Method ToNarrow

Source/cmWindowsRegistry.cxx:237–267

}

std::string KeyHandler::ToNarrow(wchar_t const* wstr, int size)
{
  std::string str;

  if (size == 0 || (size == -1 && wstr[0] == L'\0')) {
    return str;
  }

  auto const length =
    WideCharToMultiByte(KWSYS_ENCODING_DEFAULT_CODEPAGE, 0, wstr, size,
                        nullptr, 0, nullptr, nullptr);
  if (length > 0) {
    auto data = cm::make_unique<char[]>(length);
    auto const r =
      WideCharToMultiByte(KWSYS_ENCODING_DEFAULT_CODEPAGE, 0, wstr, size,
                          data.get(), length, nullptr, nullptr);
    if (r > 0) {
      if (size == -1) {
        str = std::string(data.get());
      } else {
        str = std::string(data.get(), length);
      }
    } else {
      throw registry_error(FormatSystemError(GetLastError()));
    }
  } else {
    throw registry_error(FormatSystemError(GetLastError()));
  }

  return str;
}

std::string KeyHandler::ReadValue(cm::string_view name,
                                  ValueTypeSet supportedTypes,