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      1 /*	$OpenBSD: getopt.h,v 1.1 2002/12/03 20:24:29 millert Exp $	*/
      2 /*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
      3 
      4 /*-
      5  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to The NetBSD Foundation
      9  * by Dieter Baron and Thomas Klausner.
     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.
     38  */
     39 
     40 #ifndef _GETOPT_H_
     41 #define _GETOPT_H_
     42 
     43 #include <sys/cdefs.h>
     44 
     45 /*
     46  * GNU-like getopt_long() and 4.4BSD 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 int	 getopt_long_only(int, char * const *, const char *,
     70 	    const struct option *, int *);
     71 #ifndef _GETOPT_DEFINED_
     72 #define _GETOPT_DEFINED_
     73 int	 getopt(int, char * const *, const char *);
     74 int	 getsubopt(char **, char * const *, char **);
     75 
     76 extern   char *optarg;                  /* getopt(3) external variables */
     77 extern   int opterr;
     78 extern   int optind;
     79 extern   int optopt;
     80 extern   int optreset;
     81 extern   char *suboptarg;               /* getsubopt(3) external variable */
     82 #endif
     83 __END_DECLS
     84 
     85 #endif /* !_GETOPT_H_ */
     86