gistfile1.cpp

Glib::ustring NumberConverter::get_result() const {
  std::stringstream output;

  long intermediate = 0;

  switch (_info.from) {
    case NumberSystem::BASE_2:
      intermediate = strtol(_input.data(), NULL, 2);
      break;
    case NumberSystem::BASE_8:
      intermediate = strtol(_input.data(), NULL, 8);
      break;
    case NumberSystem::BASE_10:
      intermediate = strtol(_input.data(), NULL, 10);
      break;
    case NumberSystem::BASE_16:
      intermediate = strtol(_input.data(), NULL, 16);
      break;
  }

  switch (_info.to) {
    case NumberSystem::BASE_8:
      output << std::oct << intermediate;
      break;
    case NumberSystem::BASE_16:
      output << std::hex << intermediate;
      break;
    case NumberSystem::BASE_10:
      output << std::dec << intermediate;
      break;
    case NumberSystem::BASE_2:
      auto str = std::bitset<16>(intermediate).to_string();
      for (auto it = str.begin(); it != str.end(); it++)
        if (*it == '1' || it+1 == str.end()) { str = std::string(it, str.end()); break; }
      output << str;
      break;
  }

  assert(output.str().size() > 0);
  
  return output.str();
}