icalender export: limited number of repeated events

icalender export: limited number of repeated events

[knubee]

I need to share some of my calendar data with co-workers. One of
the biggest limitations I encounter with emacs/icalender is that
it does not seem to support a limited number of repeated events.

As far as I can tell, the way to specify this is with regular
expressions. Example:

* TODO Something every Sunday, 10:00-12:00, for 2 months
  SCHEDULED: <%%(and (= (calendar-day-of-week date) 7) 
                        (diary-block 1 6 200 31 7 2008)) 10:00-12:00>

I have not been able to figure out how to export these to an .ics
file.

Google calendar, on the other hand, will export something like
the following:

BEGIN:VEVENT
DTSTART:20080601T100000
DTEND:20080601T120000
RRULE:FREQ=DAILY;UNTIL=20080731

Has anyone else managed to get a limited number of repeating
tasks/events to export correctly to .ics format?

thanks.

Re: icalender export: limited number of repeated events

[Carsten Dominik]

Hi,

On Jun 16, 2008, at 11:07 AM, knubee wrote:

> I need to share some of my calendar data with co-workers. One of
> the biggest limitations I encounter with emacs/icalender is that
> it does not seem to support a limited number of repeated events.
>
> As far as I can tell, the way to specify this is with regular
> expressions. Example:
>
> * TODO Something every Sunday, 10:00-12:00, for 2 months
> SCHEDULED: <%%(and (= (calendar-day-of-week date) 7)
>                       (diary-block 1 6 200 31 7 2008)) 10:00-12:00>
>
> I have not been able to figure out how to export these to an .ics
> file.

Since iCal interpreters usually do not have access to Emacs lisp, it is
obviously impossible that the Emacs icalendar exporter could tranlate
sexp diary entries of arbitrary complexity.  We can be happy that it
does handle the most common ones.

However, I did not know that the icalendar format actually supported
something like UNTIL in the RRULE line.  So maybe we could teach the Org
exporter a syntax for this and export it properly.  However, I don't
have a good idea for a syntax, and not much time to implement it now.

One way to hack this yourself would be the following:

- Add some UNTIL:20080610 or smilar cookie to the entry, either
   to the headline or early in the body, so that it will end up
   in the summary field.  Make sure it does end up there, check the raw
   .ics file that Org is producing.

- Use the new org-before-save-iCalendar-file-hook to find these
   in the iCalendar file and turn them into an UNTIL field in
   the RRULE line of the entry.

- When you are done, share this with us!

HTH

- Carsten

>
>
> Google calendar, on the other hand, will export something like
> the following:
>
> BEGIN:VEVENT
> DTSTART:20080601T100000
> DTEND:20080601T120000
> RRULE:FREQ=DAILY;UNTIL=20080731
>
> Has anyone else managed to get a limited number of repeating
> tasks/events to export correctly to .ics format?
>
> thanks.
>
>
>
>
>
>
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> Emacs-orgmode mailing list
> Remember: use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

Re: icalender export: limited number of repeated events

[knubee]

> However, I did not know that the icalendar format actually supported
> something like UNTIL in the RRULE line.  So maybe we could teach the Org
> exporter a syntax for this and export it properly.  However, I don't
> have a good idea for a syntax, and not much time to implement it now.

ok. it does seem like a fairly standard thing to do with calendars (ie, to have
repeating events that end after a certain number -- or after a certain date).
perhaps, in the future, it is worth implementing something that allows org-mode
user to specify something lik:

SCHEDULED: <2008-06-01 Sun +1w~10> ;repeats until 10 weeks after starting date

or

SCHEDULED: <2008-06-01 Sun +1w~2008-08-03> ;repeats until august 3

the actual symbols ("~") and syntax used above are probably bad, but hopefully
it captures the idea.

> - When you are done, share this with us!

it may be a bit beyond my abilities, but if i get something to work, i will
share it ;-)

Re: Re: icalender export: limited number of repeated events

[Richard G Riley]

knubee <knubee@gmail.com> writes:

>> However, I did not know that the icalendar format actually supported
>> something like UNTIL in the RRULE line.  So maybe we could teach the Org
>> exporter a syntax for this and export it properly.  However, I don't
>> have a good idea for a syntax, and not much time to implement it now.
>
> ok. it does seem like a fairly standard thing to do with calendars (ie, to have
> repeating events that end after a certain number -- or after a certain date).
> perhaps, in the future, it is worth implementing something that allows org-mode
> user to specify something lik:
>
> SCHEDULED: <2008-06-01 Sun +1w~10> ;repeats until 10 weeks after starting date
>

Possibly easier to bracket the extensions to the commonly understood
date syntax.


SCHEDULED: <2008-06-01 Sun +1w [*10]>  ; 10 times at weekly intervals

> or
>
> SCHEDULED: <2008-06-01 Sun +1w~2008-08-03> ;repeats until august 3

SCHEDULED: <2008-06-01 Sun +1w [->2008-08-03] > ;repeats upto and
including until august 3

>
> the actual symbols ("~") and syntax used above are probably bad, but hopefully
> it captures the idea.
>
>> - When you are done, share this with us!
>
> it may be a bit beyond my abilities, but if i get something to work, i will
> share it ;-)
>
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Remember: use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode