Sergey Sharybin
7f42fdf5e8
Just some glue logic to query progress and results from benchmark. Needed to move files around, so oth standalone and addon are happy.
550 lines
23 KiB
Python
550 lines
23 KiB
Python
# -*- coding: utf-8 -*-
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import datetime
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import calendar
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import operator
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from math import copysign
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from six import integer_types
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from warnings import warn
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from ._common import weekday
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MO, TU, WE, TH, FR, SA, SU = weekdays = tuple(weekday(x) for x in range(7))
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__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
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class relativedelta(object):
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"""
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The relativedelta type is based on the specification of the excellent
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work done by M.-A. Lemburg in his
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`mx.DateTime <http://www.egenix.com/files/python/mxDateTime.html>`_ extension.
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However, notice that this type does *NOT* implement the same algorithm as
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his work. Do *NOT* expect it to behave like mx.DateTime's counterpart.
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There are two different ways to build a relativedelta instance. The
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first one is passing it two date/datetime classes::
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relativedelta(datetime1, datetime2)
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The second one is passing it any number of the following keyword arguments::
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relativedelta(arg1=x,arg2=y,arg3=z...)
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year, month, day, hour, minute, second, microsecond:
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Absolute information (argument is singular); adding or subtracting a
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relativedelta with absolute information does not perform an aritmetic
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operation, but rather REPLACES the corresponding value in the
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original datetime with the value(s) in relativedelta.
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years, months, weeks, days, hours, minutes, seconds, microseconds:
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Relative information, may be negative (argument is plural); adding
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or subtracting a relativedelta with relative information performs
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the corresponding aritmetic operation on the original datetime value
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with the information in the relativedelta.
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weekday:
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One of the weekday instances (MO, TU, etc). These instances may
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receive a parameter N, specifying the Nth weekday, which could
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be positive or negative (like MO(+1) or MO(-2). Not specifying
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it is the same as specifying +1. You can also use an integer,
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where 0=MO.
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leapdays:
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Will add given days to the date found, if year is a leap
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year, and the date found is post 28 of february.
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yearday, nlyearday:
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Set the yearday or the non-leap year day (jump leap days).
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These are converted to day/month/leapdays information.
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Here is the behavior of operations with relativedelta:
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1. Calculate the absolute year, using the 'year' argument, or the
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original datetime year, if the argument is not present.
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2. Add the relative 'years' argument to the absolute year.
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3. Do steps 1 and 2 for month/months.
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4. Calculate the absolute day, using the 'day' argument, or the
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original datetime day, if the argument is not present. Then,
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subtract from the day until it fits in the year and month
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found after their operations.
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5. Add the relative 'days' argument to the absolute day. Notice
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that the 'weeks' argument is multiplied by 7 and added to
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'days'.
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6. Do steps 1 and 2 for hour/hours, minute/minutes, second/seconds,
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microsecond/microseconds.
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7. If the 'weekday' argument is present, calculate the weekday,
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with the given (wday, nth) tuple. wday is the index of the
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weekday (0-6, 0=Mon), and nth is the number of weeks to add
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forward or backward, depending on its signal. Notice that if
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the calculated date is already Monday, for example, using
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(0, 1) or (0, -1) won't change the day.
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"""
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def __init__(self, dt1=None, dt2=None,
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years=0, months=0, days=0, leapdays=0, weeks=0,
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hours=0, minutes=0, seconds=0, microseconds=0,
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year=None, month=None, day=None, weekday=None,
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yearday=None, nlyearday=None,
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hour=None, minute=None, second=None, microsecond=None):
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# Check for non-integer values in integer-only quantities
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if any(x is not None and x != int(x) for x in (years, months)):
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raise ValueError("Non-integer years and months are "
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"ambiguous and not currently supported.")
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if dt1 and dt2:
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# datetime is a subclass of date. So both must be date
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if not (isinstance(dt1, datetime.date) and
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isinstance(dt2, datetime.date)):
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raise TypeError("relativedelta only diffs datetime/date")
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# We allow two dates, or two datetimes, so we coerce them to be
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# of the same type
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if (isinstance(dt1, datetime.datetime) !=
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isinstance(dt2, datetime.datetime)):
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if not isinstance(dt1, datetime.datetime):
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dt1 = datetime.datetime.fromordinal(dt1.toordinal())
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elif not isinstance(dt2, datetime.datetime):
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dt2 = datetime.datetime.fromordinal(dt2.toordinal())
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self.years = 0
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self.months = 0
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self.days = 0
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self.leapdays = 0
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self.hours = 0
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self.minutes = 0
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self.seconds = 0
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self.microseconds = 0
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self.year = None
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self.month = None
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self.day = None
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self.weekday = None
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self.hour = None
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self.minute = None
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self.second = None
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self.microsecond = None
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self._has_time = 0
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# Get year / month delta between the two
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months = (dt1.year - dt2.year) * 12 + (dt1.month - dt2.month)
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self._set_months(months)
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# Remove the year/month delta so the timedelta is just well-defined
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# time units (seconds, days and microseconds)
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dtm = self.__radd__(dt2)
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# If we've overshot our target, make an adjustment
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if dt1 < dt2:
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compare = operator.gt
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increment = 1
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else:
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compare = operator.lt
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increment = -1
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while compare(dt1, dtm):
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months += increment
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self._set_months(months)
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dtm = self.__radd__(dt2)
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# Get the timedelta between the "months-adjusted" date and dt1
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delta = dt1 - dtm
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self.seconds = delta.seconds + delta.days * 86400
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self.microseconds = delta.microseconds
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else:
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# Relative information
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self.years = years
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self.months = months
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self.days = days + weeks * 7
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self.leapdays = leapdays
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self.hours = hours
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self.minutes = minutes
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self.seconds = seconds
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self.microseconds = microseconds
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# Absolute information
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self.year = year
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self.month = month
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self.day = day
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self.hour = hour
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self.minute = minute
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self.second = second
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self.microsecond = microsecond
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if any(x is not None and int(x) != x
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for x in (year, month, day, hour,
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minute, second, microsecond)):
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# For now we'll deprecate floats - later it'll be an error.
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warn("Non-integer value passed as absolute information. " +
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"This is not a well-defined condition and will raise " +
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"errors in future versions.", DeprecationWarning)
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if isinstance(weekday, integer_types):
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self.weekday = weekdays[weekday]
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else:
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self.weekday = weekday
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yday = 0
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if nlyearday:
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yday = nlyearday
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elif yearday:
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yday = yearday
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if yearday > 59:
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self.leapdays = -1
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if yday:
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ydayidx = [31, 59, 90, 120, 151, 181, 212,
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243, 273, 304, 334, 366]
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for idx, ydays in enumerate(ydayidx):
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if yday <= ydays:
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self.month = idx+1
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if idx == 0:
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self.day = yday
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else:
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self.day = yday-ydayidx[idx-1]
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break
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else:
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raise ValueError("invalid year day (%d)" % yday)
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self._fix()
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def _fix(self):
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if abs(self.microseconds) > 999999:
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s = _sign(self.microseconds)
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div, mod = divmod(self.microseconds * s, 1000000)
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self.microseconds = mod * s
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self.seconds += div * s
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if abs(self.seconds) > 59:
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s = _sign(self.seconds)
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div, mod = divmod(self.seconds * s, 60)
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self.seconds = mod * s
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self.minutes += div * s
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if abs(self.minutes) > 59:
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s = _sign(self.minutes)
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div, mod = divmod(self.minutes * s, 60)
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self.minutes = mod * s
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self.hours += div * s
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if abs(self.hours) > 23:
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s = _sign(self.hours)
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div, mod = divmod(self.hours * s, 24)
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self.hours = mod * s
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self.days += div * s
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if abs(self.months) > 11:
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s = _sign(self.months)
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div, mod = divmod(self.months * s, 12)
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self.months = mod * s
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self.years += div * s
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if (self.hours or self.minutes or self.seconds or self.microseconds
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or self.hour is not None or self.minute is not None or
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self.second is not None or self.microsecond is not None):
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self._has_time = 1
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else:
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self._has_time = 0
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@property
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def weeks(self):
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return self.days // 7
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@weeks.setter
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def weeks(self, value):
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self.days = self.days - (self.weeks * 7) + value * 7
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def _set_months(self, months):
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self.months = months
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if abs(self.months) > 11:
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s = _sign(self.months)
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div, mod = divmod(self.months * s, 12)
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self.months = mod * s
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self.years = div * s
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else:
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self.years = 0
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def normalized(self):
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"""
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Return a version of this object represented entirely using integer
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values for the relative attributes.
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>>> relativedelta(days=1.5, hours=2).normalized()
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relativedelta(days=1, hours=14)
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:return:
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Returns a :class:`dateutil.relativedelta.relativedelta` object.
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"""
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# Cascade remainders down (rounding each to roughly nearest microsecond)
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days = int(self.days)
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hours_f = round(self.hours + 24 * (self.days - days), 11)
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hours = int(hours_f)
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minutes_f = round(self.minutes + 60 * (hours_f - hours), 10)
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minutes = int(minutes_f)
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seconds_f = round(self.seconds + 60 * (minutes_f - minutes), 8)
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seconds = int(seconds_f)
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microseconds = round(self.microseconds + 1e6 * (seconds_f - seconds))
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# Constructor carries overflow back up with call to _fix()
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return self.__class__(years=self.years, months=self.months,
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days=days, hours=hours, minutes=minutes,
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seconds=seconds, microseconds=microseconds,
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leapdays=self.leapdays, year=self.year,
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month=self.month, day=self.day,
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weekday=self.weekday, hour=self.hour,
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minute=self.minute, second=self.second,
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microsecond=self.microsecond)
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def __add__(self, other):
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if isinstance(other, relativedelta):
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return self.__class__(years=other.years + self.years,
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months=other.months + self.months,
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days=other.days + self.days,
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hours=other.hours + self.hours,
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minutes=other.minutes + self.minutes,
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seconds=other.seconds + self.seconds,
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microseconds=(other.microseconds +
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self.microseconds),
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leapdays=other.leapdays or self.leapdays,
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year=(other.year if other.year is not None
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else self.year),
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month=(other.month if other.month is not None
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else self.month),
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day=(other.day if other.day is not None
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else self.day),
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weekday=(other.weekday if other.weekday is not None
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else self.weekday),
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hour=(other.hour if other.hour is not None
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else self.hour),
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minute=(other.minute if other.minute is not None
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else self.minute),
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second=(other.second if other.second is not None
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else self.second),
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microsecond=(other.microsecond if other.microsecond
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is not None else
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self.microsecond))
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if isinstance(other, datetime.timedelta):
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return self.__class__(years=self.years,
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months=self.months,
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days=self.days + other.days,
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hours=self.hours,
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minutes=self.minutes,
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seconds=self.seconds + other.seconds,
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microseconds=self.microseconds + other.microseconds,
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leapdays=self.leapdays,
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year=self.year,
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month=self.month,
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day=self.day,
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weekday=self.weekday,
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hour=self.hour,
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minute=self.minute,
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second=self.second,
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microsecond=self.microsecond)
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if not isinstance(other, datetime.date):
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return NotImplemented
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elif self._has_time and not isinstance(other, datetime.datetime):
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other = datetime.datetime.fromordinal(other.toordinal())
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year = (self.year or other.year)+self.years
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month = self.month or other.month
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if self.months:
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assert 1 <= abs(self.months) <= 12
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month += self.months
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if month > 12:
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year += 1
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month -= 12
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elif month < 1:
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year -= 1
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month += 12
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day = min(calendar.monthrange(year, month)[1],
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self.day or other.day)
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repl = {"year": year, "month": month, "day": day}
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for attr in ["hour", "minute", "second", "microsecond"]:
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value = getattr(self, attr)
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if value is not None:
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repl[attr] = value
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days = self.days
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if self.leapdays and month > 2 and calendar.isleap(year):
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days += self.leapdays
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ret = (other.replace(**repl)
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+ datetime.timedelta(days=days,
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hours=self.hours,
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minutes=self.minutes,
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seconds=self.seconds,
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microseconds=self.microseconds))
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if self.weekday:
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weekday, nth = self.weekday.weekday, self.weekday.n or 1
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jumpdays = (abs(nth) - 1) * 7
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if nth > 0:
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jumpdays += (7 - ret.weekday() + weekday) % 7
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else:
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jumpdays += (ret.weekday() - weekday) % 7
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jumpdays *= -1
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ret += datetime.timedelta(days=jumpdays)
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return ret
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def __radd__(self, other):
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return self.__add__(other)
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def __rsub__(self, other):
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return self.__neg__().__radd__(other)
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def __sub__(self, other):
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if not isinstance(other, relativedelta):
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return NotImplemented # In case the other object defines __rsub__
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return self.__class__(years=self.years - other.years,
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months=self.months - other.months,
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days=self.days - other.days,
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hours=self.hours - other.hours,
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minutes=self.minutes - other.minutes,
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seconds=self.seconds - other.seconds,
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microseconds=self.microseconds - other.microseconds,
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leapdays=self.leapdays or other.leapdays,
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year=(self.year if self.year is not None
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else other.year),
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month=(self.month if self.month is not None else
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other.month),
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day=(self.day if self.day is not None else
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other.day),
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weekday=(self.weekday if self.weekday is not None else
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other.weekday),
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hour=(self.hour if self.hour is not None else
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other.hour),
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minute=(self.minute if self.minute is not None else
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other.minute),
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second=(self.second if self.second is not None else
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other.second),
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microsecond=(self.microsecond if self.microsecond
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is not None else
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other.microsecond))
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def __neg__(self):
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return self.__class__(years=-self.years,
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months=-self.months,
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days=-self.days,
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hours=-self.hours,
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minutes=-self.minutes,
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seconds=-self.seconds,
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microseconds=-self.microseconds,
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leapdays=self.leapdays,
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year=self.year,
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month=self.month,
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day=self.day,
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weekday=self.weekday,
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hour=self.hour,
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minute=self.minute,
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second=self.second,
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microsecond=self.microsecond)
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def __bool__(self):
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return not (not self.years and
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not self.months and
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not self.days and
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not self.hours and
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not self.minutes and
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not self.seconds and
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not self.microseconds and
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not self.leapdays and
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self.year is None and
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self.month is None and
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self.day is None and
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self.weekday is None and
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self.hour is None and
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self.minute is None and
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self.second is None and
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self.microsecond is None)
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# Compatibility with Python 2.x
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__nonzero__ = __bool__
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def __mul__(self, other):
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try:
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f = float(other)
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except TypeError:
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return NotImplemented
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return self.__class__(years=int(self.years * f),
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months=int(self.months * f),
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days=int(self.days * f),
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hours=int(self.hours * f),
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minutes=int(self.minutes * f),
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seconds=int(self.seconds * f),
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microseconds=int(self.microseconds * f),
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leapdays=self.leapdays,
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year=self.year,
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month=self.month,
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day=self.day,
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weekday=self.weekday,
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hour=self.hour,
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minute=self.minute,
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second=self.second,
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microsecond=self.microsecond)
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__rmul__ = __mul__
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def __eq__(self, other):
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if not isinstance(other, relativedelta):
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return NotImplemented
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if self.weekday or other.weekday:
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if not self.weekday or not other.weekday:
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return False
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if self.weekday.weekday != other.weekday.weekday:
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return False
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n1, n2 = self.weekday.n, other.weekday.n
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if n1 != n2 and not ((not n1 or n1 == 1) and (not n2 or n2 == 1)):
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return False
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return (self.years == other.years and
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self.months == other.months and
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self.days == other.days and
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self.hours == other.hours and
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self.minutes == other.minutes and
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self.seconds == other.seconds and
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self.microseconds == other.microseconds and
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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)
|
|
|
|
__hash__ = None
|
|
|
|
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
|