1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987-2016 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 /* !@#$%^&*() !!!!!!!! */
49 #ifdef GAWK
50 #undef ELIDE_CODE
51 #endif
52
53 #ifndef ELIDE_CODE
54
55
56 /* This needs to come after some library #include
57 to get __GNU_LIBRARY__ defined. */
58 #ifdef __GNU_LIBRARY__
59 #include <stdlib.h>
60 #endif
61
62 #ifndef NULL
63 #define NULL 0
64 #endif
65
66 int
67 getopt_long (int argc, char *const *argv, const char *options,
68 const struct option *long_options, int *opt_index)
69 {
70 return _getopt_internal (argc, argv, options, long_options, opt_index, 0, 0);
71 }
72
73 int
74 _getopt_long_r (int argc, char *const *argv, const char *options,
75 const struct option *long_options, int *opt_index,
76 struct _getopt_data *d)
77 {
78 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
79 0, d, 0);
80 }
81
82 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
83 If an option that starts with '-' (not '--') doesn't match a long option,
84 but does match a short option, it is parsed as a short option
85 instead. */
86
87 int
88 getopt_long_only (int argc, char *const *argv, const char *options,
89 const struct option *long_options, int *opt_index)
90 {
91 return _getopt_internal (argc, argv, options, long_options, opt_index, 1, 0);
92 }
93
94 int
95 _getopt_long_only_r (int argc, char *const *argv, const char *options,
96 const struct option *long_options, int *opt_index,
97 struct _getopt_data *d)
98 {
99 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
100 1, d, 0);
101 }
102
103 #endif /* Not ELIDE_CODE. */
104
105 #ifdef TEST
106
107 #include <stdio.h>
108
109 int
110 main (int argc, char **argv)
111 {
112 int c;
113 int digit_optind = 0;
114
115 while (1)
116 {
117 int this_option_optind = optind ? optind : 1;
118 int option_index = 0;
119 static struct option long_options[] =
120 {
121 {"add", 1, 0, 0},
122 {"append", 0, 0, 0},
123 {"delete", 1, 0, 0},
124 {"verbose", 0, 0, 0},
125 {"create", 0, 0, 0},
126 {"file", 1, 0, 0},
127 {0, 0, 0, 0}
128 };
129
130 c = getopt_long (argc, argv, "abc:d:0123456789",
131 long_options, &option_index);
132 if (c == -1)
133 break;
134
135 switch (c)
136 {
137 case 0:
138 printf ("option %s", long_options[option_index].name);
139 if (optarg)
140 printf (" with arg %s", optarg);
141 printf ("\n");
142 break;
143
144 case '0':
145 case '1':
146 case '2':
147 case '3':
148 case '4':
149 case '5':
150 case '6':
151 case '7':
152 case '8':
153 case '9':
154 if (digit_optind != 0 && digit_optind != this_option_optind)
155 printf ("digits occur in two different argv-elements.\n");
156 digit_optind = this_option_optind;
157 printf ("option %c\n", c);
158 break;
159
160 case 'a':
161 printf ("option a\n");
162 break;
163
164 case 'b':
165 printf ("option b\n");
166 break;
167
168 case 'c':
169 printf ("option c with value `%s'\n", optarg);
170 break;
171
172 case 'd':
173 printf ("option d with value `%s'\n", optarg);
174 break;
175
176 case '?':
177 break;
178
179 default:
180 printf ("?? getopt returned character code 0%o ??\n", c);
181 }
182 }
183
184 if (optind < argc)
185 {
186 printf ("non-option ARGV-elements: ");
187 while (optind < argc)
188 printf ("%s ", argv[optind++]);
189 printf ("\n");
190 }
191
192 exit (0);
193 }
194
195 #endif /* TEST */