1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
3 Free Software Foundation, Inc.
4
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.
9
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.
14
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
19 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include "getopt.h"
24
25 #if !__STDC__ && !defined(const) && IN_GCC
26 #define const
27 #endif
28
29 #include <stdio.h>
30
31 /* Comment out all this code if we are using the GNU C Library, and are not
32 actually compiling the library itself. This code is part of the GNU C
33 Library, but also included in many other GNU distributions. Compiling
34 and linking in this code is a waste when using the GNU C library
35 (especially if it is a shared library). Rather than having every GNU
36 program understand `configure --with-gnu-libc' and omit the object files,
37 it is simpler to just do this in the source for each such file. */
38
39 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
40
41
42 /* This needs to come after some library #include
43 to get __GNU_LIBRARY__ defined. */
44 #ifdef __GNU_LIBRARY__
45 #include <stdlib.h>
46 #else
47 char *getenv ();
48 #endif
49
50 #ifndef NULL
51 #define NULL 0
52 #endif
53
54 int
getopt_long(argc,argv,options,long_options,opt_index)55 getopt_long (argc, argv, options, long_options, opt_index)
56 int argc;
57 char *const *argv;
58 const char *options;
59 const struct option *long_options;
60 int *opt_index;
61 {
62 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
63 }
64
65 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
66 If an option that starts with '-' (not '--') doesn't match a long option,
67 but does match a short option, it is parsed as a short option
68 instead. */
69
70 int
getopt_long_only(argc,argv,options,long_options,opt_index)71 getopt_long_only (argc, argv, options, long_options, opt_index)
72 int argc;
73 char *const *argv;
74 const char *options;
75 const struct option *long_options;
76 int *opt_index;
77 {
78 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
79 }
80
81
82 #endif /* _LIBC or not __GNU_LIBRARY__. */
83
84 #ifdef TEST
85
86 #include <stdio.h>
87
88 int
main(argc,argv)89 main (argc, argv)
90 int argc;
91 char **argv;
92 {
93 int c;
94 int digit_optind = 0;
95
96 while (1)
97 {
98 int this_option_optind = optind ? optind : 1;
99 int option_index = 0;
100 static struct option long_options[] =
101 {
102 {"add", 1, 0, 0},
103 {"append", 0, 0, 0},
104 {"delete", 1, 0, 0},
105 {"verbose", 0, 0, 0},
106 {"create", 0, 0, 0},
107 {"file", 1, 0, 0},
108 {0, 0, 0, 0}
109 };
110
111 c = getopt_long (argc, argv, "abc:d:0123456789",
112 long_options, &option_index);
113 if (c == EOF)
114 break;
115
116 switch (c)
117 {
118 case 0:
119 printf ("option %s", long_options[option_index].name);
120 if (optarg)
121 printf (" with arg %s", optarg);
122 printf ("\n");
123 break;
124
125 case '0':
126 case '1':
127 case '2':
128 case '3':
129 case '4':
130 case '5':
131 case '6':
132 case '7':
133 case '8':
134 case '9':
135 if (digit_optind != 0 && digit_optind != this_option_optind)
136 printf ("digits occur in two different argv-elements.\n");
137 digit_optind = this_option_optind;
138 printf ("option %c\n", c);
139 break;
140
141 case 'a':
142 printf ("option a\n");
143 break;
144
145 case 'b':
146 printf ("option b\n");
147 break;
148
149 case 'c':
150 printf ("option c with value `%s'\n", optarg);
151 break;
152
153 case 'd':
154 printf ("option d with value `%s'\n", optarg);
155 break;
156
157 case '?':
158 break;
159
160 default:
161 printf ("?? getopt returned character code 0%o ??\n", c);
162 }
163 }
164
165 if (optind < argc)
166 {
167 printf ("non-option ARGV-elements: ");
168 while (optind < argc)
169 printf ("%s ", argv[optind++]);
170 printf ("\n");
171 }
172
173 exit (0);
174 }
175
176 #endif /* TEST */
177