59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* $NetBSD: asctime.c,v 1.2 1995/03/09 23:41:11 jtc Exp $ */
|
|
|
|
#ifndef lint
|
|
#ifndef NOID
|
|
static char elsieid[] = "@(#)asctime.c 7.6";
|
|
#endif /* !defined NOID */
|
|
#endif /* !defined lint */
|
|
|
|
/*LINTLIBRARY*/
|
|
|
|
#include "private.h"
|
|
#include "tzfile.h"
|
|
|
|
/*
|
|
** A la X3J11, with core dump avoidance.
|
|
*/
|
|
|
|
char *
|
|
asctime(timeptr)
|
|
register const struct tm * timeptr;
|
|
{
|
|
static const char wday_name[][3] = {
|
|
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
|
|
};
|
|
static const char mon_name[][3] = {
|
|
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
|
|
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
|
|
};
|
|
/*
|
|
** Big enough for something such as
|
|
** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
|
|
** (two three-character abbreviations, five strings denoting integers,
|
|
** three explicit spaces, two explicit colons, a newline,
|
|
** and a trailing ASCII nul).
|
|
*/
|
|
static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
|
|
3 + 2 + 1 + 1];
|
|
register const char * wn;
|
|
register const char * mn;
|
|
|
|
if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
|
|
wn = "???";
|
|
else wn = wday_name[timeptr->tm_wday];
|
|
if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
|
|
mn = "???";
|
|
else mn = mon_name[timeptr->tm_mon];
|
|
/*
|
|
** The X3J11-suggested format is
|
|
** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
|
|
** Since the .2 in 02.2d is ignored, we drop it.
|
|
*/
|
|
(void) sprintf(result, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
|
|
wn, mn,
|
|
timeptr->tm_mday, timeptr->tm_hour,
|
|
timeptr->tm_min, timeptr->tm_sec,
|
|
TM_YEAR_BASE + timeptr->tm_year);
|
|
return result;
|
|
}
|