1/* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#ifdef HAVE_CONFIG_H
20#include <config.h>
21#endif
22
23#ifdef _LIBC
24# include <getopt.h>
25#else
26# include "getopt.h"
27#endif
28#include "getopt_int.h"
29
30#include <stdio.h>
31
32/* Comment out all this code if we are using the GNU C Library, and are not
33 actually compiling the library itself. This code is part of the GNU C
34 Library, but also included in many other GNU distributions. Compiling
35 and linking in this code is a waste when using the GNU C library
36 (especially if it is a shared library). Rather than having every GNU
37 program understand `configure --with-gnu-libc' and omit the object files,
38 it is simpler to just do this in the source for each such file. */
39
40#define GETOPT_INTERFACE_VERSION 2
41#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
42#include <gnu-versions.h>
43#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
44#define ELIDE_CODE
45#endif
46#endif
47
48#ifndef ELIDE_CODE
49
50
51/* This needs to come after some library #include
52 to get __GNU_LIBRARY__ defined. */
53#ifdef __GNU_LIBRARY__
54#include <stdlib.h>
55#endif
56
57#ifndef NULL
58#define NULL 0
59#endif
60
61int
62getopt_long (int argc, char *const *argv, const char *options,
63 const struct option *long_options, int *opt_index)
64{
65 return _getopt_internal (argc, argv, options, long_options, opt_index, 0, 0);
66}
67
68int
69_getopt_long_r (int argc, char *const *argv, const char *options,
70 const struct option *long_options, int *opt_index,
71 struct _getopt_data *d)
72{
73 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
74 0, d, 0);
75}
76
77/* Like getopt_long, but '-' as well as '--' can indicate a long option.
78 If an option that starts with '-' (not '--') doesn't match a long option,
79 but does match a short option, it is parsed as a short option
80 instead. */
81
82int
83getopt_long_only (int argc, char *const *argv, const char *options,
84 const struct option *long_options, int *opt_index)
85{
86 return _getopt_internal (argc, argv, options, long_options, opt_index, 1, 0);
87}
88
89int
90_getopt_long_only_r (int argc, char *const *argv, const char *options,
91 const struct option *long_options, int *opt_index,
92 struct _getopt_data *d)
93{
94 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
95 1, d, 0);
96}
97
98#endif /* Not ELIDE_CODE. */
99
100#ifdef TEST
101
102#include <stdio.h>
103
104int
105main (int argc, char **argv)
106{
107 int c;
108 int digit_optind = 0;
109
110 while (1)
111 {
112 int this_option_optind = optind ? optind : 1;
113 int option_index = 0;
114 static struct option long_options[] =
115 {
116 {"add", 1, 0, 0},
117 {"append", 0, 0, 0},
118 {"delete", 1, 0, 0},
119 {"verbose", 0, 0, 0},
120 {"create", 0, 0, 0},
121 {"file", 1, 0, 0},
122 {0, 0, 0, 0}
123 };
124
125 c = getopt_long (argc, argv, "abc:d:0123456789",
126 long_options, &option_index);
127 if (c == -1)
128 break;
129
130 switch (c)
131 {
132 case 0:
133 printf ("option %s", long_options[option_index].name);
134 if (optarg)
135 printf (" with arg %s", optarg);
136 printf ("\n");
137 break;
138
139 case '0':
140 case '1':
141 case '2':
142 case '3':
143 case '4':
144 case '5':
145 case '6':
146 case '7':
147 case '8':
148 case '9':
149 if (digit_optind != 0 && digit_optind != this_option_optind)
150 printf ("digits occur in two different argv-elements.\n");
151 digit_optind = this_option_optind;
152 printf ("option %c\n", c);
153 break;
154
155 case 'a':
156 printf ("option a\n");
157 break;
158
159 case 'b':
160 printf ("option b\n");
161 break;
162
163 case 'c':
164 printf ("option c with value `%s'\n", optarg);
165 break;
166
167 case 'd':
168 printf ("option d with value `%s'\n", optarg);
169 break;
170
171 case '?':
172 break;
173
174 default:
175 printf ("?? getopt returned character code 0%o ??\n", c);
176 }
177 }
178
179 if (optind < argc)
180 {
181 printf ("non-option ARGV-elements: ");
182 while (optind < argc)
183 printf ("%s ", argv[optind++]);
184 printf ("\n");
185 }
186
187 exit (0);
188}
189
190#endif /* TEST */
191