/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License, Version 1.0 only

 * (the "License").  You may not use this file except in compliance

 * with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*	Copyright (c) 1988 AT&T	*/

/*	  All Rights Reserved  	*/

/*

 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.15	*/

/*

 * This routine converts time as follows.  The epoch is 0000  Jan  1

 * 1970  GMT.   The  argument  time  is  in seconds since then.  The

 * localtime(t) entry returns a pointer to an array containing:

 *

 *		  seconds (0-59)

 *		  minutes (0-59)

 *		  hours (0-23)

 *		  day of month (1-31)

 *		  month (0-11)

 *		  year

 *		  weekday (0-6, Sun is 0)

 *		  day of the year

 *		  daylight savings flag

 *

 * The routine corrects for daylight saving time and  will  work  in

 * any  time  zone provided "timezone" is adjusted to the difference

 * between Greenwich and local standard time (measured in seconds).

 *

 *	 ascftime(buf, format, t)	-> where t is produced by localtime

 *				           and returns a ptr to a character

 *				           string that has the ascii time in

 *				           the format specified by the format

 *				           argument (see date(1) for format

 *				           syntax).

 *

 *	 cftime(buf, format, t) 	-> just calls ascftime.

 *

 *

 *

 */

#pragma weak ascftime = _ascftime

#pragma weak cftime = _cftime

#include	"synonyms.h"

#include	<mtlib.h>

#include	<stddef.h>

#include	<time.h>

#include	<limits.h>

#include	<stdlib.h>

#include	<thread.h>

#include	<synch.h>

int

cftime(char *buf, char *format, const time_t *t)

{

	struct tm res;

	struct tm *p;

	p = localtime_r(t, &res);

	if (p == NULL) {

		*buf = '\0';

		return (0);

	}

	/* LINTED do not use ascftime() */

	return (ascftime(buf, format, p));

}

int

ascftime(char *buf, const char *format, const struct tm *tm)

{

	/* Set format string, if not already set */

	if (format == NULL || *format == '\0')

		if (((format = getenv("CFTIME")) == 0) || *format == 0)

			format =  "%C";

	return ((int)strftime(buf, LONG_MAX, format, tm));

}