static int get_rise_set(date_t todayGreg, double *h_rise, double *h_set, double *gmt_offset)
{
double latitude, longitude;
timelib_sll rise, set, transit;
int rs;
timelib_time *t;
latitude = (double) latdeg + (latmin / 60.0);
longitude = (longdeg * -1.0) + ((longmin * -1.0) / 60.0);
t = timelib_time_ctor();
t->y = todayGreg.yy;
t->m = todayGreg.mm;
t->d = todayGreg.dd;
t->h = 17; /* assume 5pm */
timelib_set_timezone(t, TZ_INFO);
/* t->tz_info = TZ_INFO; */
/* t->zone_type = TIMELIB_ZONETYPE_ID; */
/* t->is_localtime = 1; */
/* t->have_zone = 1; */
timelib_update_ts(t, TZ_INFO);
*gmt_offset = timelib_get_current_offset(t) / 3600.0;
rs = timelib_astro_rise_set_altitude(t, longitude, latitude,
SUNRISE_SUNSET_ALTITUDE, 1,
h_rise, h_set, &rise, &set, &transit);
timelib_time_dtor(t);
return rs;
}
static timelib_sll do_adjust_timezone(timelib_time *tz, timelib_tzinfo *tzi)
{
switch (tz->zone_type) {
case TIMELIB_ZONETYPE_OFFSET:
tz->is_localtime = 1;
return tz->z * 60;
break;
case TIMELIB_ZONETYPE_ABBR: {
timelib_sll tmp;
tz->is_localtime = 1;
tmp = tz->z;
tmp -= tz->dst * 60;
tmp *= 60;
return tmp;
}
break;
case TIMELIB_ZONETYPE_ID:
tzi = tz->tz_info;
/* Break intentionally missing */
default:
/* No timezone in struct, fallback to reference if possible */
if (tzi) {
timelib_time_offset *before, *after;
timelib_sll tmp;
int in_transistion;
tz->is_localtime = 1;
before = timelib_get_time_zone_info(tz->sse, tzi);
after = timelib_get_time_zone_info(tz->sse - before->offset, tzi);
timelib_set_timezone(tz, tzi);
in_transistion = (
((tz->sse - after->offset) >= (after->transistion_time + (before->offset - after->offset))) &&
((tz->sse - after->offset) < after->transistion_time)
);
if ((before->offset != after->offset) && !in_transistion) {
tmp = -after->offset;
} else {
tmp = -tz->z;
}
timelib_time_offset_dtor(before);
timelib_time_offset_dtor(after);
return tmp;
}
}
return 0;
}