[CalendarServer-changes] [2833] CalendarServer/branches/users/cdaboo/implicit-2805/twistedcaldav/ ical.py

[source_changes at macosforge.org]

Revision: 2833
          http://trac.macosforge.org/projects/calendarserver/changeset/2833
Author:   cdaboo at apple.com
Date:     2008-08-19 12:07:56 -0700 (Tue, 19 Aug 2008)
Log Message:
-----------
Method to list all VTIMEZONE TZIDs present in a calendar.

Modified Paths:
--------------
    CalendarServer/branches/users/cdaboo/implicit-2805/twistedcaldav/ical.py

Modified: CalendarServer/branches/users/cdaboo/implicit-2805/twistedcaldav/ical.py
===================================================================
--- CalendarServer/branches/users/cdaboo/implicit-2805/twistedcaldav/ical.py	2008-08-18 21:29:54 UTC (rev 2832)
+++ CalendarServer/branches/users/cdaboo/implicit-2805/twistedcaldav/ical.py	2008-08-19 19:07:56 UTC (rev 2833)
@@ -672,6 +672,22 @@
         
         return result
     
+    def timezones(self):
+        """
+        Returns the set of TZID's for each VTIMEZONE component.
+
+        @return: a set of strings, one for each unique TZID value.
+        """
+        
+        assert self.name() == "VCALENDAR", "Not a calendar: %r" % (self,)
+
+        results = set()
+        for component in self.subcomponents():
+            if component.name() == "VTIMEZONE":
+                results.add(component.propertyValue("TZID"))
+        
+        return results
+    
     def expand(self, start, end):
         """
         Expand the components into a set of new components, one for each
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