@doodad-js/xml/src/server/Tools_Xml_Parsers_Libxml2_Loader.js

XML Parser

//! BEGIN_MODULE()

//! REPLACE_BY("// Copyright 2015-2018 Claude Petit, licensed under Apache License version 2.0\n", true)
	// doodad-js - Object-oriented programming framework
	// File: Tools_Xml_Parsers_Libxml2_Loader.js - Loader for the libxml2 parser (server-side with NodeJS)
	// Project home: https://github.com/doodadjs/
	// Author: Claude Petit, Quebec city
	// Contact: doodadjs [at] gmail.com
	// Note: I'm still in alpha-beta stage, so expect to find some bugs or incomplete parts !
	// License: Apache V2
	//
	//	Copyright 2015-2018 Claude Petit
	//
	//	Licensed under the Apache License, Version 2.0 (the "License");
	//	you may not use this file except in compliance with the License.
	//	You may obtain a copy of the License at
	//
	//		http://www.apache.org/licenses/LICENSE-2.0
	//
	//	Unless required by applicable law or agreed to in writing, software
	//	distributed under the License is distributed on an "AS IS" BASIS,
	//	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	//	See the License for the specific language governing permissions and
	//	limitations under the License.
//! END_REPLACE()

//! IF_SET("mjs")
//! ELSE()
	"use strict";
//! END_IF()

exports.add = function add(modules) {
	modules = (modules || {});
	modules['Doodad.Tools.Xml.Parsers.Libxml2.Loader'] = {
		version: /*! REPLACE_BY(TO_SOURCE(VERSION(MANIFEST("name")))) */ null /*! END_REPLACE()*/,
		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,
				libxml2 = xmlParsers.Libxml2,
				libxml2Loader = libxml2.Loader;

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

			// <FUTURE> Thread context
			const __Internal__ = {
				libxml2: null,
			};

			//===================================
			// libxml2 Parser
			//===================================

			// NOTE: libxml2 is optional
			libxml2Loader.ADD('get', root.DD_DOC(
				//! REPLACE_IF(IS_UNSET('debug'), "null")
					{
						author: "Claude Petit",
						revision: 0,
						params: null,
						returns: 'object',
						description: "Returns parser from the libxml2 library when available. Otherwise, returns 'null'.",
					}
				//! END_REPLACE()
				, function get() {
					return __Internal__.libxml2;
				}));


			//===================================
			// Init
			//===================================
			return function init(/*optional*/options) {
				// <PRB> Emscripten calls "process.exit" on "unhandledRejection" !!!
				const unhandledListeners = process.listeners('unhandledRejection');
				const handledListeners = process.listeners('rejectionHandled');

				return modules.import('@doodad-js/xml/lib/libxml2/libxml2.js')
					.then(function(exports) {
						process.listeners('unhandledRejection').forEach(function(listener) {
							if (tools.indexOf(unhandledListeners, listener) < 0) {
								process.removeListener('unhandledRejection', listener);
							};
						});
						process.listeners('rejectionHandled').forEach(function(listener) {
							if (tools.indexOf(handledListeners, listener) < 0) {
								process.removeListener('rejectionHandled', listener);
							};
						});

						__Internal__.libxml2 = exports.default;
					})
					.catch(function(err) {
						// Do nothing
					});
			};
		},
	};
	return modules;
};

//! END_MODULE()