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
3 Free Software Foundation, Inc.
4
5 NOTE: The canonical source of this file is maintained with the GNU C Library.
6 Bugs can be reported to bug-glibc@gnu.org.
7
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 USA. */
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26
27 #include "getopt.h"
28
29 #if !defined __STDC__ || !__STDC__
30 /* This is a separate conditional since some stdc systems
31 reject `defined (const)'. */
32 #ifndef const
33 #define const
34 #endif
35 #endif
36
37 #include <stdio.h>
38
39 /* Comment out all this code if we are using the GNU C Library, and are not
40 actually compiling the library itself. This code is part of the GNU C
41 Library, but also included in many other GNU distributions. Compiling
42 and linking in this code is a waste when using the GNU C library
43 (especially if it is a shared library). Rather than having every GNU
44 program understand `configure --with-gnu-libc' and omit the object files,
45 it is simpler to just do this in the source for each such file. */
46
47 #define GETOPT_INTERFACE_VERSION 2
48 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
49 #include <gnu-versions.h>
50 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
51 #define ELIDE_CODE
52 #endif
53 #endif
54
55 #ifndef ELIDE_CODE
56
57
58 /* This needs to come after some library #include
59 to get __GNU_LIBRARY__ defined. */
60 #ifdef __GNU_LIBRARY__
61 #include <stdlib.h>
62 #endif
63
64 #ifndef NULL
65 #define NULL 0
66 #endif
67
68 int
getopt_long(argc,argv,options,long_options,opt_index)69 getopt_long (argc, argv, options, long_options, opt_index)
70 int argc;
71 char *const *argv;
72 const char *options;
73 const struct option *long_options;
74 int *opt_index;
75 {
76 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
77 }
78
79 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
80 If an option that starts with '-' (not '--') doesn't match a long option,
81 but does match a short option, it is parsed as a short option
82 instead. */
83
84 int
getopt_long_only(argc,argv,options,long_options,opt_index)85 getopt_long_only (argc, argv, options, long_options, opt_index)
86 int argc;
87 char *const *argv;
88 const char *options;
89 const struct option *long_options;
90 int *opt_index;
91 {
92 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
93 }
94
95
96 #endif /* Not ELIDE_CODE. */
97
98 #ifdef TEST
99
100 #include <stdio.h>
101
102 int
main(argc,argv)103 main (argc, argv)
104 int argc;
105 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