1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004
3 Free Software 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 2, or (at your option)
9 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 along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place - Suite 330, Boston, MA 02110-1301, USA. */
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #ifdef _LIBC
25 # include <getopt.h>
26 #else
27 # include "getopt.h"
28 #endif
29 #include "getopt_int.h"
30
31 #include <stdio.h>
32
33 /* Comment out all this code if we are using the GNU C Library, and are not
34 actually compiling the library itself. This code is part of the GNU C
35 Library, but also included in many other GNU distributions. Compiling
36 and linking in this code is a waste when using the GNU C library
37 (especially if it is a shared library). Rather than having every GNU
38 program understand `configure --with-gnu-libc' and omit the object files,
39 it is simpler to just do this in the source for each such file. */
40
41 #define GETOPT_INTERFACE_VERSION 2
42 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
43 #include <gnu-versions.h>
44 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
45 #define ELIDE_CODE
46 #endif
47 #endif
48
49 #ifndef ELIDE_CODE
50
51
52 /* This needs to come after some library #include
53 to get __GNU_LIBRARY__ defined. */
54 #ifdef __GNU_LIBRARY__
55 #include <stdlib.h>
56 #endif
57
58 #ifndef NULL
59 #define NULL 0
60 #endif
61
62 int
63 getopt_long (
64 int argc,
65 char *const *argv,
66 const char *options,
67 const struct option *long_options,
68 int *opt_index
69 )
70 {
71 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
72 }
73
74 int
75 _getopt_long_r (
76 int argc,
77 char *const *argv,
78 const char *options,
79 const struct option *long_options,
80 int *opt_index,
81 struct _getopt_data *d
82 )
83 {
84 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
85 0, d);
86 }
87
88 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
89 If an option that starts with '-' (not '--') doesn't match a long option,
90 but does match a short option, it is parsed as a short option
91 instead. */
92
93 int
94 getopt_long_only (
95 int argc,
96 char *const *argv,
97 const char *options,
98 const struct option *long_options,
99 int *opt_index
100 )
101 {
102 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
103 }
104
105 int
106 _getopt_long_only_r (
107 int argc,
108 char *const *argv,
109 const char *options,
110 const struct option *long_options,
111 int *opt_index,
112 struct _getopt_data *d
113 )
114 {
115 return _getopt_internal_r (argc, argv, options, long_options, opt_index,
116 1, d);
117 }
118
119 #endif /* Not ELIDE_CODE. */
120
121 #ifdef TEST
122
123 #include <stdio.h>
124
125 int
126 main (
127 int argc,
128 char **argv
129 )
130 {
131 int c;
132 int digit_optind = 0;
133
134 while (1)
135 {
136 int this_option_optind = optind ? optind : 1;
137 int option_index = 0;
138 static struct option long_options[] = {
139 {"add", 1, 0, 0},
140 {"append", 0, 0, 0},
141 {"delete", 1, 0, 0},
142 {"verbose", 0, 0, 0},
143 {"create", 0, 0, 0},
144 {"file", 1, 0, 0},
145 {0, 0, 0, 0}
146 };
147
148 c = getopt_long (argc, argv, "abc:d:0123456789",
149 long_options, &option_index);
150 if (c == -1)
151 break;
152
153 switch (c)
154 {
155 case 0:
156 printf ("option %s", long_options[option_index].name);
157 if (optarg)
158 printf (" with arg %s", optarg);
159 printf ("\n");
160 break;
161
162 case '0':
163 case '1':
164 case '2':
165 case '3':
166 case '4':
167 case '5':
168 case '6':
169 case '7':
170 case '8':
171 case '9':
172 if (digit_optind != 0 && digit_optind != this_option_optind)
173 printf ("digits occur in two different argv-elements.\n");
174 digit_optind = this_option_optind;
175 printf ("option %c\n", c);
176 break;
177
178 case 'a':
179 printf ("option a\n");
180 break;
181
182 case 'b':
183 printf ("option b\n");
184 break;
185
186 case 'c':
187 printf ("option c with value `%s'\n", optarg);
188 break;
189
190 case 'd':
191 printf ("option d with value `%s'\n", optarg);
192 break;
193
194 case '?':
195 break;
196
197 default:
198 printf ("?? getopt returned character code 0%o ??\n", c);
199 }
200 }
201
202 if (optind < argc)
203 {
204 printf ("non-option ARGV-elements: ");
205 while (optind < argc)
206 printf ("%s ", argv[optind++]);
207 printf ("\n");
208 }
209
210 exit (0);
211 }
212
213 #endif /* TEST */