77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
// NsisDecode.h
|
|
|
|
#ifndef __NSIS_DECODE_H
|
|
#define __NSIS_DECODE_H
|
|
|
|
#include "../../../Common/MyBuffer.h"
|
|
|
|
#include "../../Common/FilterCoder.h"
|
|
#include "../../Common/StreamUtils.h"
|
|
|
|
#include "../../Compress/LzmaDecoder.h"
|
|
|
|
namespace NArchive {
|
|
namespace NNsis {
|
|
|
|
namespace NMethodType
|
|
{
|
|
enum EEnum
|
|
{
|
|
kCopy,
|
|
kDeflate,
|
|
kBZip2,
|
|
kLZMA
|
|
};
|
|
}
|
|
|
|
/* 7-Zip installers 4.38 - 9.08 used modified version of NSIS that
|
|
supported BCJ filter for better compression ratio.
|
|
We support such modified NSIS archives. */
|
|
|
|
class CDecoder
|
|
{
|
|
NMethodType::EEnum _curMethod; // method of created decoder
|
|
|
|
CFilterCoder *_filter;
|
|
CMyComPtr<ISequentialInStream> _filterInStream;
|
|
CMyComPtr<ISequentialInStream> _codecInStream;
|
|
CMyComPtr<ISequentialInStream> _decoderInStream;
|
|
|
|
NCompress::NLzma::CDecoder *_lzmaDecoder;
|
|
|
|
public:
|
|
CMyComPtr<IInStream> InputStream; // for non-solid
|
|
UInt64 StreamPos; // the pos in unpacked for solid, the pos in Packed for non-solid
|
|
|
|
NMethodType::EEnum Method;
|
|
bool FilterFlag;
|
|
bool Solid;
|
|
|
|
CByteBuffer Buffer; // temp buf.
|
|
|
|
void Release()
|
|
{
|
|
_filterInStream.Release();
|
|
_codecInStream.Release();
|
|
_decoderInStream.Release();
|
|
InputStream.Release();
|
|
_lzmaDecoder = NULL;
|
|
}
|
|
|
|
HRESULT Init(ISequentialInStream *inStream, bool &useFilter);
|
|
HRESULT Read(void *data, size_t *processedSize)
|
|
{
|
|
return ReadStream(_decoderInStream, data, processedSize);;
|
|
}
|
|
|
|
|
|
HRESULT SetToPos(UInt64 pos, ICompressProgressInfo *progress); // for solid
|
|
HRESULT Decode(CByteBuffer *outBuf, bool unpackSizeDefined, UInt32 unpackSize,
|
|
ISequentialOutStream *realOutStream, ICompressProgressInfo *progress,
|
|
UInt32 &packSizeRes, UInt32 &unpackSizeRes);
|
|
};
|
|
|
|
}}
|
|
|
|
#endif
|