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      1 /*	$OpenBSD: getopt.h,v 1.2 2008/06/26 05:42:04 ray 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  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef _GETOPT_H_
     34 #define _GETOPT_H_
     35 
     36 /*
     37  * GNU-like getopt_long() and 4.4BSD getsubopt()/optreset extensions
     38  */
     39 #define no_argument        0
     40 #define required_argument  1
     41 #define optional_argument  2
     42 
     43 #ifdef __cplusplus
     44 extern "C" {
     45 #endif
     46 
     47 struct option {
     48 	/* name of long option */
     49 	const char *name;
     50 	/*
     51 	 * one of no_argument, required_argument, and optional_argument:
     52 	 * whether option takes an argument
     53 	 */
     54 	int has_arg;
     55 	/* if not NULL, set *flag to val when option found */
     56 	int *flag;
     57 	/* if flag not NULL, value to set *flag to; else return value */
     58 	int val;
     59 };
     60 
     61 int	 getopt_long(int, char * const *, const char *,
     62 	    const struct option *, int *);
     63 int	 getopt_long_only(int, char * const *, const char *,
     64 	    const struct option *, int *);
     65 #ifndef _GETOPT_DEFINED_
     66 #define _GETOPT_DEFINED_
     67 int	 getopt(int, char * const *, const char *);
     68 int	 getsubopt(char **, char * const *, char **);
     69 
     70 extern   char *optarg;                  /* getopt(3) external variables */
     71 extern   int opterr;
     72 extern   int optind;
     73 extern   int optopt;
     74 extern   int optreset;
     75 extern   char *suboptarg;               /* getsubopt(3) external variable */
     76 #endif
     77 
     78 #ifdef __cplusplus
     79 }
     80 #endif
     81 
     82 #endif /* !_GETOPT_H_ */
     83