0 /* CAL_UNKNOWN */
};
+typedef long int (*cal_func_type) (int, int, int);
+
+cal_func_type cal_func[] = { &GregorianToSdn, /* CAL_GREGORIAN */
+ &JulianToSdn, /* CAL_JULIAN */
+ &JewishToSdn, /* CAL_JEWISH */
+ &FrenchToSdn /* CAL_FRENCH_REV */
+ };
+
void copy_date(struct date *to, struct date from)
{
memcpy(to, &from, sizeof(struct date));
d->type = DATE_UNRECOGNIZED;
else {
struct date end_date;
+ cal_func_type to_sdn;
if (d->day == -1 || d->month == -1 || d->year == -1) {
d->type = DATE_BOUNDED;
copy_date(&end_date, *d);
else {
d->type = DATE_EXACT;
}
-
- if (d->cal == CAL_GREGORIAN) {
- d->sdn1 = GregorianToSdn(d->year, d->month, d->day);
- if (d->type == DATE_BOUNDED) {
- d->sdn2 = GregorianToSdn(end_date.year, end_date.month, end_date.day);
- d->sdn2 -= 1;
- }
- }
- else if (d->cal == CAL_JULIAN) {
- d->sdn1 = JulianToSdn(d->year, d->month, d->day);
- if (d->type == DATE_BOUNDED) {
- d->sdn2 = JulianToSdn(end_date.year, end_date.month, end_date.day);
- d->sdn2 -= 1;
- }
- }
- else if (d->cal == CAL_HEBREW) {
- d->sdn1 = JewishToSdn(d->year, d->month, d->day);
- if (d->type == DATE_BOUNDED) {
- d->sdn2 = JewishToSdn(end_date.year, end_date.month, end_date.day);
- d->sdn2 -= 1;
- }
- }
- else if (d->cal == CAL_FRENCH_REV) {
- d->sdn1 = FrenchToSdn(d->year, d->month, d->day);
- if (d->type == DATE_BOUNDED) {
- d->sdn2 = FrenchToSdn(end_date.year, end_date.month, end_date.day);
- d->sdn2 -= 1;
- }
+
+ to_sdn = cal_func[d->cal];
+ d->sdn1 = (*to_sdn)(d->year, d->month, d->day);
+ if (d->type == DATE_BOUNDED) {
+ d->sdn2 = (*to_sdn)(end_date.year, end_date.month, end_date.day);
+ d->sdn2 -= 1;
}
}
}