Update import of basic recurrence rules

Conversion of COUNT to UNTIL was a simple calculation which assumed one
repetiton per period (day, week, month or year); it does not take exception
days and invalid dates into account. Solved by a new function which returns the
n'th occurrence of a recurrence rule.

In calcurse UNTIL is interpreted as a day (DATE), in RFC 5545 as a time of day
(DATE-TIME). This has implications when a recurrence rule has an occurrence on
the UNTIL day, see comment in ical.c

An "Import:" note is added when a multi-day event is imported and turned into a
calcurse all-day event.

Icalendar quotes in comments have been updated to RFC 5545.

Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
This commit is contained in:
Lars Henriksen
2020-05-27 21:49:36 +02:00
committed by Lukas Fleischer
parent d8c1c48e78
commit d2791b046a
8 changed files with 336 additions and 135 deletions

View File

@@ -1106,6 +1106,7 @@ void recur_apoint_switch_notify(struct recur_apoint *);
void recur_event_paste_item(struct recur_event *, time_t);
void recur_apoint_paste_item(struct recur_apoint *, time_t);
int recur_next_occurrence(time_t, long, struct rpt *, llist_t *, time_t, time_t *);
int recur_nth_occurrence(time_t, long, struct rpt *, llist_t *, int, time_t *);
/* sigs.c */