bin/unzip/timezone.c

526 static struct tm _tmbuf;
528 struct tm *gmtime(when)
556 struct tm *localtime(when)
561     struct tm *ret;
581     struct tm *tb;
583     time_t     localt;          /* time_t equivalent of given tm struct */
624    of the local time and date in the exploded time structure `tm',
625    adjust out of range fields in `tm' and set `tm->tm_yday', `tm->tm_wday'.
626    If `tm->tm_isdst < 0' was passed to mktime(), the correct setting of
630    Return -1 if time in `tm' cannot be represented as time_t value. */
632 time_t mktime(tm)
633      struct tm *tm;
635   struct tm *ltm;               /* Local time. */
640   int save_isdst;               /* Copy of the tm->isdst input value */
642   save_isdst = tm->tm_isdst;
643   loctime = mkgmtime(tm);
645     tm->tm_isdst = save_isdst;
652      savings time occurs between when it is the time in `tm' locally
660     if (ltm == (struct tm *)NULL ||
666   if (ltm == (struct tm *)NULL || tzoffset_adj != 0L) {
668     tm->tm_isdst = save_isdst;
690   if (tm != ltm)  /* `tm' may already point to localtime's internal storage */
691     *tm = *ltm;
699       These are the result of the decomposition into a `struct tm' for
722 /* Adjusts out-of-range values for `tm' field `tm_member'. */
733    of the Greenwich Mean time and date in the exploded time structure `tm'.
734    This function does always put back normalized values into the `tm' struct,
735    parameter, including the calculated numbers for `tm->tm_yday',
736    `tm->tm_wday', and `tm->tm_isdst'.
737    Returns -1 if the time in the `tm' parameter cannot be represented
740 time_t mkgmtime(tm)
741      struct tm *tm;
745   years = tm->tm_year + TM_YEAR_BASE;   /* year - 1900 -> year */
746   months = tm->tm_mon;                  /* 0..11 */
747   days = tm->tm_mday - 1;               /* 1..31 -> 0..30 */
748   hours = tm->tm_hour;                  /* 0..23 */
749   minutes = tm->tm_min;                 /* 0..59 */
750   seconds = tm->tm_sec;                 /* 0..61 in ANSI C. */
773   /* Restore adjusted values in tm structure */
774   tm->tm_year = years - TM_YEAR_BASE;
775   tm->tm_mon = months;
776   tm->tm_mday = days + 1;
777   tm->tm_hour = hours;
778   tm->tm_min = minutes;
779   tm->tm_sec = seconds;
783   tm->tm_yday = days;
788   tm->tm_wday = ((unsigned)days + EPOCH_WDAY) % 7;
789   tm->tm_isdst = 0;
798        (tm->tm_yday > (YDAYS(TM_MON_MAX, TM_YEAR_MAX) + (TM_MDAY_MAX - 1)) ||
799         (tm->tm_yday == (YDAYS(TM_MON_MAX, TM_YEAR_MAX) + (TM_MDAY_MAX - 1)) &&