usr/src/head/getopt.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  24  *
  25  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28
  29 /*
  30  * GNU-like getopt_long(), getopt_long_only().
  31  * Solaris-specific getopt_clip().
  32  */
  33
  34 #ifndef _GETOPT_H
  35 #define _GETOPT_H
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41
  42 /*
  43  * Values for has_arg field.
  44  *
  45  * optional_argument is not supported by getopt_clip()
  46  */
  47 #define no_argument             0
  48 #define required_argument       1
  49 #define optional_argument       2
  50
  51 struct option {
  52         char *name;     /* name of long option */
  53         int has_arg;    /* whether option takes an argument */
  54         int *flag;      /* if not NULL, set *flag to val when option found */
  55         int val;        /* if flag is not NULL, value to set *flag to. */
  56                         /* if flag is NULL, return value */
  57 };
  58
  59 /*
  60  * External variables used by these routines.
  61  */
  62 extern char *optarg;
  63 extern int  opterr;
  64 extern int  optind;
  65 extern int  optopt;
  66
  67 /*
  68  * The use of getopt_long_only in new development is strongly discouraged.
  69  */
  70 extern int      getopt_long(int, char * const *, const char *,
  71                     const struct option *, int *);
  72 extern int      getopt_long_only(int, char * const *, const char *,
  73                     const struct option *, int *);
  74 extern int      getopt_clip(int, char * const *, const char *,
  75                     const struct option *, int *);
  76
  77 #ifdef __cplusplus
  78 }
  79 #endif
  80
  81 #endif  /* _GETOPT_H */