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recur_item_inday() improved, thanks to Tony's patch

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This commit is contained in:
Frederic Culot 2007-03-10 16:48:19 +00:00
parent ba7189e688
commit a4715303f1
1 changed files with 70 additions and 27 deletions
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89
src/recur.c
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@ -1,4 +1,4 @@
/* $calcurse: recur.c,v 1.22 2007/03/10 15:55:25 culot Exp $ */
/* $calcurse: recur.c,v 1.23 2007/03/10 16:48:19 culot Exp $ */
/*
* Calcurse - text-based organizer
@ -362,47 +362,90 @@ void recur_save_data(FILE *f)
pthread_mutex_unlock(&(recur_alist_p->mutex));
}
/* Check if the recurrent item belongs to the selected day. */
unsigned recur_item_inday(long item_start, struct days_s *item_exc,
int rpt_type, int rpt_freq,
long rpt_until, long day_start)
/*
* Check if the recurrent item belongs to the selected day,
* and if yes, return the real start time.
* This function was improved thanks to Tony's patch.
*/
unsigned
recur_item_inday(long item_start, struct days_s *item_exc,
int rpt_type, int rpt_freq, long rpt_until, long day_start)
{
long day_end = day_start + DAYINSEC;
unsigned inday = 0;
#define YEARSTODAYS(x) ((x) * 365L + (x) / 4 - (x) / 100 + (x) / 400)
long day_end;
struct tm *lt;
int day_month, day_year, day_yday, day_mday, diff;
struct days_s *exc;
time_t t;
char *error =
_("FATAL ERROR in recur_item_inday: unknown item type\n");
day_end = day_start + DAYINSEC;
t = day_start;
lt = localtime(&t);
day_month = lt->tm_mon;
day_year = lt->tm_year;
day_yday = lt->tm_yday;
day_mday = lt->tm_mday;
for (exc = item_exc; exc != 0; exc = exc->next)
if (exc->st < day_end && exc->st >= day_start)
return 0;
if (rpt_until == 0) /* we have an endless recurrent item */
rpt_until = day_end;
while (item_start <= day_end && item_start <= rpt_until) {
if (item_start < day_end && item_start >= day_start) {
inday = item_start;
break;
}
if (item_start > day_end || rpt_until < day_start)
return 0;
t = item_start;
lt = localtime(&t);
if (rpt_type == RECUR_DAILY) {
lt->tm_mday += rpt_freq;
} else if (rpt_type == RECUR_WEEKLY) {
lt->tm_mday += rpt_freq * 7;
} else if (rpt_type == RECUR_MONTHLY) {
lt->tm_mon += rpt_freq;
} else if (rpt_type == RECUR_YEARLY) {
lt->tm_year += rpt_freq;
} else { /* NOT REACHED */
switch (rpt_type) {
case RECUR_DAILY:
diff = (YEARSTODAYS(lt->tm_year) + lt->tm_yday) -
(YEARSTODAYS(day_year) + day_yday);
if (diff % rpt_freq != 0)
return 0;
lt->tm_mday = day_mday;
lt->tm_mon = day_month;
lt->tm_year = day_year;
break;
case RECUR_WEEKLY:
diff = (YEARSTODAYS(lt->tm_year) + lt->tm_yday) -
(YEARSTODAYS(day_year) + day_yday);
if (diff % (rpt_freq*7) != 0)
return 0;
lt->tm_mday = day_mday;
lt->tm_mon = day_month;
lt->tm_year = day_year;
break;
case RECUR_MONTHLY:
diff = ((day_year - lt->tm_year) * 12) +
(day_month - lt->tm_mon);
if (diff % rpt_freq != 0)
return 0;
lt->tm_mon = day_month;
lt->tm_year = day_year;
break;
case RECUR_YEARLY:
diff = day_year - lt->tm_year;
if (diff % rpt_freq != 0)
return 0;
lt->tm_year = day_year;
break;
default:
fputs(error, stderr);
exit(EXIT_FAILURE);
}
item_start = date2sec(lt->tm_year + 1900, lt->tm_mon + 1,
lt->tm_mday, lt->tm_hour, lt->tm_min);
}
return inday;
if (item_start < day_end && item_start >= day_start)
return item_start;
else
return 0;
}
/*