/**************************************************************************
* IStream_fnCopyTo
*/
static HRESULT WINAPI IStream_fnCopyTo(IStream *iface, IStream* pstm, ULARGE_INTEGER cb,
ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten)
{
ISHFileStream *This = impl_from_IStream(iface);
char copyBuff[1024];
ULONGLONG ulSize;
HRESULT hRet = S_OK;
TRACE("(%p,%p,%d,%p,%p)\n", This, pstm, cb.u.LowPart, pcbRead, pcbWritten);
if (pcbRead)
pcbRead->QuadPart = 0;
if (pcbWritten)
pcbWritten->QuadPart = 0;
if (!pstm)
return S_OK;
IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
/* Copy data */
ulSize = cb.QuadPart;
while (ulSize)
{
ULONG ulLeft, ulAmt;
ulLeft = ulSize > sizeof(copyBuff) ? sizeof(copyBuff) : ulSize;
/* Read */
hRet = IStream_fnRead(iface, copyBuff, ulLeft, &ulAmt);
if (pcbRead)
pcbRead->QuadPart += ulAmt;
if (FAILED(hRet) || ulAmt != ulLeft)
break;
/* Write */
hRet = IStream_fnWrite(pstm, copyBuff, ulLeft, &ulAmt);
if (pcbWritten)
pcbWritten->QuadPart += ulAmt;
if (FAILED(hRet) || ulAmt != ulLeft)
break;
ulSize -= ulLeft;
}
return hRet;
}
/**************************************************************************
* IStream_fnRelease
*/
static ULONG WINAPI IStream_fnRelease(IStream *iface)
{
ISHFileStream *This = impl_from_IStream(iface);
ULONG refCount = InterlockedDecrement(&This->ref);
TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
if (!refCount)
{
IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
LocalFree(This->lpszPath);
CloseHandle(This->hFile);
HeapFree(GetProcessHeap(), 0, This);
}
return refCount;
}
/**************************************************************************
* IStream_fnSeek
*/
static HRESULT WINAPI IStream_fnSeek(IStream *iface, LARGE_INTEGER dlibMove,
DWORD dwOrigin, ULARGE_INTEGER* pNewPos)
{
ISHFileStream *This = impl_from_IStream(iface);
DWORD dwPos;
TRACE("(%p,%d,%d,%p)\n", This, dlibMove.u.LowPart, dwOrigin, pNewPos);
IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
dwPos = SetFilePointer(This->hFile, dlibMove.u.LowPart, NULL, dwOrigin);
if( dwPos == INVALID_SET_FILE_POINTER )
return HRESULT_FROM_WIN32(GetLastError());
if (pNewPos)
{
pNewPos->u.HighPart = 0;
pNewPos->u.LowPart = dwPos;
}
return S_OK;
}