static HRESULT GetStreamCRC(ISequentialInStream *inStream, UInt32 &resultCRC)
{
CCRC crc;
crc.Init();
const UInt32 kBufferSize = (1 << 14);
Byte buffer[kBufferSize];
for (;;)
{
UInt32 realProcessedSize;
RINOK(inStream->Read(buffer, kBufferSize, &realProcessedSize));
if(realProcessedSize == 0)
{
resultCRC = crc.GetDigest();
return S_OK;
}
crc.Update(buffer, realProcessedSize);
}
}
STDMETHODIMP COutVolumeStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
{
if(processedSize != NULL)
*processedSize = 0;
while(size > 0)
{
if (!_volumeStream)
{
RINOK(VolumeCallback->GetVolumeSize(_volIndex, &_volSize));
RINOK(VolumeCallback->GetVolumeStream(_volIndex, &_volumeStream));
_volIndex++;
_curPos = 0;
RINOK(_archive.Create(_volumeStream, true));
RINOK(_archive.SkeepPrefixArchiveHeader());
_crc.Init();
continue;
}
UInt64 pureSize = COutArchive::GetVolPureSize(_volSize, _file.Name.Length());
UInt32 curSize = (UInt32)MyMin(UInt64(size), pureSize - _curPos);
_crc.Update(data, curSize);
UInt32 realProcessed;
RINOK(_volumeStream->Write(data, curSize, &realProcessed))
data = (void *)((Byte *)data + realProcessed);
size -= realProcessed;
if(processedSize != NULL)
*processedSize += realProcessed;
_curPos += realProcessed;
if (realProcessed != curSize && realProcessed == 0)
return E_FAIL;
if (_curPos == pureSize)
{
RINOK(Flush());
}
}
return S_OK;
}