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/* $NetBSD: getopt.h,v 1.5 2003/04/28 23:16:13 bjh21 Exp $ */
/* $DragonFly: src/include/getopt.h,v 1.2 2005/01/10 16:45:15 joerg 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() and BSD4.4 getsubopt()/optreset extensions
*/
#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 *);
__END_DECLS
#endif /* !_GETOPT_H_ */
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