Class TomlConfig

java/src/org/openqa/selenium/grid/config/TomlConfig.java:40–146

import org.tomlj.TomlTable;

public class TomlConfig implements Config {

  private final TomlParseResult toml;

  public TomlConfig(Reader reader) {
    try {
      toml = Toml.parse(reader);

      if (toml.hasErrors()) {
        String error =
            toml.errors().stream().map(TomlParseError::toString).collect(Collectors.joining("\n"));

        throw new ConfigException(error);
      }
    } catch (IOException e) {
      throw new ConfigException("Unable to read TOML.", e);
    } catch (TomlParseError e) {
      throw new ConfigException(
          e.getCause()
              + "\n Validate the config using https://www.toml-lint.com/. "
              + "\n Refer to https://toml.io/en/ for TOML usage guidance. ");
    }
  }

  public static Config from(Path path) {
    Require.nonNull("Path to read", path);

    try (Reader reader = Files.newBufferedReader(path)) {
      return new TomlConfig(reader);
    } catch (IOException e) {
      throw new ConfigException(String.format("Unable to parse: %s", path), e);
    }
  }

  @Override
  public Optional<List<String>> getAll(String section, String option) {
    Require.nonNull("Section to read", section);
    Require.nonNull("Option to read", option);

    if (!toml.contains(section)) {
      return Optional.empty();
    }

    Object raw = toml.get(section);
    if (!(raw instanceof TomlTable)) {
      throw new ConfigException(String.format("Section %s is not a section! %s", section, raw));
    }

    TomlTable table = toml.getTable(section);
    Object value = null;
    if (table != null) {
      value = table.get(option);
    }

    if (value == null) {
      return Optional.empty();
    }