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
22 #ifdef HAVE_CONFIG_H
23 #include "../rrd_config.h"
24 #endif
26 #include "rrd_getopt.h"
28 #if !defined (__STDC__) || !__STDC__
29 /* This is a separate conditional since some stdc systems
30 reject `defined (const)'. */
31 #ifndef const
32 #define const
33 #endif
34 #endif
36 #include <stdio.h>
38 /* Comment out all this code if we are using the GNU C Library, and are not
39 actually compiling the library itself. This code is part of the GNU C
40 Library, but also included in many other GNU distributions. Compiling
41 and linking in this code is a waste when using the GNU C library
42 (especially if it is a shared library). Rather than having every GNU
43 program understand `configure --with-gnu-libc' and omit the object files,
44 it is simpler to just do this in the source for each such file. */
46 #define GETOPT_INTERFACE_VERSION 2
47 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
48 #include <gnu-versions.h>
49 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
50 #define ELIDE_CODE
51 #endif
52 #endif
54 #ifndef ELIDE_CODE
57 /* This needs to come after some library #include
58 to get __GNU_LIBRARY__ defined. */
59 #ifdef __GNU_LIBRARY__
60 #include <stdlib.h>
61 #endif
63 #ifndef NULL
64 #define NULL 0
65 #endif
67 int getopt_long(
68 argc,
69 argv,
70 options,
71 long_options,
72 opt_index)
73 int argc;
74 char *const *argv;
75 const char *options;
76 const struct option *long_options;
77 int *opt_index;
78 {
79 return _getopt_internal(argc, argv, options, long_options, opt_index, 0);
80 }
82 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
83 If an option that starts with '-' (not '--') doesn't match a long option,
84 but does match a short option, it is parsed as a short option
85 instead. */
87 int getopt_long_only(
88 argc,
89 argv,
90 options,
91 long_options,
92 opt_index)
93 int argc;
94 char *const *argv;
95 const char *options;
96 const struct option *long_options;
97 int *opt_index;
98 {
99 return _getopt_internal(argc, argv, options, long_options, opt_index, 1);
100 }
103 #endif /* Not ELIDE_CODE. */
104 \f
105 #ifdef TEST
107 #include <stdio.h>
109 int main(
110 argc,
111 argv)
112 int argc;
113 char **argv;
114 {
115 int c;
116 int digit_optind = 0;
117 struct option long_options[] = {
118 {"add", 1, 0, 0},
119 {"append", 0, 0, 0},
120 {"delete", 1, 0, 0},
121 {"verbose", 0, 0, 0},
122 {"create", 0, 0, 0},
123 {"file", 1, 0, 0},
124 {0, 0, 0, 0}
125 };
127 while (1) {
128 int this_option_optind = optind ? optind : 1;
129 int option_index = 0;
131 c = getopt_long(argc, argv, "abc:d:0123456789",
132 long_options, &option_index);
133 if (c == -1)
134 break;
136 switch (c) {
137 case 0:
138 printf("option %s", long_options[option_index].name);
139 if (optarg)
140 printf(" with arg %s", optarg);
141 printf("\n");
142 break;
144 case '0':
145 case '1':
146 case '2':
147 case '3':
148 case '4':
149 case '5':
150 case '6':
151 case '7':
152 case '8':
153 case '9':
154 if (digit_optind != 0 && digit_optind != this_option_optind)
155 printf("digits occur in two different argv-elements.\n");
156 digit_optind = this_option_optind;
157 printf("option %c\n", c);
158 break;
160 case 'a':
161 printf("option a\n");
162 break;
164 case 'b':
165 printf("option b\n");
166 break;
168 case 'c':
169 printf("option c with value `%s'\n", optarg);
170 break;
172 case 'd':
173 printf("option d with value `%s'\n", optarg);
174 break;
176 case '?':
177 break;
179 default:
180 printf("?? getopt returned character code 0%o ??\n", c);
181 }
182 }
184 if (optind < argc) {
185 printf("non-option ARGV-elements: ");
186 while (optind < argc)
187 printf("%s ", argv[optind++]);
188 printf("\n");
189 }
191 exit(0);
192 }
194 #endif /* TEST */