CLIConfig.fromArguments constructor

CLIConfig.fromArguments(List<String> arguments)

Factory method to parse and validate arguments.

Implementation

factory CLIConfig.fromArguments(List<String> arguments) {
  // If the number of arguments is less than 2, throw an error.
  if (arguments.length < 2) {
    throw ArgumentError('Usage: dart_to_docusaurus <project_directory> <output_directory> [--verbose]');
  }

  // Extract the project directory, output directory, and optional verbose flag.
  final String projectDirectory = arguments[0];

  // Extract the project directory, output directory, and optional verbose flag.
  final String outputDirectory = arguments[1];

  // Determines if the verbose flag is present in the arguments.
  final bool verbose = arguments.contains('--verbose');

  // If either the project directory or output directory is empty, throw an error.
  if (projectDirectory.isEmpty || outputDirectory.isEmpty) {
    throw ArgumentError('Project directory and output directory must be specified and non-empty.');
  }

  // Check if a file exists at the project directory path.
  if (!Directory(projectDirectory).existsSync()) {
    throw ArgumentError('Project directory does not exist.');
  }

  return CLIConfig(
    projectDirectory: projectDirectory,
    outputDirectory: outputDirectory,
    verbose: verbose,
  );
}