nettle  3.7.3
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getopt1.c
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1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2  Copyright (C) 1987-2014 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 
61 int
62 getopt_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 
68 int
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 
82 int
83 getopt_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 
89 int
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 
104 int
105 main (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 */
int main(int argc, char **argv)
Definition: aesdata.c:199
int getopt_long_only(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index)
Definition: getopt1.c:83
int getopt_long(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index)
Definition: getopt1.c:62
int _getopt_long_only_r(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index, struct _getopt_data *d)
Definition: getopt1.c:90
int _getopt_long_r(int argc, char *const *argv, const char *options, const struct option *long_options, int *opt_index, struct _getopt_data *d)
Definition: getopt1.c:69
int _getopt_internal(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longind, int long_only, int posixly_correct)
Definition: getopt.c:1167
int _getopt_internal_r(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longind, int long_only, struct _getopt_data *d, int posixly_correct)
Definition: getopt.c:392
int optind
Definition: getopt.c:122
char * optarg
Definition: getopt.c:107
Definition: getopt.h:105
const char * name
Definition: getopt.h:106