@doodad-js/xml/browserify/server/Tools_Xml_Parsers_Sax_Loader.js

XML Parser

// Copyright 2015-2018 Claude Petit, licensed under Apache License version 2.0

	"use strict";

exports.add = function add(modules) {
	modules = (modules || {});
	modules['Doodad.Tools.Xml.Parsers.Sax.Loader'] = {
		version: '5.2.0b',
		dependencies: [
			'Doodad.Tools.Xml',
		],

		create: function create(root, /*optional*/_options) {
			//===================================
			// Get namespaces
			//===================================

			const doodad = root.Doodad,
				//types = doodad.Types,
				tools = doodad.Tools,
				modules = doodad.Modules,
				xml = tools.Xml,
				xmlParsers = xml.Parsers,
				sax = xmlParsers.Sax,
				saxLoader = sax.Loader;

			//===================================
			// Internal
			//===================================

			// <FUTURE> Thread context
			const __Internal__ = {
				saxlib: null,
			};

			//===================================
			// SAX Parser
			//===================================

			// NOTE: SAX is optional
			saxLoader.ADD('get', root.DD_DOC(
									{
						author: "Claude Petit",
						revision: 1,
						params: null,
						returns: 'object',
						description: "Returns parser from the SAX-JS library when available. Otherwise, returns 'null'.",
					}
								, function get() {
					return __Internal__.saxlib;
				}));


			//===================================
			// Init
			//===================================
			return function init(/*optional*/options) {
				//return modules.import('sax')
				//	.catch(function(err) {
				//		// Do nothing.
				//	});
				return modules.import('sax')
					.catch(function(err) {
						// <PRB> NPM doesn't flatten packages
						return modules.import('@doodad-js/xml/node_modules/sax');
					})
					.then(function(exports) {
						__Internal__.saxlib = exports.default;
					})
					.catch(function(err) {
						// Do nothing.
					});
			};
		},
	};
	return modules;
};