int
days_btwn(int m1, int d1, int y1, int m2, int d2, int y2)
{
/*
* calculate the number of "full" days in between
* m1/d1/y1 and m2/d2/y2.
* NOTE: there should not be more than a year separation in the
* dates. also, m should be in 0 to 11, and d should be in 1 to 31.
*/
int days;
int m;
if ((m1 == m2) && (d1 == d2) && (y1 == y2))
return (0);
if ((m1 == m2) && (d1 < d2)) {
/*
* In case of d2==29 ,d1==28 and m1==m2==Feb and year is not
* a leap year, this function should return the days till the
* the next Feb 29.See Bug 4257355.
*/
if (d2 > days_in_mon(m2, y2)) {
int p;
for (p = 1; ! isleap(y2+YEAR+p); p++)
;
return (p*365 + d2-d1-1);
}
return (d2-d1-1);
}
/* the remaining dates are on different months */
days = (days_in_mon(m1, y1)-d1) + (d2-1);
m = (m1 + 1) % 12;
while (m != m2) {
if (m == 0)
y1++;
days += days_in_mon(m, y1);
m = (m + 1) % 12;
}
return (days);
}
status time_parse(a_time *out, const char *s, size_t len)
{
memset(out, 0, sizeof(a_time));
if (len < time_string_length()) {
return NO;
}
int year = s_to_d(s, 4, 0); s += 4;
int mon = s_to_d(s, 2, 0); s += 2;
if (mon <= 0 || 13 <= mon) return NO;
int day = s_to_d(s, 2, 0); s += 2;
if (day < 0 || days_in_mon(mon, year) < day) return NO;
int hour = s_to_d(s, 2, 0); s += 2;
if (hour < 0 || 24 <= hour) return NO;
int minute = s_to_d(s, 2, 0); s += 2;
if (minute < 0 || 60 <= minute) return NO;
int second = s_to_d(s, 2, 0); /* s += 2; scan-build: dead increment */
time_copy(out, time_now());
if (!time_ymdhms(out, year, mon, day, hour, minute, second))
return NO;
return OK;
}