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 Free Software Foundation, Inc.
4 This file is part of the GNU C Library. Its master source is NOT part of
5 the C library, however. The master source lives in /gd/gnu/lib.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If not,
19 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21 \f
23 #if !defined (__STDC__) || !__STDC__
24 /* This is a separate conditional since some stdc systems
25 reject `defined (const)'. */
26 #ifndef const
27 #define const
28 #endif
29 #endif
31 #ifdef HAVE_CONFIG_H
32 #include "../rrd_config.h"
33 #endif
35 #include "rrd_getopt.h"
37 #include <stdio.h>
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. */
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
55 #ifndef ELIDE_CODE
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
64 #ifndef NULL
65 #define NULL 0
66 #endif
68 int getopt_long(
69 argc,
70 argv,
71 options,
72 long_options,
73 opt_index)
74 int argc;
75 char *const *argv;
76 const char *options;
77 const struct option *long_options;
78 int *opt_index;
79 {
80 return _getopt_internal(argc, argv, options, long_options, opt_index, 0);
81 }
83 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
84 If an option that starts with '-' (not '--') doesn't match a long option,
85 but does match a short option, it is parsed as a short option
86 instead. */
88 int getopt_long_only(
89 argc,
90 argv,
91 options,
92 long_options,
93 opt_index)
94 int argc;
95 char *const *argv;
96 const char *options;
97 const struct option *long_options;
98 int *opt_index;
99 {
100 return _getopt_internal(argc, argv, options, long_options, opt_index, 1);
101 }
104 #endif /* Not ELIDE_CODE. */
105 \f
106 #ifdef TEST
108 #include <stdio.h>
110 int main(
111 argc,
112 argv)
113 int argc;
114 char **argv;
115 {
116 int c;
117 int digit_optind = 0;
118 struct option long_options[] = {
119 {"add", 1, 0, 0},
120 {"append", 0, 0, 0},
121 {"delete", 1, 0, 0},
122 {"verbose", 0, 0, 0},
123 {"create", 0, 0, 0},
124 {"file", 1, 0, 0},
125 {0, 0, 0, 0}
126 };
128 while (1) {
129 int this_option_optind = optind ? optind : 1;
130 int option_index = 0;
132 c = getopt_long(argc, argv, "abc:d:0123456789",
133 long_options, &option_index);
134 if (c == -1)
135 break;
137 switch (c) {
138 case 0:
139 printf("option %s", long_options[option_index].name);
140 if (optarg)
141 printf(" with arg %s", optarg);
142 printf("\n");
143 break;
145 case '0':
146 case '1':
147 case '2':
148 case '3':
149 case '4':
150 case '5':
151 case '6':
152 case '7':
153 case '8':
154 case '9':
155 if (digit_optind != 0 && digit_optind != this_option_optind)
156 printf("digits occur in two different argv-elements.\n");
157 digit_optind = this_option_optind;
158 printf("option %c\n", c);
159 break;
161 case 'a':
162 printf("option a\n");
163 break;
165 case 'b':
166 printf("option b\n");
167 break;
169 case 'c':
170 printf("option c with value `%s'\n", optarg);
171 break;
173 case 'd':
174 printf("option d with value `%s'\n", optarg);
175 break;
177 case '?':
178 break;
180 default:
181 printf("?? getopt returned character code 0%o ??\n", c);
182 }
183 }
185 if (optind < argc) {
186 printf("non-option ARGV-elements: ");
187 while (optind < argc)
188 printf("%s ", argv[optind++]);
189 printf("\n");
190 }
192 exit(0);
193 }
195 #endif /* TEST */