1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
3 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program 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
13 GNU General Public License for more details. */
18 /* This is a separate conditional since some stdc systems
19 reject `defined (const)'. */
27 /* Comment out all this code if we are using the GNU C Library, and are not
28 actually compiling the library itself. This code is part of the GNU C
29 Library, but also included in many other GNU distributions. Compiling
30 and linking in this code is a waste when using the GNU C library
31 (especially if it is a shared library). Rather than having every GNU
32 program understand `configure --with-gnu-libc' and omit the object files,
33 it is simpler to just do this in the source for each such file. */
35 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
37 /* This needs to come after some library #include
38 to get __GNU_LIBRARY__ defined. */
39 #ifdef __GNU_LIBRARY__
49 int getopt_long(argc
, argv
, options
, long_options
, opt_index
)
53 const struct option
*long_options
;
56 return _getopt_internal(argc
, argv
, options
, long_options
, opt_index
, 0);
59 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
60 If an option that starts with '-' (not '--') doesn't match a long option,
61 but does match a short option, it is parsed as a short option
64 int getopt_long_only(argc
, argv
, options
, long_options
, opt_index
)
68 const struct option
*long_options
;
71 return _getopt_internal(argc
, argv
, options
, long_options
, opt_index
, 1);
74 #endif /* _LIBC or not __GNU_LIBRARY__. */
88 int this_option_optind
= optind
? optind
: 1;
90 static struct option long_options
[] = {
100 c
= getopt_long(argc
, argv
, "abc:d:0123456789", long_options
, &option_index
);
106 printf("option %s", long_options
[option_index
].name
);
108 printf(" with arg %s", optarg
);
122 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
123 printf("digits occur in two different argv-elements.\n");
124 digit_optind
= this_option_optind
;
125 printf("option %c\n", c
);
129 printf("option a\n");
133 printf("option b\n");
137 printf("option c with value `%s'\n", optarg
);
141 printf("option d with value `%s'\n", optarg
);
148 printf("?? getopt returned character code 0%o ??\n", c
);
153 printf("non-option ARGV-elements: ");
154 while (optind
< argc
)
155 printf("%s ", argv
[optind
++]);