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comparison lib-src/getopt1.c @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children 84b14dcb0985
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427:0a0253eac470 428:3ecd8885ac67
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.
3
4 NOTE: The canonical source of this file is maintained with the GNU C Library.
5 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
6
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
10 later version.
11
12 This program 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
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
20 USA. */
21
22 #ifdef HAVE_CONFIG_H
23 #include <../src/config.h>
24 #endif
25
26 #include "getopt.h"
27
28 #include <stdio.h>
29
30 /* Comment out all this code if we are using the GNU C Library, and are not
31 actually compiling the library itself. This code is part of the GNU C
32 Library, but also included in many other GNU distributions. Compiling
33 and linking in this code is a waste when using the GNU C library
34 (especially if it is a shared library). Rather than having every GNU
35 program understand `configure --with-gnu-libc' and omit the object files,
36 it is simpler to just do this in the source for each such file. */
37
38 #define GETOPT_INTERFACE_VERSION 2
39 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
40 #include <gnu-versions.h>
41 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
42 #define ELIDE_CODE
43 #endif
44 #endif
45
46 #ifndef ELIDE_CODE
47
48
49 /* This needs to come after some library #include
50 to get __GNU_LIBRARY__ defined. */
51 #ifdef __GNU_LIBRARY__
52 #include <stdlib.h>
53 #endif
54
55 #ifndef NULL
56 #define NULL 0
57 #endif
58
59 int
60 getopt_long (int argc, char *const *argv, const char *options,
61 const struct option *long_options, int *opt_index)
62 {
63 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
64 }
65
66 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
67 If an option that starts with '-' (not '--') doesn't match a long option,
68 but does match a short option, it is parsed as a short option
69 instead. */
70
71 int
72 getopt_long_only (int argc, char *const *argv, const char *options,
73 const struct option *long_options, int *opt_index)
74 {
75 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
76 }
77
78
79 #endif /* Not ELIDE_CODE. */
80
81 #ifdef TEST
82
83 #include <stdio.h>
84
85 int
86 main (int argc, char **argv)
87 {
88 int c;
89 int digit_optind = 0;
90
91 while (1)
92 {
93 int this_option_optind = optind ? optind : 1;
94 int option_index = 0;
95 static struct option long_options[] =
96 {
97 {"add", 1, 0, 0},
98 {"append", 0, 0, 0},
99 {"delete", 1, 0, 0},
100 {"verbose", 0, 0, 0},
101 {"create", 0, 0, 0},
102 {"file", 1, 0, 0},
103 {0, 0, 0, 0}
104 };
105
106 c = getopt_long (argc, argv, "abc:d:0123456789",
107 long_options, &option_index);
108 if (c == -1)
109 break;
110
111 switch (c)
112 {
113 case 0:
114 printf ("option %s", long_options[option_index].name);
115 if (optarg)
116 printf (" with arg %s", optarg);
117 printf ("\n");
118 break;
119
120 case '0':
121 case '1':
122 case '2':
123 case '3':
124 case '4':
125 case '5':
126 case '6':
127 case '7':
128 case '8':
129 case '9':
130 if (digit_optind != 0 && digit_optind != this_option_optind)
131 printf ("digits occur in two different argv-elements.\n");
132 digit_optind = this_option_optind;
133 printf ("option %c\n", c);
134 break;
135
136 case 'a':
137 printf ("option a\n");
138 break;
139
140 case 'b':
141 printf ("option b\n");
142 break;
143
144 case 'c':
145 printf ("option c with value `%s'\n", optarg);
146 break;
147
148 case 'd':
149 printf ("option d with value `%s'\n", optarg);
150 break;
151
152 case '?':
153 break;
154
155 default:
156 printf ("?? getopt returned character code 0%o ??\n", c);
157 }
158 }
159
160 if (optind < argc)
161 {
162 printf ("non-option ARGV-elements: ");
163 while (optind < argc)
164 printf ("%s ", argv[optind++]);
165 printf ("\n");
166 }
167
168 exit (0);
169 }
170
171 #endif /* TEST */