minix/lib/ansi/asctime.c
2005-04-21 14:53:53 +00:00

60 lines
1.1 KiB
C
Executable file

/*
* asctime - print a date
*/
/* $Header$ */
#include <string.h>
#include <time.h>
#include "loc_time.h"
#define DATE_STR "??? ??? ?? ??:??:?? ????\n"
static char *
two_digits(register char *pb, int i, int nospace)
{
*pb = (i / 10) % 10 + '0';
if (!nospace && *pb == '0') *pb = ' ';
pb++;
*pb++ = (i % 10) + '0';
return ++pb;
}
static char *
four_digits(register char *pb, int i)
{
i %= 10000;
*pb++ = (i / 1000) + '0';
i %= 1000;
*pb++ = (i / 100) + '0';
i %= 100;
*pb++ = (i / 10) + '0';
*pb++ = (i % 10) + '0';
return ++pb;
}
char *asctime(const struct tm *timeptr)
{
static char buf[26];
register char *pb = buf;
register const char *ps;
register int n;
strcpy(pb, DATE_STR);
ps = _days[timeptr->tm_wday];
n = ABB_LEN;
while(--n >= 0) *pb++ = *ps++;
pb++;
ps = _months[timeptr->tm_mon];
n = ABB_LEN;
while(--n >= 0) *pb++ = *ps++;
pb++;
pb = two_digits(
two_digits(
two_digits(two_digits(pb, timeptr->tm_mday, 0)
, timeptr->tm_hour, 1)
, timeptr->tm_min, 1)
, timeptr->tm_sec, 1);
four_digits(pb, timeptr->tm_year + 1900);
return buf;
}