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;
}
HRESULT UpdateVolume(
IInStream *inStream,
const CArchiveDatabaseEx *database,
CObjectVector<CUpdateItem> &updateItems,
ISequentialOutStream *seqOutStream,
IArchiveUpdateCallback *updateCallback,
const CUpdateOptions &options)
{
if (updateItems.Size() != 1)
return E_NOTIMPL;
CMyComPtr<IArchiveUpdateCallback2> volumeCallback;
RINOK(updateCallback->QueryInterface(IID_IArchiveUpdateCallback2, (void **)&volumeCallback));
if (!volumeCallback)
return E_NOTIMPL;
CMyComPtr<ISequentialInStream> fileStream;
HRESULT result = updateCallback->GetStream(0, &fileStream);
if (result != S_OK && result != S_FALSE)
return result;
if (result == S_FALSE)
return E_FAIL;
CFileItem file;
const CUpdateItem &updateItem = updateItems[0];
if (updateItem.NewProperties)
FromUpdateItemToFileItem(updateItem, file);
else
file = database->Files[updateItem.IndexInArchive];
if (file.IsAnti || file.IsDirectory)
return E_FAIL;
UInt64 complexity = 0;
file.IsStartPosDefined = true;
file.StartPos = 0;
for (UInt64 volumeIndex = 0; true; volumeIndex++)
{
UInt64 volSize;
RINOK(volumeCallback->GetVolumeSize(volumeIndex, &volSize));
UInt64 pureSize = COutArchive::GetVolPureSize(volSize, file.Name.Length(), true);
CMyComPtr<ISequentialOutStream> volumeStream;
RINOK(volumeCallback->GetVolumeStream(volumeIndex, &volumeStream));
COutArchive archive;
RINOK(archive.Create(volumeStream, true));
RINOK(archive.SkeepPrefixArchiveHeader());
CSequentialInStreamWithCRC *inCrcStreamSpec = new CSequentialInStreamWithCRC;
CMyComPtr<ISequentialInStream> inCrcStream = inCrcStreamSpec;
inCrcStreamSpec->Init(fileStream);
RINOK(WriteRange(inCrcStream, volumeStream, pureSize, updateCallback, complexity));
file.UnPackSize = inCrcStreamSpec->GetSize();
if (file.UnPackSize == 0)
break;
file.FileCRC = inCrcStreamSpec->GetCRC();
RINOK(WriteVolumeHeader(archive, file, options));
file.StartPos += file.UnPackSize;
if (file.UnPackSize < pureSize)
break;
}
return S_OK;
}