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
31 
32 static inline FILE *fopen_utf8(const char *path_utf8, const char *mode)
33 {
34  wchar_t *path_w, *mode_w;
35  FILE *f;
36 
37  /* convert UTF-8 to wide chars */
38  if (get_extended_win32_path(path_utf8, &path_w)) /* This sets errno on error. */
39  return NULL;
40  if (!path_w)
41  goto fallback;
42 
43  if (utf8towchar(mode, &mode_w))
44  return NULL;
45  if (!mode_w) {
46  /* If failing to interpret the mode string as utf8, it is an invalid
47  * parameter. */
48  av_freep(&path_w);
49  errno = EINVAL;
50  return NULL;
51  }
52 
53  f = _wfopen(path_w, mode_w);
54  av_freep(&path_w);
55  av_freep(&mode_w);
56 
57  return f;
58 fallback:
59  /* path may be in CP_ACP */
60  return fopen(path_utf8, mode);
61 }
62 
63 #else
64 
65 static inline FILE *fopen_utf8(const char *path, const char *mode)
66 {
67  return fopen(path, mode);
68 }
69 #endif
70 
71 #endif /* FFTOOLS_FOPEN_UTF8_H */
fopen_utf8
static FILE * fopen_utf8(const char *path, const char *mode)
Definition: fopen_utf8.h:65
wchar_filename.h
NULL
#define NULL
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f
f
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mode
mode
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av_freep
#define av_freep(p)
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