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[emacs.git] / lib-src / getopt1.c
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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
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
24 #ifdef _LIBC
25 # include <getopt.h>
26 #else
27 # include "getopt.h"
28 #endif
30 #if !defined __STDC__ || !__STDC__
31 /* This is a separate conditional since some stdc systems
32 reject `defined (const)'. */
33 #ifndef const
34 #define const
35 #endif
36 #endif
38 #include <stdio.h>
40 /* Comment out all this code if we are using the GNU C Library, and are not
41 actually compiling the library itself. This code is part of the GNU C
42 Library, but also included in many other GNU distributions. Compiling
43 and linking in this code is a waste when using the GNU C library
44 (especially if it is a shared library). Rather than having every GNU
45 program understand `configure --with-gnu-libc' and omit the object files,
46 it is simpler to just do this in the source for each such file. */
48 #define GETOPT_INTERFACE_VERSION 2
49 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
50 #include <gnu-versions.h>
51 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
52 #define ELIDE_CODE
53 #endif
54 #endif
56 #ifndef ELIDE_CODE
59 /* This needs to come after some library #include
60 to get __GNU_LIBRARY__ defined. */
61 #ifdef __GNU_LIBRARY__
62 #include <stdlib.h>
63 #endif
65 #ifndef NULL
66 #define NULL 0
67 #endif
69 int
70 getopt_long (argc, argv, options, long_options, opt_index)
71 int argc;
72 char *const *argv;
73 const char *options;
74 const struct option *long_options;
75 int *opt_index;
77 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
80 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
81 If an option that starts with '-' (not '--') doesn't match a long option,
82 but does match a short option, it is parsed as a short option
83 instead. */
85 int
86 getopt_long_only (argc, argv, options, long_options, opt_index)
87 int argc;
88 char *const *argv;
89 const char *options;
90 const struct option *long_options;
91 int *opt_index;
93 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
96 # ifdef _LIBC
97 libc_hidden_def (getopt_long)
98 libc_hidden_def (getopt_long_only)
99 # endif
101 #endif /* Not ELIDE_CODE. */
103 #ifdef TEST
105 #include <stdio.h>
108 main (argc, argv)
109 int argc;
110 char **argv;
112 int c;
113 int digit_optind = 0;
115 while (1)
117 int this_option_optind = optind ? optind : 1;
118 int option_index = 0;
119 static struct option long_options[] =
121 {"add", 1, 0, 0},
122 {"append", 0, 0, 0},
123 {"delete", 1, 0, 0},
124 {"verbose", 0, 0, 0},
125 {"create", 0, 0, 0},
126 {"file", 1, 0, 0},
127 {0, 0, 0, 0}
130 c = getopt_long (argc, argv, "abc:d:0123456789",
131 long_options, &option_index);
132 if (c == -1)
133 break;
135 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);
184 if (optind < argc)
186 printf ("non-option ARGV-elements: ");
187 while (optind < argc)
188 printf ("%s ", argv[optind++]);
189 printf ("\n");
192 exit (0);
195 #endif /* TEST */