+ for blkl in mainBlacklist:
+ while blkl in cal.contents: del cal.contents[blkl]
+
+ return cal
+
+def exDate(cal):
+ '''Replacing multi-value EXDATES with multiple single-value EXDATES'''
+ if "facebook" in ruleConfig:
+ if ruleConfig["facebook"] == True: return cal
+
+ from datetime import datetime
+ from pytz import timezone
+
+ default = timezone(ruleConfig["defaultTZ"])
+
+ for event in cal.vevent_list:
+ if not event.contents.has_key(u'exdate'): continue
+ dates = event.exdate.value
+
+ del event.contents[u'exdate']
+
+ for date in dates:
+ if isinstance(date, datetime):
+ if date.tzinfo is None: date = date.replace(tzinfo = default)
+ date = date.astimezone(vobject.icalendar.utc)
+ entry = event.add(u'exdate')
+ entry.value = [date]
+
+ return cal
+
+def utcise(cal):
+ '''Removing local timezones in favour of UTC. If the remote calendar specifies a timezone
+ then use it, otherwise assume it's in the user-specified or default values'''
+
+ from datetime import datetime
+ from pytz import timezone
+
+ default = timezone(ruleConfig["defaultTZ"])
+
+ for event in cal.vevent_list:
+ dtstart = getattr(event, 'dtstart', None)
+ dtend = getattr(event, 'dtend', None)
+
+ for i in (dtstart, dtend):
+ if not i: continue
+ dt = i.value
+ if isinstance(dt, datetime):
+ if dt.tzinfo is None: dt = dt.replace(tzinfo = default)
+ i.value = dt.astimezone(vobject.icalendar.utc)
+
+ return cal
+
+def unwantedParams(cal):
+ '''Removing unwanted parameters'''
+
+ blklist = [
+ "LANGUAGE",
+ "X-VOBJ-ORIGINAL-TZID",
+ "TZID"
+ ]
+
+ for event in cal.vevent_list:
+ for attr in event.contents:
+ attr = getattr(event, attr)
+ try:
+ for i in blklist:
+ while i in attr.params: del attr.params[i]
+ except AttributeError: continue