/*-
 * Copyright (c) 1999, 2000, 2001, 2002, 2003 Lev Walkin <vlm@lionet.info>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: sf_time.h,v 1.2 2005/05/25 21:55:10 vlm Exp $
 */

#ifndef __SF_TIME_H__
#define __SF_TIME_H__

#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif	/* __cplusplus */


/************************/
/*** Time conversions ***/
/************************/

/*
 * Convert RFC-822/1123, ISO-8601, X.208
 * or other types of date/time representation into time_t
 */
time_t strtotime(char *datestring);

/*
 * This function enables caching local time zone information.
 * Use this if you want to quickly process huge amount os strtotime().
 */
void strtotime_zoneinfo_cache(int on_off);


/*
 * Flags to the timetostr() function:
 */
enum timetostr_output_flags {
	TFMT_UNIX	= 0x000,	/* unix_time format */
	TFMT_RFC822	= 0x001,	/* Format described in RFC-822/1123 */
	TFMT_ISO8601	= 0x002,	/* Format described in ISO-8601 */
	TFMT_CTIME	= 0x003,	/* ctime(3) and asctime(3) format */
	TFMT_X208	= 0x004,	/* Format specified by X.208 */
	/* Pure flags to be OR'ed with above */
	TFMT_LOCAL	= 0x100,	/* Construct for local instead of GMT */
	TFMT_UF		= 0x200,	/* User-friendly (detailed) output */
	TFMT_OLD822GMT	= 0x400,	/* Old "...MMM DD YYYY GMT" for HTTP */
};

/*
 * Convert time_t to string. Flags are defined below.
 */
char *timetostr(time_t value, int flags);


#ifdef __cplusplus
}
#endif	/* __cplusplus */

#endif	/* __SF_TIME_H__ */