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getopt.h revision 1.7.16.1 
      1 /*	$NetBSD: getopt.h,v 1.7.16.1 2008/01/09 01:33:04 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Dieter Baron and Thomas Klausner.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _GETOPT_H_
     40 #define _GETOPT_H_
     41 
     42 #include <sys/cdefs.h>
     43 #include <unistd.h>
     44 
     45 /*
     46  * Gnu like getopt_long() and BSD4.4 getsubopt()/optreset extensions
     47  */
     48 #define no_argument        0
     49 #define required_argument  1
     50 #define optional_argument  2
     51 
     52 struct option {
     53 	/* name of long option */
     54 	const char *name;
     55 	/*
     56 	 * one of no_argument, required_argument, and optional_argument:
     57 	 * whether option takes an argument
     58 	 */
     59 	int has_arg;
     60 	/* if not NULL, set *flag to val when option found */
     61 	int *flag;
     62 	/* if flag not NULL, value to set *flag to; else return value */
     63 	int val;
     64 };
     65 
     66 __BEGIN_DECLS
     67 int getopt_long(int, char * const *, const char *,
     68     const struct option *, int *);
     69 __END_DECLS
     70 
     71 #endif /* !_GETOPT_H_ */
     72