MpalHandle RMResUpdate::queryResource(uint32 dwRes) {
// If there isn't an update file, return NULL
if (!_hFile.isOpen())
return NULL;
uint32 i;
for (i = 0; i < _numUpd; ++i)
if (_infos[i]._dwRes == dwRes)
// Found the index
break;
if (i == _numUpd)
// Couldn't find a matching resource, so return NULL
return NULL;
const ResUpdInfo &info = _infos[i];
byte *cmpBuf = new byte[info._cmpSize];
uint32 dwRead;
// Move to the correct offset and read in the compressed data
_hFile.seek(info._offset);
dwRead = _hFile.read(cmpBuf, info._cmpSize);
if (info._cmpSize > dwRead) {
// Error occurred reading data, so return NULL
delete[] cmpBuf;
return NULL;
}
// Allocate space for the output resource
MpalHandle destBuf = globalAllocate(0, info._size);
byte *lpDestBuf = (byte *)globalLock(destBuf);
uint32 dwSize;
// Decompress the data
lzo1x_decompress(cmpBuf, info._cmpSize, lpDestBuf, &dwSize);
// Delete buffer for compressed data
delete [] cmpBuf;
// Return the resource
globalUnlock(destBuf);
return destBuf;
}
/**
* Destructor
*/
RMRes::~RMRes() {
if (_h != NULL) {
globalUnlock(_h);
globalFree(_h);
}
}
