1 ////////////////////////////////////////////////////////////////////////
2 //
3 // Copyright (C) 2016-2021 The Octave Project Developers
4 //
5 // See the file COPYRIGHT.md in the top-level directory of this
6 // distribution or <https://octave.org/copyright/>.
7 //
8 // This file is part of Octave.
9 //
10 // Octave is free software: you can redistribute it and/or modify it
11 // under the terms of the GNU General Public License as published by
12 // the Free Software Foundation, either version 3 of the License, or
13 // (at your option) any later version.
14 //
15 // Octave is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 // GNU General Public License for more details.
19 //
20 // You should have received a copy of the GNU General Public License
21 // along with Octave; see the file COPYING. If not, see
22 // <https://www.gnu.org/licenses/>.
23 //
24 ////////////////////////////////////////////////////////////////////////
25
26 // These functions may be provided by gnulib. We don't include gnulib
27 // headers directly in Octave's C++ source files to avoid problems that
28 // may be caused by the way that gnulib overrides standard library
29 // functions.
30
31 #if defined (HAVE_CONFIG_H)
32 # include "config.h"
33 #endif
34
35 #include <dirent.h>
36
37 #include "dirent-wrappers.h"
38
39 void *
octave_opendir_wrapper(const char * dname)40 octave_opendir_wrapper (const char *dname)
41 {
42 return opendir (dname);
43 }
44
45 char *
octave_readdir_wrapper(void * dir)46 octave_readdir_wrapper (void *dir)
47 {
48 struct dirent *d_ent = readdir ((DIR *) dir);
49
50 return d_ent ? d_ent->d_name : 0;
51 }
52
53 void
octave_rewinddir_wrapper(void * dir)54 octave_rewinddir_wrapper (void *dir)
55 {
56 rewinddir ((DIR *) dir);
57 }
58
59 int
octave_closedir_wrapper(void * dir)60 octave_closedir_wrapper (void *dir)
61 {
62 return closedir ((DIR *) dir);
63 }
64
65 // Define NAME_MAX, the maximum length of a single component in a
66 // filename. No such limit may exist, or may vary depending on the
67 // filesystem. This value should be avoided for creating character
68 // strings and used only to truncate given file names to this length if
69 // attempts to get info about the file fail with errno == ENAMETOOLONG.
70
71 // Most likely the system will truncate filenames if it is not POSIX,
72 // and so we can use the BSD value here.
73
74 #if ! defined (_POSIX_NAME_MAX)
75 # define _POSIX_NAME_MAX 255
76 #endif
77
78 #if ! defined (NAME_MAX)
79 # define NAME_MAX _POSIX_NAME_MAX
80 #endif
81
82 unsigned int
octave_name_max_wrapper(void)83 octave_name_max_wrapper (void)
84 {
85 return NAME_MAX;
86 }
87