1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
28 #include "getopt_int.h"
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. */
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
51 /* This needs to come after some library #include
52 to get __GNU_LIBRARY__ defined. */
53 #ifdef __GNU_LIBRARY__
62 getopt_long (int argc, char *const *argv, const char *options,
63 const struct option *long_options, int *opt_index)
65 return _getopt_internal (argc, argv, options, long_options, opt_index, 0, 0);
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)
73 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
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
83 getopt_long_only (int argc, char *const *argv, const char *options,
84 const struct option *long_options, int *opt_index)
86 return _getopt_internal (argc, argv, options, long_options, opt_index, 1, 0);
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)
94 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
98 #endif /* Not ELIDE_CODE. */
105 main (int argc, char **argv)
108 int digit_optind = 0;
112 int this_option_optind = optind ? optind : 1;
113 int option_index = 0;
114 static struct option long_options[] =
119 {"verbose", 0, 0, 0},
125 c = getopt_long (argc, argv, "abc:d:0123456789",
126 long_options, &option_index);
133 printf ("option %s", long_options[option_index].name);
135 printf (" with arg %s", optarg);
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);
156 printf ("option a\n");
160 printf ("option b\n");
164 printf ("option c with value `%s'\n", optarg);
168 printf ("option d with value `%s'\n", optarg);
175 printf ("?? getopt returned character code 0%o ??\n", c);
181 printf ("non-option ARGV-elements: ");
182 while (optind < argc)
183 printf ("%s ", argv[optind++]);