1/* getopt_long and getopt_long_only entry points for GNU getopt.
2   Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2012 Free Software
3   Foundation, Inc.
4   This file is part of the GNU C Library.
5
6   This program is free software: you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 3 of the License, or
9   (at your option) any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
18
19#ifdef _LIBC
20# include <getopt.h>
21#else
22# include <config.h>
23# include "getopt.h"
24#endif
25#include "getopt_int.h"
26
27#include <stdio.h>
28
29/* This needs to come after some library #include
30   to get __GNU_LIBRARY__ defined.  */
31#ifdef __GNU_LIBRARY__
32#include <stdlib.h>
33#endif
34
35#ifndef NULL
36#define NULL 0
37#endif
38
39int
40getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
41             const struct option *long_options, int *opt_index)
42{
43  return _getopt_internal (argc, (char **) argv, options, long_options,
44                           opt_index, 0, 0);
45}
46
47int
48_getopt_long_r (int argc, char **argv, const char *options,
49                const struct option *long_options, int *opt_index,
50                struct _getopt_data *d)
51{
52  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
53                             0, d, 0);
54}
55
56/* Like getopt_long, but '-' as well as '--' can indicate a long option.
57   If an option that starts with '-' (not '--') doesn't match a long option,
58   but does match a short option, it is parsed as a short option
59   instead.  */
60
61int
62getopt_long_only (int argc, char *__getopt_argv_const *argv,
63                  const char *options,
64                  const struct option *long_options, int *opt_index)
65{
66  return _getopt_internal (argc, (char **) argv, options, long_options,
67                           opt_index, 1, 0);
68}
69
70int
71_getopt_long_only_r (int argc, char **argv, const char *options,
72                     const struct option *long_options, int *opt_index,
73                     struct _getopt_data *d)
74{
75  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
76                             1, d, 0);
77}
78
79
80#ifdef TEST
81
82#include <stdio.h>
83
84int
85main (int argc, char **argv)
86{
87  int c;
88  int digit_optind = 0;
89
90  while (1)
91    {
92      int this_option_optind = optind ? optind : 1;
93      int option_index = 0;
94      static const struct option long_options[] =
95      {
96        {"add", 1, 0, 0},
97        {"append", 0, 0, 0},
98        {"delete", 1, 0, 0},
99        {"verbose", 0, 0, 0},
100        {"create", 0, 0, 0},
101        {"file", 1, 0, 0},
102        {0, 0, 0, 0}
103      };
104
105      c = getopt_long (argc, argv, "abc:d:0123456789",
106                       long_options, &option_index);
107      if (c == -1)
108        break;
109
110      switch (c)
111        {
112        case 0:
113          printf ("option %s", long_options[option_index].name);
114          if (optarg)
115            printf (" with arg %s", optarg);
116          printf ("\n");
117          break;
118
119        case '0':
120        case '1':
121        case '2':
122        case '3':
123        case '4':
124        case '5':
125        case '6':
126        case '7':
127        case '8':
128        case '9':
129          if (digit_optind != 0 && digit_optind != this_option_optind)
130            printf ("digits occur in two different argv-elements.\n");
131          digit_optind = this_option_optind;
132          printf ("option %c\n", c);
133          break;
134
135        case 'a':
136          printf ("option a\n");
137          break;
138
139        case 'b':
140          printf ("option b\n");
141          break;
142
143        case 'c':
144          printf ("option c with value '%s'\n", optarg);
145          break;
146
147        case 'd':
148          printf ("option d with value '%s'\n", optarg);
149          break;
150
151        case '?':
152          break;
153
154        default:
155          printf ("?? getopt returned character code 0%o ??\n", c);
156        }
157    }
158
159  if (optind < argc)
160    {
161      printf ("non-option ARGV-elements: ");
162      while (optind < argc)
163        printf ("%s ", argv[optind++]);
164      printf ("\n");
165    }
166
167  exit (0);
168}
169
170#endif /* TEST */
171