1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987, 88, 89, 90, 91, 92, 1993, 1994
3 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
8 later version.
10 This program 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
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
18 \f
19 #ifdef HAVE_CONFIG_H
20 #include <config.h>
21 #endif
23 #include "getopt.h"
25 #if !defined (__STDC__) || !__STDC__
26 /* This is a separate conditional since some stdc systems
27 reject `defined (const)'. */
28 #ifndef const
29 #define const
30 #endif
31 #endif
33 #include <stdio.h>
35 /* Comment out all this code if we are using the GNU C Library, and are not
36 actually compiling the library itself. This code is part of the GNU C
37 Library, but also included in many other GNU distributions. Compiling
38 and linking in this code is a waste when using the GNU C library
39 (especially if it is a shared library). Rather than having every GNU
40 program understand `configure --with-gnu-libc' and omit the object files,
41 it is simpler to just do this in the source for each such file. */
43 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
46 /* This needs to come after some library #include
47 to get __GNU_LIBRARY__ defined. */
48 #ifdef __GNU_LIBRARY__
49 #include <stdlib.h>
50 #else
51 char *getenv ();
52 #endif
54 #ifndef NULL
55 #define NULL 0
56 #endif
58 int
59 getopt_long (argc, argv, options, long_options, opt_index)
60 int argc;
61 char *const *argv;
62 const char *options;
63 const struct option *long_options;
64 int *opt_index;
65 {
66 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
67 }
69 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
70 If an option that starts with '-' (not '--') doesn't match a long option,
71 but does match a short option, it is parsed as a short option
72 instead. */
74 int
75 getopt_long_only (argc, argv, options, long_options, opt_index)
76 int argc;
77 char *const *argv;
78 const char *options;
79 const struct option *long_options;
80 int *opt_index;
81 {
82 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
83 }
86 #endif /* _LIBC or not __GNU_LIBRARY__. */
87 \f
88 #ifdef TEST
90 #include <stdio.h>
92 int
93 main (argc, argv)
94 int argc;
95 char **argv;
96 {
97 int c;
98 int digit_optind = 0;
100 while (1) {
101 int this_option_optind = optind ? optind : 1;
102 int option_index = 0;
103 static struct option long_options[] = {
104 {"add", 1, 0, 0},
105 {"append", 0, 0, 0},
106 {"delete", 1, 0, 0},
107 {"verbose", 0, 0, 0},
108 {"create", 0, 0, 0},
109 {"file", 1, 0, 0},
110 {0, 0, 0, 0}
111 };
113 c = getopt_long (argc, argv, "abc:d:0123456789",
114 long_options, &option_index);
115 if (c == EOF)
116 break;
118 switch (c) {
119 case 0:
120 printf ("option %s", long_options[option_index].name);
121 if (optarg)
122 printf (" with arg %s", optarg);
123 printf ("\n");
124 break;
126 case '0':
127 case '1':
128 case '2':
129 case '3':
130 case '4':
131 case '5':
132 case '6':
133 case '7':
134 case '8':
135 case '9':
136 if (digit_optind != 0 && digit_optind != this_option_optind)
137 printf ("digits occur in two different argv-elements.\n");
138 digit_optind = this_option_optind;
139 printf ("option %c\n", c);
140 break;
142 case 'a':
143 printf ("option a\n");
144 break;
146 case 'b':
147 printf ("option b\n");
148 break;
150 case 'c':
151 printf ("option c with value `%s'\n", optarg);
152 break;
154 case 'd':
155 printf ("option d with value `%s'\n", optarg);
156 break;
158 case '?':
159 break;
161 default:
162 printf ("?? getopt returned character code 0%o ??\n", c);
163 }
164 }
166 if (optind < argc) {
167 printf ("non-option ARGV-elements: ");
168 while (optind < argc)
169 printf ("%s ", argv[optind++]);
170 printf ("\n");
171 }
173 exit (0);
174 }
176 #endif /* TEST */