Method set_host_or_hostname

test-app/runtime/src/main/cpp/ada/ada.cpp:12678–12789

template <bool override_hostname>
bool url::set_host_or_hostname(const std::string_view input) {
  if (has_opaque_path) {
    return false;
  }

  std::optional<std::string> previous_host = host;
  std::optional<uint16_t> previous_port = port;

  size_t host_end_pos = input.find('#');
  std::string _host(input.data(), host_end_pos != std::string_view::npos
                                      ? host_end_pos
                                      : input.size());
  helpers::remove_ascii_tab_or_newline(_host);
  std::string_view new_host(_host);

  // If url's scheme is "file", then set state to file host state, instead of
  // host state.
  if (type != ada::scheme::type::FILE) {
    std::string_view host_view(_host.data(), _host.length());
    auto [location, found_colon] =
        helpers::get_host_delimiter_location(is_special(), host_view);

    // Otherwise, if c is U+003A (:) and insideBrackets is false, then:
    // Note: the 'found_colon' value is true if and only if a colon was
    // encountered while not inside brackets.
    if (found_colon) {
      // If buffer is the empty string, host-missing validation error, return
      // failure.
      std::string_view buffer = host_view.substr(0, location);
      if (buffer.empty()) {
        return false;
      }

      // If state override is given and state override is hostname state, then
      // return failure.
      if constexpr (override_hostname) {
        return false;
      }

      // Let host be the result of host parsing buffer with url is not special.
      bool succeeded = parse_host(buffer);
      if (!succeeded) {
        host = std::move(previous_host);
        update_base_port(previous_port);
        return false;
      }

      // Set url's host to host, buffer to the empty string, and state to port
      // state.
      std::string_view port_buffer = new_host.substr(location + 1);
      if (!port_buffer.empty()) {
        set_port(port_buffer);
      }
      return true;
    }
    // Otherwise, if one of the following is true:
    // - c is the EOF code point, U+002F (/), U+003F (?), or U+0023 (#)
    // - url is special and c is U+005C (\)