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getopt1.c
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 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library 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 GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
20
21 #ifdef HAVE_CONFIG_H
22 #include <config.h>
23 #endif
24
25 #include "getopt.h"
26
27 #if !defined __STDC__ || !__STDC__
28 /* This is a separate conditional since some stdc systems
29 reject `defined (const)'. */
30 #ifndef const
31 #define const
32 #endif
33 #endif
34
35 #include <stdio.h>
36
37 /* Comment out all this code if we are using the GNU C Library, and are not
38 actually compiling the library itself. This code is part of the GNU C
39 Library, but also included in many other GNU distributions. Compiling
40 and linking in this code is a waste when using the GNU C library
41 (especially if it is a shared library). Rather than having every GNU
42 program understand `configure --with-gnu-libc' and omit the object files,
43 it is simpler to just do this in the source for each such file. */
44
45 #define GETOPT_INTERFACE_VERSION 2
46 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
47 #include <gnu-versions.h>
48 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
49 #define ELIDE_CODE
50 #endif
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 (argc, argv, options, long_options, opt_index)
68 int argc;
69 char *const *argv;
70 const char *options;
71 const struct option *long_options;
72 int *opt_index;
73 {
74 return _getopt_internal (argc, argv, options, long_options, opt_index, 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 (argc, argv, options, long_options, opt_index)
84 int argc;
85 char *const *argv;
86 const char *options;
87 const struct option *long_options;
88 int *opt_index;
89 {
90 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
91 }
92
93
94 #endif /* Not ELIDE_CODE. */
95
96 #ifdef TEST
97
98 #include <stdio.h>
99
100 int
101 main (argc, argv)
102 int argc;
103 char **argv;
104 {
105 int c;
106 int digit_optind = 0;
107
108 while (1)
109 {
110 int this_option_optind = optind ? optind : 1;
111 int option_index = 0;
112 static struct option long_options[] =
113 {
114 {"add", 1, 0, 0},
115 {"append", 0, 0, 0},
116 {"delete", 1, 0, 0},
117 {"verbose", 0, 0, 0},
118 {"create", 0, 0, 0},
119 {"file", 1, 0, 0},
120 {0, 0, 0, 0}
121 };
122
123 c = getopt_long (argc, argv, "abc:d:0123456789",
124 long_options, &option_index);
125 if (c == -1)
126 break;
127
128 switch (c)
129 {
130 case 0:
131 printf ("option %s", long_options[option_index].name);
132 if (optarg)
133 printf (" with arg %s", optarg);
134 printf ("\n");
135 break;
136
137 case '0':
138 case '1':
139 case '2':
140 case '3':
141 case '4':
142 case '5':
143 case '6':
144 case '7':
145 case '8':
146 case '9':
147 if (digit_optind != 0 && digit_optind != this_option_optind)
148 printf ("digits occur in two different argv-elements.\n");
149 digit_optind = this_option_optind;
150 printf ("option %c\n", c);
151 break;
152
153 case 'a':
154 printf ("option a\n");
155 break;
156
157 case 'b':
158 printf ("option b\n");
159 break;
160
161 case 'c':
162 printf ("option c with value `%s'\n", optarg);
163 break;
164
165 case 'd':
166 printf ("option d with value `%s'\n", optarg);
167 break;
168
169 case '?':
170 break;
171
172 default:
173 printf ("?? getopt returned character code 0%o ??\n", c);
174 }
175 }
176
177 if (optind < argc)
178 {
179 printf ("non-option ARGV-elements: ");
180 while (optind < argc)
181 printf ("%s ", argv[optind++]);
182 printf ("\n");
183 }
184
185 exit (0);
186 }
187
188 #endif /* TEST */
option
Definition: gnugetopt.h:94