300 lines
9.6 KiB
Python
300 lines
9.6 KiB
Python
#!/usr/bin/python
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import sys, os
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sys.path.append(os.path.dirname(__file__))
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import icalendar
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reload(icalendar)
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from icalendar import Calendar, cal, prop
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from dateutil import tz as tzmod
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from cStringIO import StringIO
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import pytz
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import urllib2
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import datetime, time
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import rruler
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reload(rruler)
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SECONDS_PER_DAY=24*60*60
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def seconds(timediff):
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return SECONDS_PER_DAY * timediff.days + timediff.seconds
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class ICalReader:
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def __init__(self, data):
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self.events = []
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self.timezones = {}
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self.raw_data = data
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self.readEvents()
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def readEvents(self):
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self.events = []
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self.timezones = {}
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parser = Calendar.from_string(self.raw_data)
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tzs = parser.walk("vtimezone")
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self.parseTzs(tzs)
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events = parser.walk("vevent")
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for event in events:
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res = self.parseEvent(event)
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if res:
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self.events.append(res)
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def parseTzs(self, tzs):
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if not tzs:
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return
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for tz in tzs:
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if 'X-LIC-LOCATION' in tz:
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del tz['X-LIC-LOCATION']
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data = ''.join([str(i) for i in tzs])
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data = '\r\n'.join([i for i in data.splitlines() if i.strip()])
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fd = StringIO(data)
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times = tzmod.tzical(fd)
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for tz in times.keys():
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self.timezones[tz] = times.get(tz)
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def parseEvent(self, e):
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for k in ["dtstart", "dtend", "summary"]:
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if not k in e:
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return
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if not isinstance(e['dtstart'].dt, datetime.datetime):
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return
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return ICalEvent.from_event(e, self)
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startDate = endDate = rule = summary = None
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startDate = self.parseDate(e.get("dtstart"))
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endDate = self.parseDate(e.get("dtend"))
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rule = e.get("RRULE")
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summary = e.get("summary")
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if e.get("exdate"):
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event.addExceptionDate(e['EXDATE'].ical()[7:])
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if not startDate or not endDate or not summary: # Bad event
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return
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event = ICalEvent()
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event.raw_data = str(e)
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event.summary = summary
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event.startDate = startDate
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event.endDate = endDate
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if rule:
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event.addRecurrenceRule(rule)
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return event
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@staticmethod
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def toTz(date, tz):
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return datetime.datetime(date.year, date.month, date.day, date.hour, date.minute, date.second, tzinfo=tz)
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def parseDate(self, date):
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if not date:
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return
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tz = pytz.UTC
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if 'tzid' in date.params:
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tz = self.timezones[date.params['tzid']]
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for attr in ['hour', 'minute', 'second']:
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if not hasattr(date.dt, attr):
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return
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return self.toTz(date.dt, tz)
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# return datetime.datetime(date.dt.year, date.dt.month, date.dt.day, date.dt.hour, date.dt.minute, date.dt.second, tzinfo=tz)
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def selectEvents(self, selectFunction):
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self.events.sort()
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events = filter(selectFunction, self.events)
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return events
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def todaysEvents(self, event):
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return event.startsToday()
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def tomorrowsEvents(self, event):
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return event.startsTomorrow()
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def eventsFor(self, date):
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self.events.sort()
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ret = []
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for event in self.events:
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if event.startsOn(date):
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ret.append(event)
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return re
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#class ICalEvent:
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# def __init__(self):
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# self.exceptionDates = []
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# self.dateSet = None
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#
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# def __str__(self):
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# return "%s (%s - %s)" % (self.summary, self.startDate, self.endDate)
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class ICalEvent(cal.Event):
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def __init__(self, *args, **kwargs):
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self.exceptionDates = []
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self.dateSet = None
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self.__parent = super(ICalEvent, self)
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self.__parent.__init__(self, *args, **kwargs)
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@classmethod
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def from_event(cls, event, parent):
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x = cls(**dict(event))
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x.__dict__ = event.__dict__
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x.summary = x['summary']
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x.timezone = x['dtstart'].dt.tzinfo
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x.startDate = parent.parseDate(x['dtstart'])
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x.endDate = parent.parseDate(x['dtend'])
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if not x.timezone:
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x.timezone = pytz.UTC
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x.startDate = parent.parseDate(x['dtstart'])
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x.endDate = parent.parseDate(x['dtend'])
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x.raw_data = str(x)
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if 'rrule' in event:
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x.addRecurrenceRule(event['rrule'])
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return x
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def __str__(self):
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return "%s (%s - %s)" % (self.summary, self.startDate, self.endDate)
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def __eq__(self, otherEvent):
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return self.startDate == otherEvent.startDate
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def __lt__(self, otherEvent):
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return self.startDate < otherEvent.startDate
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def __gt__(self, otherEvent):
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return self.startDate > otherEvent.startDate
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def __ge__(self, otherEvent):
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return self.startDate >= otherEvent.startDate
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def __le__(self, otherEvent):
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return self.startDate <= otherEvent.startDate
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def addExceptionDate(self, date):
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self.exceptionDates.append(date)
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def addRecurrenceRule(self, rule):
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self.dateSet = DateSet(self.startDate, self.endDate, rule)
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def startsToday(self):
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return self.startsOn(datetime.datetime.today())
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def startsTomorrow(self):
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tomorrow = datetime.datetime.fromtimestamp(time.time() + SECONDS_PER_DAY)
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return self.startsOn(tomorrow)
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def startsOn(self, date):
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return (self.startDate.year == date.year and
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self.startDate.month == date.month and
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self.startDate.day == date.day or
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(self.dateSet and self.dateSet.includes(date)))
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def startTime(self):
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return self.startDate
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def schedule(self, timezone=None):
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if not timezone:
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return "%s UTC: %s" % (self.startDate.strftime("%d %b %H:%M"), self.summary.replace('Meeting','').strip())
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return "%s: %s" % (self.startDate.astimezone(pytz.timezone(timezone)).strftime("%d %b %H:%M %Z"), self.summary.replace('Meeting','').strip())
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def is_on(self):
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return self.startDate < datetime.datetime.now(pytz.UTC) and self.endDate > datetime.datetime.now(pytz.UTC)
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def has_passed(self):
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return self.endDate < datetime.datetime.now(pytz.UTC)
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def seconds_to_go(self):
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return seconds(self.startDate - datetime.datetime.now(pytz.UTC))
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def seconds_ago(self):
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return seconds(datetime.datetime.now(pytz.UTC) - self.endDate)
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def time_to_go(self):
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if self.endDate < datetime.datetime.now(pytz.UTC):
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return False
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delta = self.startDate - datetime.datetime.now(pytz.UTC)
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s = ''
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if delta.days:
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if delta.days != 1:
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s = 's'
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return '%d day%s' % (delta.days, s)
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h = ''
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if delta.seconds > 7200:
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s = 's'
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if delta.seconds > 3600:
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h = '%d hour%s ' % (int(delta.seconds/3600),s)
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s = ''
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minutes = (delta.seconds % 3600) / 60
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if minutes != 1:
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s = 's'
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return '%s%d minute%s' % (h,minutes,s)
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class DateSet:
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def __init__(self, startDate, endDate, rule):
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self.startDate = startDate
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self.endDate = endDate
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self.frequency = None
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self.count = None
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self.untilDate = None
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self.byMonth = None
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self.byDate = None
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self.parseRecurrenceRule(rule)
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def parseRecurrenceRule(self, rule):
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freq = rruler.rrule_map[rule.pop('freq')[0]]
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self.recurrence = rruler.rrule_wrapper(freq, **rule)
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# if 'freq' in rule:
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# self.frequency = rule['freq']
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# if 'count' in rule:
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# self.count = rule['count']
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# if 'until' in rule:
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## self.untilDate = rule['until'][0].strftime("%Y%m%dT%H%M%SZ")
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# self.untilDate = rule['until'][0]
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# if 'interval' in rule:
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# self.interval = rule['interval']
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# if 'bymonth' in rule:
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# self.myMonth = rule['bymonth']
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# if 'byday' in rule:
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# self.byDay = rule['byday']
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def includes(self, date):
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if isinstance(date, datetime.datetime):
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date = date.date()
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return date in [x.date() for x in list(self.recurrence)] or date == self.startDate.date()
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# if date == self.startDate:
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# return True
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#
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# if self.untilDate and date > self.untilDate:
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# return False
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#
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# if self.frequency == 'DAILY':
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# increment = 1
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# if self.interval:
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# increment = self.interval
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# d = self.startDate
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# counter = 0
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# while(d < date):
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# if self.count:
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# counter += 1
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# if counter >= self.count:
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# return False
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#
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# d = d.replace(day=d.day+1)
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#
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# if (d.day == date.day and
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# d.year == date.year and
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# d.month == date.month):
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# return True
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#
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# elif self.frequency == 'WEEKLY':
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# if self.startDate.weekday() == date.weekday():
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# return True
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# else:
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# if self.endDate:
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# for n in range(0, self.endDate.day - self.startDate.day):
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# newDate = self.startDate.replace(day=self.startDate.day+n)
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# if newDate.weekday() == date.weekday():
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# return True
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#
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# elif self.frequency == 'MONTHLY':
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# if self.startDate.month == date.month:
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# if self.startDate.weekday() == date.weekday():
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# return True
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#
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# elif self.frequency == 'YEARLY':
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# if (self.startDate.month == date.month) and (self.startDate.day == date.day):
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# return True
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#
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# return False
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