HRESULT DXUtil_GetDXSDKMediaPathCb( TCHAR* szDest, int cbDest )
{
return DXUtil_GetDXSDKMediaPathCch( szDest, cbDest / sizeof(TCHAR) );
}
//-----------------------------------------------------------------------------
// Name: DXUtil_FindMediaFileCch()
// Desc: Trys to find the location of a SDK media file
// cchDest is the size in TCHARs of strDestPath. Be careful not to
// pass in sizeof(strDest) on UNICODE builds.
//-----------------------------------------------------------------------------
HRESULT DXUtil_FindMediaFileCch( TCHAR* strDestPath, int cchDest, LPCTSTR strFilename )
{
bool bFound;
TCHAR strSearchFor[MAX_PATH];
if( NULL==strFilename || strFilename[0] == 0 || NULL==strDestPath || cchDest < 10 )
return E_INVALIDARG;
// Get the DirectX SDK's media dir if the SDK is installed
TCHAR strMediaDir[MAX_PATH] = {0};
DXUtil_GetDXSDKMediaPathCch( strMediaDir, MAX_PATH );
// Get the exe name, and exe path
TCHAR strExePath[MAX_PATH] = {0};
TCHAR strExeName[MAX_PATH] = {0};
TCHAR* strLastSlash = NULL;
GetModuleFileName( NULL, strExePath, MAX_PATH );
strExePath[MAX_PATH-1]=0;
strLastSlash = _tcsrchr( strExePath, TEXT('\\') );
if( strLastSlash )
{
lstrcpyn( strExeName, &strLastSlash[1], MAX_PATH );
// Chop the exe name from the exe path
*strLastSlash = 0;
// Chop the .exe from the exe name
strLastSlash = _tcsrchr( strExeName, TEXT('.') );
if( strLastSlash )
*strLastSlash = 0;
}
// Typical directories:
// .\
// ..\
// ..\..\
// %EXE_DIR%\
// %EXE_DIR%\..\
// %EXE_DIR%\..\..\
// %EXE_DIR%\..\%EXE_NAME%
// %EXE_DIR%\..\..\%EXE_NAME%
// DXSDK media path
// Typical directory search
bFound = DXUtil_FindMediaSearchTypicalDirs( strDestPath, cchDest, strFilename, strExePath, strExeName, strMediaDir );
if( bFound )
return S_OK;
// Typical directory search again, but also look in a subdir called "\media\"
_sntprintf( strSearchFor, MAX_PATH, TEXT("media\\%s"), strFilename ); strSearchFor[MAX_PATH-1] = 0;
bFound = DXUtil_FindMediaSearchTypicalDirs( strDestPath, cchDest, strSearchFor, strExePath, strExeName, strMediaDir );
if( bFound )
return S_OK;
TCHAR strLeafName[MAX_PATH] = {0};
// Search all parent directories starting at .\ and using strFilename as the leaf name
_tcsncpy( strLeafName, strFilename, MAX_PATH ); strLeafName[MAX_PATH-1] = 0;
bFound = DXUtil_FindMediaSearchParentDirs( strDestPath, cchDest, TEXT("."), strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at the exe's dir and using strFilename as the leaf name
bFound = DXUtil_FindMediaSearchParentDirs( strDestPath, cchDest, strExePath, strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at .\ and using "media\strFilename" as the leaf name
_sntprintf( strLeafName, MAX_PATH, TEXT("media\\%s"), strFilename ); strLeafName[MAX_PATH-1] = 0;
bFound = DXUtil_FindMediaSearchParentDirs( strDestPath, cchDest, TEXT("."), strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at the exe's dir and using "media\strFilename" as the leaf name
bFound = DXUtil_FindMediaSearchParentDirs( strDestPath, cchDest, strExePath, strLeafName );
if( bFound )
return S_OK;
// On failure, return the file as the path but also return an error code
_tcsncpy( strDestPath, strFilename, cchDest );
strDestPath[cchDest-1] = 0;
return E_FAIL;
}
//-----------------------------------------------------------------------------
// Name: DXUtil_FindMediaFileCch()
// Desc: Returns a valid path to a DXSDK media file
// cchDest is the size in TCHARs of strDestPath. Be careful not to
// pass in sizeof(strDest) on UNICODE builds.
//-----------------------------------------------------------------------------
HRESULT DXUtil_FindMediaFileCch( TCHAR* strDestPath, int cchDest, TCHAR* strFilename )
{
HRESULT hr;
HANDLE file;
TCHAR* strShortNameTmp = NULL;
TCHAR strShortName[MAX_PATH];
int cchPath;
if( NULL==strFilename || NULL==strDestPath || cchDest < 1 )
return E_INVALIDARG;
lstrcpy( strDestPath, TEXT("") );
lstrcpy( strShortName, TEXT("") );
// Build full path name from strFileName (strShortName will be just the leaf filename)
cchPath = GetFullPathName(strFilename, cchDest, strDestPath, &strShortNameTmp);
if ((cchPath == 0) || (cchDest <= cchPath))
return E_FAIL;
if( strShortNameTmp )
lstrcpyn( strShortName, strShortNameTmp, MAX_PATH );
// first try to find the filename given a full path
file = CreateFile( strDestPath, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, NULL );
if( INVALID_HANDLE_VALUE != file )
{
CloseHandle( file );
return S_OK;
}
// next try to find the filename in the current working directory (path stripped)
file = CreateFile( strShortName, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, NULL );
if( INVALID_HANDLE_VALUE != file )
{
_tcsncpy( strDestPath, strShortName, cchDest );
strDestPath[cchDest-1] = 0; // _tcsncpy doesn't NULL term if it runs out of space
CloseHandle( file );
return S_OK;
}
// last, check if the file exists in the media directory
if( FAILED( hr = DXUtil_GetDXSDKMediaPathCch( strDestPath, cchDest ) ) )
return hr;
if( lstrlen(strDestPath) + lstrlen(strShortName) < cchDest )
lstrcat( strDestPath, strShortName );
else
return E_INVALIDARG;
file = CreateFile( strDestPath, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, NULL );
if( INVALID_HANDLE_VALUE != file )
{
CloseHandle( file );
return S_OK;
}
// On failure, just return the file as the path
_tcsncpy( strDestPath, strFilename, cchDest );
strDestPath[cchDest-1] = 0; // _tcsncpy doesn't NULL term if it runs out of space
return HRESULT_FROM_WIN32( ERROR_FILE_NOT_FOUND );
}
