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/*: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();
};
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