C++ UString::Back方法代码示例

UString GetMyDocsPath()
{
  UString us;
  WCHAR s[MAX_PATH + 1];
  SHGetSpecialFolderPathWp getW = (SHGetSpecialFolderPathWp)
      #ifdef UNDER_CE
      My_GetProcAddress(GetModuleHandle(TEXT("coredll.dll")), "SHGetSpecialFolderPath");
      #else
      My_GetProcAddress(GetModuleHandle(TEXT("shell32.dll")), "SHGetSpecialFolderPathW");
      #endif
  if (getW && getW(0, s, CSIDL_PERSONAL, FALSE))
    us = s;
  #ifndef _UNICODE
  else
  {
    SHGetSpecialFolderPathAp getA = (SHGetSpecialFolderPathAp)
        ::GetProcAddress(::GetModuleHandleA("shell32.dll"), "SHGetSpecialFolderPathA");
    CHAR s2[MAX_PATH + 1];
    if (getA && getA(0, s2, CSIDL_PERSONAL, FALSE))
      us = GetUnicodeString(s2);
  }
  #endif
  if (us.Length() > 0 && us.Back() != WCHAR_PATH_SEPARATOR)
    us += WCHAR_PATH_SEPARATOR;
  return us;
}

void NormalizeDirPathPrefix(UString &dirPath)
{
  if (dirPath.IsEmpty())
    return;
  if (dirPath.Back() != WCHAR_PATH_SEPARATOR)
    dirPath += WCHAR_PATH_SEPARATOR;
}

UString GetOSName2(const UString &name)
{
  if (name.IsEmpty())
    return UString();
  UString newName = GetOSName(name);
  if (newName.Back() == kOSDirDelimiter)
    newName.DeleteBack();
  return newName;
}

void ConvertToOSName2(UString &name)
{
  if (!name.IsEmpty())
  {
    name.Replace(kDirDelimiter, kOSDirDelimiter);
    if (name.Back() == kOSDirDelimiter)
      name.DeleteBack();
  }
}

static void AddName(UStringVector &strings, UString &s)
{
  s.Trim();
  if (s.Len() >= 2 && s[0] == kQuoteChar && s.Back() == kQuoteChar)
  {
    s.DeleteBack();
    s.Delete(0);
  }
  if (!s.IsEmpty())
    strings.Add(s);
}

bool CBrowseDialog::GetParentPath(const UString &path, UString &parentPrefix, UString &name)
{
  parentPrefix.Empty();
  name.Empty();
  if (path.IsEmpty())
    return false;
  if (_topDirPrefix == path)
    return false;
  UString s = path;
  if (s.Back() == WCHAR_PATH_SEPARATOR)
    s.DeleteBack();
  if (s.IsEmpty())
    return false;
  if (s.Back() == WCHAR_PATH_SEPARATOR)
    return false;
  int pos = s.ReverseFind_PathSepar();
  parentPrefix.SetFrom(s, pos + 1);
  name = s.Ptr(pos + 1);
  return true;
}

STDMETHODIMP CFSFolder::CopyTo(const UInt32 *indices, UInt32 numItems,
    const wchar_t *path, IFolderOperationsExtractCallback *callback)
{
  if (numItems == 0)
    return S_OK;
  
  UInt64 numFolders, numFiles, totalSize;
  GetItemsFullSize(indices, numItems, numFolders, numFiles, totalSize, callback);
  RINOK(callback->SetTotal(totalSize));
  RINOK(callback->SetNumFiles(numFiles));
  
  UString destPath = path;
  if (destPath.IsEmpty())
    return E_INVALIDARG;
  bool directName = (destPath.Back() != WCHAR_PATH_SEPARATOR);
  if (directName)
  {
    if (numItems > 1)
      return E_INVALIDARG;
  }
    /*
    // doesn't work in network
  else
    if (!NDirectory::CreateComplexDirectory(destPath)))
    {
      DWORD lastError = ::GetLastError();
      UString message = UString(L"can not create folder ") +
        destPath;
      RINOK(callback->ShowMessage(message));
      return E_ABORT;
    }
    */

  UInt64 completedSize = 0;
  RINOK(callback->SetCompleted(&completedSize));
  for (UInt32 i = 0; i < numItems; i++)
  {
    const CDirItem &fi = *_refs[indices[i]];
    FString destPath2 = us2fs(destPath);
    if (!directName)
      destPath2 += fi.Name;
    FString srcPath = _path + GetPrefix(fi) + fi.Name;
    if (fi.IsDir())
    {
      RINOK(CopyFolder(srcPath, destPath2, callback, completedSize));
    }
    else
    {
      RINOK(MyCopyFile(srcPath, fi, destPath2, callback, completedSize));
    }
  }
  return S_OK;
}

  bool ParseName(const UString &name)
  {
    if (name.Len() < 2)
      return false;
    if (name.Back() != L'1' || name[name.Len() - 2] != L'0')
      return false;

    unsigned pos = name.Len() - 2;
    for (; pos > 0 && name[pos - 1] == '0'; pos--);
    UnchangedPart.SetFrom(name, pos);
    ChangedPart = name.Ptr(pos);
    return true;
  }

HRESULT SetProperties(IUnknown *unknown, const CObjectVector<CProperty> &properties)
{
  if (properties.IsEmpty())
    return S_OK;
  CMyComPtr<ISetProperties> setProperties;
  unknown->QueryInterface(IID_ISetProperties, (void **)&setProperties);
  if (!setProperties)
    return S_OK;

  UStringVector realNames;
  CPropVariant *values = new CPropVariant[properties.Size()];
  try
  {
    int i;
    for(i = 0; i < properties.Size(); i++)
    {
      const CProperty &property = properties[i];
      NCOM::CPropVariant propVariant;
      UString name = property.Name;
      if (property.Value.IsEmpty())
      {
        if (!name.IsEmpty())
        {
          wchar_t c = name.Back();
          if (c == L'-')
            propVariant = false;
          else if (c == L'+')
            propVariant = true;
          if (propVariant.vt != VT_EMPTY)
            name.DeleteBack();
        }
      }
      else
        ParseNumberString(property.Value, propVariant);
      realNames.Add(name);
      values[i] = propVariant;
    }
    CRecordVector<const wchar_t *> names;
    for(i = 0; i < realNames.Size(); i++)
      names.Add((const wchar_t *)realNames[i]);
    
    RINOK(setProperties->SetProperties(&names.Front(), values, names.Size()));
  }
  catch(...)
  {
    delete []values;
    throw;
  }
  delete []values;
  return S_OK;
}

void CPanel::LoadFullPathAndShow()
{
  LoadFullPath();
  _appState->FolderHistory.AddString(_currentFolderPrefix);

  _headerComboBox.SetText(_currentFolderPrefix);

  #ifndef UNDER_CE

  COMBOBOXEXITEM item;
  item.mask = 0;

  UString path = _currentFolderPrefix;
  if (path.Len() >
      #ifdef _WIN32
      3
      #else
      1
      #endif
      && path.Back() == WCHAR_PATH_SEPARATOR)
    path.DeleteBack();

  DWORD attrib = FILE_ATTRIBUTE_DIRECTORY;

  // GetRealIconIndex is slow for direct DVD/UDF path. So we use dummy path
  if (path.IsPrefixedBy(L"\\\\.\\"))
    path = L"_TestFolder_";
  else
  {
    CFileInfo fi;
    if (fi.Find(us2fs(path)))
      attrib = fi.Attrib;
  }
  item.iImage = GetRealIconIndex(us2fs(path), attrib);

  if (item.iImage >= 0)
  {
    item.iSelectedImage = item.iImage;
    item.mask |= (CBEIF_IMAGE | CBEIF_SELECTEDIMAGE);
  }
  item.iItem = -1;
  _headerComboBox.SetItem(&item);
  
  #endif

  RefreshTitle();
}

void CPanel::OpenAltStreams()
{
  CRecordVector<UInt32> indices;
  GetOperatedItemIndices(indices);
  Int32 realIndex = -1;
  if (indices.Size() > 1)
    return;
  if (indices.Size() == 1)
    realIndex = indices[0];

  if (_folderAltStreams)
  {
    CMyComPtr<IFolderFolder> newFolder;
    _folderAltStreams->BindToAltStreams(realIndex, &newFolder);
    if (newFolder)
    {
      CDisableTimerProcessing disableTimerProcessing(*this);
      CDisableNotify disableNotify(*this);
      SetNewFolder(newFolder);
      RefreshListCtrl(UString(), -1, true, UStringVector());
      return;
    }
    return;
  }
  
  #if defined(_WIN32) && !defined(UNDER_CE)
  UString path;
  if (realIndex >= 0)
    path = GetItemFullPath(realIndex);
  else
  {
    path = GetFsPath();
    if (!NName::IsDriveRootPath_SuperAllowed(us2fs(path)))
      if (!path.IsEmpty() && IS_PATH_SEPAR(path.Back()))
        path.DeleteBack();
  }

  path += L':';
  BindToPathAndRefresh(path);
  #endif
}

void CHandler::ParseName(Byte replaceByte, IArchiveOpenCallback *callback)
{
  if (!callback)
    return;
  CMyComPtr<IArchiveOpenVolumeCallback> volumeCallback;
  callback->QueryInterface(IID_IArchiveOpenVolumeCallback, (void **)&volumeCallback);
  if (!volumeCallback)
    return;

  NWindows::NCOM::CPropVariant prop;
  if (volumeCallback->GetProperty(kpidName, &prop) != S_OK || prop.vt != VT_BSTR)
    return;

  UString s = prop.bstrVal;
  if (s.IsEmpty() ||
      s.Back() != L'_')
    return;
  
  s.DeleteBack();
  _name = s;
   
  if (replaceByte == 0)
  {
    if (s.Len() < 3 || s[s.Len() - 3] != '.')
      return;
    for (unsigned i = 0; i < ARRAY_SIZE(g_Exts); i++)
    {
      const char *ext = g_Exts[i];
      if (s[s.Len() - 2] == (Byte)ext[0] &&
          s[s.Len() - 1] == (Byte)ext[1])
      {
        replaceByte = ext[2];
        break;
      }
    }
  }
  
  if (replaceByte >= 0x20 && replaceByte < 0x80)
    _name += (wchar_t)replaceByte;
}

bool GetFullPath(CFSTR dirPrefix, CFSTR s, FString &res)
{
  res = s;

  #ifdef UNDER_CE

  if (s[0] != CHAR_PATH_SEPARATOR)
  {
    if (!dirPrefix)
      return false;
    res = dirPrefix;
    res += s;
  }

  #else

  unsigned prefixSize = GetRootPrefixSize(s);
  if (prefixSize != 0)
  {
    if (!AreThereDotsFolders(s + prefixSize))
      return true;
    
    UString rem = fs2us(s + prefixSize);
    if (!ResolveDotsFolders(rem))
      return true; // maybe false;
    res.DeleteFrom(prefixSize);
    res += us2fs(rem);
    return true;
  }

  /*
  FChar c = s[0];
  if (c == 0)
    return true;
  if (c == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
    return true;
  if (c == CHAR_PATH_SEPARATOR && s[1] == CHAR_PATH_SEPARATOR)
    return true;
  if (IsDrivePath(s))
    return true;
  */

  UString curDir;
  if (dirPrefix)
    curDir = fs2us(dirPrefix);
  else
  {
    if (!GetCurDir(curDir))
      return false;
  }
  if (!curDir.IsEmpty() && curDir.Back() != WCHAR_PATH_SEPARATOR)
    curDir += WCHAR_PATH_SEPARATOR;

  unsigned fixedSize = 0;

    if (IsDrivePath(curDir))
      fixedSize = kDrivePrefixSize;
  
  UString temp;
  if (s[0] == CHAR_PATH_SEPARATOR)
  {
    temp = fs2us(s + 1);
  }
  else
  {
    temp += curDir.Ptr(fixedSize);
    temp += fs2us(s);
  }
  if (!ResolveDotsFolders(temp))
    return false;
  curDir.DeleteFrom(fixedSize);
  res = us2fs(curDir);
  res += us2fs(temp);
  
  #endif // UNDER_CE

  return true;
}

static bool GetSuperPathBase(CFSTR s, UString &res)
{
  res.Empty();
  
  FChar c = s[0];
  if (c == 0)
    return true;
  if (c == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
    return true;
  
  if (IsSuperOrDevicePath(s))
  {
    #ifdef LONG_PATH_DOTS_FOLDERS_PARSING
    
    if ((s)[2] == '.')
      return true;

    // we will return true here, so we will try to use these problem paths.

    if (!AreThereDotsFolders(s + kSuperPathPrefixSize))
      return true;
    
    UString temp = fs2us(s);
    unsigned fixedSize = GetRootPrefixSize_Of_SuperPath(temp);
    if (fixedSize == 0)
      return true;

    UString rem = &temp[fixedSize];
    if (!ResolveDotsFolders(rem))
      return true;

    temp.DeleteFrom(fixedSize);
    res += temp;
    res += rem;
    
    #endif

    return true;
  }

  if (c == CHAR_PATH_SEPARATOR)
  {
    if (s[1] == CHAR_PATH_SEPARATOR)
    {
      UString temp = fs2us(s + 2);
      unsigned fixedSize = GetRootPrefixSize_Of_NetworkPath(temp);
      if (fixedSize == 0) // maybe we must ignore that error to allow short network paths?
        return false;
      UString rem = &temp[fixedSize];
      if (!ResolveDotsFolders(rem))
        return false;
      res += kSuperUncPrefix;
      temp.DeleteFrom(fixedSize);
      res += temp;
      res += rem;
      return true;
    }
  }
  else
  {
    if (IsDrivePath(s))
    {
      UString temp = fs2us(s);
      UString rem = &temp[kDrivePrefixSize];
      if (!ResolveDotsFolders(rem))
        return true;
      res += kSuperPathPrefix;
      temp.DeleteFrom(kDrivePrefixSize);
      res += temp;
      res += rem;
      return true;
    }
  }

  UString curDir;
  if (!GetCurDir(curDir))
    return false;
  if (curDir.Back() != WCHAR_PATH_SEPARATOR)
    curDir += WCHAR_PATH_SEPARATOR;

  unsigned fixedSizeStart = 0;
  unsigned fixedSize = 0;
  const wchar_t *superMarker = NULL;
  if (IsSuperPath(curDir))
  {
    fixedSize = GetRootPrefixSize_Of_SuperPath(curDir);
    if (fixedSize == 0)
      return false;
  }
  else
  {
    if (IsDrivePath(curDir))
    {
      superMarker = kSuperPathPrefix;
      fixedSize = kDrivePrefixSize;
    }
    else
    {
      if (curDir[0] != CHAR_PATH_SEPARATOR || curDir[1] != CHAR_PATH_SEPARATOR)
        return false;
//.........这里部分代码省略.........

STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
  COM_TRY_BEGIN
  NCOM::CPropVariant prop;
  if (index >= (UInt32)_archive.Refs.Size())
  {
    index -= _archive.Refs.Size();
    const CBootInitialEntry &be = _archive.BootEntries[index];
    switch (propID)
    {
      case kpidPath:
      {
        AString s = "[BOOT]" STRING_PATH_SEPARATOR;
        if (_archive.BootEntries.Size() != 1)
        {
          char temp[16];
          ConvertUInt32ToString(index + 1, temp);
          s += temp;
          s += '-';
        }
        s += be.GetName();
        prop = s;
        break;
      }
      case kpidIsDir: prop = false; break;
      case kpidSize:
      case kpidPackSize:
        prop = (UInt64)_archive.GetBootItemSize(index);
        break;
    }
  }
  else
  {
    const CRef &ref = _archive.Refs[index];
    const CDir &item = ref.Dir->_subItems[ref.Index];
    switch (propID)
    {
      case kpidPath:
        // if (item.FileId.GetCapacity() >= 0)
        {
          UString s;
          if (_archive.IsJoliet())
            item.GetPathU(s);
          else
            s = MultiByteToUnicodeString(item.GetPath(_archive.IsSusp, _archive.SuspSkipSize), CP_OEMCP);

          if (s.Len() >= 2 && s[s.Len() - 2] == ';' && s.Back() == '1')
            s.DeleteFrom(s.Len() - 2);
          
          if (!s.IsEmpty() && s.Back() == L'.')
            s.DeleteBack();

          NItemName::ConvertToOSName2(s);
          prop = s;
        }
        break;
      case kpidIsDir: prop = item.IsDir(); break;
      case kpidSize:
      case kpidPackSize:
        if (!item.IsDir())
          prop = (UInt64)ref.TotalSize;
        break;
      case kpidMTime:
      {
        FILETIME utc;
        if (item.DateTime.GetFileTime(utc))
          prop = utc;
        break;
      }
    }
  }
  prop.Detach(value);
  return S_OK;
  COM_TRY_END
}