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my_getopt_long.h
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1/*********************************************************************/
2// dar - disk archive - a backup/restoration program
3// Copyright (C) 2002-2026 Denis Corbin
4//
5// This program is free software; you can redistribute it and/or
6// modify it under the terms of the GNU General Public License
7// as published by the Free Software Foundation; either version 2
8// of the License, or (at your option) any later version.
9//
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.
14//
15// You should have received a copy of the GNU General Public License
16// along with this program; if not, write to the Free Software
17// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18//
19// to contact the author, see the AUTHOR file
20/*********************************************************************/
21
25
26
27#ifndef MY_GETOPT_LONG_H
28#define MY_GETOPT_LONG_H
29
30// getopt may be declated in <unistd.h> on systems like FreeBSD.
31// if you want to use libgnugetopt you need to include <getopt.h>
32// on this system. Thus a conflict appear because the getopt is
33// declared twice. To avoid you either have not to include <unistd.h>
34// or not to include <getopt.h>. But neither the first nor the
35// second is acceptable, because we need other stuf declared in
36// <unistd.h> (open() & so on) and stuf declared in <getopt.h>
37// (like getopt_long which is gnu typical).
38//
39// to solve this problem, I have extracted the gnu getopt_long
40// as declared under Linux in the present file. When getopt is
41// declared in <unistd.h> it is still possible to include the
42// current file in place of <getopt.h>, to get getopt_long available
43//
44// at linking time, if libgnugetopt is available we use it
45//
46// see getopt_decision.hpp
47
48# define no_argument 0
49# define required_argument 1
50# define optional_argument 2
51
52struct option
53{
54# if defined __STDC__ && __STDC__
55 const char *name;
56# else
57 char *name;
58# endif
59 /* has_arg can't be an enum because some compilers complain about
60 type mismatches in all the code that assumes it is an int. */
61 int has_arg;
62 int *flag;
63 int val;
64};
65
66extern int getopt_long (int __argc, char *const *__argv, const char *__shortopts,
67 const struct option *__longopts, int *__longind);
68
69
70#endif