mirror of https://github.com/jkjoy/sunpeiwen.git
48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
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/*:nodoc:*
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* class ActionHelp
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*
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* Support action for printing help
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* This class inherided from [[Action]]
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**/
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'use strict';
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var util = require('util');
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var Action = require('../action');
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// Constants
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var c = require('../const');
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/*:nodoc:*
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* new ActionHelp(options)
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* - options (object): options hash see [[Action.new]]
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*
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**/
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var ActionHelp = module.exports = function ActionHelp(options) {
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options = options || {};
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if (options.defaultValue !== null) {
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options.defaultValue = options.defaultValue;
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} else {
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options.defaultValue = c.SUPPRESS;
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}
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options.dest = (options.dest !== null ? options.dest : c.SUPPRESS);
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options.nargs = 0;
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Action.call(this, options);
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};
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util.inherits(ActionHelp, Action);
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/*:nodoc:*
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* ActionHelp#call(parser, namespace, values, optionString)
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* - parser (ArgumentParser): current parser
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* - namespace (Namespace): namespace for output data
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* - values (Array): parsed values
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* - optionString (Array): input option string(not parsed)
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*
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* Print help and exit
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**/
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ActionHelp.prototype.call = function (parser) {
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parser.printHelp();
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parser.exit();
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};
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