Tabs vs Spaces

[frenchie/icalparse.git] / parserrules.py

diff --git a/parserrules.py b/parserrules.py
index 424de51..7db0413 100644 (file)
--- a/parserrules.py
+++ b/parserrules.py
@@ -28,14 +28,20 @@
 
 import vobject
 
+ruleConfig = {}
+ruleConfig["defaultTZ"] = "UTC"
+
 def facebookOrganiser(cal):
        '''Adds organiser details to the body of facebook calendars.'''
 
-       if cal.contents.has_key(u'prodid'):
+       if 'prodid' in cal.contents:
                if not "Facebook" in cal.prodid.value: return cal
 
+       if 'vevent_list' not in dir(cal):
+               return cal
+
        for event in cal.vevent_list:
-               if not event.contents.has_key(u'organizer'): continue
+               if 'organizer' not in event.contents: continue
                try:
                        a = event.organizer.cn_paramlist
                        organizer = "Organised by: " + event.organizer.cn_param + " ("
@@ -49,16 +55,24 @@ def facebookOrganiser(cal):
 def whatPrivacy(cal):
        '''Marks events public so google calendar doesn't have a sad about them.'''
 
+       if 'vevent_list' not in dir(cal):
+               return cal
+
        for event in cal.vevent_list:
-               if event.contents.has_key(u'class'):
-                       del event.contents[u'class']
+               if 'class' in event.contents:
                        # Bit of a hack as class is a reserved word in python
+                       del event.contents['class']
                        event.add('class').value = "PUBLIC"
 
        return cal
 
-def dropMSKeys(cal):
-       '''Drops microsoft keys, good for outlook, just bandwidth when not.'''
+def dropAttributes(cal):
+       '''Removing unwanted metadata'''
+       if "facebook" in ruleConfig:
+               if ruleConfig["facebook"] == True: return cal
+
+       if 'vevent_list' not in dir(cal):
+               return cal
 
        eventBlacklist = [x.lower() for x in [
                "X-ALT-DESC",
@@ -68,29 +82,107 @@ def dropMSKeys(cal):
                "X-MS-OLK-ALLOWEXTERNCHECK",
                "X-MS-OLK-AUTOSTARTCHECK",
                "X-MS-OLK-CONFTYPE",
-               "X-MS-OLK-AUTOFILLLOCATION"
+               "X-MS-OLK-AUTOFILLLOCATION",
+               "TRANSP",
+               "SEQUENCE",
+               "PRIORITY"
+       ]]
+
+       mainBlacklist = [x.lower() for x in [
+               "X-CLIPSTART",
+               "X-CALSTART",
+               "X-OWNER",
+               "X-MS-OLK-WKHRSTART",
+               "X-MS-OLK-WKHREND",
+               "X-WR-RELCALID",
+               "X-MS-OLK-WKHRDAYS",
+               "X-MS-OLK-APPTSEQTIME",
+               "X-CLIPEND",
+               "X-CALEND",
+               "VTIMEZONE",
+               "X-PRIMARY-CALENDAR"
        ]]
 
        for event in cal.vevent_list:
                for blacklist in eventBlacklist:
-                       if event.contents.has_key(blacklist): del event.contents[blacklist]
+                       if blacklist in event.contents: del event.contents[blacklist]
+
+       for blkl in mainBlacklist:
+               while blkl in cal.contents: del cal.contents[blkl]
 
        return cal
 
 def exDate(cal):
-       '''Changes multi-EXDATE into singles (apple can't obey even simple specs)'''
+       '''Replacing multi-value EXDATES with multiple single-value EXDATES'''
+       if "facebook" in ruleConfig:
+               if ruleConfig["facebook"] == True: return cal
+
+       if 'vevent_list' not in dir(cal):
+               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
+               if 'exdate' not in event.contents: continue
                dates = event.exdate.value
-               try: tzid = event.exdate.tzid_param
-               except AttributeError: tzid = ''
 
-               del event.contents[u'exdate']
+               del event.contents['exdate']
 
                for date in dates:
-                       entry = event.add(u'exdate')
+                       if isinstance(date, datetime):
+                               if date.tzinfo is None: date = date.replace(tzinfo = default)
+                               date = date.astimezone(vobject.icalendar.utc)
+                       entry = event.add('exdate')
                        entry.value = [date]
-                       if tzid: entry.tzid_param = tzid
+
+       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'''
+
+       if 'vevent_list' not in dir(cal):
+               return cal
+
+       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"
+       ]
+
+       if 'vevent_list' not in dir(cal):
+               return cal
+
+       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
 
        return cal