mirror of
https://github.com/SickGear/SickGear.git
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177 lines
5.2 KiB
Python
177 lines
5.2 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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SubRip's time format parser: HH:MM:SS,mmm
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"""
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import re
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from datetime import time
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from pysrt.srtexc import InvalidTimeString
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from pysrt.comparablemixin import ComparableMixin
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from pysrt.compat import str, basestring
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class TimeItemDescriptor(object):
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# pylint: disable-msg=R0903
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def __init__(self, ratio, super_ratio=0):
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self.ratio = int(ratio)
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self.super_ratio = int(super_ratio)
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def _get_ordinal(self, instance):
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if self.super_ratio:
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return instance.ordinal % self.super_ratio
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return instance.ordinal
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def __get__(self, instance, klass):
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if instance is None:
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raise AttributeError
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return self._get_ordinal(instance) // self.ratio
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def __set__(self, instance, value):
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part = self._get_ordinal(instance) - instance.ordinal % self.ratio
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instance.ordinal += value * self.ratio - part
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class SubRipTime(ComparableMixin):
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TIME_PATTERN = '%02d:%02d:%02d,%03d'
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TIME_REPR = 'SubRipTime(%d, %d, %d, %d)'
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RE_TIME_SEP = re.compile(r'\:|\.|\,')
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RE_INTEGER = re.compile(r'^(\d+)')
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SECONDS_RATIO = 1000
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MINUTES_RATIO = SECONDS_RATIO * 60
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HOURS_RATIO = MINUTES_RATIO * 60
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hours = TimeItemDescriptor(HOURS_RATIO)
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minutes = TimeItemDescriptor(MINUTES_RATIO, HOURS_RATIO)
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seconds = TimeItemDescriptor(SECONDS_RATIO, MINUTES_RATIO)
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milliseconds = TimeItemDescriptor(1, SECONDS_RATIO)
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def __init__(self, hours=0, minutes=0, seconds=0, milliseconds=0):
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"""
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SubRipTime(hours, minutes, seconds, milliseconds)
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All arguments are optional and have a default value of 0.
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"""
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super(SubRipTime, self).__init__()
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self.ordinal = hours * self.HOURS_RATIO \
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+ minutes * self.MINUTES_RATIO \
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+ seconds * self.SECONDS_RATIO \
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+ milliseconds
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def __repr__(self):
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return self.TIME_REPR % tuple(self)
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def __str__(self):
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if self.ordinal < 0:
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# Represent negative times as zero
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return str(SubRipTime.from_ordinal(0))
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return self.TIME_PATTERN % tuple(self)
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def _compare(self, other, method):
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return super(SubRipTime, self)._compare(self.coerce(other), method)
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def _cmpkey(self):
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return self.ordinal
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def __add__(self, other):
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return self.from_ordinal(self.ordinal + self.coerce(other).ordinal)
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def __iadd__(self, other):
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self.ordinal += self.coerce(other).ordinal
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return self
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def __sub__(self, other):
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return self.from_ordinal(self.ordinal - self.coerce(other).ordinal)
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def __isub__(self, other):
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self.ordinal -= self.coerce(other).ordinal
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return self
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def __mul__(self, ratio):
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return self.from_ordinal(int(round(self.ordinal * ratio)))
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def __imul__(self, ratio):
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self.ordinal = int(round(self.ordinal * ratio))
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return self
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@classmethod
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def coerce(cls, other):
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"""
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Coerce many types to SubRipTime instance.
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Supported types:
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- str/unicode
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- int/long
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- datetime.time
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- any iterable
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- dict
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"""
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if isinstance(other, SubRipTime):
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return other
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if isinstance(other, basestring):
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return cls.from_string(other)
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if isinstance(other, int):
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return cls.from_ordinal(other)
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if isinstance(other, time):
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return cls.from_time(other)
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try:
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return cls(**other)
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except TypeError:
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return cls(*other)
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def __iter__(self):
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yield self.hours
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yield self.minutes
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yield self.seconds
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yield self.milliseconds
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def shift(self, *args, **kwargs):
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"""
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shift(hours, minutes, seconds, milliseconds)
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All arguments are optional and have a default value of 0.
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"""
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if 'ratio' in kwargs:
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self *= kwargs.pop('ratio')
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self += self.__class__(*args, **kwargs)
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@classmethod
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def from_ordinal(cls, ordinal):
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"""
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int -> SubRipTime corresponding to a total count of milliseconds
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"""
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return cls(milliseconds=int(ordinal))
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@classmethod
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def from_string(cls, source):
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"""
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str/unicode(HH:MM:SS,mmm) -> SubRipTime corresponding to serial
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raise InvalidTimeString
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"""
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items = cls.RE_TIME_SEP.split(source)
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if len(items) != 4:
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raise InvalidTimeString
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return cls(*(cls.parse_int(i) for i in items))
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@classmethod
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def parse_int(cls, digits):
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try:
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return int(digits)
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except ValueError:
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match = cls.RE_INTEGER.match(digits)
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if match:
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return int(match.group())
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return 0
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@classmethod
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def from_time(cls, source):
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"""
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datetime.time -> SubRipTime corresponding to time object
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"""
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return cls(hours=source.hour, minutes=source.minute,
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seconds=source.second, milliseconds=source.microsecond // 1000)
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def to_time(self):
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"""
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Convert SubRipTime instance into a pure datetime.time object
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"""
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return time(self.hours, self.minutes, self.seconds,
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self.milliseconds * 1000)
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