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