ self._dst_offset = self._std_offset+datetime.timedelta(hours=+1)
+ else:
+ self._dst_offset = ZERO
+
+ 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 dstabbr and end is None:
+ self._end_delta = relativedelta.relativedelta(
+ hours=+1, month=10, day=31, weekday=relativedelta.SU(-1))
+ else:
+ self._end_delta = end
+
+ self._dst_base_offset = self._dst_offset - self._std_offset
+
+ def utcoffset(self, dt):
+ if dt is None:
+ return None
+
+ if self._isdst(dt):
+ return self._dst_offset
+ else:
+ return self._std_offset
+
+ def dst(self, dt):
+ if self._isdst(dt):
+ return self._dst_offset - self._std_offset
+ else:
+ return ZERO
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ if self._isdst(dt):
+ return self._dst_abbr
+ else:
+ return self._std_abbr
+
+ def _isdst(self, dt):
+ transitions = self._transitions(dt.year)
+
+ if transitions is None:
+ return False
+
+ start, end = transitions
+
+ dt = dt.replace(tzinfo=None)
+
+ # Handle ambiguous dates
+ if self._fold is not None:
+ if end <= dt < end + self._dst_base_offset:
+ return self._fold
+
+ if start < end:
+ return start <= dt < end
+ else:
+ return not end <= dt < start
+
+ def _transitions(self, year):
+ if not self._start_delta:
+ return None
+
+ base_year = datetime.datetime(year, 1, 1)
+
+ start = base_year + self._start_delta
+ end = base_year + self._end_delta
+
+ return (start, end)
+
+ def __eq__(self, other):
+ if not isinstance(other, tzrange):
+ return NotImplemented
+
+ return (self._std_abbr == other._std_abbr and
+ self._dst_abbr == other._dst_abbr and
+ self._std_offset == other._std_offset and
+ self._dst_offset == other._dst_offset and
+ self._start_delta == other._start_delta and
+ self._end_delta == other._end_delta)
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def __repr__(self):
+ return "%s(...)" % self.__class__.__name__
+
+ __reduce__ = object.__reduce__
+
+
+class tzstr(tzrange):
+ """
+ ``tzstr`` objects are time zone objects specified by a time-zone string as
+ it would be passed to a ``TZ`` variable on POSIX-style systems (see
+ the `GNU C Library: TZ Variable`_ for more details).
+
+ There is one notable exception, which is that POSIX-style time zones use an
+ inverted offset format, so normally ``GMT+3`` would be parsed as an offset
+ 3 hours *behind* GMT. The ``tzstr`` time zone object will parse this as an
+ offset 3 hours *ahead* of GMT. If you would like to maintain the POSIX
+ behavior, pass a ``True`` value to ``posix_offset``.
+
+ The :class:`tzrange` object provides the same functionality, but is
+ specified using :class:`relativedelta.relativedelta` objects. rather than
+ strings.
+
+ :param s:
+ A time zone string in ``TZ`` variable format. This can be a
+ :class:`bytes` (2.x: :class:`str`), :class:`str` (2.x:
:class:`unicode`)
+ or a stream emitting unicode characters (e.g. :class:`StringIO`).
+
+ :param posix_offset:
+ Optional. If set to ``True``, interpret strings such as ``GMT+3`` or
+ ``UTC+3`` as being 3 hours *behind* UTC rather than ahead, per the
+ POSIX standard.
+
+ .. _`GNU C Library: TZ Variable`:
+ https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
+ """
+ def __init__(self, s, posix_offset=False):
+ global 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") and not posix_offset:
+ 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.
+ tzrange.__init__(self, res.stdabbr, res.stdoffset,
+ 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)
+
+ def _delta(self, x, isend=0):
+ kwargs = {}
+ if x.month is not None:
+ kwargs["month"] = x.month
+ if x.weekday is not None:
+ kwargs["weekday"] = relativedelta.weekday(x.weekday, x.week)
+ if x.week > 0:
+ kwargs["day"] = 1
+ else:
+ kwargs["day"] = 31
+ elif x.day:
+ kwargs["day"] = x.day
+ elif x.yday is not None:
+ kwargs["yearday"] = x.yday
+ elif x.jyday is not None:
+ kwargs["nlyearday"] = x.jyday
+ if not kwargs:
+ # Default is to start on first sunday of april, and end
+ # on last sunday of october.
+ if not isend:
+ kwargs["month"] = 4
+ kwargs["day"] = 1
+ kwargs["weekday"] = relativedelta.SU(+1)
+ else:
+ kwargs["month"] = 10
+ kwargs["day"] = 31
+ kwargs["weekday"] = relativedelta.SU(-1)
+ if x.time is not None:
+ kwargs["seconds"] = x.time
+ else:
+ # Default is 2AM.
+ kwargs["seconds"] = 7200
+ if isend:
+ # Convert to standard time, to follow the documented way
+ # of working with the extra hour. See the documentation
+ # of the tzinfo class.
+ delta = self._dst_offset - self._std_offset
+ kwargs["seconds"] -= delta.seconds + delta.days * 86400
+ return relativedelta.relativedelta(**kwargs)
+
+ def __repr__(self):
+ return "%s(%s)" % (self.__class__.__name__, repr(self._s))
+
+
+class _tzicalvtzcomp(object):
+ def __init__(self, tzoffsetfrom, tzoffsetto, isdst,
+ tzname=None, rrule=None):
+ self.tzoffsetfrom = datetime.timedelta(seconds=tzoffsetfrom)
+ self.tzoffsetto = datetime.timedelta(seconds=tzoffsetto)
+ self.tzoffsetdiff = self.tzoffsetto - self.tzoffsetfrom
+ self.isdst = isdst
+ self.tzname = tzname
+ self.rrule = rrule
+
+
+class _tzicalvtz(_tzinfo):
+ def __init__(self, tzid, comps=[]):
+ super(_tzicalvtz, self).__init__()
+
+ self._tzid = tzid
+ self._comps = comps
+ self._cachedate = []
+ self._cachecomp = []
+
+ def _find_comp(self, dt):
+ if len(self._comps) == 1:
+ return self._comps[0]
+
+ dt = dt.replace(tzinfo=None)
+
+ try:
+ return self._cachecomp[self._cachedate.index((dt, self._fold))]
+ except ValueError:
+ pass
+
+
+ lastcompdt = None
+ lastcomp = None
+
+ for comp in self._comps:
+ compdt = self._find_compdt(comp, dt)
+
+ if compdt and (not lastcompdt or lastcompdt < compdt):
+ lastcompdt = compdt
+ lastcomp = comp
+
+ if not lastcomp:
+ # RFC says nothing about what to do when a given
+ # time is before the first onset date. We'll look for the
+ # first standard component, or the first component, if
+ # none is found.
+ for comp in self._comps:
+ if not comp.isdst:
+ lastcomp = comp
+ break
+ else:
+ lastcomp = comp[0]
+
+ self._cachedate.insert(0, (dt, self._fold))
+ self._cachecomp.insert(0, lastcomp)
+
+ if len(self._cachedate) > 10:
+ self._cachedate.pop()
+ self._cachecomp.pop()
+
+ return lastcomp
+
+ def _find_compdt(self, comp, dt):
+ if comp.tzoffsetdiff < ZERO and not self._fold:
+ dt -= comp.tzoffsetdiff
+
+ compdt = comp.rrule.before(dt, inc=True)
+
+ return compdt
+
+ def utcoffset(self, dt):
+ if dt is None:
+ return None
+
+ return self._find_comp(dt).tzoffsetto
+
+ def dst(self, dt):
+ comp = self._find_comp(dt)
+ if comp.isdst:
+ return comp.tzoffsetdiff
+ else:
+ return ZERO
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ return self._find_comp(dt).tzname
+
+ def __repr__(self):
+ return "<tzicalvtz %s>" % repr(self._tzid)
+
+ __reduce__ = object.__reduce__
+
+
+class tzical(object):
+ """
+ This object is designed to parse an iCalendar-style ``VTIMEZONE`` structure
+ as set out in `RFC 2445`_ Section 4.6.5 into one or more `tzinfo` objects.
+
+ :param `fileobj`:
+ A file or stream in iCalendar format, which should be UTF-8 encoded
+ with CRLF endings.
+
+ .. _`RFC 2445`: https://www.ietf.org/rfc/rfc2445.txt
+ """
+ def __init__(self, fileobj):
+ global rrule
+ from dateutil import rrule
+
+ if isinstance(fileobj, string_types):
+ self._s = fileobj
+ # ical should be encoded in UTF-8 with CRLF
+ fileobj = open(fileobj, 'r')
+ file_opened_here = True
+ else:
+ self._s = getattr(fileobj, 'name', repr(fileobj))
+ fileobj = _ContextWrapper(fileobj)
+
+ self._vtz = {}
+
+ with fileobj as fobj:
+ self._parse_rfc(fobj.read())
+
+ def keys(self):
+ """
+ Retrieves the available time zones as a list.
+ """
+ return list(self._vtz.keys())
+
+ def get(self, tzid=None):
+ """
+ Retrieve a :py:class:`datetime.tzinfo` object by its ``tzid``.
+
+ :param tzid:
+ If there is exactly one time zone available, omitting ``tzid``
+ or passing :py:const:`None` value returns it. Otherwise a valid
+ key (which can be retrieved from :func:`keys`) is required.
+
+ :raises ValueError:
+ Raised if ``tzid`` is not specified but there are either more
+ or fewer than 1 zone defined.
+
+ :returns:
+ Returns either a :py:class:`datetime.tzinfo` object representing
+ the relevant time zone or :py:const:`None` if the ``tzid`` was
+ not found.
+ """
+ if tzid is None:
+ if len(self._vtz) == 0:
+ raise ValueError("no timezones defined")
+ elif len(self._vtz) > 1:
+ raise ValueError("more than one timezone available")
+ tzid = next(iter(self._vtz))
+
+ return self._vtz.get(tzid)
+
+ def _parse_offset(self, s):
+ s = s.strip()
+ if not s:
+ raise ValueError("empty offset")
+ if s[0] in ('+', '-'):
+ signal = (-1, +1)[s[0] == '+']
+ s = s[1:]
+ else:
+ signal = +1
+ if len(s) == 4:
+ return (int(s[:2]) * 3600 + int(s[2:]) * 60) * signal
+ elif len(s) == 6:
+ return (int(s[:2]) * 3600 + int(s[2:4]) * 60 + int(s[4:])) * signal
+ else:
+ raise ValueError("invalid offset: " + s)
+
+ def _parse_rfc(self, s):
+ lines = s.splitlines()
+ if not lines:
+ raise ValueError("empty string")
+
+ # Unfold
+ i = 0
+ while i < len(lines):
+ line = lines[i].rstrip()
+ if not line:
+ del lines[i]
+ elif i > 0 and line[0] == " ":
+ lines[i-1] += line[1:]
+ del lines[i]
+ else:
+ i += 1
+
+ tzid = None
+ comps = []
+ invtz = False
+ comptype = None
+ for line in lines:
+ if not line:
+ continue
+ name, value = line.split(':', 1)
+ parms = name.split(';')
+ if not parms:
+ raise ValueError("empty property name")
+ name = parms[0].upper()
+ parms = parms[1:]
+ if invtz:
+ if name == "BEGIN":
+ if value in ("STANDARD", "DAYLIGHT"):
+ # Process component
+ pass
+ else:
+ raise ValueError("unknown component: "+value)
+ comptype = value
+ founddtstart = False
+ tzoffsetfrom = None
+ tzoffsetto = None
+ rrulelines = []
+ tzname = None
+ elif name == "END":
+ if value == "VTIMEZONE":
+ if comptype:
+ raise ValueError("component not closed: "+comptype)
+ if not tzid:
+ raise ValueError("mandatory TZID not found")
+ if not comps:
+ raise ValueError(
+ "at least one component is needed")
+ # Process vtimezone
+ self._vtz[tzid] = _tzicalvtz(tzid, comps)
+ invtz = False
+ elif value == comptype:
+ if not founddtstart:
+ raise ValueError("mandatory DTSTART not found")
+ if tzoffsetfrom is None:
+ raise ValueError(
+ "mandatory TZOFFSETFROM not found")
+ if tzoffsetto is None:
+ raise ValueError(
+ "mandatory TZOFFSETFROM not found")
+ # Process component
+ rr = None
+ if rrulelines:
+ rr = rrule.rrulestr("\n".join(rrulelines),
+ compatible=True,
+ ignoretz=True,
+ cache=True)
+ comp = _tzicalvtzcomp(tzoffsetfrom, tzoffsetto,
+ (comptype == "DAYLIGHT"),
+ tzname, rr)
+ comps.append(comp)
+ comptype = None
+ else:
+ raise ValueError("invalid component end: "+value)
+ elif comptype:
+ if name == "DTSTART":
+ rrulelines.append(line)
+ founddtstart = True
+ elif name in ("RRULE", "RDATE", "EXRULE", "EXDATE"):
+ rrulelines.append(line)
+ elif name == "TZOFFSETFROM":
+ if parms:
+ raise ValueError(
+ "unsupported %s parm: %s " % (name, parms[0]))
+ tzoffsetfrom = self._parse_offset(value)
+ elif name == "TZOFFSETTO":
+ if parms:
+ raise ValueError(
+ "unsupported TZOFFSETTO parm: "+parms[0])
+ tzoffsetto = self._parse_offset(value)
+ elif name == "TZNAME":
+ if parms:
+ raise ValueError(
+ "unsupported TZNAME parm: "+parms[0])
+ tzname = value
+ elif name == "COMMENT":
+ pass
+ else:
+ raise ValueError("unsupported property: "+name)
+ else:
+ if name == "TZID":
+ if parms:
+ raise ValueError(
+ "unsupported TZID parm: "+parms[0])
+ tzid = value
+ elif name in ("TZURL", "LAST-MODIFIED", "COMMENT"):
+ pass
+ else:
+ raise ValueError("unsupported property: "+name)
+ elif name == "BEGIN" and value == "VTIMEZONE":
+ tzid = None
+ comps = []
+ invtz = True
+
+ def __repr__(self):
+ return "%s(%s)" % (self.__class__.__name__, repr(self._s))
+
+if sys.platform != "win32":
+ TZFILES = ["/etc/localtime", "localtime"]
+ TZPATHS = ["/usr/share/zoneinfo", "/usr/lib/zoneinfo", "/etc/zoneinfo"]
+else:
+ TZFILES = []
+ TZPATHS = []
+
+
+def gettz(name=None):
+ tz = None
+ if not name:
+ try:
+ name = os.environ["TZ"]
+ except KeyError:
+ pass
+ if name is None or name == ":":
+ for filepath in TZFILES:
+ if not os.path.isabs(filepath):
+ filename = filepath
+ for path in TZPATHS:
+ filepath = os.path.join(path, filename)
+ if os.path.isfile(filepath):
+ break
+ else:
+ continue
+ if os.path.isfile(filepath):
+ try:
+ tz = tzfile(filepath)
+ break
+ except (IOError, OSError, ValueError):
+ pass
+ else:
+ 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):
+ filepath = filepath.replace(' ', '_')
+ if not os.path.isfile(filepath):
+ continue
+ try:
+ tz = tzfile(filepath)
+ break
+ except (IOError, OSError, ValueError):
+ pass
+ else:
+ tz = None
+ if tzwin is not None:
+ try:
+ tz = tzwin(name)
+ except WindowsError:
+ tz = None
+ 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":
+ try:
+ tz = tzstr(name)
+ except ValueError:
+ pass
+ break
+ else:
+ if name in ("GMT", "UTC"):
+ tz = tzutc()
+ elif name in time.tzname:
+ tz = tzlocal()
+ return tz
+
+def _total_seconds(td):
+ # Python 2.6 doesn't have a total_seconds() method on timedelta objects
+ return ((td.seconds + td.days * 86400) * 1000000 +
+ td.microseconds) // 1000000
+
+_total_seconds = getattr(datetime.timedelta, 'total_seconds', _total_seconds)
+
+def _datetime_to_timestamp(dt):
+ """
+ Convert a :class:`datetime.datetime` object to an epoch timestamp in
seconds
+ since January 1, 1970, ignoring the time zone.
+ """
+ return _total_seconds((dt.replace(tzinfo=None) - EPOCH))
+
+class _ContextWrapper(object):
+ """
+ Class for wrapping contexts so that they are passed through in a
+ with statement.
+ """
+ def __init__(self, context):
+ self.context = context
+
+ def __enter__(self):
+ return self.context
+
+ def __exit__(*args, **kwargs):
+ pass
+
+# vim:ts=4:sw=4:et
diff --git a/ooni/contrib/dateutil/tz/win.py b/ooni/contrib/dateutil/tz/win.py
new file mode 100644
index 0000000..7203c78
--- /dev/null
+++ b/ooni/contrib/dateutil/tz/win.py
@@ -0,0 +1,354 @@
+# 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 tzname_in_python2, _tzinfo
+
+__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(_tzinfo):
+ """tzinfo class based on win32's timezones available in the registry."""
+ def __eq__(self, other):
+ # Compare on all relevant dimensions, including name.
+ if not isinstance(other, tzwinbase):
+ return NotImplemented
+
+ return (self._stdoffset == other._stdoffset and
+ self._dstoffset == other._dstoffset 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._stdname == other._stdname and
+ self._dstname == other._dstname)
+
+ def __ne__(self, other):
+ return not (self == other)
+
+ def utcoffset(self, dt):
+ isdst = self._isdst(dt)
+
+ if isdst is None:
+ return None
+ elif isdst:
+ return datetime.timedelta(minutes=self._dstoffset)
+ else:
+ return datetime.timedelta(minutes=self._stdoffset)
+
+ def dst(self, dt):
+ isdst = self._isdst(dt)
+
+ if isdst is None:
+ return None
+ elif isdst:
+ return self._dst_base_offset
+ else:
+ return datetime.timedelta(0)
+
+ @tzname_in_python2
+ def tzname(self, dt):
+ if self._isdst(dt):
+ return self._dstname
+ else:
+ return self._stdname
+
+ @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):
+ """ Gets the transition day and times for a given year """
+ 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 _isdst(self, dt):
+ if not self._dstmonth:
+ # dstmonth == 0 signals the zone has no daylight saving time
+ return False
+ elif dt is None:
+ return None
+
+ dston, dstoff = self.transitions(dt.year)
+
+ naive_dt = dt.replace(tzinfo=None)
+
+ # Check to see if we're in an ambiguous time
+ if self._fold is not None:
+ dst_base_offset = self._dst_base_offset
+ if dstoff <= naive_dt < dstoff + dst_base_offset:
+ return self._fold
+
+ if dston < dstoff:
+ return dston <= naive_dt < dstoff
+ else:
+ return not dstoff <= naive_dt < dston
+
+ @property
+ def _dst_base_offset(self):
+ # Get the offset between DST and STD
+ return datetime.timedelta(minutes=(self._dstoffset - self._stdoffset))
+
+
+class tzwin(tzwinbase):
+
+ def __init__(self, name):
+ super(tzwin, self).__init__()
+
+ 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._stdname = keydict["Std"]
+ self._dstname = keydict["Dlt"]
+
+ 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
+
+ # 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]
+
+ def __repr__(self):
+ return "tzwin(%s)" % repr(self._name)
+
+ def __reduce__(self):
+ return (self.__class__, (self._name,))
+
+
+class tzwinlocal(tzwinbase):
+ def __init__(self):
+ super(tzwinlocal, self).__init__()
+ with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
+ with winreg.OpenKey(handle, TZLOCALKEYNAME) as tzlocalkey:
+ keydict = valuestodict(tzlocalkey)
+
+ self._stdname = keydict["StandardName"]
+ self._dstname = keydict["DaylightName"]
+
+ try:
+ tzkeyname = text_type('{kn}\{sn}').format(kn=TZKEYNAME,
+ sn=self._stdname)
+ with winreg.OpenKey(handle, tzkeyname) as tzkey:
+ _keydict = valuestodict(tzkey)
+ self._display = _keydict["Display"]
+ except OSError:
+ self._display = None
+
+ self._stdoffset = -keydict["Bias"]-keydict["StandardBias"]
+ self._dstoffset = self._stdoffset-keydict["DaylightBias"]
+
+ # 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]
+
+ def __repr__(self):
+ return "tzwinlocal()"
+
+ def __str__(self):
+ # str will return the standard name, not the daylight name.
+ return "tzwinlocal(%s)" % repr(self._stdname)
+
+ 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
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