/**
* \brief Convert an asctime(3) string to \c time_t
*
* Convert the asctime(3) string \p str to its \c time_t representation \p tp.
*
* \param str the string to be converted
* \param tp the \c time_t conversion of \p str as a value-result
* argument
* \return
* - \c 0 successful
* - \c ~0 failure
*/
int u_asctime_to_tt(const char *str, time_t *tp)
{
enum { BUFSZ = 64 };
char wday[BUFSZ], mon[BUFSZ];
unsigned int day, year, hour, min, sec;
struct tm tm;
int i;
dbg_return_if (str == NULL, ~0);
dbg_return_if (tp == NULL, ~0);
dbg_return_if (strlen(str) >= BUFSZ, ~0);
dbg_err_if((i = sscanf(str, "%s %s %u %u:%u:%u %u", wday,
mon, &day, &hour, &min, &sec, &year)) != 7);
memset(&tm, 0, sizeof(struct tm));
/* time */
tm.tm_sec = sec;
tm.tm_min = min;
tm.tm_hour = hour;
/* date */
tm.tm_mday = day;
tm.tm_mon = month_idx(mon);
tm.tm_year = year - 1900;
dbg_err_if(tm.tm_mon < 0);
*tp = timegm(&tm);
return 0;
err:
return ~0;
}
/* day_of_year: set day of year from month & day */
int day_of_year(int year, char *month, int day)
{
int i, leap, idxmonth;
leap = year % 4 == 0 && year % 100 != 0 || year % 400 == 0;
if (year < 0 || !ismonth(month) || day <= 0 || day > daytab[leap][(idxmonth = month_idx(month))])
return -1;
for (i = 1; i < idxmonth; ++i) {
day += daytab[leap][i];
}
return day;
}
/**
* \brief Convert an rfc850 time string to \c time_t
*
* Convert the rfc850 string \p str to its \c time_t representation \p tp.
*
* \param str the string to be converted
* \param tp the \c time_t conversion of \p str as a value-result
* argument
* \return
* - \c 0 successful
* - \c ~0 failure
*/
int u_rfc850_to_tt(const char *str, time_t *tp)
{
enum { BUFSZ = 64 };
char wday[BUFSZ], mon[BUFSZ], tzone[BUFSZ];
unsigned int day, year, hour, min, sec;
struct tm tm;
int i;
char c;
dbg_return_if (str == NULL, ~0);
dbg_return_if (tp == NULL, ~0);
dbg_return_if (strlen(str) >= BUFSZ, ~0);
dbg_err_if((i = sscanf(str, "%[^,], %u%c%[^-]%c%u %u:%u:%u %s", wday,
&day, &c, mon, &c, &year, &hour, &min, &sec, tzone)) != 10);
memset(&tm, 0, sizeof(struct tm));
/* time */
tm.tm_sec = sec;
tm.tm_min = min;
tm.tm_hour = hour;
/* date */
tm.tm_mday = day;
tm.tm_mon = month_idx(mon);
tm.tm_year = year - 1900;
dbg_err_if(tm.tm_mon < 0);
#ifdef HAVE_TMZONE
/* time zone */
tm.tm_zone = tzone;
#endif
*tp = timegm(&tm);
return 0;
err:
return ~0;
}
