1 files changed, 1076 insertions, 0 deletions

diff --git a/src/libs/7zip/unix/CPP/7zip/Archive/Zip/ZipUpdate.cpp b/src/libs/7zip/unix/CPP/7zip/Archive/Zip/ZipUpdate.cpp
new file mode 100644
index 000000000..bd0c8221d
--- /dev/null
+++ b/src/libs/7zip/unix/CPP/7zip/Archive/Zip/ZipUpdate.cpp
@@ -0,0 +1,1076 @@
+// ZipUpdate.cpp
+
+#include "StdAfx.h"
+
+#include "../../../../C/Alloc.h"
+
+#include "Common/AutoPtr.h"
+#include "Common/Defs.h"
+#include "Common/StringConvert.h"
+
+#include "Windows/Defs.h"
+#include "Windows/Thread.h"
+
+#include "../../Common/CreateCoder.h"
+#include "../../Common/LimitedStreams.h"
+#include "../../Common/OutMemStream.h"
+#include "../../Common/ProgressUtils.h"
+#ifndef _7ZIP_ST
+#include "../../Common/ProgressMt.h"
+#endif
+#include "../../Common/StreamUtils.h"
+
+#include "../../Compress/CopyCoder.h"
+
+#include "ZipAddCommon.h"
+#include "ZipOut.h"
+#include "ZipUpdate.h"
+
+using namespace NWindows;
+using namespace NSynchronization;
+
+namespace NArchive {
+namespace NZip {
+
+static const Byte kHostOS =
+  #ifdef _WIN32
+  NFileHeader::NHostOS::kFAT;
+  #else
+  NFileHeader::NHostOS::kUnix;
+  #endif
+
+static const Byte kMadeByHostOS = kHostOS;
+static const Byte kExtractHostOS = kHostOS;
+
+static const Byte kMethodForDirectory = NFileHeader::NCompressionMethod::kStored;
+
+static HRESULT CopyBlockToArchive(ISequentialInStream *inStream,
+    COutArchive &outArchive, ICompressProgressInfo *progress)
+{
+  CMyComPtr<ISequentialOutStream> outStream;
+  outArchive.CreateStreamForCopying(&outStream);
+  return NCompress::CopyStream(inStream, outStream, progress);
+}
+
+static HRESULT WriteRange(IInStream *inStream, COutArchive &outArchive,
+    const CUpdateRange &range, ICompressProgressInfo *progress)
+{
+  UInt64 position;
+  RINOK(inStream->Seek(range.Position, STREAM_SEEK_SET, &position));
+
+  CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream;
+  CMyComPtr<CLimitedSequentialInStream> inStreamLimited(streamSpec);
+  streamSpec->SetStream(inStream);
+  streamSpec->Init(range.Size);
+
+  RINOK(CopyBlockToArchive(inStreamLimited, outArchive, progress));
+  return progress->SetRatioInfo(&range.Size, &range.Size);
+}
+
+static void SetFileHeader(
+    COutArchive &archive,
+    const CCompressionMethodMode &options,
+    const CUpdateItem &ui,
+    CItem &item)
+{
+  item.UnPackSize = ui.Size;
+  bool isDir;
+
+  item.ClearFlags();
+
+  if (ui.NewProperties)
+  {
+    isDir = ui.IsDir;
+    item.Name = ui.Name;
+    item.SetUtf8(ui.IsUtf8);
+    item.ExternalAttributes = ui.Attributes;
+    item.Time = ui.Time;
+    item.NtfsMTime = ui.NtfsMTime;
+    item.NtfsATime = ui.NtfsATime;
+    item.NtfsCTime = ui.NtfsCTime;
+    item.NtfsTimeIsDefined = ui.NtfsTimeIsDefined;
+  }
+  else
+    isDir = item.IsDir();
+
+  item.LocalHeaderPosition = archive.GetCurrentPosition();
+  item.MadeByVersion.HostOS = kMadeByHostOS;
+  item.MadeByVersion.Version = NFileHeader::NCompressionMethod::kMadeByProgramVersion;
+  
+  item.ExtractVersion.HostOS = kExtractHostOS;
+
+  item.InternalAttributes = 0; // test it
+  item.SetEncrypted(!isDir && options.PasswordIsDefined);
+  if (isDir)
+  {
+    item.ExtractVersion.Version = NFileHeader::NCompressionMethod::kExtractVersion_Dir;
+    item.CompressionMethod = kMethodForDirectory;
+    item.PackSize = 0;
+    item.FileCRC = 0; // test it
+  }
+}
+
+static void SetItemInfoFromCompressingResult(const CCompressingResult &compressingResult,
+    bool isAesMode, Byte aesKeyMode, CItem &item)
+{
+  item.ExtractVersion.Version = compressingResult.ExtractVersion;
+  item.CompressionMethod = compressingResult.Method;
+  item.FileCRC = compressingResult.CRC;
+  item.UnPackSize = compressingResult.UnpackSize;
+  item.PackSize = compressingResult.PackSize;
+
+  item.LocalExtra.Clear();
+  item.CentralExtra.Clear();
+
+  if (isAesMode)
+  {
+    CWzAesExtraField wzAesField;
+    wzAesField.Strength = aesKeyMode;
+    wzAesField.Method = compressingResult.Method;
+    item.CompressionMethod = NFileHeader::NCompressionMethod::kWzAES;
+    item.FileCRC = 0;
+    CExtraSubBlock sb;
+    wzAesField.SetSubBlock(sb);
+    item.LocalExtra.SubBlocks.Add(sb);
+    item.CentralExtra.SubBlocks.Add(sb);
+  }
+}
+
+#ifndef _7ZIP_ST
+
+static THREAD_FUNC_DECL CoderThread(void *threadCoderInfo);
+
+struct CThreadInfo
+{
+  #ifdef EXTERNAL_CODECS
+  CMyComPtr<ICompressCodecsInfo> _codecsInfo;
+  const CObjectVector<CCodecInfoEx> *_externalCodecs;
+  #endif
+
+  NWindows::CThread Thread;
+  NWindows::NSynchronization::CAutoResetEvent CompressEvent;
+  NWindows::NSynchronization::CAutoResetEventWFMO CompressionCompletedEvent;
+  bool ExitThread;
+
+  CMtCompressProgress *ProgressSpec;
+  CMyComPtr<ICompressProgressInfo> Progress;
+
+  COutMemStream *OutStreamSpec;
+  CMyComPtr<IOutStream> OutStream;
+  CMyComPtr<ISequentialInStream> InStream;
+
+  CAddCommon Coder;
+  HRESULT Result;
+  CCompressingResult CompressingResult;
+
+  bool IsFree;
+  UInt32 UpdateIndex;
+
+  CThreadInfo(const CCompressionMethodMode &options):
+      ExitThread(false),
+      ProgressSpec(0),
+      OutStreamSpec(0),
+      Coder(options)
+  {}
+  
+  HRESULT CreateEvents(CSynchro *sync)
+  {
+    RINOK(CompressEvent.CreateIfNotCreated());
+    return CompressionCompletedEvent.CreateIfNotCreated(sync);
+  }
+  HRes CreateThread() { return Thread.Create(CoderThread, this); }
+
+  void WaitAndCode();
+  void StopWaitClose()
+  {
+    ExitThread = true;
+    if (OutStreamSpec != 0)
+      OutStreamSpec->StopWriting(E_ABORT);
+    if (CompressEvent.IsCreated())
+      CompressEvent.Set();
+    Thread.Wait();
+    Thread.Close();
+  }
+
+};
+
+void CThreadInfo::WaitAndCode()
+{
+  for (;;)
+  {
+    CompressEvent.Lock();
+    if (ExitThread)
+      return;
+    Result = Coder.Compress(
+        #ifdef EXTERNAL_CODECS
+        _codecsInfo, _externalCodecs,
+        #endif
+        InStream, OutStream, Progress, CompressingResult);
+    if (Result == S_OK && Progress)
+      Result = Progress->SetRatioInfo(&CompressingResult.UnpackSize, &CompressingResult.PackSize);
+    CompressionCompletedEvent.Set();
+  }
+}
+
+static THREAD_FUNC_DECL CoderThread(void *threadCoderInfo)
+{
+  ((CThreadInfo *)threadCoderInfo)->WaitAndCode();
+  return 0;
+}
+
+class CThreads
+{
+public:
+  CObjectVector<CThreadInfo> Threads;
+  ~CThreads()
+  {
+    for (int i = 0; i < Threads.Size(); i++)
+      Threads[i].StopWaitClose();
+  }
+};
+
+struct CMemBlocks2: public CMemLockBlocks
+{
+  CCompressingResult CompressingResult;
+  bool Defined;
+  bool Skip;
+  CMemBlocks2(): Defined(false), Skip(false) {}
+};
+
+class CMemRefs
+{
+public:
+  CMemBlockManagerMt *Manager;
+  CObjectVector<CMemBlocks2> Refs;
+  CMemRefs(CMemBlockManagerMt *manager): Manager(manager) {} ;
+  ~CMemRefs()
+  {
+    for (int i = 0; i < Refs.Size(); i++)
+      Refs[i].FreeOpt(Manager);
+  }
+};
+
+class CMtProgressMixer2:
+  public ICompressProgressInfo,
+  public CMyUnknownImp
+{
+  UInt64 ProgressOffset;
+  UInt64 InSizes[2];
+  UInt64 OutSizes[2];
+  CMyComPtr<IProgress> Progress;
+  CMyComPtr<ICompressProgressInfo> RatioProgress;
+  bool _inSizeIsMain;
+public:
+  NWindows::NSynchronization::CCriticalSection CriticalSection;
+  MY_UNKNOWN_IMP
+  void Create(IProgress *progress, bool inSizeIsMain);
+  void SetProgressOffset(UInt64 progressOffset);
+  HRESULT SetRatioInfo(int index, const UInt64 *inSize, const UInt64 *outSize);
+  STDMETHOD(SetRatioInfo)(const UInt64 *inSize, const UInt64 *outSize);
+};
+
+void CMtProgressMixer2::Create(IProgress *progress, bool inSizeIsMain)
+{
+  Progress = progress;
+  Progress.QueryInterface(IID_ICompressProgressInfo, &RatioProgress);
+  _inSizeIsMain = inSizeIsMain;
+  ProgressOffset = InSizes[0] = InSizes[1] = OutSizes[0] = OutSizes[1] = 0;
+}
+
+void CMtProgressMixer2::SetProgressOffset(UInt64 progressOffset)
+{
+  CriticalSection.Enter();
+  InSizes[1] = OutSizes[1] = 0;
+  ProgressOffset = progressOffset;
+  CriticalSection.Leave();
+}
+
+HRESULT CMtProgressMixer2::SetRatioInfo(int index, const UInt64 *inSize, const UInt64 *outSize)
+{
+  NWindows::NSynchronization::CCriticalSectionLock lock(CriticalSection);
+  if (index == 0 && RatioProgress)
+  {
+    RINOK(RatioProgress->SetRatioInfo(inSize, outSize));
+  }
+  if (inSize != 0)
+    InSizes[index] = *inSize;
+  if (outSize != 0)
+    OutSizes[index] = *outSize;
+  UInt64 v = ProgressOffset + (_inSizeIsMain  ?
+      (InSizes[0] + InSizes[1]) :
+      (OutSizes[0] + OutSizes[1]));
+  return Progress->SetCompleted(&v);
+}
+
+STDMETHODIMP CMtProgressMixer2::SetRatioInfo(const UInt64 *inSize, const UInt64 *outSize)
+{
+  return SetRatioInfo(0, inSize, outSize);
+}
+
+class CMtProgressMixer:
+  public ICompressProgressInfo,
+  public CMyUnknownImp
+{
+public:
+  CMtProgressMixer2 *Mixer2;
+  CMyComPtr<ICompressProgressInfo> RatioProgress;
+  void Create(IProgress *progress, bool inSizeIsMain);
+  MY_UNKNOWN_IMP
+  STDMETHOD(SetRatioInfo)(const UInt64 *inSize, const UInt64 *outSize);
+};
+
+void CMtProgressMixer::Create(IProgress *progress, bool inSizeIsMain)
+{
+  Mixer2 = new CMtProgressMixer2;
+  RatioProgress = Mixer2;
+  Mixer2->Create(progress, inSizeIsMain);
+}
+
+STDMETHODIMP CMtProgressMixer::SetRatioInfo(const UInt64 *inSize, const UInt64 *outSize)
+{
+  return Mixer2->SetRatioInfo(1, inSize, outSize);
+}
+
+
+#endif
+
+
+static HRESULT UpdateItemOldData(COutArchive &archive,
+    IInStream *inStream,
+    const CUpdateItem &ui, CItemEx &item,
+    /* bool izZip64, */
+    ICompressProgressInfo *progress,
+    UInt64 &complexity)
+{
+  if (ui.NewProperties)
+  {
+    if (item.HasDescriptor())
+      return E_NOTIMPL;
+    
+    // use old name size.
+    // CUpdateRange range(item.GetLocalExtraPosition(), item.LocalExtraSize + item.PackSize);
+    CUpdateRange range(item.GetDataPosition(), item.PackSize);
+    
+    // item.ExternalAttributes = ui.Attributes;
+    // Test it
+    item.Name = ui.Name;
+    item.SetUtf8(ui.IsUtf8);
+    item.Time = ui.Time;
+    item.NtfsMTime = ui.NtfsMTime;
+    item.NtfsATime = ui.NtfsATime;
+    item.NtfsCTime = ui.NtfsCTime;
+    item.NtfsTimeIsDefined = ui.NtfsTimeIsDefined;
+
+    item.CentralExtra.RemoveUnknownSubBlocks();
+    item.LocalExtra.RemoveUnknownSubBlocks();
+    
+    archive.PrepareWriteCompressedData2((UInt16)item.Name.Length(), item.UnPackSize, item.PackSize, item.LocalExtra.HasWzAesField());
+    item.LocalHeaderPosition = archive.GetCurrentPosition();
+    archive.SeekToPackedDataPosition();
+    RINOK(WriteRange(inStream, archive, range, progress));
+    complexity += range.Size;
+    archive.WriteLocalHeader(item);
+  }
+  else
+  {
+    CUpdateRange range(item.LocalHeaderPosition, item.GetLocalFullSize());
+    
+    // set new header position
+    item.LocalHeaderPosition = archive.GetCurrentPosition();
+    
+    RINOK(WriteRange(inStream, archive, range, progress));
+    complexity += range.Size;
+    archive.MoveBasePosition(range.Size);
+  }
+  return S_OK;
+}
+
+static void WriteDirHeader(COutArchive &archive, const CCompressionMethodMode *options,
+    const CUpdateItem &ui, CItemEx &item)
+{
+  SetFileHeader(archive, *options, ui, item);
+  archive.PrepareWriteCompressedData((UInt16)item.Name.Length(), ui.Size, options->IsAesMode);
+  archive.WriteLocalHeader(item);
+}
+
+static HRESULT Update2St(
+    DECL_EXTERNAL_CODECS_LOC_VARS
+    COutArchive &archive,
+    CInArchive *inArchive,
+    IInStream *inStream,
+    const CObjectVector<CItemEx> &inputItems,
+    const CObjectVector<CUpdateItem> &updateItems,
+    const CCompressionMethodMode *options,
+    const CByteBuffer *comment,
+    IArchiveUpdateCallback *updateCallback)
+{
+  CLocalProgress *lps = new CLocalProgress;
+  CMyComPtr<ICompressProgressInfo> progress = lps;
+  lps->Init(updateCallback, true);
+
+  CAddCommon compressor(*options);
+  
+  CObjectVector<CItem> items;
+  UInt64 unpackSizeTotal = 0, packSizeTotal = 0;
+
+  for (int itemIndex = 0; itemIndex < updateItems.Size(); itemIndex++)
+  {
+    lps->InSize = unpackSizeTotal;
+    lps->OutSize = packSizeTotal;
+    RINOK(lps->SetCur());
+    const CUpdateItem &ui = updateItems[itemIndex];
+    CItemEx item;
+    if (!ui.NewProperties || !ui.NewData)
+    {
+      item = inputItems[ui.IndexInArchive];
+      if (inArchive->ReadLocalItemAfterCdItemFull(item) != S_OK)
+        return E_NOTIMPL;
+    }
+
+    if (ui.NewData)
+    {
+      bool isDir = ((ui.NewProperties) ? ui.IsDir : item.IsDir());
+      if (isDir)
+      {
+        WriteDirHeader(archive, options, ui, item);
+      }
+      else
+      {
+        CMyComPtr<ISequentialInStream> fileInStream;
+        HRESULT res = updateCallback->GetStream(ui.IndexInClient, &fileInStream);
+        if (res == S_FALSE)
+        {
+          lps->ProgressOffset += ui.Size;
+          RINOK(updateCallback->SetOperationResult(NArchive::NUpdate::NOperationResult::kOK));
+          continue;
+        }
+        RINOK(res);
+
+        // file Size can be 64-bit !!!
+        SetFileHeader(archive, *options, ui, item);
+        archive.PrepareWriteCompressedData((UInt16)item.Name.Length(), ui.Size, options->IsAesMode);
+        CCompressingResult compressingResult;
+        CMyComPtr<IOutStream> outStream;
+        archive.CreateStreamForCompressing(&outStream);
+        RINOK(compressor.Compress(
+            EXTERNAL_CODECS_LOC_VARS
+            fileInStream, outStream, progress, compressingResult));
+        SetItemInfoFromCompressingResult(compressingResult, options->IsAesMode, options->AesKeyMode, item);
+        archive.WriteLocalHeader(item);
+        RINOK(updateCallback->SetOperationResult(NArchive::NUpdate::NOperationResult::kOK));
+        unpackSizeTotal += item.UnPackSize;
+        packSizeTotal += item.PackSize;
+      }
+    }
+    else
+    {
+      UInt64 complexity = 0;
+      lps->SendRatio = false;
+      RINOK(UpdateItemOldData(archive, inStream, ui, item, progress, complexity));
+      lps->SendRatio = true;
+      lps->ProgressOffset += complexity;
+    }
+    items.Add(item);
+    lps->ProgressOffset += NFileHeader::kLocalBlockSize;
+  }
+  archive.WriteCentralDir(items, comment);
+  return S_OK;
+}
+
+static HRESULT Update2(
+    DECL_EXTERNAL_CODECS_LOC_VARS
+    COutArchive &archive,
+    CInArchive *inArchive,
+    IInStream *inStream,
+    const CObjectVector<CItemEx> &inputItems,
+    const CObjectVector<CUpdateItem> &updateItems,
+    const CCompressionMethodMode *options,
+    const CByteBuffer *comment,
+    IArchiveUpdateCallback *updateCallback)
+{
+  UInt64 complexity = 0;
+  UInt64 numFilesToCompress = 0;
+  UInt64 numBytesToCompress = 0;
+ 
+  int i;
+  for(i = 0; i < updateItems.Size(); i++)
+  {
+    const CUpdateItem &ui = updateItems[i];
+    if (ui.NewData)
+    {
+      complexity += ui.Size;
+      numBytesToCompress += ui.Size;
+      numFilesToCompress++;
+      /*
+      if (ui.Commented)
+        complexity += ui.CommentRange.Size;
+      */
+    }
+    else
+    {
+      CItemEx inputItem = inputItems[ui.IndexInArchive];
+      if (inArchive->ReadLocalItemAfterCdItemFull(inputItem) != S_OK)
+        return E_NOTIMPL;
+      complexity += inputItem.GetLocalFullSize();
+      // complexity += inputItem.GetCentralExtraPlusCommentSize();
+    }
+    complexity += NFileHeader::kLocalBlockSize;
+    complexity += NFileHeader::kCentralBlockSize;
+  }
+
+  if (comment)
+    complexity += comment->GetCapacity();
+  complexity++; // end of central
+  updateCallback->SetTotal(complexity);
+
+  CAddCommon compressor(*options);
+  
+  complexity = 0;
+  
+  #ifndef _7ZIP_ST
+
+  const size_t kNumMaxThreads = (1 << 10);
+  UInt32 numThreads = options->NumThreads;
+  if (numThreads > kNumMaxThreads)
+    numThreads = kNumMaxThreads;
+  
+  const size_t kMemPerThread = (1 << 25);
+  const size_t kBlockSize = 1 << 16;
+
+  CCompressionMethodMode options2;
+  if (options != 0)
+    options2 = *options;
+
+  bool mtMode = ((options != 0) && (numThreads > 1));
+
+  if (numFilesToCompress <= 1)
+    mtMode = false;
+
+  if (mtMode)
+  {
+    Byte method = options->MethodSequence.Front();
+    if (method == NFileHeader::NCompressionMethod::kStored && !options->PasswordIsDefined)
+      mtMode = false;
+    if (method == NFileHeader::NCompressionMethod::kBZip2)
+    {
+      UInt64 averageSize = numBytesToCompress / numFilesToCompress;
+      UInt32 blockSize = options->DicSize;
+      if (blockSize == 0)
+        blockSize = 1;
+      UInt64 averageNumberOfBlocks = averageSize / blockSize;
+      UInt32 numBZip2Threads = 32;
+      if (averageNumberOfBlocks < numBZip2Threads)
+        numBZip2Threads = (UInt32)averageNumberOfBlocks;
+      if (numBZip2Threads < 1)
+        numBZip2Threads = 1;
+      numThreads = numThreads / numBZip2Threads;
+      options2.NumThreads = numBZip2Threads;
+      if (numThreads <= 1)
+        mtMode = false;
+    }
+    if (method == NFileHeader::NCompressionMethod::kLZMA)
+    {
+      UInt32 numLZMAThreads = (options->Algo > 0 ? 2 : 1);
+      numThreads /= numLZMAThreads;
+      options2.NumThreads = numLZMAThreads;
+      if (numThreads <= 1)
+        mtMode = false;
+    }
+  }
+
+  if (!mtMode)
+  #endif
+    return Update2St(
+        EXTERNAL_CODECS_LOC_VARS
+        archive, inArchive,inStream,
+        inputItems, updateItems, options, comment, updateCallback);
+
+
+  #ifndef _7ZIP_ST
+
+  // Warning : before memManager, threads and compressingCompletedEvents
+  // in order to have a "good" order for the destructor
+  NWindows::NSynchronization::CSynchro synchroForCompressingCompletedEvents;
+  synchroForCompressingCompletedEvents.Create();
+  NWindows::NSynchronization::CSynchro synchroForOutStreamSpec;
+  synchroForOutStreamSpec.Create();
+  
+
+  CObjectVector<CItem> items;
+
+  CMtProgressMixer *mtProgressMixerSpec = new CMtProgressMixer;
+  CMyComPtr<ICompressProgressInfo> progress = mtProgressMixerSpec;
+  mtProgressMixerSpec->Create(updateCallback, true);
+
+  CMtCompressProgressMixer mtCompressProgressMixer;
+  mtCompressProgressMixer.Init(numThreads, mtProgressMixerSpec->RatioProgress);
+
+  CMemBlockManagerMt memManager(kBlockSize);
+  CMemRefs refs(&memManager);
+
+  CThreads threads;
+  CRecordVector<HANDLE> compressingCompletedEvents;
+  CRecordVector<int> threadIndices;  // list threads in order of updateItems
+
+  {
+    RINOK(memManager.AllocateSpaceAlways(&synchroForOutStreamSpec,(size_t)numThreads * (kMemPerThread / kBlockSize)));
+    for(i = 0; i < updateItems.Size(); i++)
+      refs.Refs.Add(CMemBlocks2());
+
+    UInt32 i;
+    for (i = 0; i < numThreads; i++)
+      threads.Threads.Add(CThreadInfo(options2));
+
+    for (i = 0; i < numThreads; i++)
+    {
+      CThreadInfo &threadInfo = threads.Threads[i];
+      #ifdef EXTERNAL_CODECS
+      threadInfo._codecsInfo = codecsInfo;
+      threadInfo._externalCodecs = externalCodecs;
+      #endif
+      RINOK(threadInfo.CreateEvents(&synchroForCompressingCompletedEvents));
+      threadInfo.OutStreamSpec = new COutMemStream(&memManager);
+      RINOK(threadInfo.OutStreamSpec->CreateEvents(&synchroForOutStreamSpec));
+      threadInfo.OutStream = threadInfo.OutStreamSpec;
+      threadInfo.IsFree = true;
+      threadInfo.ProgressSpec = new CMtCompressProgress();
+      threadInfo.Progress = threadInfo.ProgressSpec;
+      threadInfo.ProgressSpec->Init(&mtCompressProgressMixer, (int)i);
+      RINOK(threadInfo.CreateThread());
+    }
+  }
+  int mtItemIndex = 0;
+
+  int itemIndex = 0;
+  int lastRealStreamItemIndex = -1;
+
+  while (itemIndex < updateItems.Size())
+  {
+    if ((UInt32)threadIndices.Size() < numThreads && mtItemIndex < updateItems.Size())
+    {
+      const CUpdateItem &ui = updateItems[mtItemIndex++];
+      if (!ui.NewData)
+        continue;
+      CItemEx item;
+      if (ui.NewProperties)
+      {
+        if (ui.IsDir)
+          continue;
+      }
+      else
+      {
+        item = inputItems[ui.IndexInArchive];
+        if (inArchive->ReadLocalItemAfterCdItemFull(item) != S_OK)
+          return E_NOTIMPL;
+        if (item.IsDir())
+          continue;
+      }
+      CMyComPtr<ISequentialInStream> fileInStream;
+      {
+        NWindows::NSynchronization::CCriticalSectionLock lock(mtProgressMixerSpec->Mixer2->CriticalSection);
+        HRESULT res = updateCallback->GetStream(ui.IndexInClient, &fileInStream);
+        if (res == S_FALSE)
+        {
+          complexity += ui.Size;
+          complexity += NFileHeader::kLocalBlockSize;
+          mtProgressMixerSpec->Mixer2->SetProgressOffset(complexity);
+          RINOK(updateCallback->SetOperationResult(NArchive::NUpdate::NOperationResult::kOK));
+          refs.Refs[mtItemIndex - 1].Skip = true;
+          continue;
+        }
+        RINOK(res);
+        RINOK(updateCallback->SetOperationResult(NArchive::NUpdate::NOperationResult::kOK));
+      }
+
+      for (UInt32 i = 0; i < numThreads; i++)
+      {
+        CThreadInfo &threadInfo = threads.Threads[i];
+        if (threadInfo.IsFree)
+        {
+          threadInfo.IsFree = false;
+          threadInfo.InStream = fileInStream;
+
+          // !!!!! we must release ref before sending event
+          // BUG was here in v4.43 and v4.44. It could change ref counter in two threads in same time
+          fileInStream.Release();
+
+          threadInfo.OutStreamSpec->Init();
+          threadInfo.ProgressSpec->Reinit();
+          threadInfo.CompressEvent.Set();
+          threadInfo.UpdateIndex = mtItemIndex - 1;
+
+          compressingCompletedEvents.Add(threadInfo.CompressionCompletedEvent);
+          threadIndices.Add(i);
+          break;
+        }
+      }
+      continue;
+    }
+    
+    if (refs.Refs[itemIndex].Skip)
+    {
+      itemIndex++;
+      continue;
+    }
+
+    const CUpdateItem &ui = updateItems[itemIndex];
+
+    CItemEx item;
+    if (!ui.NewProperties || !ui.NewData)
+    {
+      item = inputItems[ui.IndexInArchive];
+      if (inArchive->ReadLocalItemAfterCdItemFull(item) != S_OK)
+        return E_NOTIMPL;
+    }
+
+    if (ui.NewData)
+    {
+      bool isDir = ((ui.NewProperties) ? ui.IsDir : item.IsDir());
+      if (isDir)
+      {
+        WriteDirHeader(archive, options, ui, item);
+      }
+      else
+      {
+        if (lastRealStreamItemIndex < itemIndex)
+        {
+          lastRealStreamItemIndex = itemIndex;
+          SetFileHeader(archive, *options, ui, item);
+          // file Size can be 64-bit !!!
+          archive.PrepareWriteCompressedData((UInt16)item.Name.Length(), ui.Size, options->IsAesMode);
+        }
+
+        CMemBlocks2 &memRef = refs.Refs[itemIndex];
+        if (memRef.Defined)
+        {
+          CMyComPtr<IOutStream> outStream;
+          archive.CreateStreamForCompressing(&outStream);
+          memRef.WriteToStream(memManager.GetBlockSize(), outStream);
+          SetItemInfoFromCompressingResult(memRef.CompressingResult,
+              options->IsAesMode, options->AesKeyMode, item);
+          SetFileHeader(archive, *options, ui, item);
+          archive.WriteLocalHeader(item);
+          // RINOK(updateCallback->SetOperationResult(NArchive::NUpdate::NOperationResult::kOK));
+          memRef.FreeOpt(&memManager);
+        }
+        else
+        {
+          {
+            CThreadInfo &thread = threads.Threads[threadIndices.Front()];
+            if (!thread.OutStreamSpec->WasUnlockEventSent())
+            {
+              CMyComPtr<IOutStream> outStream;
+              archive.CreateStreamForCompressing(&outStream);
+              thread.OutStreamSpec->SetOutStream(outStream);
+              thread.OutStreamSpec->SetRealStreamMode();
+            }
+          }
+
+          DWORD result = ::WaitForMultipleObjects(compressingCompletedEvents.Size(),
+              &compressingCompletedEvents.Front(), FALSE, INFINITE);
+          int t = (int)(result - WAIT_OBJECT_0);
+          CThreadInfo &threadInfo = threads.Threads[threadIndices[t]];
+          threadInfo.InStream.Release();
+          threadInfo.IsFree = true;
+          RINOK(threadInfo.Result);
+          threadIndices.Delete(t);
+          compressingCompletedEvents.Delete(t);
+          if (t == 0)
+          {
+            RINOK(threadInfo.OutStreamSpec->WriteToRealStream());
+            threadInfo.OutStreamSpec->ReleaseOutStream();
+            SetItemInfoFromCompressingResult(threadInfo.CompressingResult,
+                options->IsAesMode, options->AesKeyMode, item);
+            SetFileHeader(archive, *options, ui, item);
+            archive.WriteLocalHeader(item);
+          }
+          else
+          {
+            CMemBlocks2 &memRef = refs.Refs[threadInfo.UpdateIndex];
+            threadInfo.OutStreamSpec->DetachData(memRef);
+            memRef.CompressingResult = threadInfo.CompressingResult;
+            memRef.Defined = true;
+            continue;
+          }
+        }
+      }
+    }
+    else
+    {
+      RINOK(UpdateItemOldData(archive, inStream, ui, item, progress, complexity));
+    }
+    items.Add(item);
+    complexity += NFileHeader::kLocalBlockSize;
+    mtProgressMixerSpec->Mixer2->SetProgressOffset(complexity);
+    itemIndex++;
+  }
+  archive.WriteCentralDir(items, comment);
+  return S_OK;
+  #endif
+}
+
+static const size_t kCacheBlockSize = (1 << 20);
+static const size_t kCacheSize = (kCacheBlockSize << 2);
+static const size_t kCacheMask = (kCacheSize - 1);
+
+class CCacheOutStream:
+  public IOutStream,
+  public CMyUnknownImp
+{
+  CMyComPtr<IOutStream> _stream;
+  Byte *_cache;
+  UInt64 _virtPos;
+  UInt64 _virtSize;
+  UInt64 _phyPos;
+  UInt64 _phySize; // <= _virtSize
+  UInt64 _cachedPos; // (_cachedPos + _cachedSize) <= _virtSize
+  size_t _cachedSize;
+
+  HRESULT MyWrite(size_t size);
+  HRESULT MyWriteBlock()
+  {
+    return MyWrite(kCacheBlockSize - ((size_t)_cachedPos & (kCacheBlockSize - 1)));
+  }
+  HRESULT FlushCache();
+public:
+  CCacheOutStream(): _cache(0) {}
+  ~CCacheOutStream();
+  bool Allocate();
+  HRESULT Init(IOutStream *stream);
+  
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+  STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
+  STDMETHOD(SetSize)(UInt64 newSize);
+};
+
+bool CCacheOutStream::Allocate()
+{
+  if (!_cache)
+    _cache = (Byte *)::MidAlloc(kCacheSize);
+  return (_cache != NULL);
+}
+
+HRESULT CCacheOutStream::Init(IOutStream *stream)
+{
+  _virtPos = _phyPos = 0;
+  _stream = stream;
+  RINOK(_stream->Seek(0, STREAM_SEEK_CUR, &_virtPos));
+  RINOK(_stream->Seek(0, STREAM_SEEK_END, &_virtSize));
+  RINOK(_stream->Seek(_virtPos, STREAM_SEEK_SET, &_virtPos));
+  _phyPos = _virtPos;
+  _phySize = _virtSize;
+  _cachedPos = 0;
+  _cachedSize = 0;
+  return S_OK;
+}
+
+HRESULT CCacheOutStream::MyWrite(size_t size)
+{
+  while (size != 0 && _cachedSize != 0)
+  {
+    if (_phyPos != _cachedPos)
+    {
+      RINOK(_stream->Seek(_cachedPos, STREAM_SEEK_SET, &_phyPos));
+    }
+    size_t pos = (size_t)_cachedPos & kCacheMask;
+    size_t curSize = MyMin(kCacheSize - pos, _cachedSize);
+    curSize = MyMin(curSize, size);
+    RINOK(WriteStream(_stream, _cache + pos, curSize));
+    _phyPos += curSize;
+    if (_phySize < _phyPos)
+      _phySize = _phyPos;
+    _cachedPos += curSize;
+    _cachedSize -= curSize;
+    size -= curSize;
+  }
+  return S_OK;
+}
+
+HRESULT CCacheOutStream::FlushCache()
+{
+  return MyWrite(_cachedSize);
+}
+
+CCacheOutStream::~CCacheOutStream()
+{
+  FlushCache();
+  if (_virtSize != _phySize)
+    _stream->SetSize(_virtSize);
+  if (_virtPos != _phyPos)
+    _stream->Seek(_virtPos, STREAM_SEEK_SET, NULL);
+  ::MidFree(_cache);
+}
+
+STDMETHODIMP CCacheOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+  if (processedSize)
+    *processedSize = 0;
+  if (size == 0)
+    return S_OK;
+
+  UInt64 zerosStart = _virtPos;
+  if (_cachedSize != 0)
+  {
+    if (_virtPos < _cachedPos)
+    {
+      RINOK(FlushCache());
+    }
+    else
+    {
+      UInt64 cachedEnd = _cachedPos + _cachedSize;
+      if (cachedEnd < _virtPos)
+      {
+        if (cachedEnd < _phySize)
+        {
+          RINOK(FlushCache());
+        }
+        else
+          zerosStart = cachedEnd;
+      }
+    }
+  }
+
+  if (_cachedSize == 0 && _phySize < _virtPos)
+    _cachedPos = zerosStart = _phySize;
+
+  if (zerosStart != _virtPos)
+  {
+    // write zeros to [cachedEnd ... _virtPos)
+    
+    for (;;)
+    {
+      UInt64 cachedEnd = _cachedPos + _cachedSize;
+      size_t endPos = (size_t)cachedEnd & kCacheMask;
+      size_t curSize = kCacheSize - endPos;
+      if (curSize > _virtPos - cachedEnd)
+        curSize = (size_t)(_virtPos - cachedEnd);
+      if (curSize == 0)
+        break;
+      while (curSize > (kCacheSize - _cachedSize))
+      {
+        RINOK(MyWriteBlock());
+      }
+      memset(_cache + endPos, 0, curSize);
+      _cachedSize += curSize;
+    }
+  }
+
+  if (_cachedSize == 0)
+    _cachedPos = _virtPos;
+
+  size_t pos = (size_t)_virtPos & kCacheMask;
+  size = (UInt32)MyMin((size_t)size, kCacheSize - pos);
+  UInt64 cachedEnd = _cachedPos + _cachedSize;
+  if (_virtPos != cachedEnd) // _virtPos < cachedEnd
+    size = (UInt32)MyMin((size_t)size, (size_t)(cachedEnd - _virtPos));
+  else
+  {
+    // _virtPos == cachedEnd
+    if (_cachedSize == kCacheSize)
+    {
+      RINOK(MyWriteBlock());
+    }
+    size_t startPos = (size_t)_cachedPos & kCacheMask;
+    if (startPos > pos)
+      size = (UInt32)MyMin((size_t)size, (size_t)(startPos - pos));
+    _cachedSize += size;
+  }
+  memcpy(_cache + pos, data, size);
+  if (processedSize)
+    *processedSize = size;
+  _virtPos += size;
+  if (_virtSize < _virtPos)
+    _virtSize = _virtPos;
+  return S_OK;
+}
+
+STDMETHODIMP CCacheOutStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
+{
+  switch(seekOrigin)
+  {
+    case STREAM_SEEK_SET: _virtPos = offset; break;
+    case STREAM_SEEK_CUR: _virtPos += offset; break;
+    case STREAM_SEEK_END: _virtPos = _virtSize + offset; break;
+    default: return STG_E_INVALIDFUNCTION;
+  }
+  if (newPosition)
+    *newPosition = _virtPos;
+  return S_OK;
+}
+
+STDMETHODIMP CCacheOutStream::SetSize(UInt64 newSize)
+{
+  _virtSize = newSize;
+  if (newSize < _phySize)
+  {
+    RINOK(_stream->SetSize(newSize));
+    _phySize = newSize;
+  }
+  if (newSize <= _cachedPos)
+  {
+    _cachedSize = 0;
+    _cachedPos = newSize;
+  }
+  if (newSize < _cachedPos + _cachedSize)
+    _cachedSize = (size_t)(newSize - _cachedPos);
+  return S_OK;
+}
+
+
+HRESULT Update(
+    DECL_EXTERNAL_CODECS_LOC_VARS
+    const CObjectVector<CItemEx> &inputItems,
+    const CObjectVector<CUpdateItem> &updateItems,
+    ISequentialOutStream *seqOutStream,
+    CInArchive *inArchive,
+    CCompressionMethodMode *compressionMethodMode,
+    IArchiveUpdateCallback *updateCallback)
+{
+  CMyComPtr<IOutStream> outStream;
+  {
+    CMyComPtr<IOutStream> outStreamReal;
+    seqOutStream->QueryInterface(IID_IOutStream, (void **)&outStreamReal);
+    if (!outStreamReal)
+      return E_NOTIMPL;
+    CCacheOutStream *cacheStream = new CCacheOutStream();
+    outStream = cacheStream;
+    if (!cacheStream->Allocate())
+      return E_OUTOFMEMORY;
+    RINOK(cacheStream->Init(outStreamReal));
+  }
+
+  if (inArchive)
+  {
+    if (inArchive->ArcInfo.Base != 0 ||
+        inArchive->ArcInfo.StartPosition != 0 ||
+        !inArchive->IsOkHeaders)
+      return E_NOTIMPL;
+  }
+  
+  COutArchive outArchive;
+  outArchive.Create(outStream);
+  /*
+  if (inArchive && inArchive->ArcInfo.StartPosition > 0)
+  {
+    CMyComPtr<ISequentialInStream> inStream;
+    inStream.Attach(inArchive->CreateLimitedStream(0, inArchive->ArcInfo.StartPosition));
+    RINOK(CopyBlockToArchive(inStream, outArchive, NULL));
+    outArchive.MoveBasePosition(inArchive->ArcInfo.StartPosition);
+  }
+  */
+  CMyComPtr<IInStream> inStream;
+  if (inArchive)
+    inStream.Attach(inArchive->CreateStream());
+
+  return Update2(
+      EXTERNAL_CODECS_LOC_VARS
+      outArchive, inArchive, inStream,
+      inputItems, updateItems,
+      compressionMethodMode,
+      inArchive ? &inArchive->ArcInfo.Comment : NULL,
+      updateCallback);
+}
+
+}}