include/getopt.h

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