1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987-2018 Free Software Foundation, Inc.
4 NOTE: This source is derived from an old version taken from the GNU C
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
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.
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
26 #if !defined __STDC__ || !__STDC__
27 /* This is a separate conditional since some stdc systems
28 reject `defined (const)'. */
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
57 /* This needs to come after some library #include
58 to get __GNU_LIBRARY__ defined. */
59 #ifdef __GNU_LIBRARY__
68 getopt_long (int argc
, char *const *argv
, const char *options
,
69 const struct option
*long_options
, int *opt_index
)
71 return _getopt_internal (argc
, argv
, options
, long_options
, opt_index
, 0);
74 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
75 If an option that starts with '-' (not '--') doesn't match a long option,
76 but does match a short option, it is parsed as a short option
80 getopt_long_only (int argc
, char *const *argv
, const char *options
,
81 const struct option
*long_options
, int *opt_index
)
83 return _getopt_internal (argc
, argv
, options
, long_options
, opt_index
, 1);
87 #endif /* Not ELIDE_CODE. */
94 main (int argc
, char **argv
)
101 int this_option_optind
= optind
? optind
: 1;
102 int option_index
= 0;
103 static struct option long_options
[] =
108 {"verbose", 0, 0, 0},
114 c
= getopt_long (argc
, argv
, "abc:d:0123456789",
115 long_options
, &option_index
);
122 printf ("option %s", long_options
[option_index
].name
);
124 printf (" with arg %s", optarg
);
138 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
139 printf ("digits occur in two different argv-elements.\n");
140 digit_optind
= this_option_optind
;
141 printf ("option %c\n", c
);
145 printf ("option a\n");
149 printf ("option b\n");
153 printf ("option c with value `%s'\n", optarg
);
157 printf ("option d with value `%s'\n", optarg
);
164 printf ("?? getopt returned character code 0%o ??\n", c
);
170 printf ("non-option ARGV-elements: ");
171 while (optind
< argc
)
172 printf ("%s ", argv
[optind
++]);
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