21.0621.06

21 files changed, 1027 insertions, 175 deletions

diff --git a/CPP/7zip/UI/Common/ArchiveExtractCallback.cpp b/CPP/7zip/UI/Common/ArchiveExtractCallback.cpp
index b85a0ae6..9fea6dc2 100644
--- a/CPP/7zip/UI/Common/ArchiveExtractCallback.cpp
+++ b/CPP/7zip/UI/Common/ArchiveExtractCallback.cpp
@@ -348,6 +348,8 @@ STDMETHODIMP CArchiveExtractCallback::SetRatioInfo(const UInt64 *inSize, const U
 
 void CArchiveExtractCallback::CreateComplexDirectory(const UStringVector &dirPathParts, FString &fullPath)
 {
+  // we use (_item.IsDir) in this function
+
   bool isAbsPath = false;
   
   if (!dirPathParts.IsEmpty())
@@ -375,12 +377,41 @@ void CArchiveExtractCallback::CreateComplexDirectory(const UStringVector &dirPat
       fullPath.Add_PathSepar();
     const UString &s = dirPathParts[i];
     fullPath += us2fs(s);
+
+    const bool isFinalDir = (i == dirPathParts.Size() - 1 && _item.IsDir);
+    
+    if (fullPath.IsEmpty())
+    {
+      if (isFinalDir)
+        _itemFailure = true;
+      continue;
+    }
+
     #if defined(_WIN32) && !defined(UNDER_CE)
     if (_pathMode == NExtract::NPathMode::kAbsPaths)
       if (i == 0 && s.Len() == 2 && NName::IsDrivePath2(s))
+      {
+        if (isFinalDir)
+        {
+          // we don't want to call SetAttrib() for root drive path
+          _itemFailure = true;
+        }
         continue;
+      }
     #endif
+
+    // bool res =
     CreateDir(fullPath);
+    // if (!res)
+    if (isFinalDir)
+    {
+      if (!NFile::NFind::DoesDirExist(fullPath))
+      {
+        _itemFailure = true;
+        SendMessageError("Cannot create folder", fullPath);
+        // SendMessageError_with_LastError()
+      }
+    }
   }
 }
 
@@ -655,6 +686,7 @@ HRESULT CArchiveExtractCallback::ReadLink()
 {
   IInArchive *archive = _arc->Archive;
   const UInt32 index = _index;
+  _link.Clear();
 
   {
     NCOM::CPropVariant prop;
@@ -717,7 +749,8 @@ HRESULT CArchiveExtractCallback::ReadLink()
       if (propType != NPropDataType::kRaw)
         return E_FAIL;
   
-      #ifdef _WIN32
+      // 21.06: we need kpidNtReparse in linux for wim archives created in Windows
+      // #ifdef _WIN32
 
       NtReparse_Data = data;
       NtReparse_Size = dataSize;
@@ -739,11 +772,14 @@ HRESULT CArchiveExtractCallback::ReadLink()
         else
           _link.isRelative = reparse.IsRelative_Win();
 
+        // const AString s = GetAnsiString(_link.linkPath);
+        // printf("\n_link.linkPath: %s\n", s.Ptr());
+
         #ifndef _WIN32
         _link.linkPath.Replace(L'\\', WCHAR_PATH_SEPARATOR);
         #endif
       }
-      #endif
+      // #endif
     }
   }
 
@@ -908,7 +944,10 @@ void CArchiveExtractCallback::CreateFolders()
   if (!_item.IsDir)
     return;
 
-  CDirPathTime &pt = _extractedFolders.AddNew();
+  if (_itemFailure)
+    return;
+
+  CDirPathTime pt;
   
   pt.CTime = _fi.CTime;
   pt.CTimeDefined = (WriteCTime && _fi.CTimeDefined);
@@ -931,9 +970,13 @@ void CArchiveExtractCallback::CreateFolders()
       pt.MTimeDefined = true;
     }
   }
-  
-  pt.Path = fullPathNew;
-  pt.SetDirTime();
+
+  if (pt.MTimeDefined || pt.ATimeDefined || pt.CTimeDefined)
+  {
+    pt.Path = fullPathNew;
+    pt.SetDirTime();
+    _extractedFolders.Add(pt);
+  }
 }
 
 
@@ -1125,7 +1168,11 @@ HRESULT CArchiveExtractCallback::GetExtractStream(CMyComPtr<ISequentialOutStream
     #ifdef SUPPORT_LINKS
     if (_link.linkPath.IsEmpty())
     #endif
+    {
+      if (!isAnti)
+        SetAttrib();
       return S_OK;
+    }
   }
   else if (!_isSplit)
   {
@@ -1154,6 +1201,12 @@ HRESULT CArchiveExtractCallback::GetExtractStream(CMyComPtr<ISequentialOutStream
     {
       bool linkWasSet = false;
       RINOK(SetFromLinkPath(fullProcessedPath, _link, linkWasSet));
+      if (linkWasSet)
+      {
+        _isSymLinkCreated = _link.IsSymLink();
+        SetAttrib();
+        // printf("\nlinkWasSet %s\n", GetAnsiString(_diskFilePath));
+      }
     }
     #endif // UNDER_CE
 
@@ -1186,6 +1239,9 @@ HRESULT CArchiveExtractCallback::GetExtractStream(CMyComPtr<ISequentialOutStream
             return S_OK;
           }
           
+          // printf("\nHard linkWasSet Archive_Get_HardLinkNode %s\n", GetAnsiString(_diskFilePath));
+          // _needSetAttrib = true; // do we need to set attribute ?
+          SetAttrib();
           needExit = false;
           return S_OK;
         }
@@ -1210,22 +1266,25 @@ HRESULT CArchiveExtractCallback::GetExtractStream(CMyComPtr<ISequentialOutStream
     }
   }
   
-  _fileWasExtracted = true;
+  _needSetAttrib = true;
+
+  bool is_SymLink_in_Data = false;
 
   if (_curSizeDefined && _curSize > 0 && _curSize < (1 << 12))
   {
     if (_fi.IsLinuxSymLink())
     {
-      _is_SymLink_in_Data = true;
+      is_SymLink_in_Data = true;
       _is_SymLink_in_Data_Linux = true;
     }
     else if (_fi.IsReparse())
     {
-      _is_SymLink_in_Data = true;
+      is_SymLink_in_Data = true;
       _is_SymLink_in_Data_Linux = false;
     }
   }
-  if (_is_SymLink_in_Data)
+
+  if (is_SymLink_in_Data)
   {
     _outMemBuf.Alloc((size_t)_curSize);
     _bufPtrSeqOutStream_Spec = new CBufPtrSeqOutStream;
@@ -1347,17 +1406,36 @@ STDMETHODIMP CArchiveExtractCallback::GetStream(UInt32 index, ISequentialOutStre
   _diskFilePath.Empty();
 
   _isRenamed = false;
+  
   // _fi.Clear();
-  _is_SymLink_in_Data = false;
-  _is_SymLink_in_Data_Linux = false;
 
-  _fileWasExtracted = false;
+  // _is_SymLink_in_Data = false;
+  _is_SymLink_in_Data_Linux = false;
+  
+  _needSetAttrib = false;
+  _isSymLinkCreated = false;
+  _itemFailure = false;
 
   #ifdef SUPPORT_LINKS
   // _CopyFile_Path.Empty();
   _link.Clear();
   #endif
 
+  _extractMode = false;
+
+  switch (askExtractMode)
+  {
+    case NArchive::NExtract::NAskMode::kExtract:
+      if (_testMode)
+      {
+        // askExtractMode = NArchive::NExtract::NAskMode::kTest;
+      }
+      else
+        _extractMode = true;
+      break;
+  };
+
+
   IInArchive *archive = _arc->Archive;
 
   RINOK(GetItem(index));
@@ -1832,6 +1910,7 @@ HRESULT CArchiveExtractCallback::SetFromLinkPath(
 
 bool CLinkInfo::Parse(const Byte *data, size_t dataSize, bool isLinuxData)
 {
+  Clear();
   // this->isLinux = isLinuxData;
   
   if (isLinuxData)
@@ -1955,10 +2034,20 @@ HRESULT CArchiveExtractCallback::CloseReparseAndFile()
         RINOK(SendMessageError_with_LastError("can't delete file", _diskFilePath));
       }
       {
+        /*
+        // for DEBUG ONLY: we can extract sym links as WSL links
+        // to elimanate (non-admin) errors for sym links.
+        #ifdef _WIN32
+        if (!linkInfo.isHardLink && !linkInfo.isJunction)
+          linkInfo.isWSL = true;
+        #endif
+        */
         bool linkWasSet = false;
         RINOK(SetFromLinkPath(_diskFilePath, linkInfo, linkWasSet));
-        if (!linkWasSet)
-          _fileWasExtracted = false;
+        if (linkWasSet)
+          _isSymLinkCreated = linkInfo.IsSymLink();
+        else
+          _needSetAttrib = false;
       }
       /*
       if (!NFile::NIO::SetReparseData(_diskFilePath, _item.IsDir, ))
@@ -1974,11 +2063,40 @@ HRESULT CArchiveExtractCallback::CloseReparseAndFile()
 }
 
 
+void CArchiveExtractCallback::SetAttrib()
+{
+  #ifndef _WIN32
+  // Linux now doesn't support permissions for symlinks
+  if (_isSymLinkCreated)
+    return;
+  #endif
+
+  if (_itemFailure
+      || _diskFilePath.IsEmpty()
+      || _stdOutMode
+      || !_extractMode
+      || !_fi.AttribDefined)
+    return;
+  
+  {
+    // const AString s = GetAnsiString(_diskFilePath);
+    // printf("\nSetFileAttrib_PosixHighDetect: %s: hex:%x\n", s.Ptr(), _fi.Attrib);
+    bool res = SetFileAttrib_PosixHighDetect(_diskFilePath, _fi.Attrib);
+    if (!res)
+    {
+      // do we need error message here in Windows and in posix?
+      SendMessageError_with_LastError("Cannot set file attribute", _diskFilePath);
+    }
+  }
+}
+
 
 STDMETHODIMP CArchiveExtractCallback::SetOperationResult(Int32 opRes)
 {
   COM_TRY_BEGIN
 
+  // printf("\nCArchiveExtractCallback::SetOperationResult: %d %s\n", opRes, GetAnsiString(_diskFilePath));
+
   #ifndef _SFX
   if (ExtractToStreamCallback)
   {
@@ -2052,16 +2170,8 @@ STDMETHODIMP CArchiveExtractCallback::SetOperationResult(Int32 opRes)
   else
     NumFiles++;
 
-  if (_fileWasExtracted)
-  if (!_stdOutMode && _extractMode && _fi.AttribDefined)
-  {
-    bool res = SetFileAttrib_PosixHighDetect(_diskFilePath, _fi.Attrib);
-    if (!res)
-    {
-      // do we need error message here in Windows and in posix?
-      SendMessageError_with_LastError("Cannot set file attribute", _diskFilePath);
-    }
-  }
+  if (_needSetAttrib)
+    SetAttrib();
   
   RINOK(_extractCallback2->SetOperationResult(opRes, BoolToInt(_encrypted)));
   
diff --git a/CPP/7zip/UI/Common/ArchiveExtractCallback.h b/CPP/7zip/UI/Common/ArchiveExtractCallback.h
index e44801de..fe9cb32e 100644
--- a/CPP/7zip/UI/Common/ArchiveExtractCallback.h
+++ b/CPP/7zip/UI/Common/ArchiveExtractCallback.h
@@ -189,7 +189,17 @@ struct CLinkInfo
   bool isRelative;
   bool isWSL;
   UString linkPath;
-  
+
+  bool IsSymLink() const { return !isHardLink; }
+
+  CLinkInfo():
+    // IsCopyLink(false),
+    isHardLink(false),
+    isJunction(false),
+    isRelative(false),
+    isWSL(false)
+    {}
+
   void Clear()
   {
     // IsCopyLink = false;
@@ -291,10 +301,12 @@ class CArchiveExtractCallback:
     }
   } _fi;
 
-  bool _is_SymLink_in_Data;
+  // bool _is_SymLink_in_Data;
   bool _is_SymLink_in_Data_Linux; // false = WIN32, true = LINUX
 
-  bool _fileWasExtracted;
+  bool _needSetAttrib;
+  bool _isSymLinkCreated;
+  bool _itemFailure;
 
   UInt32 _index;
   UInt64 _curSize;
@@ -352,6 +364,8 @@ class CArchiveExtractCallback:
 
   FString Hash_GetFullFilePath();
 
+  void SetAttrib();
+
 public:
   HRESULT SendMessageError(const char *message, const FString &path);
   HRESULT SendMessageError_with_LastError(const char *message, const FString &path);
diff --git a/CPP/7zip/UI/Common/DirItem.h b/CPP/7zip/UI/Common/DirItem.h
index 55b2872c..e5f578dd 100644
--- a/CPP/7zip/UI/Common/DirItem.h
+++ b/CPP/7zip/UI/Common/DirItem.h
@@ -118,7 +118,9 @@ struct CDirItem
   UInt32 GetPosixAttrib() const
   {
     UInt32 v = IsDir() ? MY_LIN_S_IFDIR : MY_LIN_S_IFREG;
-    v |= (IsReadOnly() ? 0555 : 0777);
+    /* 21.06: as WSL we allow write permissions (0222) for directories even for (FILE_ATTRIBUTE_READONLY).
+       So extracting at Linux will be allowed to write files inside (0777) directories. */
+    v |= ((IsReadOnly() && !IsDir()) ? 0555 : 0777);
     return v;
   }
   #endif
diff --git a/CPP/7zip/UI/Common/ZipRegistry.cpp b/CPP/7zip/UI/Common/ZipRegistry.cpp
index 558a159c..ab4871fb 100644
--- a/CPP/7zip/UI/Common/ZipRegistry.cpp
+++ b/CPP/7zip/UI/Common/ZipRegistry.cpp
@@ -2,7 +2,10 @@
 
 #include "StdAfx.h"
 
+#include "../../../../C/CpuArch.h"
+
 #include "../../../Common/IntToString.h"
+#include "../../../Common/StringToInt.h"
 
 #include "../../../Windows/FileDir.h"
 #include "../../../Windows/Registry.h"
@@ -195,6 +198,13 @@ static void GetRegUInt32(CKey &key, LPCTSTR name, UInt32 &value)
     value = (UInt32)(Int32)-1;
 }
 
+static LPCWSTR const kMemUse = L"MemUse"
+    #if defined(MY_CPU_SIZEOF_POINTER) && (MY_CPU_SIZEOF_POINTER == 4)
+      L"32";
+    #else
+      L"64";
+    #endif
+
 void CInfo::Save() const
 {
   CS_LOCK
@@ -234,6 +244,7 @@ void CInfo::Save() const
       SetRegString(fk, kMethod, fo.Method);
       SetRegString(fk, kOptions, fo.Options);
       SetRegString(fk, kEncryptionMethod, fo.EncryptionMethod);
+      SetRegString(fk, kMemUse, fo.MemUse);
     }
   }
 }
@@ -274,9 +285,10 @@ void CInfo::Load()
         fo.FormatID = formatIDs[i];
         if (fk.Open(optionsKey, fo.FormatID, KEY_READ) == ERROR_SUCCESS)
         {
-          GetRegString(fk, kOptions, fo.Options);
           GetRegString(fk, kMethod, fo.Method);
+          GetRegString(fk, kOptions, fo.Options);
           GetRegString(fk, kEncryptionMethod, fo.EncryptionMethod);
+          GetRegString(fk, kMemUse, fo.MemUse);
 
           GetRegUInt32(fk, kLevel, fo.Level);
           GetRegUInt32(fk, kDictionary, fo.Dictionary);
@@ -298,6 +310,116 @@ void CInfo::Load()
   key.GetValue_IfOk(kEncryptHeaders, EncryptHeaders);
 }
 
+
+static bool ParseMemUse(const wchar_t *s, CMemUse &mu)
+{
+  mu.Clear();
+
+  bool percentMode = false;
+  {
+    const wchar_t c = *s;
+    if (MyCharLower_Ascii(c) == 'p')
+    {
+      percentMode = true;
+      s++;
+    }
+  }
+  const wchar_t *end;
+  UInt64 number = ConvertStringToUInt64(s, &end);
+  if (end == s)
+    return false;
+  
+  wchar_t c = *end;
+
+  if (percentMode)
+  {
+    if (c != 0)
+      return false;
+    mu.IsPercent = true;
+    mu.Val = number;
+    return true;
+  }
+
+  if (c == 0)
+  {
+    mu.Val = number;
+    return true;
+  }
+
+  c = MyCharLower_Ascii(c);
+
+  const wchar_t c1 = end[1];
+  
+  if (c == '%')
+  {
+    if (c1 != 0)
+      return false;
+    mu.IsPercent = true;
+    mu.Val = number;
+    return true;
+  }
+
+  if (c == 'b')
+  {
+    if (c1 != 0)
+      return false;
+    mu.Val = number;
+    return true;
+  }
+  
+  if (c1 != 0)
+    if (MyCharLower_Ascii(c1) != 'b' || end[2] != 0)
+      return false;
+  
+  unsigned numBits;
+  switch (c)
+  {
+    case 'k': numBits = 10; break;
+    case 'm': numBits = 20; break;
+    case 'g': numBits = 30; break;
+    case 't': numBits = 40; break;
+    default: return false;
+  }
+  if (number >= ((UInt64)1 << (64 - numBits)))
+    return false;
+  mu.Val = number << numBits;
+  return true;
+}
+
+
+void CMemUse::Parse(const UString &s)
+{
+  IsDefined = ParseMemUse(s, *this);
+}
+
+/*
+void MemLimit_Save(const UString &s)
+{
+  CS_LOCK
+  CKey key;
+  CreateMainKey(key, kKeyName);
+  SetRegString(key, kMemUse, s);
+}
+
+bool MemLimit_Load(NCompression::CMemUse &mu)
+{
+  mu.Clear();
+  UString a;
+  {
+    CS_LOCK
+    CKey key;
+    if (OpenMainKey(key, kKeyName) != ERROR_SUCCESS)
+      return false;
+    if (key.QueryValue(kMemUse, a) != ERROR_SUCCESS)
+      return false;
+  }
+  if (a.IsEmpty())
+    return false;
+  mu.Parse(a);
+  return mu.IsDefined;
+}
+*/
+
 }
 
 static LPCTSTR const kOptionsInfoKeyName = TEXT("Options");
diff --git a/CPP/7zip/UI/Common/ZipRegistry.h b/CPP/7zip/UI/Common/ZipRegistry.h
index 76a98447..3d2e4b98 100644
--- a/CPP/7zip/UI/Common/ZipRegistry.h
+++ b/CPP/7zip/UI/Common/ZipRegistry.h
@@ -6,6 +6,8 @@
 #include "../../../Common/MyTypes.h"
 #include "../../../Common/MyString.h"
 
+#include "../../Common/MethodProps.h"
+
 #include "ExtractMode.h"
 
 namespace NExtract
@@ -35,6 +37,36 @@ namespace NExtract
 
 namespace NCompression
 {
+  struct CMemUse
+  {
+    // UString Str;
+    bool IsDefined;
+    bool IsPercent;
+    UInt64 Val;
+
+    CMemUse():
+      IsDefined(false),
+      IsPercent(false),
+      Val(0)
+      {}
+
+    void Clear()
+    {
+      // Str.Empty();
+      IsDefined = false;
+      IsPercent = false;
+      Val = 0;
+    }
+
+    UInt64 GetBytes(UInt64 ramSize) const
+    {
+      if (!IsPercent)
+        return Val;
+      return Calc_From_Val_Percents(ramSize, Val);
+    }
+    void Parse(const UString &s);
+  };
+
   struct CFormatOptions
   {
     UInt32 Level;
@@ -47,6 +79,7 @@ namespace NCompression
     UString Method;
     UString Options;
     UString EncryptionMethod;
+    UString MemUse;
 
     void Reset_BlockLogSize()
     {
diff --git a/CPP/7zip/UI/FileManager/App.h b/CPP/7zip/UI/FileManager/App.h
index 21b160dc..3c3c5ef2 100644
--- a/CPP/7zip/UI/FileManager/App.h
+++ b/CPP/7zip/UI/FileManager/App.h
@@ -18,8 +18,9 @@ const unsigned kNumPanelsMax = 2;
 
 extern bool g_IsSmallScreen;
 
-const int kMenuCmdID_Plugin_Start = 1000; // must be large them context menu IDs
-const int kMenuCmdID_Toolbar_Start = 1500;
+// must be larger than context menu IDs
+const int kMenuCmdID_Toolbar_Start = 1070;
+const int kMenuCmdID_Plugin_Start = 1100;
 
 enum
 {
diff --git a/CPP/7zip/UI/FileManager/PanelMenu.cpp b/CPP/7zip/UI/FileManager/PanelMenu.cpp
index 99a76cfa..1a09a8f6 100644
--- a/CPP/7zip/UI/FileManager/PanelMenu.cpp
+++ b/CPP/7zip/UI/FileManager/PanelMenu.cpp
@@ -30,7 +30,7 @@ LONG g_DllRefCount;
 LONG g_DllRefCount = 0;
 
 static const UINT kSevenZipStartMenuID = kMenuCmdID_Plugin_Start;
-static const UINT kSystemStartMenuID = kMenuCmdID_Plugin_Start + 100;
+static const UINT kSystemStartMenuID = kMenuCmdID_Plugin_Start + 400;
 
 void CPanel::InvokeSystemCommand(const char *command)
 {
@@ -993,11 +993,19 @@ bool CPanel::InvokePluginCommand(unsigned id,
     IContextMenu *sevenZipContextMenu, IContextMenu *systemContextMenu)
 {
   UInt32 offset;
-  bool isSystemMenu = (id >= kSystemStartMenuID);
+  const bool isSystemMenu = (id >= kSystemStartMenuID);
   if (isSystemMenu)
+  {
+    if (!systemContextMenu)
+      return false;
     offset = id - kSystemStartMenuID;
+  }
   else
+  {
+    if (!sevenZipContextMenu)
+      return false;
     offset = id - kSevenZipStartMenuID;
+  }
 
   #ifdef use_CMINVOKECOMMANDINFOEX
     CMINVOKECOMMANDINFOEX
diff --git a/CPP/7zip/UI/FileManager/SettingsPage.cpp b/CPP/7zip/UI/FileManager/SettingsPage.cpp
index bdd62f71..28687217 100644
--- a/CPP/7zip/UI/FileManager/SettingsPage.cpp
+++ b/CPP/7zip/UI/FileManager/SettingsPage.cpp
@@ -2,17 +2,20 @@
 
 #include "StdAfx.h"
 
-#include "../../../Common/StringConvert.h"
+// #include "../../../Common/IntToString.h"
+// #include "../../../Common/StringConvert.h"
 
 #ifndef UNDER_CE
 #include "../../../Windows/MemoryLock.h"
+// #include "../../../Windows/System.h"
 #endif
 
+// #include "../Common/ZipRegistry.h"
+
 #include "HelpUtils.h"
 #include "LangUtils.h"
 #include "RegistryUtils.h"
 #include "SettingsPage.h"
-
 #include "SettingsPageRes.h"
 
 using namespace NWindows;
@@ -27,16 +30,87 @@ static const UInt32 kLangIDs[] =
   IDX_SETTINGS_SINGLE_CLICK,
   IDX_SETTINGS_ALTERNATIVE_SELECTION,
   IDX_SETTINGS_LARGE_PAGES
+  // , IDT_COMPRESS_MEMORY
 };
 
 #define kSettingsTopic "FM/options.htm#settings"
 
 extern bool IsLargePageSupported();
 
+/*
+static void AddMemSize(UString &res, UInt64 size, bool needRound = false)
+{
+  char c;
+  unsigned moveBits = 0;
+  if (needRound)
+  {
+    UInt64 rn = 0;
+    if (size >= (1 << 31))
+      rn = (1 << 28) - 1;
+    UInt32 kRound = (1 << 20) - 1;
+    if (rn < kRound)
+      rn = kRound;
+    size += rn;
+    size &= ~rn;
+  }
+  if (size >= ((UInt64)1 << 31) && (size & 0x3FFFFFFF) == 0)
+    { moveBits = 30; c = 'G'; }
+  else
+    { moveBits = 20; c = 'M'; }
+  res.Add_UInt64(size >> moveBits);
+  res.Add_Space();
+  if (moveBits != 0)
+    res += c;
+  res += 'B';
+}
+
+
+int CSettingsPage::AddMemComboItem(UInt64 size, UInt64 percents, bool isDefault)
+{
+  UString sUser;
+  UString sRegistry;
+  if (size == 0)
+  {
+    UString s;
+    s.Add_UInt64(percents);
+    s += '%';
+    if (isDefault)
+      sUser = "* ";
+    else
+      sRegistry = s;
+    sUser += s;
+  }
+  else
+  {
+    AddMemSize(sUser, size);
+    sRegistry = sUser;
+    for (;;)
+    {
+      int pos = sRegistry.Find(L' ');
+      if (pos < 0)
+        break;
+      sRegistry.Delete(pos);
+    }
+    if (!sRegistry.IsEmpty())
+      if (sRegistry.Back() == 'B')
+        sRegistry.DeleteBack();
+  }
+  const int index = (int)_memCombo.AddString(sUser);
+  _memCombo.SetItemData(index, _memLimitStrings.Size());
+  _memLimitStrings.Add(sRegistry);
+  return index;
+}
+*/
+
 bool CSettingsPage::OnInit()
 {
   _wasChanged = false;
   _largePages_wasChanged = false;
+  /*
+  _wasChanged_MemLimit = false;
+  _memLimitStrings.Clear();
+  _memCombo.Attach(GetItem(IDC_SETTINGS_MEM));
+  */
 
   LangSetDlgItems(*this, kLangIDs, ARRAY_SIZE(kLangIDs));
 
@@ -57,6 +131,55 @@ bool CSettingsPage::OnInit()
     CheckButton(IDX_SETTINGS_LARGE_PAGES, ReadLockMemoryEnable());
   else
     EnableItem(IDX_SETTINGS_LARGE_PAGES, false);
+
+
+  /*
+  NCompression::CMemUse mu;
+  bool needSetCur = NCompression::MemLimit_Load(mu);
+  UInt64 curMemLimit;
+  {
+    AddMemComboItem(0, 90, true);
+    _memCombo.SetCurSel(0);
+  }
+  if (mu.IsPercent)
+  {
+    const int index = AddMemComboItem(0, mu.Val);
+    _memCombo.SetCurSel(index);
+    needSetCur = false;
+  }
+  {
+    _ramSize = (UInt64)(sizeof(size_t)) << 29;
+    _ramSize_Defined = NSystem::GetRamSize(_ramSize);
+    UString s;
+    if (_ramSize_Defined)
+    {
+      s += "/ ";
+      AddMemSize(s, _ramSize, true);
+    }
+    SetItemText(IDT_SETTINGS_MEM_RAM, s);
+
+    curMemLimit = mu.GetBytes(_ramSize);
+
+    // size = 100 << 20; // for debug only;
+    for (unsigned i = (27) * 2;; i++)
+    {
+      UInt64 size = (UInt64)(2 + (i & 1)) << (i / 2);
+      if (i > (20 + sizeof(size_t) * 3 * 1 - 1) * 2)
+        size = (UInt64)(Int64)-1;
+      if (needSetCur && (size >= curMemLimit))
+      {
+        const int index = AddMemComboItem(curMemLimit);
+        _memCombo.SetCurSel(index);
+        needSetCur = false;
+        if (size == curMemLimit)
+          continue;
+      }
+      if (size == (UInt64)(Int64)-1)
+        break;
+      AddMemComboItem(size);
+    }
+  }
+  */
   
   // EnableSubItems();
 
@@ -70,6 +193,14 @@ void CSettingsPage::EnableSubItems()
 }
 */
 
+/*
+static void AddSize_MB(UString &s, UInt64 size)
+{
+  s.Add_UInt64((size + (1 << 20) - 1) >> 20);
+  s += " MB";
+}
+*/
+
 LONG CSettingsPage::OnApply()
 {
   if (_wasChanged)
@@ -86,10 +217,9 @@ LONG CSettingsPage::OnApply()
     st.ShowSystemMenu = IsButtonCheckedBool(IDX_SETTINGS_SHOW_SYSTEM_MENU);
 
     st.Save();
-    
     _wasChanged = false;
   }
-  
+
   #ifndef UNDER_CE
   if (_largePages_wasChanged)
   {
@@ -102,7 +232,66 @@ LONG CSettingsPage::OnApply()
     _largePages_wasChanged = false;
   }
   #endif
-  
+
+  /*
+  if (_wasChanged_MemLimit)
+  {
+    const unsigned index = (int)_memCombo.GetItemData_of_CurSel();
+    const UString str = _memLimitStrings[index];
+
+    bool needSave = true;
+    
+    NCompression::CMemUse mu;
+
+    if (_ramSize_Defined)
+      mu.Parse(str);
+    if (mu.IsDefined)
+    {
+      const UInt64 usage64 = mu.GetBytes(_ramSize);
+      if (_ramSize <= usage64)
+      {
+        UString s2 = LangString(IDT_COMPRESS_MEMORY);
+        if (s2.IsEmpty())
+          GetItemText(IDT_COMPRESS_MEMORY, s2);
+        UString s;
+        
+        s += "The selected value is not safe for system performance.";
+        s.Add_LF();
+        s += "The memory consumption for compression operation will exceed RAM size.";
+        s.Add_LF();
+        s.Add_LF();
+        AddSize_MB(s, usage64);
+        
+        if (!s2.IsEmpty())
+        {
+          s += " : ";
+          s += s2;
+        }
+        
+        s.Add_LF();
+        AddSize_MB(s, _ramSize);
+        s += " : RAM";
+        
+        s.Add_LF();
+        s.Add_LF();
+        s += "Are you sure you want set that unsafe value for memory usage?";
+        
+        int res = MessageBoxW(*this, s, L"7-Zip", MB_YESNOCANCEL | MB_ICONQUESTION);
+        if (res != IDYES)
+          needSave = false;
+      }
+    }
+
+    if (needSave)
+    {
+      NCompression::MemLimit_Save(str);
+      _wasChanged_MemLimit = false;
+    }
+    else
+      return PSNRET_INVALID_NOCHANGEPAGE;
+  }
+  */
+    
   return PSNRET_NOERROR;
 }
 
@@ -111,6 +300,25 @@ void CSettingsPage::OnNotifyHelp()
   ShowHelpWindow(kSettingsTopic);
 }
 
+/*
+bool CSettingsPage::OnCommand(int code, int itemID, LPARAM param)
+{
+  if (code == CBN_SELCHANGE)
+  {
+    switch (itemID)
+    {
+      case IDC_SETTINGS_MEM:
+      {
+        _wasChanged_MemLimit = true;
+        Changed();
+        break;
+      }
+    }
+  }
+  return CPropertyPage::OnCommand(code, itemID, param);
+}
+*/
+
 bool CSettingsPage::OnButtonClicked(int buttonID, HWND buttonHWND)
 {
   switch (buttonID)
diff --git a/CPP/7zip/UI/FileManager/SettingsPage.h b/CPP/7zip/UI/FileManager/SettingsPage.h
index 77cc67b9..f3f57a4b 100644
--- a/CPP/7zip/UI/FileManager/SettingsPage.h
+++ b/CPP/7zip/UI/FileManager/SettingsPage.h
@@ -4,20 +4,30 @@
 #define __SETTINGS_PAGE_H
 
 #include "../../../Windows/Control/PropertyPage.h"
+#include "../../../Windows/Control/ComboBox.h"
 #include "../../../Windows/Control/Edit.h"
 
 class CSettingsPage: public NWindows::NControl::CPropertyPage
 {
   bool _wasChanged;
-
   bool _largePages_wasChanged;
+  /*
+  bool _wasChanged_MemLimit;
+  NWindows::NControl::CComboBox _memCombo;
+  UStringVector _memLimitStrings;
+  UInt64 _ramSize;
+  UInt64 _ramSize_Defined;
+ 
+  int AddMemComboItem(UInt64 size, UInt64 percents = 0, bool isDefault = false);
+  */
 
   // void EnableSubItems();
+  // bool OnCommand(int code, int itemID, LPARAM param);
   bool OnButtonClicked(int buttonID, HWND buttonHWND);
-public:
   virtual bool OnInit();
   virtual void OnNotifyHelp();
   virtual LONG OnApply();
+public:
 };
 
 #endif
diff --git a/CPP/7zip/UI/FileManager/SettingsPage.rc b/CPP/7zip/UI/FileManager/SettingsPage.rc
index c724fcb7..baab484a 100644
--- a/CPP/7zip/UI/FileManager/SettingsPage.rc
+++ b/CPP/7zip/UI/FileManager/SettingsPage.rc
@@ -2,7 +2,7 @@
 #include "../../GuiCommon.rc"
 
 #define xc 240
-#define yc 120
+#define yc 250
 
 IDD_SETTINGS  MY_PAGE
 #include "SettingsPage2.rc"
diff --git a/CPP/7zip/UI/FileManager/SettingsPage2.rc b/CPP/7zip/UI/FileManager/SettingsPage2.rc
index 277f45d5..cf907420 100644
--- a/CPP/7zip/UI/FileManager/SettingsPage2.rc
+++ b/CPP/7zip/UI/FileManager/SettingsPage2.rc
@@ -1,3 +1,5 @@
+// #define g1xs 60
+
 CAPTION "Settings"
 BEGIN 
   CONTROL  "Show "".."" item",      IDX_SETTINGS_SHOW_DOTS,            MY_CHECKBOX, m,  8, xc, 10
@@ -10,4 +12,8 @@ BEGIN
   CONTROL  "Show system &menu",     IDX_SETTINGS_SHOW_SYSTEM_MENU,     MY_CHECKBOX, m, 100, xc, 10
 
   CONTROL  "Use &large memory pages", IDX_SETTINGS_LARGE_PAGES,        MY_CHECKBOX, m, 122, xc, 10
+
+  // LTEXT     "Memory usage for Compressing:", IDT_COMPRESS_MEMORY, m, 140, xc, 8
+  // COMBOBOX  IDC_SETTINGS_MEM, m , 152, g1xs, yc - 152, MY_COMBO
+  // LTEXT     "/ RAM", IDT_SETTINGS_MEM_RAM, m + g1xs + m, 154, xc - g1xs - m, MY_TEXT_NOPREFIX
 END
diff --git a/CPP/7zip/UI/FileManager/SettingsPageRes.h b/CPP/7zip/UI/FileManager/SettingsPageRes.h
index 71204597..e990babc 100644
--- a/CPP/7zip/UI/FileManager/SettingsPageRes.h
+++ b/CPP/7zip/UI/FileManager/SettingsPageRes.h
@@ -9,3 +9,9 @@
 #define IDX_SETTINGS_SINGLE_CLICK           2506
 #define IDX_SETTINGS_ALTERNATIVE_SELECTION  2507
 #define IDX_SETTINGS_LARGE_PAGES            2508
+
+
+// #define IDT_SETTINGS_MEM     100
+// #define IDC_SETTINGS_MEM     101
+// #define IDT_SETTINGS_MEM_RAM 102
+// #define IDT_COMPRESS_MEMORY  4017
diff --git a/CPP/7zip/UI/FileManager/VerCtrl.cpp b/CPP/7zip/UI/FileManager/VerCtrl.cpp
index 7e53d81f..3eea3942 100644
--- a/CPP/7zip/UI/FileManager/VerCtrl.cpp
+++ b/CPP/7zip/UI/FileManager/VerCtrl.cpp
@@ -126,6 +126,18 @@ static void WriteFile(const FString &path, bool createAlways, const CFileDataInf
 }
 
 
+static UInt64 FILETIME_to_UInt64(const FILETIME &ft)
+{
+  return ft.dwLowDateTime | ((UInt64)ft.dwHighDateTime << 32);
+}
+
+static void UInt64_TO_FILETIME(UInt64 v, FILETIME &ft)
+{
+  ft.dwLowDateTime = (DWORD)v;
+  ft.dwHighDateTime = (DWORD)(v >> 32);
+}
+
+
 void CApp::VerCtrl(unsigned id)
 {
   const CPanel &panel = GetFocusedPanel();
@@ -297,6 +309,55 @@ void CApp::VerCtrl(unsigned id)
         return;
       }
     }
+
+    const UInt64 timeStampOriginal = FILETIME_to_UInt64(fdi.Info.ftLastWriteTime);
+    UInt64 timeStamp2 = 0;
+    if (fdi2.IsOpen)
+      timeStamp2 = FILETIME_to_UInt64(fdi2.Info.ftLastWriteTime);
+
+    if (timeStampOriginal > timeStamp2)
+    {
+      const UInt64 k_Ntfs_prec = 10000000;
+      UInt64 timeStamp = timeStampOriginal;
+      const UInt32 k_precs[] = { 60 * 60, 60, 2, 1 };
+      for (unsigned i = 0; i < ARRAY_SIZE(k_precs); i++)
+      {
+        timeStamp = timeStampOriginal;
+        const UInt64 prec = k_Ntfs_prec * k_precs[i];
+        // timeStamp += prec - 1; // for rounding up
+        timeStamp /= prec;
+        timeStamp *= prec;
+        if (timeStamp > timeStamp2)
+          break;
+      }
+
+      if (timeStamp != timeStampOriginal
+          && timeStamp > timeStamp2)
+      {
+        FILETIME mTime;
+        UInt64_TO_FILETIME(timeStamp, mTime);
+        // NDir::SetFileAttrib(path, 0);
+        {
+          NIO::COutFile outFile;
+          if (!outFile.Open(path, OPEN_EXISTING))
+          {
+            panel.MessageBox_LastError();
+            return;
+            // if (::GetLastError() != ERROR_SUCCESS)
+            // throw "open error";
+          }
+          else
+          {
+            const UInt64 cTime = FILETIME_to_UInt64(fdi.Info.ftCreationTime);
+            if (cTime > timeStamp)
+              outFile.SetTime(&mTime, NULL, &mTime);
+            else
+              outFile.SetMTime(&mTime);
+          }
+        }
+      }
+    }
+
     if (!SetFileAttrib(path, fdi.Info.dwFileAttributes | FILE_ATTRIBUTE_READONLY))
     {
       panel.MessageBox_LastError();
diff --git a/CPP/7zip/UI/GUI/BenchmarkDialog.cpp b/CPP/7zip/UI/GUI/BenchmarkDialog.cpp
index 41e0927d..44d25035 100644
--- a/CPP/7zip/UI/GUI/BenchmarkDialog.cpp
+++ b/CPP/7zip/UI/GUI/BenchmarkDialog.cpp
@@ -733,9 +733,7 @@ void CBenchmarkDialog::SetItemText_Number(int itemID, UInt64 val, LPCTSTR post)
 
 static void AddSize_MB(UString &s, UInt64 size)
 {
-  char temp[32];
-  ConvertUInt64ToString((size + (1 << 20) - 1) >> 20, temp);
-  s += temp;
+  s.Add_UInt64((size + (1 << 20) - 1) >> 20);
   s += kMB;
 }
 
@@ -1555,16 +1553,13 @@ HRESULT CFreqCallback::AddCpuFreq(unsigned numThreads, UInt64 freq, UInt64 usage
       s.Add_LF();
     }
     s += " ";
-    char temp[64];
     if (numThreads != 1)
     {
-      ConvertUInt64ToString(GetUsagePercents(usage), temp);
-      s += temp;
+      s.Add_UInt64(GetUsagePercents(usage));
       s += '%';
       s.Add_Space();
     }
-    ConvertUInt64ToString(GetMips(freq), temp);
-    s += temp;
+    s.Add_UInt64(GetMips(freq));
     // BenchmarkDialog->Sync.sd.NeedPrint_Freq = true;
     res = sync.Exit ? E_ABORT : S_OK;
   }
diff --git a/CPP/7zip/UI/GUI/CompressDialog.cpp b/CPP/7zip/UI/GUI/CompressDialog.cpp
index 510d1ec3..0ede8292 100644
--- a/CPP/7zip/UI/GUI/CompressDialog.cpp
+++ b/CPP/7zip/UI/GUI/CompressDialog.cpp
@@ -11,6 +11,8 @@
 #include "../../../Windows/FileName.h"
 #include "../../../Windows/System.h"
 
+#include "../../Common/MethodProps.h"
+
 #include "../FileManager/BrowseDialog.h"
 #include "../FileManager/FormatUtils.h"
 #include "../FileManager/HelpUtils.h"
@@ -192,19 +194,30 @@ static const EMethodID g_HashMethods[] =
   // , kCrc64
 };
 
+static const UInt32 kFF_Filter      = 1 << 0;
+static const UInt32 kFF_Solid       = 1 << 1;
+static const UInt32 kFF_MultiThread = 1 << 2;
+static const UInt32 kFF_Encrypt     = 1 << 3;
+static const UInt32 kFF_EncryptFileNames  = 1 << 4;
+static const UInt32 kFF_MemUse      = 1 << 5;
+static const UInt32 kFF_SFX         = 1 << 6;
+
 struct CFormatInfo
 {
   LPCSTR Name;
   UInt32 LevelsMask;
   unsigned NumMethods;
   const EMethodID *MethodIDs;
-  bool Filter;
-  bool Solid;
-  bool MultiThread;
-  bool SFX;
-  
-  bool Encrypt;
-  bool EncryptFileNames;
+
+  UInt32 Flags;
+
+  bool Filter_() const { return (Flags & kFF_Filter) != 0; }
+  bool Solid_() const { return (Flags & kFF_Solid) != 0; }
+  bool MultiThread_() const { return (Flags & kFF_MultiThread) != 0; }
+  bool Encrypt_() const { return (Flags & kFF_Encrypt) != 0; }
+  bool EncryptFileNames_() const { return (Flags & kFF_EncryptFileNames) != 0; }
+  bool MemUse_() const { return (Flags & kFF_MemUse) != 0; }
+  bool SFX_() const { return (Flags & kFF_SFX) != 0; }
 };
 
 #define METHODS_PAIR(x) ARRAY_SIZE(x), x
@@ -216,62 +229,63 @@ static const CFormatInfo g_Formats[] =
     // (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     ((UInt32)1 << 10) - 1,
     // (UInt32)(Int32)-1,
-    0, 0,
-    false, false, true, false, false, false
+    0, NULL,
+    kFF_MultiThread | kFF_MemUse
   },
   {
     k7zFormat,
     (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_7zMethods),
-    true, true, true, true, true, true
+    kFF_Filter | kFF_Solid | kFF_MultiThread | kFF_Encrypt |
+    kFF_EncryptFileNames | kFF_MemUse | kFF_SFX
   },
   {
     "Zip",
     (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_ZipMethods),
-    false, false, true, false, true, false
+    kFF_MultiThread | kFF_Encrypt | kFF_MemUse
   },
   {
     "GZip",
     (1 << 1) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_GZipMethods),
-    false, false, false, false, false, false
+    kFF_MemUse
   },
   {
     "BZip2",
     (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_BZip2Methods),
-    false, false, true, false, false, false
+    kFF_MultiThread | kFF_MemUse
   },
   {
     "xz",
     (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_XzMethods),
-    false, true, true, false, false, false
+    kFF_Solid | kFF_MultiThread | kFF_MemUse
   },
   {
     "Swfc",
     (1 << 1) | (1 << 3) | (1 << 5) | (1 << 7) | (1 << 9),
     METHODS_PAIR(g_SwfcMethods),
-    false, false, true, false, false, false
+    0
   },
   {
     "Tar",
     (1 << 0),
-    0, 0,
-    false, false, false, false, false, false
+    0, NULL,
+    0
   },
   {
     "wim",
     (1 << 0),
-    0, 0,
-    false, false, false, false, false, false
+    0, NULL,
+    0
   },
   {
     "Hash",
     (0 << 0),
     METHODS_PAIR(g_HashMethods),
-    false, false, false, false, false, false
+    0
   }
 };
 
@@ -372,14 +386,12 @@ bool CCompressDialog::OnInit()
   {
     UInt64 size = (UInt64)(sizeof(size_t)) << 29;
     _ramSize_Defined = NSystem::GetRamSize(size);
-    // size = 100 << 20; // for debug only;
+    // size = (UInt64)3 << 62; // for debug only;
     _ramSize = size;
     const UInt64 kMinUseSize = (1 << 26);
     if (size < kMinUseSize)
       size = kMinUseSize;
 
-    _ramUsage_Limit = size / 32 * 30; // it's relaxed limit for user defined settings
-
     unsigned bits = sizeof(size_t) * 8;
     if (bits == 32)
     {
@@ -388,7 +400,10 @@ bool CCompressDialog::OnInit()
         size = limit2;
     }
 
-    _ramUsage_Auto  = size / 32 * 28; // it's same as in auto usage limit in handlers
+    _ramSize_Reduced = size;
+
+    // 80% - is auto usage limit in handlers
+    _ramUsage_Auto = Calc_From_Val_Percents(size, 80);
   }
 
   _password1Control.Attach(GetItem(IDE_COMPRESS_PASSWORD1));
@@ -406,6 +421,7 @@ bool CCompressDialog::OnInit()
   m_Order.Attach(GetItem(IDC_COMPRESS_ORDER));
   m_Solid.Attach(GetItem(IDC_COMPRESS_SOLID));
   m_NumThreads.Attach(GetItem(IDC_COMPRESS_THREADS));
+  m_MemUse.Attach(GetItem(IDC_COMPRESS_MEM_USE));
   
   m_UpdateMode.Attach(GetItem(IDC_COMPRESS_UPDATE_MODE));
   m_PathMode.Attach(GetItem(IDC_COMPRESS_PATH_MODE));
@@ -543,7 +559,7 @@ bool CCompressDialog::OnButtonClicked(int buttonID, HWND buttonHWND)
 void CCompressDialog::CheckSFXControlsEnable()
 {
   const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
-  bool enable = fi.SFX;
+  bool enable = fi.SFX_();
   if (enable)
   {
     const int methodID = GetMethodID();
@@ -578,11 +594,12 @@ void CCompressDialog::FormatChanged()
   SetLevel();
   SetSolidBlockSize();
   SetParams();
+  SetMemUseCombo();
   SetNumThreads();
 
   const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
-  Info.SolidIsSpecified = fi.Solid;
-  Info.EncryptHeadersIsAllowed = fi.EncryptFileNames;
+  Info.SolidIsSpecified = fi.Solid_();
+  Info.EncryptHeadersIsAllowed = fi.EncryptFileNames_();
   
   /*
   const bool multiThreadEnable = fi.MultiThread;
@@ -613,19 +630,20 @@ void CCompressDialog::FormatChanged()
   }
   // CheckVolumeEnable();
 
-  EnableItem(IDG_COMPRESS_ENCRYPTION, fi.Encrypt);
+  const bool encrypt = fi.Encrypt_();
+  EnableItem(IDG_COMPRESS_ENCRYPTION, encrypt);
 
-  EnableItem(IDT_PASSWORD_ENTER, fi.Encrypt);
-  EnableItem(IDT_PASSWORD_REENTER, fi.Encrypt);
-  EnableItem(IDE_COMPRESS_PASSWORD1, fi.Encrypt);
-  EnableItem(IDE_COMPRESS_PASSWORD2, fi.Encrypt);
-  EnableItem(IDX_PASSWORD_SHOW, fi.Encrypt);
+  EnableItem(IDT_PASSWORD_ENTER, encrypt);
+  EnableItem(IDT_PASSWORD_REENTER, encrypt);
+  EnableItem(IDE_COMPRESS_PASSWORD1, encrypt);
+  EnableItem(IDE_COMPRESS_PASSWORD2, encrypt);
+  EnableItem(IDX_PASSWORD_SHOW, encrypt);
 
-  EnableItem(IDT_COMPRESS_ENCRYPTION_METHOD, fi.Encrypt);
-  EnableItem(IDC_COMPRESS_ENCRYPTION_METHOD, fi.Encrypt);
-  EnableItem(IDX_COMPRESS_ENCRYPT_FILE_NAMES, fi.EncryptFileNames);
+  EnableItem(IDT_COMPRESS_ENCRYPTION_METHOD, encrypt);
+  EnableItem(IDC_COMPRESS_ENCRYPTION_METHOD, encrypt);
+  EnableItem(IDX_COMPRESS_ENCRYPT_FILE_NAMES, fi.EncryptFileNames_());
 
-  ShowItem_Bool(IDX_COMPRESS_ENCRYPT_FILE_NAMES, fi.EncryptFileNames);
+  ShowItem_Bool(IDX_COMPRESS_ENCRYPT_FILE_NAMES, fi.EncryptFileNames_());
 
   SetEncryptionMethod();
   SetMemoryUsage();
@@ -767,9 +785,10 @@ static bool IsAsciiString(const UString &s)
 
 static void AddSize_MB(UString &s, UInt64 size)
 {
-  char temp[32];
-  ConvertUInt64ToString((size + (1 << 20) - 1) >> 20, temp);
-  s += temp;
+  const UInt64 v2 = size + ((UInt32)1 << 20) - 1;
+  if (size <= v2)
+    size = v2;
+  s.Add_UInt64(size >> 20);
   s += " MB";
 }
 
@@ -793,7 +812,7 @@ void SetErrorMessage_MemUsage(UString &s, UInt64 reqSize, UInt64 ramSize, UInt64
   AddSize_MB(s, ramSize);
   s += " : RAM";
 
-  if (ramLimit != 0)
+  // if (ramLimit != 0)
   {
     s.Add_LF();
     AddSize_MB(s, ramLimit);
@@ -841,15 +860,18 @@ void CCompressDialog::OnOK()
     UInt64 decompressMem;
     const UInt64 memUsage = GetMemoryUsage_DecompMem(decompressMem);
     if (memUsage != (UInt64)(Int64)-1)
-    if (_ramSize_Defined && memUsage > _ramUsage_Limit)
     {
-      UString s;
-      UString s2 = LangString(IDT_COMPRESS_MEMORY);
-      if (s2.IsEmpty())
-        GetItemText(IDT_COMPRESS_MEMORY, s2);
-      SetErrorMessage_MemUsage(s, memUsage, _ramSize, _ramUsage_Limit, s2);
-      MessageBoxError(s);
-      return;
+      const UInt64 limit = Get_MemUse_Bytes();
+      if (memUsage > limit)
+      {
+        UString s;
+        UString s2 = LangString(IDT_COMPRESS_MEMORY);
+        if (s2.IsEmpty())
+          GetItemText(IDT_COMPRESS_MEMORY, s2);
+        SetErrorMessage_MemUsage(s, memUsage, _ramSize, limit, s2);
+        MessageBoxError(s);
+        return;
+      }
     }
   }
 
@@ -876,6 +898,18 @@ void CCompressDialog::OnOK()
   Info.OrderMode = GetOrderMode();
   Info.NumThreads = GetNumThreadsSpec();
 
+  Info.MemUsage.Clear();
+  {
+    const UString mus = Get_MemUse_Spec();
+    if (!mus.IsEmpty())
+    {
+      NCompression::CMemUse mu;
+      mu.Parse(mus);
+      if (mu.IsDefined)
+        Info.MemUsage = mu;
+    }
+  }
+
   {
     // Info.SolidIsSpecified = g_Formats[GetStaticFormatIndex()].Solid;
     const UInt32 solidLogSize = GetBlockSizeSpec();
@@ -1061,6 +1095,18 @@ bool CCompressDialog::OnCommand(int code, int itemID, LPARAM lParam)
         SetMemoryUsage();
         return true;
       }
+      
+      case IDC_COMPRESS_MEM_USE:
+      {
+        /* we want to change the reported threads for Auto line
+           and keep selected NumThreads option
+           So we save selected NumThreads option in memory */
+        SaveOptionsInMem();
+
+        SetNumThreads(); // we want to change the reported threads for Auto line only
+        SetMemoryUsage();
+        return true;
+      }
     }
   }
   return CModalDialog::OnCommand(code, itemID, lParam);
@@ -1435,22 +1481,19 @@ static const size_t k_Auto_Dict = (size_t)0 - 1;
 
 int CCompressDialog::AddDict2(size_t sizeReal, size_t sizeShow)
 {
-  Byte c = 0;
+  char c = 0;
   unsigned moveBits = 0;
        if ((sizeShow & 0xFFFFF) == 0) { moveBits = 20; c = 'M'; }
   else if ((sizeShow &   0x3FF) == 0) { moveBits = 10; c = 'K'; }
-  char s[32];
-  ConvertUInt64ToString(sizeShow >> moveBits, s);
-  unsigned pos = MyStringLen(s);
-  s[pos++] = ' ';
+  AString s;
+  s.Add_UInt64(sizeShow >> moveBits);
+  s.Add_Space();
   if (moveBits != 0)
-    s[pos++] = c;
-  s[pos++] = 'B';
-  s[pos++] = 0;
-  AString s2 (s);
+    s += c;
+  s += 'B';
   if (sizeReal == k_Auto_Dict)
-    Modify_Auto(s2);
-  const int index = (int)ComboBox_AddStringAscii(m_Dictionary, s2);
+    Modify_Auto(s);
+  const int index = (int)ComboBox_AddStringAscii(m_Dictionary, s);
   m_Dictionary.SetItemData(index, sizeReal);
   return index;
 }
@@ -1831,22 +1874,18 @@ static UInt64 Get_Lzma2_ChunkSize(UInt64 dict)
 }
 
 
-static void Add_Size(AString &s2, UInt64 val)
+static void Add_Size(AString &s, UInt64 val)
 {
   unsigned moveBits = 0;
-  Byte c = 0;
+  char c = 0;
        if ((val & 0x3FFFFFFF) == 0) { moveBits = 30; c = 'G'; }
   else if ((val &    0xFFFFF) == 0) { moveBits = 20; c = 'M'; }
   else if ((val &      0x3FF) == 0) { moveBits = 10; c = 'K'; }
-  char s[32];
-  ConvertUInt64ToString(val >> moveBits, s);
-  unsigned pos = MyStringLen(s);
-  s[pos++] = ' ';
+  s.Add_UInt64(val >> moveBits);
+  s.Add_Space();
   if (moveBits != 0)
-    s[pos++] = c;
-  s[pos++] = 'B';
-  s[pos++] = 0;
-  s2 += s;
+    s += c;
+  s += 'B';
 }
 
 
@@ -1856,7 +1895,7 @@ void CCompressDialog::SetSolidBlockSize2()
   _auto_Solid = 1 << 20;
 
   const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
-  if (!fi.Solid)
+  if (!fi.Solid_())
     return;
 
   const UInt32 level = GetLevel2();
@@ -1977,7 +2016,7 @@ void CCompressDialog::SetNumThreads2()
 
   m_NumThreads.ResetContent();
   const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
-  if (!fi.MultiThread)
+  if (!fi.MultiThread_())
     return;
 
   const UInt32 numHardwareThreads = NSystem::GetNumberOfProcessors();
@@ -2029,6 +2068,8 @@ void CCompressDialog::SetNumThreads2()
   if (autoThreads > numAlgoThreadsMax)
     autoThreads = numAlgoThreadsMax;
 
+  const UInt64 memUse_Limit = Get_MemUse_Bytes();
+
   if (autoThreads > 1 && _ramSize_Defined)
   {
     if (isZip)
@@ -2038,7 +2079,7 @@ void CCompressDialog::SetNumThreads2()
         const UInt64 dict64 = GetDict2();
         UInt64 decompressMemory;
         const UInt64 usage = GetMemoryUsage_Threads_Dict_DecompMem(autoThreads, dict64, decompressMemory);
-        if (usage <= _ramUsage_Auto)
+        if (usage <= memUse_Limit)
           break;
       }
     }
@@ -2052,7 +2093,7 @@ void CCompressDialog::SetNumThreads2()
         autoThreads = numBlockThreads * numThreads1;
         UInt64 decompressMemory;
         const UInt64 usage = GetMemoryUsage_Threads_Dict_DecompMem(autoThreads, dict64, decompressMemory);
-        if (usage <= _ramUsage_Auto)
+        if (usage <= memUse_Limit)
           break;
       }
       autoThreads = numBlockThreads * numThreads1;
@@ -2088,6 +2129,174 @@ void CCompressDialog::SetNumThreads2()
 }
 
 
+static void AddMemSize(UString &res, UInt64 size)
+{
+  char c;
+  unsigned moveBits = 0;
+  if (size >= ((UInt64)1 << 31) && (size & 0x3FFFFFFF) == 0)
+    { moveBits = 30; c = 'G'; }
+  else // if (size >= ((UInt32)1 << 21) && (size & 0xFFFFF) == 0)
+    { moveBits = 20; c = 'M'; }
+  // else { moveBits = 10; c = 'K'; }
+  res.Add_UInt64(size >> moveBits);
+  res.Add_Space();
+  if (moveBits != 0)
+    res += c;
+  res += 'B';
+}
+
+
+int CCompressDialog::AddMemComboItem(UInt64 val, bool isPercent, bool isDefault)
+{
+  UString sUser;
+  UString sRegistry;
+  if (isPercent)
+  {
+    UString s;
+    s.Add_UInt64(val);
+    s += '%';
+    if (isDefault)
+      sUser = "* ";
+    else
+      sRegistry = s;
+    sUser += s;
+  }
+  else
+  {
+    AddMemSize(sUser, val);
+    sRegistry = sUser;
+    for (;;)
+    {
+      int pos = sRegistry.Find(L' ');
+      if (pos < 0)
+        break;
+      sRegistry.Delete(pos);
+    }
+    if (!sRegistry.IsEmpty())
+      if (sRegistry.Back() == 'B')
+        sRegistry.DeleteBack();
+  }
+  const unsigned dataIndex = _memUse_Strings.Add(sRegistry);
+  const int index = (int)m_MemUse.AddString(sUser);
+  m_MemUse.SetItemData(index, dataIndex);
+  return index;
+}
+
+
+
+void CCompressDialog::SetMemUseCombo()
+{
+  _memUse_Strings.Clear();
+  m_MemUse.ResetContent();
+  const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
+
+  {
+    const bool enable = fi.MemUse_();
+    ShowItem_Bool(IDT_COMPRESS_MEMORY, enable);
+    ShowItem_Bool(IDT_COMPRESS_MEMORY_VALUE, enable);
+    ShowItem_Bool(IDT_COMPRESS_MEMORY_DE, enable);
+    ShowItem_Bool(IDT_COMPRESS_MEMORY_DE_VALUE, enable);
+    ShowItem_Bool(IDC_COMPRESS_MEM_USE, enable);
+    EnableItem(IDC_COMPRESS_MEM_USE, enable);
+    if (!enable)
+      return;
+  }
+
+  UInt64 curMem_Bytes = 0;
+  UInt64 curMem_Percents = 0;
+  bool needSetCur_Bytes = false;
+  bool needSetCur_Percents = false;
+  {
+    const NCompression::CFormatOptions &fo = Get_FormatOptions();
+    if (!fo.MemUse.IsEmpty())
+    {
+      NCompression::CMemUse mu;
+      mu.Parse(fo.MemUse);
+      if (mu.IsDefined)
+      {
+        if (mu.IsPercent)
+        {
+          curMem_Percents = mu.Val;
+          needSetCur_Percents = true;
+        }
+        else
+        {
+          curMem_Bytes = mu.GetBytes(_ramSize_Reduced);
+          needSetCur_Bytes = true;
+        }
+      }
+    }
+  }
+
+  
+  // 80% - is auto usage limit in handlers
+  AddMemComboItem(80, true, true);
+  m_MemUse.SetCurSel(0);
+
+  {
+    for (unsigned i = 10;; i += 10)
+    {
+      UInt64 size = i;
+      if (i > 100)
+        size = (UInt64)(Int64)-1;
+      if (needSetCur_Percents && size >= curMem_Percents)
+      {
+        const int index = AddMemComboItem(curMem_Percents, true);
+        m_MemUse.SetCurSel(index);
+        needSetCur_Percents = false;
+        if (size == curMem_Percents)
+          continue;
+      }
+      if (size == (UInt64)(Int64)-1)
+        break;
+      AddMemComboItem(size, true);
+    }
+  }
+  {
+    for (unsigned i = (27) * 2;; i++)
+    {
+      UInt64 size = (UInt64)(2 + (i & 1)) << (i / 2);
+      if (i > (20 + sizeof(size_t) * 3 - 1) * 2)
+        size = (UInt64)(Int64)-1;
+      if (needSetCur_Bytes && size >= curMem_Bytes)
+      {
+        const int index = AddMemComboItem(curMem_Bytes);
+        m_MemUse.SetCurSel(index);
+        needSetCur_Bytes = false;
+        if (size == curMem_Bytes)
+          continue;
+      }
+      if (size == (UInt64)(Int64)-1)
+        break;
+      AddMemComboItem(size);
+    }
+  }
+}
+
+
+UString CCompressDialog::Get_MemUse_Spec()
+{
+  if (m_MemUse.GetCount() < 1)
+    return UString();
+  return _memUse_Strings[(unsigned)m_MemUse.GetItemData_of_CurSel()];
+}
+
+
+UInt64 CCompressDialog::Get_MemUse_Bytes()
+{
+  const UString mus = Get_MemUse_Spec();
+  NCompression::CMemUse mu;
+  if (!mus.IsEmpty())
+  {
+    mu.Parse(mus);
+    if (mu.IsDefined)
+      return mu.GetBytes(_ramSize_Reduced);
+  }
+  return _ramUsage_Auto; // _ramSize_Reduced; // _ramSize;;
+}
+
+
+
 UInt64 CCompressDialog::GetMemoryUsage_DecompMem(UInt64 &decompressMemory)
 {
   return GetMemoryUsage_Dict_DecompMem(GetDict2(), decompressMemory);
@@ -2119,7 +2328,7 @@ UInt64 CCompressDialog::GetMemoryUsage_Threads_Dict_DecompMem(UInt32 numThreads,
   UInt64 size = 0;
 
   const CFormatInfo &fi = g_Formats[GetStaticFormatIndex()];
-  if (fi.Filter && level >= 9)
+  if (fi.Filter_() && level >= 9)
     size += (12 << 20) * 2 + (5 << 20);
   // UInt32 numThreads = GetNumThreads2();
   
@@ -2254,28 +2463,69 @@ UInt64 CCompressDialog::GetMemoryUsage_Threads_Dict_DecompMem(UInt32 numThreads,
 }
 
 
-void CCompressDialog::PrintMemUsage(UINT res, UInt64 value)
+
+static void AddMemUsage(UString &s, UInt64 v)
 {
-  if (value == (UInt64)(Int64)-1)
+  const char *post;
+  if (v <= ((UInt64)16 << 30))
   {
-    SetItemText(res, TEXT("?"));
-    return;
+    v = (v + (1 << 20) - 1) >> 20;
+    post = "MB";
   }
-  TCHAR s[32];
-  if (value <= ((UInt64)16 << 30))
+  else if (v <= ((UInt64)64 << 40))
   {
-    value = (value + (1 << 20) - 1) >> 20;
-    ConvertUInt64ToString(value, s);
-    lstrcat(s, TEXT(" MB"));
+    v = (v + (1 << 30) - 1) >> 30;
+    post = "GB";
   }
   else
   {
-    value = (value + (1 << 30) - 1) >> 30;
-    ConvertUInt64ToString(value, s);
-    lstrcat(s, TEXT(" GB"));
+    const UInt64 v2 = v + ((UInt64)1 << 40) - 1;
+    if (v <= v2)
+      v = v2;
+    v >>= 40;
+    post = "TB";
+  }
+  s.Add_UInt64(v);
+  s.Add_Space();
+  s += post;
+}
+
+
+void CCompressDialog::PrintMemUsage(UINT res, UInt64 value)
+{
+  if (value == (UInt64)(Int64)-1)
+  {
+    SetItemText(res, TEXT("?"));
+    return;
+  }
+  UString s;
+  AddMemUsage(s, value);
+  if (res == IDT_COMPRESS_MEMORY_VALUE)
+  {
+    const UString mus = Get_MemUse_Spec();
+    NCompression::CMemUse mu;
+    if (!mus.IsEmpty())
+      mu.Parse(mus);
+    if (mu.IsDefined)
+    {
+      s += " / ";
+      AddMemUsage(s, mu.GetBytes(_ramSize_Reduced));
+    }
+    else if (_ramSize_Defined)
+    {
+      s += " / ";
+      AddMemUsage(s, _ramUsage_Auto);
+    }
+
+    if (_ramSize_Defined)
+    {
+      s += " / ";
+      AddMemUsage(s, _ramSize);
+    }
   }
   SetItemText(res, s);
 }
+
     
 void CCompressDialog::SetMemoryUsage()
 {
@@ -2334,6 +2584,7 @@ void CCompressDialog::SaveOptionsInMem()
   fo.EncryptionMethod = GetEncryptionMethodSpec();
   fo.NumThreads = GetNumThreadsSpec();
   fo.BlockLogSize = GetBlockSizeSpec();
+  fo.MemUse = Get_MemUse_Spec();
 }
 
 unsigned CCompressDialog::GetFormatIndex()
diff --git a/CPP/7zip/UI/GUI/CompressDialog.h b/CPP/7zip/UI/GUI/CompressDialog.h
index d8091b04..171d1189 100644
--- a/CPP/7zip/UI/GUI/CompressDialog.h
+++ b/CPP/7zip/UI/GUI/CompressDialog.h
@@ -38,6 +38,8 @@ namespace NCompressDialog
     UInt64 SolidBlockSize;
     UInt32 NumThreads;
 
+    NCompression::CMemUse MemUsage;
+
     CRecordVector<UInt64> VolumeSizes;
 
     UInt32 Level;
@@ -102,8 +104,11 @@ class CCompressDialog: public NWindows::NControl::CModalDialog
   NWindows::NControl::CComboBox m_Order;
   NWindows::NControl::CComboBox m_Solid;
   NWindows::NControl::CComboBox m_NumThreads;
+  NWindows::NControl::CComboBox m_MemUse;
   NWindows::NControl::CComboBox m_Volume;
 
+  UStringVector _memUse_Strings;
+
   NWindows::NControl::CDialogChildControl m_Params;
 
   NWindows::NControl::CComboBox m_UpdateMode;
@@ -128,10 +133,9 @@ class CCompressDialog: public NWindows::NControl::CModalDialog
   UString StartDirPrefix;
 
   bool _ramSize_Defined;
-  UInt64 _ramSize;
+  UInt64 _ramSize;         // full RAM size avail
+  UInt64 _ramSize_Reduced; // full for 64-bit and reduced for 32-bit
   UInt64 _ramUsage_Auto;
-  UInt64 _ramUsage_Limit;
-
 
   void CheckButton_TwoBools(UINT id, const CBoolPair &b1, const CBoolPair &b2);
   void GetButton_Bools(UINT id, CBoolPair &b1, CBoolPair &b2);
@@ -254,6 +258,10 @@ class CCompressDialog: public NWindows::NControl::CModalDialog
     EnableMultiCombo(IDC_COMPRESS_THREADS);
   }
 
+  int AddMemComboItem(UInt64 val, bool isPercent = false, bool isDefault = false);
+  void SetMemUseCombo();
+  UString Get_MemUse_Spec();
+  UInt64 Get_MemUse_Bytes();
 
   UInt64 GetMemoryUsage_Dict_DecompMem(UInt64 dict, UInt64 &decompressMemory);
   UInt64 GetMemoryUsage_Threads_Dict_DecompMem(UInt32 numThreads, UInt64 dict, UInt64 &decompressMemory);
diff --git a/CPP/7zip/UI/GUI/CompressDialog.rc b/CPP/7zip/UI/GUI/CompressDialog.rc
index d6ce5ac0..52c9546a 100644
--- a/CPP/7zip/UI/GUI/CompressDialog.rc
+++ b/CPP/7zip/UI/GUI/CompressDialog.rc
@@ -29,7 +29,7 @@
 #define g0xs (gSize - g1xs)
 #define g1x  (m + g0xs)
 
-#define g3xs 40
+#define g3xs 52
 #define g2xs (gSize - g3xs)
 #define g3x  (m + g2xs)
 
@@ -82,14 +82,15 @@ BEGIN
 
   LTEXT     "Number of CPU &threads:", IDT_COMPRESS_THREADS, m, 167, g0xs, 8
   COMBOBOX  IDC_COMPRESS_THREADS,  g1x, 165, g1xs - 35, 140, MY_COMBO
-  RTEXT     "", IDT_COMPRESS_HARDWARE_THREADS, g1x + g1xs - 35 + 10, 167, 25, 8
+  RTEXT     "", IDT_COMPRESS_HARDWARE_THREADS, g1x + g1xs - 35 + 10, 167, 25, MY_TEXT_NOPREFIX
 
   
-  LTEXT     "Memory usage for Compressing:", IDT_COMPRESS_MEMORY,      m, 190, g2xs, 8
-  RTEXT     "", IDT_COMPRESS_MEMORY_VALUE,    g3x, 190, g3xs, 8
+  LTEXT     "Memory usage for Compressing:", IDT_COMPRESS_MEMORY,      m, 184, g2xs, 8
+  COMBOBOX  IDC_COMPRESS_MEM_USE,  g3x, 188, g3xs, 140, MY_COMBO
+  LTEXT     "", IDT_COMPRESS_MEMORY_VALUE,    m, 194, g2xs, MY_TEXT_NOPREFIX
   
-  LTEXT     "Memory usage for Decompressing:", IDT_COMPRESS_MEMORY_DE, m, 206, g2xs, 8
-  RTEXT     "", IDT_COMPRESS_MEMORY_DE_VALUE, g3x, 206, g3xs, 8
+  LTEXT     "Memory usage for Decompressing:", IDT_COMPRESS_MEMORY_DE, m, 208, g2xs, 8
+  RTEXT     "", IDT_COMPRESS_MEMORY_DE_VALUE, g3x, 208, g3xs, MY_TEXT_NOPREFIX
 
 
   LTEXT     "Split to &volumes, bytes:", IDT_SPLIT_TO_VOLUMES, m, 225, gSize, 8
diff --git a/CPP/7zip/UI/GUI/CompressDialogRes.h b/CPP/7zip/UI/GUI/CompressDialogRes.h
index ff99fa94..341b7533 100644
--- a/CPP/7zip/UI/GUI/CompressDialogRes.h
+++ b/CPP/7zip/UI/GUI/CompressDialogRes.h
@@ -20,6 +20,7 @@
 
 #define IDG_COMPRESS_NTFS                115
 #define IDC_COMPRESS_PATH_MODE           116
+#define IDC_COMPRESS_MEM_USE             117
 
 #define IDE_COMPRESS_PASSWORD1           120
 #define IDE_COMPRESS_PASSWORD2           121
diff --git a/CPP/7zip/UI/GUI/ExtractGUI.cpp b/CPP/7zip/UI/GUI/ExtractGUI.cpp
index 59403ee9..a9191a8b 100644
--- a/CPP/7zip/UI/GUI/ExtractGUI.cpp
+++ b/CPP/7zip/UI/GUI/ExtractGUI.cpp
@@ -44,9 +44,7 @@ static void AddValuePair(UString &s, UINT resourceID, UInt64 value, bool addColo
   if (addColon)
     s += ':';
   s.Add_Space();
-  char sz[32];
-  ConvertUInt64ToString(value, sz);
-  s += sz;
+  s.Add_UInt64(value);
   s.Add_LF();
 }
 
diff --git a/CPP/7zip/UI/GUI/HashGUI.cpp b/CPP/7zip/UI/GUI/HashGUI.cpp
index 219135fb..5782f790 100644
--- a/CPP/7zip/UI/GUI/HashGUI.cpp
+++ b/CPP/7zip/UI/GUI/HashGUI.cpp
@@ -75,11 +75,10 @@ void AddSizeValue(UString &s, UInt64 value)
           if (value >= ((UInt64)10 << 30)) { value >>= 30; c = 'G'; }
     else  if (value >=         (10 << 20)) { value >>= 20; c = 'M'; }
     else                                   { value >>= 10; c = 'K'; }
-    char sz[32];
-    ConvertUInt64ToString(value, sz);
+    
     s += " (";
-    s += sz;
-    s += " ";
+    s.Add_UInt64(value);
+    s.Add_Space();
     s += (wchar_t)c;
     s += "iB)";
   }
diff --git a/CPP/7zip/UI/GUI/UpdateGUI.cpp b/CPP/7zip/UI/GUI/UpdateGUI.cpp
index 1bdc9ffe..6fd1b60b 100644
--- a/CPP/7zip/UI/GUI/UpdateGUI.cpp
+++ b/CPP/7zip/UI/GUI/UpdateGUI.cpp
@@ -61,7 +61,7 @@ HRESULT CThreadUpdating::ProcessVirt()
   return HRESULT_FROM_WIN32(ei.SystemError);
 }
 
-static void AddProp(CObjectVector<CProperty> &properties, const char *name, const UString &value)
+static void AddProp_UString(CObjectVector<CProperty> &properties, const char *name, const UString &value)
 {
   CProperty prop;
   prop.Name = name;
@@ -69,16 +69,16 @@ static void AddProp(CObjectVector<CProperty> &properties, const char *name, cons
   properties.Add(prop);
 }
 
-static void AddProp(CObjectVector<CProperty> &properties, const char *name, UInt32 value)
+static void AddProp_UInt32(CObjectVector<CProperty> &properties, const char *name, UInt32 value)
 {
-  char tmp[32];
-  ConvertUInt64ToString(value, tmp);
-  AddProp(properties, name, UString(tmp));
+  UString s;
+  s.Add_UInt32(value);
+  AddProp_UString(properties, name, s);
 }
 
-static void AddProp(CObjectVector<CProperty> &properties, const char *name, bool value)
+static void AddProp_bool(CObjectVector<CProperty> &properties, const char *name, bool value)
 {
-  AddProp(properties, name, UString(value ? "on": "off"));
+  AddProp_UString(properties, name, UString(value ? "on": "off"));
 }
 
 static bool IsThereMethodOverride(bool is7z, const UString &propertiesString)
@@ -126,16 +126,16 @@ static void ParseAndAddPropertires(CObjectVector<CProperty> &properties,
   }
 }
 
-static UString GetNumInBytesString(UInt64 v)
+
+static void AddProp_Size(CObjectVector<CProperty> &properties, const char *name, const UInt64 size)
 {
-  char s[32];
-  ConvertUInt64ToString(v, s);
-  size_t len = MyStringLen(s);
-  s[len++] = 'B';
-  s[len] = '\0';
-  return UString(s);
+  UString s;
+  s.Add_UInt64(size);
+  s += 'b';
+  AddProp_UString(properties, name, s);
 }
 
+
 static void SetOutProperties(
     CObjectVector<CProperty> &properties,
     bool is7z,
@@ -150,21 +150,22 @@ static void SetOutProperties(
     UInt32 numThreads,
     const UString &encryptionMethod,
     bool encryptHeadersIsAllowed, bool encryptHeaders,
+    const NCompression::CMemUse &memUse,
     bool /* sfxMode */)
 {
   if (level != (UInt32)(Int32)-1)
-    AddProp(properties, "x", (UInt32)level);
+    AddProp_UInt32(properties, "x", (UInt32)level);
   if (setMethod)
   {
     if (!method.IsEmpty())
-      AddProp(properties, is7z ? "0": "m", method);
+      AddProp_UString(properties, is7z ? "0": "m", method);
     if (dict64 != (UInt64)(Int64)-1)
     {
       AString name;
       if (is7z)
         name = "0";
       name += (orderMode ? "mem" : "d");
-      AddProp(properties, name, GetNumInBytesString(dict64));
+      AddProp_Size(properties, name, dict64);
     }
     if (order != (UInt32)(Int32)-1)
     {
@@ -172,21 +173,37 @@ static void SetOutProperties(
       if (is7z)
         name = "0";
       name += (orderMode ? "o" : "fb");
-      AddProp(properties, name, (UInt32)order);
+      AddProp_UInt32(properties, name, (UInt32)order);
     }
   }
     
   if (!encryptionMethod.IsEmpty())
-    AddProp(properties, "em", encryptionMethod);
+    AddProp_UString(properties, "em", encryptionMethod);
 
   if (encryptHeadersIsAllowed)
-    AddProp(properties, "he", encryptHeaders);
+    AddProp_bool(properties, "he", encryptHeaders);
   if (solidIsSpecified)
-    AddProp(properties, "s", GetNumInBytesString(solidBlockSize));
+    AddProp_Size(properties, "s", solidBlockSize);
+  
   if (
       // multiThreadIsAllowed &&
       numThreads != (UInt32)(Int32)-1)
-    AddProp(properties, "mt", numThreads);
+    AddProp_UInt32(properties, "mt", numThreads);
+  
+  if (memUse.IsDefined)
+  {
+    const char *kMemUse = "memuse";
+    if (memUse.IsPercent)
+    {
+      UString s;
+      // s += 'p'; // for debug: alternate percent method
+      s.Add_UInt64(memUse.Val);
+      s += '%';
+      AddProp_UString(properties, kMemUse, s);
+    }
+    else
+      AddProp_Size(properties, kMemUse, memUse.Val);
+  }
 }
 
 struct C_UpdateMode_ToAction_Pair
@@ -408,6 +425,7 @@ static HRESULT ShowDialog(
       di.NumThreads,
       di.EncryptionMethod,
       di.EncryptHeadersIsAllowed, di.EncryptHeaders,
+      di.MemUsage,
       di.SFXMode);
   
   options.OpenShareForWrite = di.OpenShareForWrite;