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: This source is derived from an old version taken from the GNU C
6 Library (glibc).
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(int argc,char * const * argv,const char * options,const struct option * long_options,int * opt_index)69 getopt_long(int argc,
70 char * const *argv,
71 const char *options,
72 const struct option *long_options,
73 int *opt_index)
74 {
75 return _getopt_internal(argc, argv, options, long_options, opt_index, 0);
76 }
77
78 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
79 If an option that starts with '-' (not '--') doesn't match a long option,
80 but does match a short option, it is parsed as a short option
81 instead. */
82
83 int
getopt_long_only(int argc,char * const * argv,const char * options,const struct option * long_options,int * opt_index)84 getopt_long_only(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
main(int argc,char ** argv)101 main(int argc, char **argv)
102 {
103 int c;
104 int digit_optind = 0;
105
106 while (1) {
107 int this_option_optind = optind ? optind : 1;
108 int option_index = 0;
109 static struct option long_options[] = {
110 {"add", 1, 0, 0},
111 {"append", 0, 0, 0},
112 {"delete", 1, 0, 0},
113 {"verbose", 0, 0, 0},
114 {"create", 0, 0, 0},
115 {"file", 1, 0, 0},
116 {0, 0, 0, 0}
117 };
118
119 c = getopt_long(argc, argv, "abc:d:0123456789",
120 long_options, &option_index);
121
122 if (c == -1)
123 break;
124
125 switch (c) {
126 case 0:
127 printf ("option %s", long_options[option_index].name);
128 if (optarg)
129 printf (" with arg %s", optarg);
130
131 printf ("\n");
132 break;
133 case '0':
134 case '1':
135 case '2':
136 case '3':
137 case '4':
138 case '5':
139 case '6':
140 case '7':
141 case '8':
142 case '9':
143 if (digit_optind != 0 && digit_optind != this_option_optind)
144 printf ("digits occur in two different argv-elements.\n");
145 digit_optind = this_option_optind;
146 printf ("option %c\n", c);
147 break;
148
149 case 'a':
150 printf ("option a\n");
151 break;
152
153 case 'b':
154 printf ("option b\n");
155 break;
156
157 case 'c':
158 printf ("option c with value `%s'\n", optarg);
159 break;
160
161 case 'd':
162 printf ("option d with value `%s'\n", optarg);
163 break;
164
165 case '?':
166 break;
167
168 default:
169 printf ("?? getopt returned character code 0%o ??\n", c);
170 }
171 }
172
173 if (optind < argc) {
174 printf ("non-option ARGV-elements: ");
175
176 while (optind < argc)
177 printf ("%s ", argv[optind++]);
178 printf ("\n");
179 }
180
181 exit(0);
182 }
183
184 #endif /* TEST */
185