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 liuqimichale
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/*:nodoc:*
* class ActionVersion
*
* Support action for printing program version
* This class inherited from [[Action]]
**/
'use strict';
var util = require('util');
var Action = require('../action');
//
// Constants
//
var c = require('../const');
/*:nodoc:*
* new ActionVersion(options)
* - options (object): options hash see [[Action.new]]
*
**/
var ActionVersion = module.exports = function ActionVersion(options) {
options = options || {};
options.defaultValue = (options.defaultValue ? options.defaultValue : c.SUPPRESS);
options.dest = (options.dest || c.SUPPRESS);
options.nargs = 0;
this.version = options.version;
Action.call(this, options);
};
util.inherits(ActionVersion, Action);
/*:nodoc:*
* ActionVersion#call(parser, namespace, values, optionString) -> Void
* - parser (ArgumentParser): current parser
* - namespace (Namespace): namespace for output data
* - values (Array): parsed values
* - optionString (Array): input option string(not parsed)
*
* Print version and exit
**/
ActionVersion.prototype.call = function (parser) {
var version = this.version || parser.version;
var formatter = parser._getFormatter();
formatter.addText(version);
parser.exit(0, formatter.formatHelp());
};
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