runCommand method

@override Future<int?> runCommand(ArgResults topLevelResults)

Runs the command specified by topLevelResults.

This is notionally a protected method. It may be overridden or called from subclasses, but it shouldn't be called externally.

It's useful to override this to handle global flags and/or wrap the entire command in a block. For example, you might handle the --verbose flag here to enable verbose logging before running the command.

This returns the return value of Command.run.

Implementation

@override
Future<int?> runCommand(ArgResults topLevelResults) async {
  final version = topLevelResults[_argVersion] as bool;

  print.setupRootLogger();

  await _checkForUpdates();

  if (version) {
    _out.info('v$packageVersion');
    return 0;
  } else {
    return super.runCommand(topLevelResults);
  }
}