[kronolith] Kronolith iCal export generates output violating RFC5545

[Carsten Schumann]

Am 05.03.2012 09:37, schrieb Jan Schneider:
> Zitat von Carsten Schumann <grypho at tempus-vivit.net>:
>
>> Hi everyone,
>>
>> while playing with iCal4j under Android I discovered that kronolith  
>> generates output which is violating RFC5545.
>>
>> In the .ics file one of my appointments reads:
>>
>> BEGIN:VEVENT
>> DTSTART:20111024T151500Z
>> DTEND:20111024T163000Z
>> DTSTAMP:20120304T202030Z
>> 
>> UID:20CD3890-7228-4D06-A305-3BF4A9B8EB69:E306E14E-FBB6-49FE-B37F-8CB3035CCB
>>  18
>> CREATED:20111010T180609Z
>> LAST-MODIFIED:20111010T180609Z
>> SUMMARY:Test
>> CATEGORIES:Kalender
>> CLASS:PUBLIC
>> STATUS:CONFIRMED
>> TRANSP:OPAQUE
>> RRULE:FREQ=WEEKLY;INTERVAL=2;BYDAY=;UNTIL=20111219T225959Z
>> END:VEVENT
>>
>>
>> According to RFC5545 (http://tools.ietf.org/html/rfc5545#page-38),  
>> the RULE line reads
>>
>> recur           = recur-rule-part *( ";" recur-rule-part )
>>
>> with
>>
>> recur-rule-part = ( "FREQ" "=" freq )
>>                        / ( "UNTIL" "=" enddate )
>>                        / ( "COUNT" "=" 1*DIGIT )
>>                        / ( "INTERVAL" "=" 1*DIGIT )
>>                        / ( "BYSECOND" "=" byseclist )
>>                        / ( "BYMINUTE" "=" byminlist )
>>                        / ( "BYHOUR" "=" byhrlist )
>>                        / ( "BYDAY" "=" bywdaylist )
>>                        / ( "BYMONTHDAY" "=" bymodaylist )
>>                        / ( "BYYEARDAY" "=" byyrdaylist )
>>                        / ( "BYWEEKNO" "=" bywknolist )
>>                        / ( "BYMONTH" "=" bymolist )
>>                        / ( "BYSETPOS" "=" bysplist )
>>                        / ( "WKST" "=" weekday )
>>
>>
>> and
>>
>> bywdaylist  = ( weekdaynum *("," weekdaynum) )
>>
>> which means "BYDAY=" is invalid as the list requires at least one 
>> element.
>>
>> I'm using the most recent kronolith(3.0.15) and horde(4.0.14) 
>> versions.
>
> And which recurrence rule *is* this event actually using?
>
> Jan.

Hi Jan,

see my attached screenshot.

I know, that rule does not make sense since there will be no 
repetitions when no weekday is selected BUT nevertheless this should not 
result in an unparsable ical file.

Either this issue should be catched when the event is being entered or 
the ical exporter should omit this empty list.

Carsten


>
> --
> The Horde Project
> http://www.horde.org/
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