1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
21 USA. */
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
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 #include "getopt.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, char *const *argv, const char *options,
70 const struct option *long_options, int *opt_index)
71 {
72 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
73 }
74
75 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
76 If an option that starts with '-' (not '--') doesn't match a long option,
77 but does match a short option, it is parsed as a short option
78 instead. */
79
80 int
getopt_long_only(int argc,char * const * argv,const char * options,const struct option * long_options,int * opt_index)81 getopt_long_only (int argc, char *const *argv, const char *options,
82 const struct option *long_options, int *opt_index)
83 {
84 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
85 }
86
87
88 #endif /* Not ELIDE_CODE. */
89
90 #ifdef TEST
91
92 #include <stdio.h>
93
94 int
main(int argc,char ** argv)95 main (int argc, char **argv)
96 {
97 int c;
98 int digit_optind = 0;
99
100 while (1)
101 {
102 int this_option_optind = optind ? optind : 1;
103 int option_index = 0;
104 static struct option long_options[] =
105 {
106 {"add", 1, 0, 0},
107 {"append", 0, 0, 0},
108 {"delete", 1, 0, 0},
109 {"verbose", 0, 0, 0},
110 {"create", 0, 0, 0},
111 {"file", 1, 0, 0},
112 {0, 0, 0, 0}
113 };
114
115 c = getopt_long (argc, argv, "abc:d:0123456789",
116 long_options, &option_index);
117 if (c == -1)
118 break;
119
120 switch (c)
121 {
122 case 0:
123 printf ("option %s", long_options[option_index].name);
124 if (optarg)
125 printf (" with arg %s", optarg);
126 printf ("\n");
127 break;
128
129 case '0':
130 case '1':
131 case '2':
132 case '3':
133 case '4':
134 case '5':
135 case '6':
136 case '7':
137 case '8':
138 case '9':
139 if (digit_optind != 0 && digit_optind != this_option_optind)
140 printf ("digits occur in two different argv-elements.\n");
141 digit_optind = this_option_optind;
142 printf ("option %c\n", c);
143 break;
144
145 case 'a':
146 printf ("option a\n");
147 break;
148
149 case 'b':
150 printf ("option b\n");
151 break;
152
153 case 'c':
154 printf ("option c with value `%s'\n", optarg);
155 break;
156
157 case 'd':
158 printf ("option d with value `%s'\n", optarg);
159 break;
160
161 case '?':
162 break;
163
164 default:
165 printf ("?? getopt returned character code 0%o ??\n", c);
166 }
167 }
168
169 if (optind < argc)
170 {
171 printf ("non-option ARGV-elements: ");
172 while (optind < argc)
173 printf ("%s ", argv[optind++]);
174 printf ("\n");
175 }
176
177 exit (0);
178 }
179
180 #endif /* TEST */
181