groff: update vendor branch to v1.20.1
[dragonfly.git] / contrib / groff / src / libs / libgroff / maxfilename.cpp
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92d0a6a6 1// -*- C++ -*-
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2/* Copyright (C) 1992, 2001, 2003, 2005, 2009
3 Free Software Foundation, Inc.
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4 Written by James Clark (jjc@jclark.com)
5
6This file is part of groff.
7
8groff is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
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10Software Foundation, either version 3 of the License, or
11(at your option) any later version.
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12
13groff is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16for more details.
17
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18You should have received a copy of the GNU General Public License
19along with this program. If not, see <http://www.gnu.org/licenses/>. */
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20
21/* file_name_max(dir) does the same as pathconf(dir, _PC_NAME_MAX) */
22
23#include "lib.h"
24
25#include <sys/types.h>
26
27#ifdef HAVE_UNISTD_H
28#include <unistd.h>
29#endif /* HAVE_UNISTD_H */
30
31#ifdef _POSIX_VERSION
32
33size_t file_name_max(const char *fname)
34{
35 return pathconf(fname, _PC_NAME_MAX);
36}
37
38#else /* not _POSIX_VERSION */
39
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40#ifdef HAVE_DIRENT_H
41#include <dirent.h>
42#else /* not HAVE_DIRENT_H */
43#ifdef HAVE_SYS_DIR_H
44#include <sys/dir.h>
45#endif /* HAVE_SYS_DIR_H */
46#endif /* not HAVE_DIRENT_H */
47
48#ifndef NAME_MAX
49#ifdef MAXNAMLEN
50#define NAME_MAX MAXNAMLEN
51#else /* !MAXNAMLEN */
52#ifdef MAXNAMELEN
53#define NAME_MAX MAXNAMELEN
54#else /* !MAXNAMELEN */
55#define NAME_MAX 14
56#endif /* !MAXNAMELEN */
57#endif /* !MAXNAMLEN */
58#endif /* !NAME_MAX */
59
60size_t file_name_max(const char *)
61{
62 return NAME_MAX;
63}
64
65#endif /* not _POSIX_VERSION */