bool LZMADecodeFile ( const char *fromFile, const char *toFile, CProgressInfo7Zip *progress )
{
CMyComPtr<ISequentialInStream> inStream;
CInFileStream *inStreamSpec = new CInFileStream;
inStream = inStreamSpec;
if ( !inStreamSpec->Open ( GetSystemString(fromFile) ) )
return false;
CMyComPtr<ISequentialOutStream> outStream;
COutFileStream *outStreamSpec = new COutFileStream;
outStream = outStreamSpec;
if ( !outStreamSpec->Create ( GetSystemString(toFile), true ) )
return false;
NCompress::NLZMA::CDecoder *decoderSpec = new NCompress::NLZMA::CDecoder;
CMyComPtr<ICompressCoder> decoder = decoderSpec;
const UInt32 kPropertiesSize = 5;
Byte properties[kPropertiesSize];
UInt32 processedSize;
if ( ReadStream (inStream, properties, kPropertiesSize, &processedSize) != S_OK )
return false;
if ( processedSize != kPropertiesSize )
return false;
if ( decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK )
return false;
UInt64 fileSize = 0;
for (int i = 0; i < 8; i++)
{
Byte b;
if ( inStream->Read(&b, 1, &processedSize) != S_OK )
return false;
if ( processedSize != 1 )
return false;
fileSize |= ((UInt64)b) << (8 * i);
}
if ( progress )
{
progress->Init();
progress->ApprovedStart = 1 << 21;
progress->SetMax ( fileSize );
}
if ( decoder->Code(inStream, outStream, 0, &fileSize, progress) != S_OK )
// decoder error
return false;
return true;
}
unsigned char *LZMADecodeData ( unsigned char *fromData, long fromSize, long &toSize, CProgressInfo7Zip *progress )
{
CMyComPtr<ISequentialInStream> inStream;
CInDataStream *inStreamSpec = new CInDataStream;
inStream = inStreamSpec;
inStreamSpec->LoadData ( fromData, fromSize );
NCompress::NLZMA::CDecoder *decoderSpec = new NCompress::NLZMA::CDecoder;
CMyComPtr<ICompressCoder> decoder = decoderSpec;
const UInt32 kPropertiesSize = 5;
Byte properties[kPropertiesSize];
UInt32 processedSize;
if ( ReadStream (inStream, properties, kPropertiesSize, &processedSize) != S_OK )
return NULL;
if ( processedSize != kPropertiesSize )
return NULL;
if ( decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK )
return NULL;
UInt64 fileSize = 0;
for (int i = 0; i < 8; i++)
{
Byte b;
if ( inStream->Read(&b, 1, &processedSize) != S_OK )
return NULL;
if ( processedSize != 1 )
return NULL;
fileSize |= ((UInt64)b) << (8 * i);
}
CMyComPtr<ISequentialOutStream> outStream;
COutDataStream *outStreamSpec = new COutDataStream;
outStream = outStreamSpec;
outStreamSpec->Create ( fileSize );
// CProgressInfo *progressInfoSpec = new CProgressInfo;
// CMyComPtr<ICompressProgressInfo> progressInfo = progress;
if ( progress )
{
progress->Init();
progress->ApprovedStart = 1 << 21;
progress->SetMax ( fileSize );
}
if ( decoder->Code(inStream, outStream, 0, &fileSize, progress) != S_OK )
// decoder error
return NULL;
toSize = outStreamSpec->GetCurrentSize ();
return outStreamSpec->GetData ();
}
HRESULT CDecoder::Code(const CHeader &header, ISequentialOutStream *outStream,
ICompressProgressInfo *progress)
{
if (header.FilterID > 1)
return E_NOTIMPL;
RINOK(_lzmaDecoderSpec->SetDecoderProperties2(header.LzmaProps, 5));
bool filteredMode = (header.FilterID == 1);
if (filteredMode)
{
RINOK(_filterCoder->SetOutStream(outStream));
outStream = _bcjStream;
RINOK(_filterCoder->SetOutStreamSize(NULL));
}
const UInt64 *Size = header.HasSize() ? &header.Size : NULL;
HRESULT res = _lzmaDecoderSpec->CodeResume(outStream, Size, progress);
if (filteredMode)
{
{
HRESULT res2 = _filterCoder->OutStreamFinish();
if (res == S_OK)
res = res2;
}
HRESULT res2 = _filterCoder->ReleaseOutStream();
if (res == S_OK)
res = res2;
}
RINOK(res);
if (header.HasSize())
if (_lzmaDecoderSpec->GetOutputProcessedSize() != header.Size)
return S_FALSE;
return S_OK;
}