Ejemplo n.º 1
0
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;
}
Ejemplo n.º 2
0
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;
}