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/* ISC license. */
#include <errno.h>
#include <time.h>
#include <skalibs/types.h>
#include <skalibs/djbtime.h>
size_t localtm_scan (char const *s, struct tm *l)
{
struct tm ll = { .tm_isdst = -1 } ;
size_t n = 0 ;
unsigned int u ;
size_t i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (u < 1900) goto fail ;
u -= 1900 ; ll.tm_year = u ;
if (s[n++] != '-') goto fail ;
i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (!u || (u > 12)) goto fail ;
u-- ; ll.tm_mon = u ;
if (s[n++] != '-') goto fail ;
i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (!u || (u > 31)) goto fail ;
ll.tm_mday = u ;
if ((s[n] != ' ') && (s[n] != 'T')) goto fail ;
n++ ;
i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (u > 23) goto fail ;
ll.tm_hour = u ;
if (s[n++] != ':') goto fail ;
i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (u > 59) goto fail ;
ll.tm_min = u ;
if (s[n++] != ':') goto fail ;
i = uint_scan(s+n, &u) ;
if (!i) goto fail ;
n += i ;
if (u > 60) goto fail ;
ll.tm_sec = u ;
if (mktime(&ll) == (time_t)-1) goto fail ;
*l = ll ;
return n ;
fail:
return (errno = EINVAL, 0) ;
}
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