| /*:nodoc:* |
| * 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'); |
| |
| /*:nodoc:* |
| * 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); |
| |
| /*:nodoc:* |
| * 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(); |
| }; |