CakePHP Calendar Plugin
Contains the basic logic of a calendar with recurring events. Any modifications made to this plugin should be based on the schema for iCal and the RFC:
REFERENCES
iCal Schema: http://developer.apple.com/library/mac/#documentation/AppleApplications/Reference/SyncServicesSchemaRef/Articles/Calendars.html
Calendar Store Overview: http://developer.apple.com/library/mac/#documentation/AppleApplications/Conceptual/CalendarStoreProgGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40004334
RFC 5545: http://datatracker.ietf.org/doc/rfc5545/
There is an old RFC 2445, as well.
RECURRENCE
Weekly recurrence on a particular day or a set of days is supported.
EVENTS
Repeating events and one time events are supported. You cannot have "detached" events at this time. A detached event is when one event in a series is altered and the rest of the events in that series are unaffected.
TO DO:
RECURRENCE
Include support for daily, monthly, and yearly recurrence.
EVENTS
Include support for detached events.
ATTENDEES
Include support for attendees.
ORGANIZER
Include support for organizers.