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Share the utf8 to wchar conversion routine between lavf and lavu

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This doesn't add any dependency on library internals, since this
only is a static inline function that gets built into each of the
calling functions - this is only to reduce the code duplication.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2014-11-25 10:39:50 +02:00
parent 234fb81e31
commit 9326d64ed1
3 changed files with 49 additions and 27 deletions
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19
libavformat/os_support.h
View File

@ -127,24 +127,7 @@ int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
#elif defined(_WIN32)
#include <stdio.h>
#include <windows.h>
#include "libavutil/mem.h"
static inline int utf8towchar(const char *filename_utf8, wchar_t **filename_w)
{
int num_chars;
num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0);
if (num_chars <= 0) {
*filename_w = NULL;
return 0;
}
*filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
if (!*filename_w) {
errno = ENOMEM;
return -1;
}
MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, *filename_w, num_chars);
return 0;
}
#include "libavutil/wchar_filename.h"
#define DEF_FS_FUNCTION(name, wfunc, afunc) \
static inline int win32_##name(const char *filename_utf8) \

13
libavutil/file_open.c
View File

@ -37,23 +37,18 @@
#include <windows.h>
#include <share.h>
#include <errno.h>
#include "wchar_filename.h"
static int win32_open(const char *filename_utf8, int oflag, int pmode)
{
int fd;
int num_chars;
wchar_t *filename_w;
/* convert UTF-8 to wide chars */
num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0);
if (num_chars <= 0)
goto fallback;
filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
if (!filename_w) {
errno = ENOMEM;
if (utf8towchar(filename_utf8, &filename_w))
return -1;
}
MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars);
if (!filename_w)
goto fallback;
fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode);
av_freep(&filename_w);

44
libavutil/wchar_filename.h Normal file
View File

@ -0,0 +1,44 @@
/*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_WCHAR_FILENAME_H
#define AVUTIL_WCHAR_FILENAME_H
#if defined(_WIN32) && !defined(__MINGW32CE__)
#include <windows.h>
#include "mem.h"
static inline int utf8towchar(const char *filename_utf8, wchar_t **filename_w)
{
int num_chars;
num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0);
if (num_chars <= 0) {
*filename_w = NULL;
return 0;
}
*filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
if (!*filename_w) {
errno = ENOMEM;
return -1;
}
MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, *filename_w, num_chars);
return 0;
}
#endif
#endif /* AVUTIL_WCHAR_FILENAME_H */