mirror of
https://github.com/Xevion/easy7zip.git
synced 2025-12-08 18:07:15 -06:00
571 lines
15 KiB
C++
Executable File
571 lines
15 KiB
C++
Executable File
// Archive/WimIn.cpp
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#include "StdAfx.h"
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#include "../../../../C/CpuArch.h"
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#include "Common/IntToString.h"
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#include "../../Common/StreamUtils.h"
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#include "../../Common/StreamObjects.h"
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#include "../../Common/LimitedStreams.h"
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#include "../Common/OutStreamWithSha1.h"
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#include "WimIn.h"
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#define Get16(p) GetUi16(p)
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#define Get32(p) GetUi32(p)
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#define Get64(p) GetUi64(p)
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namespace NArchive{
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namespace NWim{
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static const int kChunkSizeBits = 15;
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static const UInt32 kChunkSize = (1 << kChunkSizeBits);
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namespace NXpress {
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class CDecoderFlusher
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{
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CDecoder *m_Decoder;
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public:
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bool NeedFlush;
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CDecoderFlusher(CDecoder *decoder): m_Decoder(decoder), NeedFlush(true) {}
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~CDecoderFlusher()
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{
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if (NeedFlush)
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m_Decoder->Flush();
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m_Decoder->ReleaseStreams();
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}
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};
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HRESULT CDecoder::CodeSpec(UInt32 outSize)
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{
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{
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Byte levels[kMainTableSize];
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for (int i = 0; i < kMainTableSize; i += 2)
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{
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Byte b = m_InBitStream.DirectReadByte();
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levels[i] = b & 0xF;
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levels[i + 1] = b >> 4;
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}
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if (!m_MainDecoder.SetCodeLengths(levels))
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return S_FALSE;
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}
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while (outSize > 0)
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{
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UInt32 number = m_MainDecoder.DecodeSymbol(&m_InBitStream);
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if (number < 256)
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{
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m_OutWindowStream.PutByte((Byte)number);
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outSize--;
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}
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else
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{
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if (number >= kMainTableSize)
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return S_FALSE;
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UInt32 posLenSlot = number - 256;
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UInt32 posSlot = posLenSlot / kNumLenSlots;
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UInt32 len = posLenSlot % kNumLenSlots;
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UInt32 distance = (1 << posSlot) - 1 + m_InBitStream.ReadBits(posSlot);
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if (len == kNumLenSlots - 1)
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{
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len = m_InBitStream.DirectReadByte();
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if (len == 0xFF)
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{
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len = m_InBitStream.DirectReadByte();
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len |= (UInt32)m_InBitStream.DirectReadByte() << 8;
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}
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else
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len += kNumLenSlots - 1;
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}
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len += kMatchMinLen;
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UInt32 locLen = (len <= outSize ? len : outSize);
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if (!m_OutWindowStream.CopyBlock(distance, locLen))
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return S_FALSE;
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len -= locLen;
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outSize -= locLen;
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if (len != 0)
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return S_FALSE;
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}
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}
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return S_OK;
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}
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const UInt32 kDictSize = (1 << kNumPosSlots);
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HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream, UInt32 outSize)
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{
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if (!m_OutWindowStream.Create(kDictSize) || !m_InBitStream.Create(1 << 16))
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return E_OUTOFMEMORY;
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CDecoderFlusher flusher(this);
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m_InBitStream.SetStream(inStream);
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m_OutWindowStream.SetStream(outStream);
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m_InBitStream.Init();
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m_OutWindowStream.Init(false);
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RINOK(CodeSpec(outSize));
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flusher.NeedFlush = false;
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return Flush();
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}
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HRESULT CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream, UInt32 outSize)
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{
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try { return CodeReal(inStream, outStream, outSize); }
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catch(const CInBufferException &e) { return e.ErrorCode; } \
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catch(const CLzOutWindowException &e) { return e.ErrorCode; }
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catch(...) { return S_FALSE; }
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}
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}
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static void GetFileTimeFromMem(const Byte *p, FILETIME *ft)
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{
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ft->dwLowDateTime = Get32(p);
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ft->dwHighDateTime = Get32(p + 4);
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}
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HRESULT CUnpacker::Unpack(IInStream *inStream, const CResource &resource, bool lzxMode,
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ISequentialOutStream *outStream, ICompressProgressInfo *progress)
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{
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RINOK(inStream->Seek(resource.Offset, STREAM_SEEK_SET, NULL));
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CLimitedSequentialInStream *limitedStreamSpec = new CLimitedSequentialInStream();
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CMyComPtr<ISequentialInStream> limitedStream = limitedStreamSpec;
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limitedStreamSpec->SetStream(inStream);
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if (!copyCoder)
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{
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copyCoderSpec = new NCompress::CCopyCoder;
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copyCoder = copyCoderSpec;
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}
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if (!resource.IsCompressed())
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{
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if (resource.PackSize != resource.UnpackSize)
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return S_FALSE;
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limitedStreamSpec->Init(resource.PackSize);
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return copyCoder->Code(limitedStreamSpec, outStream, NULL, NULL, progress);
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}
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if (resource.UnpackSize == 0)
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return S_OK;
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UInt64 numChunks = (resource.UnpackSize + kChunkSize - 1) >> kChunkSizeBits;
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unsigned entrySize = ((resource.UnpackSize > (UInt64)1 << 32) ? 8 : 4);
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UInt64 sizesBufSize64 = entrySize * (numChunks - 1);
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size_t sizesBufSize = (size_t)sizesBufSize64;
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if (sizesBufSize != sizesBufSize64)
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return E_OUTOFMEMORY;
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if (sizesBufSize > sizesBuf.GetCapacity())
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{
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sizesBuf.Free();
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sizesBuf.SetCapacity(sizesBufSize);
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}
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RINOK(ReadStream_FALSE(inStream, (Byte *)sizesBuf, sizesBufSize));
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const Byte *p = (const Byte *)sizesBuf;
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if (lzxMode && !lzxDecoder)
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{
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lzxDecoderSpec = new NCompress::NLzx::CDecoder(true);
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lzxDecoder = lzxDecoderSpec;
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RINOK(lzxDecoderSpec->SetParams(kChunkSizeBits));
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}
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UInt64 baseOffset = resource.Offset + sizesBufSize64;
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UInt64 outProcessed = 0;
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for (UInt32 i = 0; i < (UInt32)numChunks; i++)
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{
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UInt64 offset = 0;
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if (i > 0)
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{
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offset = (entrySize == 4) ? Get32(p): Get64(p);
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p += entrySize;
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}
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UInt64 nextOffset = resource.PackSize - sizesBufSize64;
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if (i + 1 < (UInt32)numChunks)
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nextOffset = (entrySize == 4) ? Get32(p): Get64(p);
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if (nextOffset < offset)
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return S_FALSE;
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RINOK(inStream->Seek(baseOffset + offset, STREAM_SEEK_SET, NULL));
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UInt64 inSize = nextOffset - offset;
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limitedStreamSpec->Init(inSize);
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if (progress)
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{
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RINOK(progress->SetRatioInfo(&offset, &outProcessed));
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}
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UInt32 outSize = kChunkSize;
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if (outProcessed + outSize > resource.UnpackSize)
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outSize = (UInt32)(resource.UnpackSize - outProcessed);
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UInt64 outSize64 = outSize;
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if (inSize == outSize)
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{
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RINOK(copyCoder->Code(limitedStreamSpec, outStream, NULL, &outSize64, NULL));
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}
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else
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{
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if (lzxMode)
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{
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lzxDecoderSpec->SetKeepHistory(false);
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RINOK(lzxDecoder->Code(limitedStreamSpec, outStream, NULL, &outSize64, NULL));
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}
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else
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{
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RINOK(xpressDecoder.Code(limitedStreamSpec, outStream, outSize));
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}
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}
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outProcessed += outSize;
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}
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return S_OK;
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}
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HRESULT CUnpacker::Unpack(IInStream *inStream, const CResource &resource, bool lzxMode,
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ISequentialOutStream *outStream, ICompressProgressInfo *progress, Byte *digest)
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{
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COutStreamWithSha1 *shaStreamSpec = new COutStreamWithSha1();
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CMyComPtr<ISequentialOutStream> shaStream = shaStreamSpec;
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shaStreamSpec->SetStream(outStream);
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shaStreamSpec->Init(digest != NULL);
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HRESULT result = Unpack(inStream, resource, lzxMode, shaStream, progress);
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if (digest)
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shaStreamSpec->Final(digest);
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return result;
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}
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static HRESULT UnpackData(IInStream *inStream, const CResource &resource, bool lzxMode, CByteBuffer &buf, Byte *digest)
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{
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size_t size = (size_t)resource.UnpackSize;
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if (size != resource.UnpackSize)
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return E_OUTOFMEMORY;
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buf.Free();
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buf.SetCapacity(size);
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CSequentialOutStreamImp2 *outStreamSpec = new CSequentialOutStreamImp2();
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CMyComPtr<ISequentialOutStream> outStream = outStreamSpec;
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outStreamSpec->Init((Byte *)buf, size);
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CUnpacker unpacker;
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return unpacker.Unpack(inStream, resource, lzxMode, outStream, NULL, digest);
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}
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static const UInt32 kSignatureSize = 8;
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static const Byte kSignature[kSignatureSize] = { 'M', 'S', 'W', 'I', 'M', 0, 0, 0 };
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void CResource::Parse(const Byte *p)
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{
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Flags = p[7];
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PackSize = Get64(p) & (((UInt64)1 << 56) - 1);
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Offset = Get64(p + 8);
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UnpackSize = Get64(p + 16);
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}
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#define GetResource(p, res) res.Parse(p)
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static void GetStream(const Byte *p, CStreamInfo &s)
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{
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s.Resource.Parse(p);
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s.PartNumber = Get16(p + 24);
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s.RefCount = Get32(p + 26);
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memcpy(s.Hash, p + 30, kHashSize);
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}
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static HRESULT ParseDirItem(const Byte *base, size_t pos, size_t size,
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const UString &prefix, CObjectVector<CItem> &items)
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{
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for (;;)
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{
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if (pos + 8 > size)
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return S_FALSE;
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const Byte *p = base + pos;
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UInt64 length = Get64(p);
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if (length == 0)
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return S_OK;
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if (pos + 102 > size || pos + length + 8 > size || length > ((UInt64)1 << 62))
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return S_FALSE;
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CItem item;
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item.Attrib = Get32(p + 8);
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// item.SecurityId = Get32(p + 0xC);
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UInt64 subdirOffset = Get64(p + 0x10);
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GetFileTimeFromMem(p + 0x28, &item.CTime);
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GetFileTimeFromMem(p + 0x30, &item.ATime);
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GetFileTimeFromMem(p + 0x38, &item.MTime);
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memcpy(item.Hash, p + 0x40, kHashSize);
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// UInt16 shortNameLen = Get16(p + 98);
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UInt16 fileNameLen = Get16(p + 100);
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size_t tempPos = pos + 102;
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if (tempPos + fileNameLen > size)
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return S_FALSE;
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wchar_t *sz = item.Name.GetBuffer(prefix.Length() + fileNameLen / 2 + 1);
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MyStringCopy(sz, (const wchar_t *)prefix);
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sz += prefix.Length();
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for (UInt16 i = 0; i + 2 <= fileNameLen; i += 2)
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*sz++ = Get16(base + tempPos + i);
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*sz++ = '\0';
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item.Name.ReleaseBuffer();
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if (fileNameLen == 0 && item.isDir() && !item.HasStream())
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{
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item.Attrib = 0x10; // some swm archives have system/hidden attributes for root
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item.Name.Delete(item.Name.Length() - 1);
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}
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items.Add(item);
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pos += (size_t)length;
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if (item.isDir() && (subdirOffset != 0))
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{
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if (subdirOffset >= size)
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return S_FALSE;
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RINOK(ParseDirItem(base, (size_t)subdirOffset, size, item.Name + WCHAR_PATH_SEPARATOR, items));
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}
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}
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}
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static HRESULT ParseDir(const Byte *base, size_t size,
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const UString &prefix, CObjectVector<CItem> &items)
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{
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size_t pos = 0;
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if (pos + 8 > size)
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return S_FALSE;
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const Byte *p = base + pos;
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UInt32 totalLength = Get32(p);
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// UInt32 numEntries = Get32(p + 4);
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pos += 8;
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{
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/*
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CRecordVector<UInt64> entryLens;
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UInt64 sum = 0;
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for (UInt32 i = 0; i < numEntries; i++)
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{
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if (pos + 8 > size)
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return S_FALSE;
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UInt64 len = Get64(p + pos);
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entryLens.Add(len);
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sum += len;
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pos += 8;
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}
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pos += sum; // skip security descriptors
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while ((pos & 7) != 0)
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pos++;
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if (pos != totalLength)
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return S_FALSE;
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*/
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pos = totalLength;
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}
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return ParseDirItem(base, pos, size, prefix, items);
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}
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static int CompareHashRefs(const int *p1, const int *p2, void *param)
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{
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const CRecordVector<CStreamInfo> &streams = *(const CRecordVector<CStreamInfo> *)param;
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return memcmp(streams[*p1].Hash, streams[*p2].Hash, kHashSize);
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}
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static int CompareStreamsByPos(const CStreamInfo *p1, const CStreamInfo *p2, void * /* param */)
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{
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int res = MyCompare(p1->PartNumber, p2->PartNumber);
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if (res != 0)
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return res;
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return MyCompare(p1->Resource.Offset, p2->Resource.Offset);
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}
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int CompareItems(void *const *a1, void *const *a2, void * /* param */)
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{
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const CItem &i1 = **((const CItem **)a1);
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const CItem &i2 = **((const CItem **)a2);
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if (i1.isDir() != i2.isDir())
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return (i1.isDir()) ? 1 : -1;
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if (i1.isDir())
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return -MyStringCompareNoCase(i1.Name, i2.Name);
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int res = MyCompare(i1.StreamIndex, i2.StreamIndex);
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if (res != 0)
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return res;
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return MyStringCompareNoCase(i1.Name, i2.Name);
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}
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static int FindHash(const CRecordVector<CStreamInfo> &streams,
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const CRecordVector<int> &sortedByHash, const Byte *hash)
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{
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int left = 0, right = streams.Size();
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while (left != right)
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{
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int mid = (left + right) / 2;
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int streamIndex = sortedByHash[mid];
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UInt32 i;
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const Byte *hash2 = streams[streamIndex].Hash;
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for (i = 0; i < kHashSize; i++)
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if (hash[i] != hash2[i])
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break;
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if (i == kHashSize)
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return streamIndex;
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if (hash[i] < hash2[i])
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right = mid;
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else
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left = mid + 1;
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}
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return -1;
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}
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HRESULT CHeader::Parse(const Byte *p)
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{
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UInt32 haderSize = Get32(p + 8);
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if (haderSize < 0x74)
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return S_FALSE;
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Version = Get32(p + 0x0C);
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Flags = Get32(p + 0x10);
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if (!IsSupported())
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return S_FALSE;
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UInt32 chunkSize = Get32(p + 0x14);
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if (chunkSize != kChunkSize && chunkSize != 0)
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return S_FALSE;
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memcpy(Guid, p + 0x18, 16);
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PartNumber = Get16(p + 0x28);
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NumParts = Get16(p + 0x2A);
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int offset = 0x2C;
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if (IsNewVersion())
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{
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NumImages = Get32(p + offset);
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offset += 4;
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}
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GetResource(p + offset, OffsetResource);
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GetResource(p + offset + 0x18, XmlResource);
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GetResource(p + offset + 0x30, MetadataResource);
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/*
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if (IsNewVersion())
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{
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if (haderSize < 0xD0)
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return S_FALSE;
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IntegrityResource.Parse(p + offset + 0x4C);
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BootIndex = Get32(p + 0x48);
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}
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*/
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return S_OK;
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}
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HRESULT ReadHeader(IInStream *inStream, CHeader &h)
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{
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const UInt32 kHeaderSizeMax = 0xD0;
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Byte p[kHeaderSizeMax];
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RINOK(ReadStream_FALSE(inStream, p, kHeaderSizeMax));
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if (memcmp(p, kSignature, kSignatureSize) != 0)
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return S_FALSE;
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return h.Parse(p);
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}
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HRESULT ReadStreams(IInStream *inStream, const CHeader &h, CDatabase &db)
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{
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CByteBuffer offsetBuf;
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RINOK(UnpackData(inStream, h.OffsetResource, h.IsLzxMode(), offsetBuf, NULL));
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for (size_t i = 0; i + kStreamInfoSize <= offsetBuf.GetCapacity(); i += kStreamInfoSize)
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{
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CStreamInfo s;
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GetStream((const Byte *)offsetBuf + i, s);
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if (s.PartNumber == h.PartNumber)
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db.Streams.Add(s);
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}
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return S_OK;
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}
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HRESULT OpenArchive(IInStream *inStream, const CHeader &h, CByteBuffer &xml, CDatabase &db)
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{
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RINOK(UnpackData(inStream, h.XmlResource, h.IsLzxMode(), xml, NULL));
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RINOK(ReadStreams(inStream, h, db));
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bool needBootMetadata = !h.MetadataResource.IsEmpty();
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if (h.PartNumber == 1)
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{
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int imageIndex = 1;
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for (int j = 0; j < db.Streams.Size(); j++)
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{
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// if (imageIndex > 1) break;
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const CStreamInfo &si = db.Streams[j];
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if (!si.Resource.IsMetadata() || si.PartNumber != h.PartNumber)
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continue;
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Byte hash[kHashSize];
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CByteBuffer metadata;
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RINOK(UnpackData(inStream, si.Resource, h.IsLzxMode(), metadata, hash));
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if (memcmp(hash, si.Hash, kHashSize) != 0)
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return S_FALSE;
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wchar_t sz[16];
|
|
ConvertUInt32ToString(imageIndex++, sz);
|
|
UString s = sz;
|
|
s += WCHAR_PATH_SEPARATOR;
|
|
RINOK(ParseDir(metadata, metadata.GetCapacity(), s, db.Items));
|
|
if (needBootMetadata)
|
|
if (h.MetadataResource.Offset == si.Resource.Offset)
|
|
needBootMetadata = false;
|
|
}
|
|
}
|
|
|
|
if (needBootMetadata)
|
|
{
|
|
CByteBuffer metadata;
|
|
RINOK(UnpackData(inStream, h.MetadataResource, h.IsLzxMode(), metadata, NULL));
|
|
RINOK(ParseDir(metadata, metadata.GetCapacity(), L"0" WSTRING_PATH_SEPARATOR, db.Items));
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
HRESULT SortDatabase(CDatabase &db)
|
|
{
|
|
db.Streams.Sort(CompareStreamsByPos, NULL);
|
|
|
|
{
|
|
CRecordVector<int> sortedByHash;
|
|
{
|
|
for (int j = 0; j < db.Streams.Size(); j++)
|
|
sortedByHash.Add(j);
|
|
sortedByHash.Sort(CompareHashRefs, &db.Streams);
|
|
}
|
|
|
|
for (int i = 0; i < db.Items.Size(); i++)
|
|
{
|
|
CItem &item = db.Items[i];
|
|
item.StreamIndex = -1;
|
|
if (item.HasStream())
|
|
item.StreamIndex = FindHash(db.Streams, sortedByHash, item.Hash);
|
|
}
|
|
}
|
|
|
|
{
|
|
CRecordVector<bool> used;
|
|
int j;
|
|
for (j = 0; j < db.Streams.Size(); j++)
|
|
{
|
|
const CStreamInfo &s = db.Streams[j];
|
|
used.Add(s.Resource.IsMetadata() && s.PartNumber == 1);
|
|
}
|
|
for (int i = 0; i < db.Items.Size(); i++)
|
|
{
|
|
CItem &item = db.Items[i];
|
|
if (item.StreamIndex >= 0)
|
|
used[item.StreamIndex] = true;
|
|
}
|
|
for (j = 0; j < db.Streams.Size(); j++)
|
|
if (!used[j])
|
|
{
|
|
CItem item;
|
|
item.StreamIndex = j;
|
|
item.HasMetadata = false;
|
|
db.Items.Add(item);
|
|
}
|
|
}
|
|
|
|
db.Items.Sort(CompareItems, NULL);
|
|
return S_OK;
|
|
}
|
|
|
|
}}
|