Method NewAppendableFile

src/leveldb/util/env_windows.cc:469–485

  }

  Status NewAppendableFile(const std::string& filename,
                           WritableFile** result) override {
    DWORD desired_access = FILE_APPEND_DATA;
    DWORD share_mode = 0;  // Exclusive access.
    auto wFilename = toUtf16(filename);
    ScopedHandle handle = ::CreateFileW(
        wFilename.c_str(), desired_access, share_mode,
        /*lpSecurityAttributes=*/nullptr, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL,
        /*hTemplateFile=*/nullptr);
    if (!handle.is_valid()) {
      *result = nullptr;
      return WindowsError(filename, ::GetLastError());
    }

    *result = new WindowsWritableFile(filename, std::move(handle));
    return Status::OK();
  }

  bool FileExists(const std::string& filename) override {
    auto wFilename = toUtf16(filename);