FFmpeg
fopen_utf8.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef FFTOOLS_FOPEN_UTF8_H
20 #define FFTOOLS_FOPEN_UTF8_H
21 
22 #include <stdio.h>
23 
24 /* The fopen_utf8 function here is essentially equivalent to avpriv_fopen_utf8,
25  * except that it doesn't set O_CLOEXEC, and that it isn't exported
26  * from a different library. (On Windows, each DLL might use a different
27  * CRT, and FILE* handles can't be shared across them.) */
28 
29 #ifdef _WIN32
30 #include "libavutil/mem.h"
32 
33 static inline FILE *fopen_utf8(const char *path_utf8, const char *mode)
34 {
35  wchar_t *path_w, *mode_w;
36  FILE *f;
37 
38  /* convert UTF-8 to wide chars */
39  if (get_extended_win32_path(path_utf8, &path_w)) /* This sets errno on error. */
40  return NULL;
41  if (!path_w)
42  goto fallback;
43 
44  if (utf8towchar(mode, &mode_w))
45  return NULL;
46  if (!mode_w) {
47  /* If failing to interpret the mode string as utf8, it is an invalid
48  * parameter. */
49  av_freep(&path_w);
50  errno = EINVAL;
51  return NULL;
52  }
53 
54  f = _wfopen(path_w, mode_w);
55  av_freep(&path_w);
56  av_freep(&mode_w);
57 
58  return f;
59 fallback:
60  /* path may be in CP_ACP */
61  return fopen(path_utf8, mode);
62 }
63 
64 #else
65 
66 static inline FILE *fopen_utf8(const char *path, const char *mode)
67 {
68  return fopen(path, mode);
69 }
70 #endif
71 
72 #endif /* FFTOOLS_FOPEN_UTF8_H */
fopen_utf8
static FILE * fopen_utf8(const char *path, const char *mode)
Definition: fopen_utf8.h:66
wchar_filename.h
mode
Definition: swscale.c:52
NULL
#define NULL
Definition: coverity.c:32
f
f
Definition: af_crystalizer.c:122
mem.h
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34