/[public]/getopt/trunk/gnu/getopt1.c
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Contents of /getopt/trunk/gnu/getopt1.c

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Revision 259 - (show annotations)
Mon Nov 7 22:09:10 2005 UTC (14 years, 11 months ago) by frodo
File MIME type: text/plain
File size: 4548 byte(s)
Imported sources

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 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
9
10 The GNU C Library 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 GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include "getopt.h"
25
26 #if !defined (__STDC__) || !__STDC__
27 /* This is a separate conditional since some stdc systems
28 reject `defined (const)'. */
29 #ifndef const
30 #define const
31 #endif
32 #endif
33
34 #include <stdio.h>
35
36 /* Comment out all this code if we are using the GNU C Library, and are not
37 actually compiling the library itself. This code is part of the GNU C
38 Library, but also included in many other GNU distributions. Compiling
39 and linking in this code is a waste when using the GNU C library
40 (especially if it is a shared library). Rather than having every GNU
41 program understand `configure --with-gnu-libc' and omit the object files,
42 it is simpler to just do this in the source for each such file. */
43
44 #define GETOPT_INTERFACE_VERSION 2
45 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
46 #include <gnu-versions.h>
47 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
48 #define ELIDE_CODE
49 #endif
50 #endif
51
52 #ifndef ELIDE_CODE
53
54
55 /* This needs to come after some library #include
56 to get __GNU_LIBRARY__ defined. */
57 #ifdef __GNU_LIBRARY__
58 #include <stdlib.h>
59 #endif
60
61 #ifndef NULL
62 #define NULL 0
63 #endif
64
65 int
66 getopt_long (argc, argv, options, long_options, opt_index)
67 int argc;
68 char *const *argv;
69 const char *options;
70 const struct option *long_options;
71 int *opt_index;
72 {
73 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
74 }
75
76 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
77 If an option that starts with '-' (not '--') doesn't match a long option,
78 but does match a short option, it is parsed as a short option
79 instead. */
80
81 int
82 getopt_long_only (argc, argv, options, long_options, opt_index)
83 int argc;
84 char *const *argv;
85 const char *options;
86 const struct option *long_options;
87 int *opt_index;
88 {
89 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
90 }
91
92
93 #endif /* Not ELIDE_CODE. */
94
95 #ifdef TEST
96
97 #include <stdio.h>
98
99 int
100 main (argc, argv)
101 int argc;
102 char **argv;
103 {
104 int c;
105 int digit_optind = 0;
106
107 while (1)
108 {
109 int this_option_optind = optind ? optind : 1;
110 int option_index = 0;
111 static struct option long_options[] =
112 {
113 {"add", 1, 0, 0},
114 {"append", 0, 0, 0},
115 {"delete", 1, 0, 0},
116 {"verbose", 0, 0, 0},
117 {"create", 0, 0, 0},
118 {"file", 1, 0, 0},
119 {0, 0, 0, 0}
120 };
121
122 c = getopt_long (argc, argv, "abc:d:0123456789",
123 long_options, &option_index);
124 if (c == -1)
125 break;
126
127 switch (c)
128 {
129 case 0:
130 printf ("option %s", long_options[option_index].name);
131 if (optarg)
132 printf (" with arg %s", optarg);
133 printf ("\n");
134 break;
135
136 case '0':
137 case '1':
138 case '2':
139 case '3':
140 case '4':
141 case '5':
142 case '6':
143 case '7':
144 case '8':
145 case '9':
146 if (digit_optind != 0 && digit_optind != this_option_optind)
147 printf ("digits occur in two different argv-elements.\n");
148 digit_optind = this_option_optind;
149 printf ("option %c\n", c);
150 break;
151
152 case 'a':
153 printf ("option a\n");
154 break;
155
156 case 'b':
157 printf ("option b\n");
158 break;
159
160 case 'c':
161 printf ("option c with value `%s'\n", optarg);
162 break;
163
164 case 'd':
165 printf ("option d with value `%s'\n", optarg);
166 break;
167
168 case '?':
169 break;
170
171 default:
172 printf ("?? getopt returned character code 0%o ??\n", c);
173 }
174 }
175
176 if (optind < argc)
177 {
178 printf ("non-option ARGV-elements: ");
179 while (optind < argc)
180 printf ("%s ", argv[optind++]);
181 printf ("\n");
182 }
183
184 exit (0);
185 }
186
187 #endif /* TEST */

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