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/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#if defined(LIBC_SCCS) && !defined(lint) && !defined(NOID)
static char elsieid[] = "@(#)asctime.c 7.9";
static char rcsid[] = "$OpenBSD: asctime.c,v 1.7 2000/01/06 08:24:17 d Exp $";
#endif /* LIBC_SCCS and not lint */
/*LINTLIBRARY*/
#include "private.h"
#include "tzfile.h"
#include "thread_private.h"
/*
** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
*/
char *
asctime_r(timeptr, buf)
register const struct tm * timeptr;
char * buf;
{
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"
};
register const char * wn;
register const char * mn;
int size;
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.
*/
/*
* P1003 8.3.5.2 says that asctime_r() can only assume at most
* a 26 byte buffer. *XXX*
*/
size = snprintf(buf, 26, "%.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);
if (size >= 26)
return NULL;
return buf;
}
/*
** A la X3J11, with core dump avoidance.
*/
char *
asctime(timeptr)
const struct tm * timeptr;
{
/* asctime_r won't exceed this buffer: */
static char result[26];
_THREAD_PRIVATE_KEY(asctime);
char *resultp = (char*) _THREAD_PRIVATE(asctime, result, NULL);
if (resultp == NULL)
return NULL;
else
return asctime_r(timeptr, resultp);
}
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