/*
* class ActionHelp * * Support action for printing help * This class inherided from [[Action]] **/
'use strict';
var util = require('util');
var Action = require('../action');
// Constants var c = require('../const');
/*
* new ActionHelp(options) * - options (object): options hash see [[Action.new]] * **/
var ActionHelp = module.exports = function ActionHelp(options) {
options = options || {}; if (options.defaultValue !== null) { options.defaultValue = options.defaultValue; } else { options.defaultValue = c.SUPPRESS; } options.dest = (options.dest !== null ? options.dest : c.SUPPRESS); options.nargs = 0; Action.call(this, options);
}; util.inherits(ActionHelp, Action);
/*
* ActionHelp#call(parser, namespace, values, optionString) * - parser (ArgumentParser): current parser * - namespace (Namespace): namespace for output data * - values (Array): parsed values * - optionString (Array): input option string(not parsed) * * Print help and exit **/
ActionHelp.prototype.call = function (parser) {
parser.printHelp(); parser.exit();
};