[apple/libc.git] / include / getopt.h

/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
/*	$FreeBSD: src/include/getopt.h,v 1.6 2004/02/24 08:09:20 ache Exp $ */

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Dieter Baron and Thomas Klausner.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#ifndef _GETOPT_H_
#define _GETOPT_H_

#include <sys/cdefs.h>
#include <unistd.h>

/*
 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
 * getopt() is declared here too for GNU programs.
 */
#define no_argument        0
#define required_argument  1
#define optional_argument  2

struct option {
	/* name of long option */
	const char *name;
	/*
	 * one of no_argument, required_argument, and optional_argument:
	 * whether option takes an argument
	 */
	int has_arg;
	/* if not NULL, set *flag to val when option found */
	int *flag;
	/* if flag not NULL, value to set *flag to; else return value */
	int val;
};

__BEGIN_DECLS
int	getopt_long(int, char * const *, const char *,
	const struct option *, int *);
int	getopt_long_only(int, char * const *, const char *,
	const struct option *, int *);
#ifndef _GETOPT
#define	_GETOPT
int	 getopt(int, char * const [], const char *);

extern char *optarg;			/* getopt(3) external variables */
extern int optind, opterr, optopt;
#endif
#ifndef _OPTRESET
#define	_OPTRESET
extern int optreset;			/* getopt(3) external variable */
#endif
__END_DECLS
 
#endif /* !_GETOPT_H_ */
Commit	Line	Data
3d9156a7 A	1	/* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */
	2	/* $FreeBSD: src/include/getopt.h,v 1.6 2004/02/24 08:09:20 ache Exp $ */
	3
5b2abdfb	4	/*-
9385eb3d	5	* Copyright (c) 2000 The NetBSD Foundation, Inc.
5b2abdfb A	6	* All rights reserved.
	7	*
	8	* This code is derived from software contributed to The NetBSD Foundation
9385eb3d	9	* by Dieter Baron and Thomas Klausner.
5b2abdfb A	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions and the following disclaimer.
	16	* 2. Redistributions in binary form must reproduce the above copyright
	17	* notice, this list of conditions and the following disclaimer in the
	18	* documentation and/or other materials provided with the distribution.
	19	* 3. All advertising materials mentioning features or use of this software
	20	* must display the following acknowledgement:
	21	* This product includes software developed by the NetBSD
	22	* Foundation, Inc. and its contributors.
	23	* 4. Neither the name of The NetBSD Foundation nor the names of its
	24	* contributors may be used to endorse or promote products derived
	25	* from this software without specific prior written permission.
	26	*
	27	* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
	28	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	29	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	30	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
	31	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	32	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	33	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	34	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	35	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	36	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	37	* POSSIBILITY OF SUCH DAMAGE.
5b2abdfb A	38	*/
5b2abdfb A	39
9385eb3d A	40	#ifndef _GETOPT_H_
9385eb3d A	41	#define _GETOPT_H_
5b2abdfb	42
9385eb3d	43	#include <sys/cdefs.h>
5b2abdfb A	44	#include <unistd.h>
5b2abdfb A	45
9385eb3d	46	/*
3d9156a7 A	47	* GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
3d9156a7 A	48	* getopt() is declared here too for GNU programs.
9385eb3d	49	*/
9385eb3d A	50	#define no_argument 0
	51	#define required_argument 1
	52	#define optional_argument 2
5b2abdfb	53
9385eb3d A	54	struct option {
	55	/* name of long option */
	56	const char *name;
	57	/*
	58	* one of no_argument, required_argument, and optional_argument:
	59	* whether option takes an argument
	60	*/
	61	int has_arg;
	62	/* if not NULL, set flag to val when option found /
	63	int *flag;
	64	/* if flag not NULL, value to set flag to; else return value /
	65	int val;
	66	};
5b2abdfb	67
9385eb3d	68	__BEGIN_DECLS
3d9156a7 A	69	int getopt_long(int, char * const , const char ,
	70	const struct option , int );
	71	int getopt_long_only(int, char * const , const char ,
	72	const struct option , int );
	73	#ifndef _GETOPT
	74	#define _GETOPT
	75	int getopt(int, char * const [], const char *);
	76
	77	extern char optarg; / getopt(3) external variables */
	78	extern int optind, opterr, optopt;
9385eb3d	79	#endif
3d9156a7 A	80	#ifndef _OPTRESET
	81	#define _OPTRESET
	82	extern int optreset; /* getopt(3) external variable */
	83	#endif
	84	__END_DECLS
9385eb3d A	85
9385eb3d A	86	#endif /* !_GETOPT_H_ */