mirror of https://code.videolan.org/videolan/vlc
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*****************************************************************************
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* realpath.c: POSIX realpath replacement
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*****************************************************************************
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* Copyright © 2016 VLC authors and VideoLAN
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdlib.h>
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#include <errno.h>
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#ifdef _WIN32
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#include <windows.h>
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#endif
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char *realpath(const char * restrict relpath, char * restrict resolved_path)
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{
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if (relpath == NULL)
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{
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errno = EINVAL;
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return NULL;
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}
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#ifdef _WIN32
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int len = MultiByteToWideChar( CP_UTF8, 0, relpath, -1, NULL, 0 );
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if (len == 0)
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return NULL;
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wchar_t *wrelpath = malloc(len * sizeof (wchar_t));
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if (wrelpath == NULL)
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return NULL;
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MultiByteToWideChar( CP_UTF8, 0, relpath, -1, wrelpath, len );
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wchar_t *wfullpath = _wfullpath( NULL, wrelpath, _MAX_PATH );
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free(wrelpath);
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if (wfullpath != NULL)
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{
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len = WideCharToMultiByte( CP_UTF8, 0, wfullpath, -1, NULL, 0, NULL, NULL );
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if (len != 0)
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{
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if (resolved_path != NULL)
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len = len >= _MAX_PATH ? _MAX_PATH : len;
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else
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resolved_path = (char *)malloc(len);
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if (resolved_path != NULL)
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WideCharToMultiByte( CP_UTF8, 0, wfullpath, -1, resolved_path, len, NULL, NULL );
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free(wfullpath);
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return resolved_path;
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}
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free(wfullpath);
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}
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#else
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(void)resolved_path;
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#endif
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errno = EACCES;
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return NULL;
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}
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