-/* TODO: temporary copy from libical, apply this patch to libical... */
-int webcit_icaltime_compare(const struct icaltimetype a_in, const struct icaltimetype b_in)
-{
- struct icaltimetype a, b;
-
- a = icaltime_convert_to_zone(a_in, icaltimezone_get_utc_timezone());
- b = icaltime_convert_to_zone(b_in, icaltimezone_get_utc_timezone());
-
- if (a.year > b.year)
- return 1;
- else if (a.year < b.year)
- return -1;
-
- else if (a.month > b.month)
- return 1;
- else if (a.month < b.month)
- return -1;
-
- else if (a.day > b.day)
- return 1;
- else if (a.day < b.day)
- return -1;
-
- /* if both are dates, we are done */
- if (a.is_date && b.is_date)
- return 0;
-
- /* else, if only one is a date (and we already know the date part is equal),
- then the other is greater */
- else if (b.is_date)
- return 1;
- else if (a.is_date)
- return -1;
-
- else if (a.hour > b.hour)
- return 1;
- else if (a.hour < b.hour)
- return -1;
-
- else if (a.minute > b.minute)
- return 1;
- else if (a.minute < b.minute)
- return -1;
-
- else if (a.second > b.second)
- return 1;
- else if (a.second < b.second)
- return -1;
-
- return 0;
-}
-
-
-/**
- * \brief Check if dates are overlapping
- * Check to see if two events overlap.
- * (This function is used in both Citadel and WebCit. If you change it in
- * one place, change it in the other. Better yet, put it in a library.)
- * \param t1start date one start
- * \param t1end date one end
- * \param t2start date one start
- * \param t2end date two end
- * \returns nonzero if they do.
- */
-int ical_ctdl_is_overlap(
- struct icaltimetype t1start,
- struct icaltimetype t1end,
- struct icaltimetype t2start,
- struct icaltimetype t2end
-) {
-
- if (icaltime_is_null_time(t1start)) return(0);
- if (icaltime_is_null_time(t2start)) return(0);
-
- /** First, check for all-day events */
- if (t1start.is_date) {
- if (!icaltime_compare_date_only(t1start, t2start)) {
- return(1);
- }
- if (!icaltime_is_null_time(t2end)) {
- if (!icaltime_compare_date_only(t1start, t2end)) {
- return(1);
- }
- }
- }
-
- if (t2start.is_date) {
- if (!icaltime_compare_date_only(t2start, t1start)) {
- return(1);
- }
- if (!icaltime_is_null_time(t1end)) {
- if (!icaltime_compare_date_only(t2start, t1end)) {
- return(1);
- }
- }
- }
-
- lprintf (2,"Comparing t1start %d:%d t1end %d:%d t2start %d:%d t2end %d:%d \n", t1start.hour, t1start.minute, t1end.hour, t1end.minute, t2start.hour, t2start.minute, t2end.hour, t2end.minute);// TODO: remove me.
-
- /** Now check for overlaps using date *and* time. */
-
- /** First, bail out if either event 1 or event 2 is missing end time. */
- if (icaltime_is_null_time(t1end)) return(0);
- if (icaltime_is_null_time(t2end)) return(0);
-
- /** If event 1 ends before event 2 starts, we're in the clear. */
- if (webcit_icaltime_compare(t1end, t2start) <= 0) return(0);
- lprintf(2,"first pased \n");
- /** If event 2 ends before event 1 starts, we're also ok. */
- if (webcit_icaltime_compare(t2end, t1start) <= 0) return(0);
- lprintf(2,"second pased \n");
-
- /** Otherwise, they overlap. */
- return(1);
-}
-
-
-