[apple/libc.git] / stdtime / FreeBSD / asctime.c

/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/

#include <sys/cdefs.h>
#ifndef lint
#ifndef NOID
static char	elsieid[] __unused = "@(#)asctime.c	7.9";
#endif /* !defined NOID */
#endif /* !defined lint */
__FBSDID("$FreeBSD: src/lib/libc/stdtime/asctime.c,v 1.12 2004/06/14 10:31:52 stefanf Exp $");

/*LINTLIBRARY*/

#include "namespace.h"
#include "private.h"
#include "un-namespace.h"
#include "tzfile.h"

/*
** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
*/

char *
asctime_r(timeptr, buf)
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"
	};
	const char *	wn;
	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(buf, "%.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 buf;
}

/*
** A la X3J11, with core dump avoidance.
*/

char *
asctime(timeptr)
const struct tm *	timeptr;
{
	/*
	** 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];

	return asctime_r(timeptr, result);
}
Commit	Line	Data
5b2abdfb A	1	/*
5b2abdfb A	2	** This file is in the public domain, so clarified as of
3d9156a7	3	** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
5b2abdfb A	4	*/
5b2abdfb A	5
9385eb3d	6	#include <sys/cdefs.h>
5b2abdfb A	7	#ifndef lint
5b2abdfb A	8	#ifndef NOID
3d9156a7	9	static char elsieid[] __unused = "@(#)asctime.c 7.9";
5b2abdfb A	10	#endif /* !defined NOID */
5b2abdfb A	11	#endif /* !defined lint */
3d9156a7	12	__FBSDID("$FreeBSD: src/lib/libc/stdtime/asctime.c,v 1.12 2004/06/14 10:31:52 stefanf Exp $");
5b2abdfb A	13
	14	/LINTLIBRARY/
	15
9385eb3d	16	#include "namespace.h"
5b2abdfb	17	#include "private.h"
9385eb3d	18	#include "un-namespace.h"
5b2abdfb A	19	#include "tzfile.h"
	20
	21	/*
3d9156a7	22	** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
5b2abdfb A	23	*/
5b2abdfb A	24
5b2abdfb	25	char *
3d9156a7	26	asctime_r(timeptr, buf)
5b2abdfb	27	const struct tm * timeptr;
3d9156a7	28	char * buf;
5b2abdfb A	29	{
	30	static const char wday_name[][3] = {
	31	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
	32	};
	33	static const char mon_name[][3] = {
	34	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
	35	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
	36	};
9385eb3d A	37	const char * wn;
9385eb3d A	38	const char * mn;
5b2abdfb A	39
	40	if (timeptr->tm_wday < 0 \|\| timeptr->tm_wday >= DAYSPERWEEK)
	41	wn = "???";
	42	else wn = wday_name[timeptr->tm_wday];
	43	if (timeptr->tm_mon < 0 \|\| timeptr->tm_mon >= MONSPERYEAR)
	44	mn = "???";
	45	else mn = mon_name[timeptr->tm_mon];
	46	/*
	47	** The X3J11-suggested format is
	48	** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
	49	** Since the .2 in 02.2d is ignored, we drop it.
	50	*/
3d9156a7	51	(void) sprintf(buf, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
5b2abdfb A	52	wn, mn,
	53	timeptr->tm_mday, timeptr->tm_hour,
	54	timeptr->tm_min, timeptr->tm_sec,
	55	TM_YEAR_BASE + timeptr->tm_year);
3d9156a7 A	56	return buf;
	57	}
	58
	59	/*
	60	** A la X3J11, with core dump avoidance.
	61	*/
	62
	63	char *
	64	asctime(timeptr)
	65	const struct tm * timeptr;
	66	{
	67	/*
	68	** Big enough for something such as
	69	** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
	70	** (two three-character abbreviations, five strings denoting integers,
	71	** three explicit spaces, two explicit colons, a newline,
	72	** and a trailing ASCII nul).
	73	*/
	74	static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
	75	3 + 2 + 1 + 1];
	76
	77	return asctime_r(timeptr, result);
5b2abdfb	78	}