/*
* class ActionAppend * * This action stores a list, and appends each argument value to the list. * This is useful to allow an option to be specified multiple times. * This class inherided from [[Action]] * **/
'use strict';
var util = require('util');
var Action = require('../action');
// Constants var c = require('../const');
/*
* new ActionAppend(options) * - options (object): options hash see [[Action.new]] * * Note: options.nargs should be optional for constants * and more then zero for other **/
var ActionAppend = module.exports = function ActionAppend(options) {
options = options || {}; if (this.nargs <= 0) { throw new Error('nargs for append actions must be > 0; if arg ' + 'strings are not supplying the value to append, ' + 'the append const action may be more appropriate'); } if (!!this.constant && this.nargs !== c.OPTIONAL) { throw new Error('nargs must be OPTIONAL to supply const'); } Action.call(this, options);
}; util.inherits(ActionAppend, Action);
/*
* ActionAppend#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) * * Call the action. Save result in namespace object **/
ActionAppend.prototype.call = function (parser, namespace, values) {
var items = (namespace[this.dest] || []).slice(); items.push(values); namespace.set(this.dest, items);
};