diff options
author | Igor Pavlov <ipavlov@users.sourceforge.net> | 2007-01-20 03:00:00 +0300 |
---|---|---|
committer | Kornel LesiĆski <kornel@geekhood.net> | 2016-05-28 02:15:49 +0300 |
commit | d9666cf046a8453b33b3e2fbf4d82295a9f87df3 (patch) | |
tree | c722ed19b844b53042aec0c1d7d2f8381140a5ed /CPP/7zip/Archive/Chm/ChmHandler.cpp | |
parent | 804edc5756fede54dbb1aefda6d39d306111938d (diff) |
4.44 beta
Diffstat (limited to 'CPP/7zip/Archive/Chm/ChmHandler.cpp')
-rwxr-xr-x | CPP/7zip/Archive/Chm/ChmHandler.cpp | 731 |
1 files changed, 731 insertions, 0 deletions
diff --git a/CPP/7zip/Archive/Chm/ChmHandler.cpp b/CPP/7zip/Archive/Chm/ChmHandler.cpp new file mode 100755 index 00000000..6b37c73e --- /dev/null +++ b/CPP/7zip/Archive/Chm/ChmHandler.cpp @@ -0,0 +1,731 @@ +// Chm/Handler.cpp + +#include "StdAfx.h" + +#include "Common/StringConvert.h" +#include "Common/Defs.h" +#include "Common/UTFConvert.h" +#include "Common/ComTry.h" + +#include "Windows/PropVariant.h" +#include "Windows/Time.h" + +#include "../../Common/LimitedStreams.h" +#include "../../Common/StreamUtils.h" +#include "../../Common/ProgressUtils.h" + +#include "../../Compress/Copy/CopyCoder.h" +#include "../../Compress/Lzx/LzxDecoder.h" + +#include "../Common/ItemNameUtils.h" + +#include "ChmHandler.h" + + +using namespace NWindows; +using namespace NTime; + +namespace NArchive { +namespace NChm { + +// #define _CHM_DETAILS + +#ifdef _CHM_DETAILS + +enum +{ + kpidSection = kpidUserDefined, + kpidOffset +}; + +#endif + +STATPROPSTG kProperties[] = +{ + { NULL, kpidPath, VT_BSTR}, + // { NULL, kpidIsFolder, VT_BOOL}, + { NULL, kpidSize, VT_UI8}, + { NULL, kpidMethod, VT_BSTR}, + { NULL, kpidBlock, VT_UI4} + + #ifdef _CHM_DETAILS + , + { L"Section", kpidSection, VT_UI4}, + { L"Offset", kpidOffset, VT_UI4} + #endif +}; + +static const int kNumProperties = sizeof(kProperties) / sizeof(kProperties[0]); + +STDMETHODIMP CHandler::GetArchiveProperty(PROPID /* propID */, PROPVARIANT *value) +{ + value->vt = VT_EMPTY; + return S_OK; +} + +STDMETHODIMP CHandler::GetNumberOfProperties(UInt32 *numProperties) +{ + *numProperties = sizeof(kProperties) / sizeof(kProperties[0]); + return S_OK; +} + +STDMETHODIMP CHandler::GetPropertyInfo(UInt32 index, + BSTR *name, PROPID *propID, VARTYPE *varType) +{ + if(index >= sizeof(kProperties) / sizeof(kProperties[0])) + return E_INVALIDARG; + const STATPROPSTG &srcItem = kProperties[index]; + *propID = srcItem.propid; + *varType = srcItem.vt; + if (srcItem.lpwstrName == 0) + *name = 0; + else + *name = ::SysAllocString(srcItem.lpwstrName); + return S_OK; +} + +STDMETHODIMP CHandler::GetNumberOfArchiveProperties(UInt32 *numProperties) +{ + *numProperties = 0; + return S_OK; +} + +STDMETHODIMP CHandler::GetArchivePropertyInfo(UInt32 /* index */, + BSTR * /* name */, PROPID * /* propID */, VARTYPE * /* varType */) +{ + return E_INVALIDARG; +} + +STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value) +{ + COM_TRY_BEGIN + NWindows::NCOM::CPropVariant propVariant; + if (m_Database.NewFormat) + { + switch(propID) + { + case kpidSize: + propVariant = (UInt64)m_Database.NewFormatString.Length(); + break; + } + propVariant.Detach(value); + return S_OK; + } + int entryIndex; + if (m_Database.LowLevel) + entryIndex = index; + else + entryIndex = m_Database.Indices[index]; + const CItem &item = m_Database.Items[entryIndex]; + switch(propID) + { + case kpidPath: + { + UString us; + if (ConvertUTF8ToUnicode(item.Name, us)) + { + if (!m_Database.LowLevel) + { + if (us.Length() > 1) + if (us[0] == L'/') + us.Delete(0); + } + propVariant = NItemName::GetOSName2(us); + } + break; + } + case kpidIsFolder: + propVariant = item.IsDirectory(); + break; + case kpidSize: + propVariant = item.Size; + break; + case kpidMethod: + { + if (!item.IsDirectory()) + if (item.Section == 0) + propVariant = L"Copy"; + else if (item.Section < m_Database.Sections.Size()) + propVariant = m_Database.Sections[(int)item.Section].GetMethodName(); + break; + } + case kpidBlock: + if (m_Database.LowLevel) + propVariant = item.Section; + else if (item.Section != 0) + propVariant = m_Database.GetFolder(index); + break; + + #ifdef _CHM_DETAILS + + case kpidSection: + propVariant = (UInt32)item.Section; + break; + case kpidOffset: + propVariant = (UInt32)item.Offset; + break; + + #endif + } + propVariant.Detach(value); + return S_OK; + COM_TRY_END +} + +class CPropgressImp: public CProgressVirt +{ + CMyComPtr<IArchiveOpenCallback> m_OpenArchiveCallback; +public: + STDMETHOD(SetTotal)(const UInt64 *numFiles); + STDMETHOD(SetCompleted)(const UInt64 *numFiles); + void Init(IArchiveOpenCallback *openArchiveCallback) + { m_OpenArchiveCallback = openArchiveCallback; } +}; + +STDMETHODIMP CPropgressImp::SetTotal(const UInt64 *numFiles) +{ + if (m_OpenArchiveCallback) + return m_OpenArchiveCallback->SetCompleted(numFiles, NULL); + return S_OK; +} + +STDMETHODIMP CPropgressImp::SetCompleted(const UInt64 *numFiles) +{ + if (m_OpenArchiveCallback) + return m_OpenArchiveCallback->SetCompleted(numFiles, NULL); + return S_OK; +} + +STDMETHODIMP CHandler::Open(IInStream *inStream, + const UInt64 *maxCheckStartPosition, + IArchiveOpenCallback *openArchiveCallback) +{ + COM_TRY_BEGIN + m_Stream.Release(); + try + { + CInArchive archive; + CPropgressImp progressImp; + progressImp.Init(openArchiveCallback); + RINOK(archive.Open(inStream, maxCheckStartPosition, m_Database)); + /* + if (m_Database.LowLevel) + return S_FALSE; + */ + m_Stream = inStream; + } + catch(...) + { + return S_FALSE; + } + return S_OK; + COM_TRY_END +} + +STDMETHODIMP CHandler::Close() +{ + m_Database.Clear(); + m_Stream.Release(); + return S_OK; +} + +class CChmFolderOutStream: + public ISequentialOutStream, + public CMyUnknownImp +{ +public: + MY_UNKNOWN_IMP + + HRESULT Write2(const void *data, UInt32 size, UInt32 *processedSize, bool isOK); + STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize); + + UInt64 m_FolderSize; + UInt64 m_PosInFolder; + UInt64 m_PosInSection; + const CRecordVector<bool> *m_ExtractStatuses; + int m_StartIndex; + int m_CurrentIndex; + int m_NumFiles; + +private: + const CFilesDatabase *m_Database; + CMyComPtr<IArchiveExtractCallback> m_ExtractCallback; + bool m_TestMode; + + bool m_IsOk; + bool m_FileIsOpen; + UInt64 m_RemainFileSize; + CMyComPtr<ISequentialOutStream> m_RealOutStream; + + HRESULT OpenFile(); + HRESULT WriteEmptyFiles(); +public: + void Init( + const CFilesDatabase *database, + IArchiveExtractCallback *extractCallback, + bool testMode); + HRESULT FlushCorrupted(); +}; + +void CChmFolderOutStream::Init( + const CFilesDatabase *database, + IArchiveExtractCallback *extractCallback, + bool testMode) +{ + m_Database = database; + m_ExtractCallback = extractCallback; + m_TestMode = testMode; + + m_CurrentIndex = 0; + m_FileIsOpen = false; +} + +HRESULT CChmFolderOutStream::OpenFile() +{ + Int32 askMode = (*m_ExtractStatuses)[m_CurrentIndex] ? (m_TestMode ? + NExtract::NAskMode::kTest : + NExtract::NAskMode::kExtract) : + NExtract::NAskMode::kSkip; + m_RealOutStream.Release(); + RINOK(m_ExtractCallback->GetStream(m_StartIndex + m_CurrentIndex, &m_RealOutStream, askMode)); + if (!m_RealOutStream && !m_TestMode) + askMode = NArchive::NExtract::NAskMode::kSkip; + return m_ExtractCallback->PrepareOperation(askMode); +} + +HRESULT CChmFolderOutStream::WriteEmptyFiles() +{ + if (m_FileIsOpen) + return S_OK; + for(;m_CurrentIndex < m_NumFiles; m_CurrentIndex++) + { + UInt64 fileSize = m_Database->GetFileSize(m_StartIndex + m_CurrentIndex); + if (fileSize != 0) + return S_OK; + HRESULT result = OpenFile(); + m_RealOutStream.Release(); + RINOK(result); + RINOK(m_ExtractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + } + return S_OK; +} + +// This is WritePart function +HRESULT CChmFolderOutStream::Write2(const void *data, UInt32 size, UInt32 *processedSize, bool isOK) +{ + UInt32 realProcessed = 0; + if (processedSize != NULL) + *processedSize = 0; + while(size != 0) + { + if (m_FileIsOpen) + { + UInt32 numBytesToWrite = (UInt32)MyMin(m_RemainFileSize, (UInt64)(size)); + HRESULT res = S_OK; + if (numBytesToWrite > 0) + { + if (!isOK) + m_IsOk = false; + if (m_RealOutStream) + { + UInt32 processedSizeLocal = 0; + res = m_RealOutStream->Write((const Byte *)data, numBytesToWrite, &processedSizeLocal); + numBytesToWrite = processedSizeLocal; + } + } + realProcessed += numBytesToWrite; + if (processedSize != NULL) + *processedSize = realProcessed; + data = (const void *)((const Byte *)data + numBytesToWrite); + size -= numBytesToWrite; + m_RemainFileSize -= numBytesToWrite; + m_PosInSection += numBytesToWrite; + m_PosInFolder += numBytesToWrite; + if (res != S_OK) + return res; + if (m_RemainFileSize == 0) + { + m_RealOutStream.Release(); + RINOK(m_ExtractCallback->SetOperationResult( + m_IsOk ? + NArchive::NExtract::NOperationResult::kOK: + NArchive::NExtract::NOperationResult::kDataError)); + m_FileIsOpen = false; + } + if (realProcessed > 0) + break; // with this break this function works as write part + } + else + { + if (m_CurrentIndex >= m_NumFiles) + return E_FAIL; + int fullIndex = m_StartIndex + m_CurrentIndex; + m_RemainFileSize = m_Database->GetFileSize(fullIndex); + UInt64 fileOffset = m_Database->GetFileOffset(fullIndex); + if (fileOffset < m_PosInSection) + return E_FAIL; + if (fileOffset > m_PosInSection) + { + UInt32 numBytesToWrite = (UInt32)MyMin(fileOffset - m_PosInSection, UInt64(size)); + realProcessed += numBytesToWrite; + if (processedSize != NULL) + *processedSize = realProcessed; + data = (const void *)((const Byte *)data + numBytesToWrite); + size -= numBytesToWrite; + m_PosInSection += numBytesToWrite; + m_PosInFolder += numBytesToWrite; + } + if (fileOffset == m_PosInSection) + { + RINOK(OpenFile()); + m_FileIsOpen = true; + m_CurrentIndex++; + m_IsOk = true; + } + } + } + return WriteEmptyFiles(); +} + +STDMETHODIMP CChmFolderOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + return Write2(data, size, processedSize, true); +} + +HRESULT CChmFolderOutStream::FlushCorrupted() +{ + const UInt32 kBufferSize = (1 << 10); + Byte buffer[kBufferSize]; + for (int i = 0; i < kBufferSize; i++) + buffer[i] = 0; + while(m_PosInFolder < m_FolderSize) + { + UInt32 size = (UInt32)MyMin(m_FolderSize - m_PosInFolder, (UInt64)kBufferSize); + UInt32 processedSizeLocal = 0; + RINOK(Write2(buffer, size, &processedSizeLocal, false)); + } + return S_OK; +} + + +STDMETHODIMP CHandler::Extract(const UInt32* indices, UInt32 numItems, + Int32 _aTestMode, IArchiveExtractCallback *extractCallback) +{ + COM_TRY_BEGIN + bool allFilesMode = (numItems == UInt32(-1)); + + if (allFilesMode) + numItems = m_Database.NewFormat ? 1: + (m_Database.LowLevel ? + m_Database.Items.Size(): + m_Database.Indices.Size()); + if(numItems == 0) + return S_OK; + bool testMode = (_aTestMode != 0); + + UInt64 currentTotalSize = 0; + + CMyComPtr<ICompressCoder> copyCoder; + UInt32 i; + + CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream; + CMyComPtr<ISequentialInStream> inStream(streamSpec); + + if (m_Database.LowLevel) + { + UInt64 currentItemSize = 0; + UInt64 totalSize = 0; + if (m_Database.NewFormat) + totalSize = m_Database.NewFormatString.Length(); + else + for(i = 0; i < numItems; i++) + totalSize += m_Database.Items[allFilesMode ? i : indices[i]].Size; + extractCallback->SetTotal(totalSize); + + for(i = 0; i < numItems; i++, currentTotalSize += currentItemSize) + { + RINOK(extractCallback->SetCompleted(¤tTotalSize)); + CMyComPtr<ISequentialOutStream> realOutStream; + Int32 askMode; + askMode = testMode ? NArchive::NExtract::NAskMode::kTest : + NArchive::NExtract::NAskMode::kExtract; + Int32 index = allFilesMode ? i : indices[i]; + RINOK(extractCallback->GetStream(index, &realOutStream, askMode)); + + if (m_Database.NewFormat) + { + if (index != 0) + return E_FAIL; + if(!testMode && (!realOutStream)) + continue; + if (!testMode) + { + UInt32 size = m_Database.NewFormatString.Length(); + RINOK(WriteStream(realOutStream, (const char *)m_Database.NewFormatString, size, 0)); + } + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + continue; + } + const CItem &item = m_Database.Items[index]; + + currentItemSize = item.Size; + + if(!testMode && (!realOutStream)) + continue; + RINOK(extractCallback->PrepareOperation(askMode)); + if (item.Section != 0) + { + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kUnSupportedMethod)); + continue; + } + + if (testMode) + { + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + continue; + } + + RINOK(m_Stream->Seek(m_Database.ContentOffset + item.Offset, STREAM_SEEK_SET, NULL)); + streamSpec->SetStream(m_Stream); + streamSpec->Init(item.Size); + + CLocalProgress *localProgressSpec = new CLocalProgress; + CMyComPtr<ICompressProgressInfo> progress = localProgressSpec; + localProgressSpec->Init(extractCallback, false); + + CLocalCompressProgressInfo *localCompressProgressSpec = new CLocalCompressProgressInfo; + CMyComPtr<ICompressProgressInfo> compressProgress = localCompressProgressSpec; + localCompressProgressSpec->Init(progress, ¤tTotalSize, ¤tTotalSize); + + if(!copyCoder) + copyCoder = new NCompress::CCopyCoder; + RINOK(copyCoder->Code(inStream, realOutStream, NULL, NULL, compressProgress)); + realOutStream.Release(); + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + } + return S_OK; + } + + UInt64 lastFolderIndex = ((UInt64)0 - 1); + for(i = 0; i < numItems; i++) + { + UInt32 index = allFilesMode ? i : indices[i]; + int entryIndex = m_Database.Indices[index]; + const CItem &item = m_Database.Items[entryIndex]; + UInt64 sectionIndex = item.Section; + if (item.IsDirectory() || item.Size == 0) + continue; + if (sectionIndex == 0) + { + currentTotalSize += item.Size; + continue; + } + const CSectionInfo §ion = m_Database.Sections[(int)item.Section]; + if (section.IsLzx()) + { + const CLzxInfo &lzxInfo = section.Methods[0].LzxInfo; + UInt64 folderIndex = m_Database.GetFolder(index); + if (lastFolderIndex == folderIndex) + folderIndex++; + lastFolderIndex = m_Database.GetLastFolder(index); + for (; folderIndex <= lastFolderIndex; folderIndex++) + currentTotalSize += lzxInfo.GetFolderSize(); + } + } + + RINOK(extractCallback->SetTotal(currentTotalSize)); + + NCompress::NLzx::CDecoder *lzxDecoderSpec = 0; + CMyComPtr<ICompressCoder> lzxDecoder; + CChmFolderOutStream *chmFolderOutStream = 0; + CMyComPtr<ISequentialOutStream> outStream; + + currentTotalSize = 0; + + CRecordVector<bool> extractStatuses; + for(i = 0; i < numItems;) + { + RINOK(extractCallback->SetCompleted(¤tTotalSize)); + UInt32 index = allFilesMode ? i : indices[i]; + i++; + int entryIndex = m_Database.Indices[index]; + const CItem &item = m_Database.Items[entryIndex]; + UInt64 sectionIndex = item.Section; + Int32 askMode= testMode ? + NArchive::NExtract::NAskMode::kTest : + NArchive::NExtract::NAskMode::kExtract; + if (item.IsDirectory()) + { + CMyComPtr<ISequentialOutStream> realOutStream; + RINOK(extractCallback->GetStream(index, &realOutStream, askMode)); + RINOK(extractCallback->PrepareOperation(askMode)); + realOutStream.Release(); + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + continue; + } + + CLocalProgress *localProgressSpec = new CLocalProgress; + CMyComPtr<ICompressProgressInfo> progress = localProgressSpec; + localProgressSpec->Init(extractCallback, false); + + CLocalCompressProgressInfo *localCompressProgressSpec = new CLocalCompressProgressInfo; + CMyComPtr<ICompressProgressInfo> compressProgress = localCompressProgressSpec; + localCompressProgressSpec->Init(progress, NULL, ¤tTotalSize); + + if (item.Size == 0 || sectionIndex == 0) + { + CMyComPtr<ISequentialOutStream> realOutStream; + RINOK(extractCallback->GetStream(index, &realOutStream, askMode)); + if(!testMode && (!realOutStream)) + continue; + RINOK(extractCallback->PrepareOperation(askMode)); + if (!testMode && item.Size != 0) + { + RINOK(m_Stream->Seek(m_Database.ContentOffset + item.Offset, STREAM_SEEK_SET, NULL)); + streamSpec->SetStream(m_Stream); + streamSpec->Init(item.Size); + if(!copyCoder) + copyCoder = new NCompress::CCopyCoder; + RINOK(copyCoder->Code(inStream, realOutStream, NULL, NULL, compressProgress)); + } + realOutStream.Release(); + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK)); + currentTotalSize += item.Size; + continue; + } + + const CSectionInfo §ion = m_Database.Sections[(int)sectionIndex]; + + if (!section.IsLzx()) + { + CMyComPtr<ISequentialOutStream> realOutStream; + RINOK(extractCallback->GetStream(index, &realOutStream, askMode)); + if(!testMode && (!realOutStream)) + continue; + RINOK(extractCallback->PrepareOperation(askMode)); + RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kUnSupportedMethod)); + continue; + } + + const CLzxInfo &lzxInfo = section.Methods[0].LzxInfo; + + if (chmFolderOutStream == 0) + { + chmFolderOutStream = new CChmFolderOutStream; + outStream = chmFolderOutStream; + } + + chmFolderOutStream->Init(&m_Database, extractCallback, testMode); + + if(lzxDecoderSpec == NULL) + { + lzxDecoderSpec = new NCompress::NLzx::CDecoder; + lzxDecoder = lzxDecoderSpec; + } + + UInt64 folderIndex = m_Database.GetFolder(index); + + UInt64 compressedPos = m_Database.ContentOffset + section.Offset; + UInt32 numDictBits = lzxInfo.GetNumDictBits(); + RINOK(lzxDecoderSpec->SetParams(numDictBits)); + + const CItem *lastItem = &item; + extractStatuses.Clear(); + extractStatuses.Add(true); + + for (;; folderIndex++) + { + RINOK(extractCallback->SetCompleted(¤tTotalSize)); + + UInt64 startPos = lzxInfo.GetFolderPos(folderIndex); + UInt64 finishPos = lastItem->Offset + lastItem->Size; + UInt64 limitFolderIndex = lzxInfo.GetFolder(finishPos); + + lastFolderIndex = m_Database.GetLastFolder(index); + UInt64 folderSize = lzxInfo.GetFolderSize(); + UInt64 unPackSize = folderSize; + if (extractStatuses.IsEmpty()) + chmFolderOutStream->m_StartIndex = index + 1; + else + chmFolderOutStream->m_StartIndex = index; + if (limitFolderIndex == folderIndex) + { + for(; i < numItems; i++) + { + UInt32 nextIndex = allFilesMode ? i : indices[i]; + int entryIndex = m_Database.Indices[nextIndex]; + const CItem &nextItem = m_Database.Items[entryIndex]; + if (nextItem.Section != sectionIndex) + break; + UInt64 nextFolderIndex = m_Database.GetFolder(nextIndex); + if (nextFolderIndex != folderIndex) + break; + for (index++; index < nextIndex; index++) + extractStatuses.Add(false); + extractStatuses.Add(true); + index = nextIndex; + lastItem = &nextItem; + if (nextItem.Size != 0) + finishPos = nextItem.Offset + nextItem.Size; + lastFolderIndex = m_Database.GetLastFolder(index); + } + } + unPackSize = MyMin(finishPos - startPos, unPackSize); + + chmFolderOutStream->m_FolderSize = folderSize; + chmFolderOutStream->m_PosInFolder = 0; + chmFolderOutStream->m_PosInSection = startPos; + chmFolderOutStream->m_ExtractStatuses = &extractStatuses; + chmFolderOutStream->m_NumFiles = extractStatuses.Size(); + chmFolderOutStream->m_CurrentIndex = 0; + try + { + UInt64 startBlock = lzxInfo.GetBlockIndexFromFolderIndex(folderIndex); + const CResetTable &rt = lzxInfo.ResetTable; + UInt32 numBlocks = (UInt32)rt.GetNumBlocks(unPackSize); + for (UInt32 b = 0; b < numBlocks; b++) + { + UInt64 completedSize = currentTotalSize + chmFolderOutStream->m_PosInSection - startPos; + RINOK(extractCallback->SetCompleted(&completedSize)); + UInt64 bCur = startBlock + b; + if (bCur >= rt.ResetOffsets.Size()) + return E_FAIL; + UInt64 startOffset = rt.ResetOffsets[(int)startBlock]; + UInt64 offset = rt.ResetOffsets[(int)bCur]; + UInt64 compressedSize; + rt.GetCompressedSizeOfBlock(bCur, compressedSize); + UInt64 rem = finishPos - chmFolderOutStream->m_PosInSection; + if (rem > rt.BlockSize) + rem = rt.BlockSize; + // const UInt64 *offsets = (const UInt64 *)&rt.ResetOffsets.Front(); + RINOK(m_Stream->Seek(compressedPos + offset, STREAM_SEEK_SET, NULL)); + streamSpec->SetStream(m_Stream); + streamSpec->Init(compressedSize); + lzxDecoderSpec->SetKeepHistory(b > 0, (int)((offset - startOffset) & 1)); + RINOK(lzxDecoder->Code(inStream, outStream, NULL, &rem, NULL)); + } + } + catch(...) + { + RINOK(chmFolderOutStream->FlushCorrupted()); + } + currentTotalSize += folderSize; + if (folderIndex == lastFolderIndex) + break; + extractStatuses.Clear(); + } + } + return S_OK; + COM_TRY_END +} + +STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems) +{ + *numItems = m_Database.NewFormat ? 1: + (m_Database.LowLevel ? + m_Database.Items.Size(): + m_Database.Indices.Size()); + return S_OK; +} + +}} |