Differential D22653 Diff 62759 node_modules/argparse/lib/action/append.js

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node_modules/argparse/lib/action/append.js

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		1		/:nodoc:
		2		* class ActionAppend
		3		*
		4		* This action stores a list, and appends each argument value to the list.
		5		* This is useful to allow an option to be specified multiple times.
		6		* This class inherided from [[Action]]
		7		*
		8		**/
		9
		10		'use strict';
		11
		12		var util = require('util');
		13
		14		var Action = require('../action');
		15
		16		// Constants
		17		var c = require('../const');
		18
		19		/:nodoc:
		20		* new ActionAppend(options)
		21		* - options (object): options hash see [[Action.new]]
		22		*
		23		* Note: options.nargs should be optional for constants
		24		* and more then zero for other
		25		**/
		26		var ActionAppend = module.exports = function ActionAppend(options) {
		27		options = options \|\| {};
		28		if (this.nargs <= 0) {
		29		throw new Error('nargs for append actions must be > 0; if arg ' +
		30		'strings are not supplying the value to append, ' +
		31		'the append const action may be more appropriate');
		32		}
		33		if (!!this.constant && this.nargs !== c.OPTIONAL) {
		34		throw new Error('nargs must be OPTIONAL to supply const');
		35		}
		36		Action.call(this, options);
		37		};
		38		util.inherits(ActionAppend, Action);
		39
		40		/:nodoc:
		41		* ActionAppend#call(parser, namespace, values, optionString) -> Void
		42		* - parser (ArgumentParser): current parser
		43		* - namespace (Namespace): namespace for output data
		44		* - values (Array): parsed values
		45		* - optionString (Array): input option string(not parsed)
		46		*
		47		* Call the action. Save result in namespace object
		48		**/
		49		ActionAppend.prototype.call = function (parser, namespace, values) {
		50		var items = (namespace[this.dest] \|\| []).slice();
		51		items.push(values);
		52		namespace.set(this.dest, items);
		53		};