1/* getopt_long and getopt_long_only entry points for GNU getopt.
2   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005
3     Free Software Foundation, Inc.
4
5   NOTE: This source is derived from an old version taken from the GNU C
6   Library (glibc).
7
8   This program is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published by the
10   Free Software Foundation; either version 2, or (at your option) any
11   later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program; if not, write to the Free Software
20   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
21   USA.  */
22
23#ifdef HAVE_CONFIG_H
24#include <config.h>
25#endif
26
27#if !defined __STDC__ || !__STDC__
28/* This is a separate conditional since some stdc systems
29   reject `defined (const)'.  */
30#ifndef const
31#define const
32#endif
33#endif
34
35#include <stdio.h>
36
37#include "getopt.h"
38
39/* Comment out all this code if we are using the GNU C Library, and are not
40   actually compiling the library itself.  This code is part of the GNU C
41   Library, but also included in many other GNU distributions.  Compiling
42   and linking in this code is a waste when using the GNU C library
43   (especially if it is a shared library).  Rather than having every GNU
44   program understand `configure --with-gnu-libc' and omit the object files,
45   it is simpler to just do this in the source for each such file.  */
46
47#define GETOPT_INTERFACE_VERSION 2
48#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
49#include <gnu-versions.h>
50#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
51#define ELIDE_CODE
52#endif
53#endif
54
55#ifndef ELIDE_CODE
56
57
58/* This needs to come after some library #include
59   to get __GNU_LIBRARY__ defined.  */
60#ifdef __GNU_LIBRARY__
61#include <stdlib.h>
62#endif
63
64#ifndef	NULL
65#define NULL 0
66#endif
67
68int
69getopt_long (int argc,  char *const *argv,  const char *options,
70             const struct option *long_options, int *opt_index)
71{
72  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
73}
74
75/* Like getopt_long, but '-' as well as '--' can indicate a long option.
76   If an option that starts with '-' (not '--') doesn't match a long option,
77   but does match a short option, it is parsed as a short option
78   instead.  */
79
80int
81getopt_long_only (int argc, char *const *argv, const char *options,
82                  const struct option *long_options, int *opt_index)
83{
84  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
85}
86
87
88#endif	/* Not ELIDE_CODE.  */
89
90#ifdef TEST
91
92#include <stdio.h>
93
94int
95main (int argc, char **argv)
96{
97  int c;
98  int digit_optind = 0;
99
100  while (1)
101    {
102      int this_option_optind = optind ? optind : 1;
103      int option_index = 0;
104      static struct option long_options[] =
105      {
106	{"add", 1, 0, 0},
107	{"append", 0, 0, 0},
108	{"delete", 1, 0, 0},
109	{"verbose", 0, 0, 0},
110	{"create", 0, 0, 0},
111	{"file", 1, 0, 0},
112	{0, 0, 0, 0}
113      };
114
115      c = getopt_long (argc, argv, "abc:d:0123456789",
116		       long_options, &option_index);
117      if (c == -1)
118	break;
119
120      switch (c)
121	{
122	case 0:
123	  printf ("option %s", long_options[option_index].name);
124	  if (optarg)
125	    printf (" with arg %s", optarg);
126	  printf ("\n");
127	  break;
128
129	case '0':
130	case '1':
131	case '2':
132	case '3':
133	case '4':
134	case '5':
135	case '6':
136	case '7':
137	case '8':
138	case '9':
139	  if (digit_optind != 0 && digit_optind != this_option_optind)
140	    printf ("digits occur in two different argv-elements.\n");
141	  digit_optind = this_option_optind;
142	  printf ("option %c\n", c);
143	  break;
144
145	case 'a':
146	  printf ("option a\n");
147	  break;
148
149	case 'b':
150	  printf ("option b\n");
151	  break;
152
153	case 'c':
154	  printf ("option c with value `%s'\n", optarg);
155	  break;
156
157	case 'd':
158	  printf ("option d with value `%s'\n", optarg);
159	  break;
160
161	case '?':
162	  break;
163
164	default:
165	  printf ("?? getopt returned character code 0%o ??\n", c);
166	}
167    }
168
169  if (optind < argc)
170    {
171      printf ("non-option ARGV-elements: ");
172      while (optind < argc)
173	printf ("%s ", argv[optind++]);
174      printf ("\n");
175    }
176
177  exit (0);
178}
179
180#endif /* TEST */
181