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#include "entry.h"
#include <assert.h>
static time_t rt;
/* super inefficient, but should best-possible avoid any weird leap
* years/seconds/dst-problems/other future changes */
time_t* entry_is_active(struct entry_s *e, time_t now)
{
struct tm t, ttmp, *tmp;
time_t rttmp, now_plus_warn, now_minus_stay;
assert(e != NULL);
tmp = localtime(&now);
if (tmp == NULL)
return NULL;
t = *tmp;
ttmp = t;
t.tm_year += e->warn.year;
t.tm_mon += e->warn.month;
t.tm_mday += e->warn.day;
t.tm_hour += e->warn.hour;
t.tm_min += e->warn.minute;
t.tm_sec += e->warn.second;
now_plus_warn = mktime(&t);
ttmp.tm_year -= e->stay.year;
ttmp.tm_mon -= e->stay.month;
ttmp.tm_mday -= e->stay.day;
ttmp.tm_hour -= e->stay.hour;
ttmp.tm_min -= e->stay.minute;
ttmp.tm_sec -= e->stay.second;
now_minus_stay = mktime(&ttmp);
if (now_plus_warn == -1 || now_minus_stay == -1)
return NULL;
if (e->type == ENTRY_TYPE_ON) {
if (e->start >= now_minus_stay && e->start <= now_plus_warn) {
rt = e->start;
return &rt;
}
return NULL;
}
if (e->has_end && now_minus_stay > e->end)
return NULL;
tmp = localtime( &(e->start) );
if (tmp == NULL)
return NULL;
t = *tmp;
for (rt = e->start;;) {
if (rt > now_plus_warn)
return NULL;
if (rt >= now_minus_stay)
return &rt;
ttmp = t;
t.tm_year += e->every.year;
t.tm_mon += e->every.month;
t.tm_mday += e->every.day;
t.tm_hour += e->every.hour;
t.tm_min += e->every.minute;
t.tm_sec += e->every.second;
rt = mktime(&t);
if (rt == -1) {
rttmp = mktime(&ttmp);
if (rttmp == -1)
return NULL;
tmp = localtime(&rttmp);
if (tmp == NULL)
return NULL;
t = *tmp;
t.tm_year += e->every.year;
t.tm_mon += e->every.month;
t.tm_mday += e->every.day;
t.tm_hour += e->every.hour;
t.tm_min += e->every.minute;
t.tm_sec += e->every.second;
rt = mktime(&t);
if (rt == -1)
return NULL;
}
}
}
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