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Basic Functions (For userscripts)

Useful functions for myself

目前為 2024-09-08 提交的版本，檢視 最新版本。

此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.gf.qytechs.cn/scripts/456034/1443751/Basic%20Functions%20%28For%20userscripts%29.js 

  1. /* eslint-disable no-multi-spaces */
  2. /* eslint-disable no-return-assign */
  3.  
  4. // ==UserScript==
  5. // @name               Basic Functions (For userscripts)
  6. // @name:zh-CN         常用函数（用户脚本）
  7. // @name:en            Basic Functions (For userscripts)
  8. // @namespace          PY-DNG Userscripts
  9. // @version            0.8.12
  10. // @description        Useful functions for myself
  11. // @description:zh-CN  自用函数
  12. // @description:en     Useful functions for myself
  13. // @author             PY-DNG
  14. // @license            GPL-3.0-or-later
  15. // ==/UserScript==
  16.  
  17. // Note: version 0.8.2.1 is modified just the license and it's not uploaded to GF yet 23-11-26 15:03
  18. // Note: version 0.8.3.1 is added just the description of parseArgs and has not uploaded to GF yet 24-02-03 18:55
  19.  
  20. let [
  21. 	// Console & Debug
  22. 	LogLevel, DoLog, Err, Assert,
  23.  
  24. 	// DOM
  25. 	$, $All, $CrE, $AEL, $$CrE, addStyle, detectDom, destroyEvent,
  26.  
  27. 	// Data
  28. 	copyProp, copyProps, parseArgs, escJsStr, replaceText,
  29.  
  30. 	// Environment & Browser
  31. 	getUrlArgv, dl_browser, dl_GM,
  32.  
  33. 	// Logic & Task
  34. 	AsyncManager, queueTask, testChecker, registerChecker, loadFuncs
  35. ] = (function() {
  36. 	/**
  37. 	 * level defination for DoLog function, bigger ones has higher possibility to be printed in console
  38. 	 * @property {Number} None - 0
  39. 	 * @property {Number} Error - 1
  40. 	 * @property {Number} Success - 2
  41. 	 * @property {Number} Warning - 3
  42. 	 * @property {Number} Info - 4
  43. 	 */
  44. 	/**
  45. 	 * Logger with level and logger function specification
  46. 	 * @param {Number} [level=LogLevel.Info] - level specified in LogLevel object
  47. 	 * @param {String} content - log content
  48. 	 * @param {String} [logger=log] - which log function to use (in window.console[logger])
  49. 	 */
  50. 	const [LogLevel, DoLog] = (function() {
  51. 		const LogLevel = {
  52. 			None: 0,
  53. 			Error: 1,
  54. 			Success: 2,
  55. 			Warning: 3,
  56. 			Info: 4,
  57. 		};
  58.  
  59. 		return [LogLevel, DoLog];
  60. 		function DoLog() {
  61. 			// Get window
  62. 			const win = (typeof(unsafeWindow) === 'object' && unsafeWindow !== null) ? unsafeWindow : window;
  63.  
  64. 			const LogLevelMap = {};
  65. 			LogLevelMap[LogLevel.None] = {
  66. 				prefix: '',
  67. 				color: 'color:#ffffff'
  68. 			}
  69. 			LogLevelMap[LogLevel.Error] = {
  70. 				prefix: '[Error]',
  71. 				color: 'color:#ff0000'
  72. 			}
  73. 			LogLevelMap[LogLevel.Success] = {
  74. 				prefix: '[Success]',
  75. 				color: 'color:#00aa00'
  76. 			}
  77. 			LogLevelMap[LogLevel.Warning] = {
  78. 				prefix: '[Warning]',
  79. 				color: 'color:#ffa500'
  80. 			}
  81. 			LogLevelMap[LogLevel.Info] = {
  82. 				prefix: '[Info]',
  83. 				color: 'color:#888888'
  84. 			}
  85. 			LogLevelMap[LogLevel.Elements] = {
  86. 				prefix: '[Elements]',
  87. 				color: 'color:#000000'
  88. 			}
  89.  
  90. 			// Current log level
  91. 			DoLog.logLevel = (win.isPY_DNG && win.userscriptDebugging) ? LogLevel.Info : LogLevel.Warning; // Info Warning Success Error
  92.  
  93. 			// Log counter
  94. 			DoLog.logCount === undefined && (DoLog.logCount = 0);
  95.  
  96. 			// Get args
  97. 			let [level, logContent, logger] = parseArgs([...arguments], [
  98. 				[2],
  99. 				[1,2],
  100. 				[1,2,3]
  101. 			], [LogLevel.Info, 'DoLog initialized.', 'log']);
  102.  
  103. 			let msg = '%c' + LogLevelMap[level].prefix + (typeof GM_info === 'object' ? `[${GM_info.script.name}]` : '') + (LogLevelMap[level].prefix ? ' ' : '');
  104. 			let subst = LogLevelMap[level].color;
  105.  
  106. 			switch (typeof(logContent)) {
  107. 				case 'string':
  108. 					msg += '%s';
  109. 					break;
  110. 				case 'number':
  111. 					msg += '%d';
  112. 					break;
  113. 				default:
  114. 					msg += '%o';
  115. 					break;
  116. 			}
  117.  
  118. 			// Log when log level permits
  119. 			if (level <= DoLog.logLevel) {
  120. 				// Log to console when log level permits
  121. 				if (level <= DoLog.logLevel) {
  122. 					if (++DoLog.logCount > 512) {
  123. 						console.clear();
  124. 						DoLog.logCount = 0;
  125. 					}
  126. 					console[logger](msg, subst, logContent);
  127. 				}
  128. 			}
  129. 		}
  130. 	}) ();
  131.  
  132. 	// type: [Error, TypeError]
  133. 	/**
  134. 	 * @typedef {Number} ErrorType
  135. 	 *
  136. 	 */
  137. 	/**
  138. 	 * Throw an error
  139. 	 * @param {String} msg - the error message
  140. 	 * @param {ErrorType} [type=0] - error type, which also means the Error constructor
  141. 	 */
  142. 	function Err(msg, type=0) {
  143. 		throw new [Error, TypeError][type]((typeof GM_info === 'object' ? `[${GM_info.script.name}]` : '') + msg);
  144. 	}
  145.  
  146. 	function Assert(val, errmsg, errtype) {
  147. 		val || Err(errmsg, errtype);
  148. 	}
  149.  
  150. 	// Basic functions
  151. 	// querySelector
  152. 	function $() {
  153. 		switch(arguments.length) {
  154. 			case 2:
  155. 				return arguments[0].querySelector(arguments[1]);
  156. 				break;
  157. 			default:
  158. 				return document.querySelector(arguments[0]);
  159. 		}
  160. 	}
  161. 	// querySelectorAll
  162. 	function $All() {
  163. 		switch(arguments.length) {
  164. 			case 2:
  165. 				return arguments[0].querySelectorAll(arguments[1]);
  166. 				break;
  167. 			default:
  168. 				return document.querySelectorAll(arguments[0]);
  169. 		}
  170. 	}
  171. 	// createElement
  172. 	function $CrE() {
  173. 		switch(arguments.length) {
  174. 			case 2:
  175. 				return arguments[0].createElement(arguments[1]);
  176. 				break;
  177. 			default:
  178. 				return document.createElement(arguments[0]);
  179. 		}
  180. 	}
  181. 	// addEventListener
  182. 	function $AEL(...args) {
  183. 		const target = args.shift();
  184. 		return target.addEventListener.apply(target, args);
  185. 	}
  186. 	function $$CrE() {
  187. 		const [tagName, props, attrs, classes, styles, listeners] = parseArgs([...arguments], [
  188. 			function(args, defaultValues) {
  189. 				const arg = args[0];
  190. 				return {
  191. 					'string': () => [arg, ...defaultValues.filter((arg, i) => i > 0)],
  192. 					'object': () => ['tagName', 'props', 'attrs', 'classes', 'styles', 'listeners'].map((prop, i) => arg.hasOwnProperty(prop) ? arg[prop] : defaultValues[i])
  193. 				}[typeof arg]();
  194. 			},
  195. 			[1,2],
  196. 			[1,2,3],
  197. 			[1,2,3,4],
  198. 			[1,2,3,4,5]
  199. 		], ['div', {}, {}, [], {}, []]);
  200. 		const elm = $CrE(tagName);
  201. 		for (const [name, val] of Object.entries(props)) {
  202. 			elm[name] = val;
  203. 		}
  204. 		for (const [name, val] of Object.entries(attrs)) {
  205. 			elm.setAttribute(name, val);
  206. 		}
  207. 		for (const cls of Array.isArray(classes) ? classes : [classes]) {
  208. 			elm.classList.add(cls);
  209. 		}
  210. 		for (const [name, val] of Object.entries(styles)) {
  211. 			elm.style[name] = val;
  212. 		}
  213. 		for (const listener of listeners) {
  214. 			$AEL(...[elm, ...listener]);
  215. 		}
  216. 		return elm;
  217. 	}
  218.  
  219. 	// Append a style text to document(<head>) with a <style> element
  220. 	// arguments: css | css, id | parentElement, css, id
  221. 	// remove old one when id duplicates with another element in document
  222.     function addStyle() {
  223.     	// Get arguments
  224.     	const [parentElement, css, id] = parseArgs([...arguments], [
  225.     		[2],
  226.     		[2,3],
  227.     		[1,2,3]
  228.     	], [document.head, '', null]);
  229.  
  230.     	// Make <style>
  231. 		const style = $CrE("style");
  232. 		style.textContent = css;
  233. 		id !== null && (style.id = id);
  234. 		id !== null && $(`#${id}`) && $(`#${id}`).remove();
  235.  
  236. 		// Append to parentElement
  237.         parentElement.appendChild(style);
  238. 		return style;
  239.     }
  240.  
  241. 	// Get callback when specific dom/element loaded
  242. 	// detectDom({[root], selector, callback[, once]}) | detectDom(selector, callback) | detectDom(root, selector, callback) | detectDom(root, selector, callback, attributes) | detectDom(root, selector, callback, attributes, once)
  243. 	// Supports both callback for multiple detection, and promise for one-time detection.
  244. 	// By default promise mode is preferred, meaning `callback` argument should be provided explicitly when using callback
  245. 	// mode (by adding `callback` property in details object, or provide all 4 arguments where callback should be the last)
  246. 	// This behavior is different from versions that equals to or older than 0.8.4.2, so be careful when using it.
  247. 	function detectDom() {
  248. 		let [selectors, root, attributes, callback] = parseArgs([...arguments], [
  249. 			function(args, defaultValues) {
  250. 				const arg = args[0];
  251. 				return {
  252. 					'string': () => [arg, ...defaultValues.filter((arg, i) => i > 0)],
  253. 					'object': () => ['selector', 'root', 'attributes', 'callback'].map((prop, i) => arg.hasOwnProperty(prop) ? arg[prop] : defaultValues[i])
  254. 				}[typeof arg]();
  255. 			},
  256. 			[2,1],
  257. 			[2,1,3],
  258. 			[2,1,3,4],
  259. 		], [[''], document, false, null]);
  260. 		!Array.isArray(selectors) && (selectors = [selectors]);
  261.  
  262. 		if (select(root, selectors)) {
  263. 			for (const elm of selectAll(root, selectors)) {
  264. 				if (callback) {
  265. 					callback(elm);
  266. 				} else {
  267. 					return Promise.resolve(elm);
  268. 				}
  269. 			}
  270. 		}
  271.  
  272. 		const observer = new MutationObserver(mCallback);
  273. 		observer.observe(root, {
  274. 			childList: true,
  275. 			subtree: true,
  276. 			attributes,
  277. 		});
  278.  
  279. 		let isPromise = !callback;
  280. 		return callback ? observer : new Promise((resolve, reject) => callback = resolve);
  281.  
  282. 		function mCallback(mutationList, observer) {
  283. 			const addedNodes = mutationList.reduce((an, mutation) => {
  284. 				switch (mutation.type) {
  285. 					case 'childList':
  286. 						an.push(...mutation.addedNodes);
  287. 						break;
  288. 					case 'attributes':
  289. 						an.push(mutation.target);
  290. 						break;
  291. 				}
  292. 				return an;
  293. 			}, []);
  294. 			const addedSelectorNodes = addedNodes.reduce((nodes, anode) => {
  295. 				if (anode.matches && match(anode, selectors)) {
  296. 					nodes.add(anode);
  297. 				}
  298. 				const childMatches = anode.querySelectorAll ? selectAll(anode, selectors) : [];
  299. 				for (const cm of childMatches) {
  300. 					nodes.add(cm);
  301. 				}
  302. 				return nodes;
  303. 			}, new Set());
  304. 			for (const node of addedSelectorNodes) {
  305. 				callback(node);
  306. 				isPromise && observer.disconnect();
  307. 			}
  308. 		}
  309.  
  310. 		function selectAll(elm, selectors) {
  311. 			!Array.isArray(selectors) && (selectors = [selectors]);
  312. 			return selectors.map(selector => [...$All(elm, selector)]).reduce((all, arr) => {
  313. 				all.push(...arr);
  314. 				return all;
  315. 			}, []);
  316. 		}
  317.  
  318. 		function select(elm, selectors) {
  319. 			const all = selectAll(elm, selectors);
  320. 			return all.length ? all[0] : null;
  321. 		}
  322.  
  323. 		function match(elm, selectors) {
  324. 			return !!elm.matches && selectors.some(selector => elm.matches(selector));
  325. 		}
  326. 	}
  327.  
  328. 	// Just stopPropagation and preventDefault
  329. 	function destroyEvent(e) {
  330. 		if (!e) {return false;};
  331. 		if (!e instanceof Event) {return false;};
  332. 		e.stopPropagation();
  333. 		e.preventDefault();
  334. 	}
  335.  
  336. 	// Object1[prop] ==> Object2[prop]
  337. 	function copyProp(obj1, obj2, prop) {obj1[prop] !== undefined && (obj2[prop] = obj1[prop]);}
  338. 	function copyProps(obj1, obj2, props) {(props || Object.keys(obj1)).forEach((prop) => (copyProp(obj1, obj2, prop)));}
  339.  
  340. 	// Argument parser with sorting and defaultValue support
  341. 	function parseArgs(args, rules, defaultValues=[]) {
  342. 		// args and rules should be array, but not just iterable (string is also iterable)
  343. 		if (!Array.isArray(args) || !Array.isArray(rules)) {
  344. 			throw new TypeError('parseArgs: args and rules should be array')
  345. 		}
  346.  
  347. 		// fill rules[0]
  348. 		(!Array.isArray(rules[0]) || rules[0].length === 1) && rules.splice(0, 0, []);
  349.  
  350. 		// max arguments length
  351. 		const count = rules.length - 1;
  352.  
  353. 		// args.length must <= count
  354. 		if (args.length > count) {
  355. 			throw new TypeError(`parseArgs: args has more elements(${args.length}) longer than ruless'(${count})`);
  356. 		}
  357.  
  358. 		// rules[i].length should be === i if rules[i] is an array, otherwise it should be a function
  359. 		for (let i = 1; i <= count; i++) {
  360. 			const rule = rules[i];
  361. 			if (Array.isArray(rule)) {
  362. 				if (rule.length !== i) {
  363. 					throw new TypeError(`parseArgs: rules[${i}](${rule}) should have ${i} numbers, but given ${rules[i].length}`);
  364. 				}
  365. 				if (!rule.every((num) => (typeof num === 'number' && num <= count))) {
  366. 					throw new TypeError(`parseArgs: rules[${i}](${rule}) should contain numbers smaller than count(${count}) only`);
  367. 				}
  368. 			} else if (typeof rule !== 'function') {
  369. 				throw new TypeError(`parseArgs: rules[${i}](${rule}) should be an array or a function.`)
  370. 			}
  371. 		}
  372.  
  373. 		// Parse
  374. 		const rule = rules[args.length];
  375. 		let parsed;
  376. 		if (Array.isArray(rule)) {
  377. 			parsed = [...defaultValues];
  378. 			for (let i = 0; i < rule.length; i++) {
  379. 				parsed[rule[i]-1] = args[i];
  380. 			}
  381. 		} else {
  382. 			parsed = rule(args, defaultValues);
  383. 		}
  384. 		return parsed;
  385. 	}
  386.  
  387. 	// escape str into javascript written format
  388. 	function escJsStr(str, quote='"') {
  389. 		str = str.replaceAll('\\', '\\\\').replaceAll(quote, '\\' + quote).replaceAll('\t', '\\t');
  390. 		str = quote === '`' ? str.replaceAll(/(\$\{[^\}]*\})/g, '\\$1') : str.replaceAll('\r', '\\r').replaceAll('\n', '\\n');
  391. 		return quote + str + quote;
  392. 	}
  393.  
  394. 	// Replace model text with no mismatching of replacing replaced text
  395. 	// e.g. replaceText('aaaabbbbccccdddd', {'a': 'b', 'b': 'c', 'c': 'd', 'd': 'e'}) === 'bbbbccccddddeeee'
  396. 	//      replaceText('abcdAABBAA', {'BB': 'AA', 'AAAAAA': 'This is a trap!'}) === 'abcdAAAAAA'
  397. 	//      replaceText('abcd{AAAA}BB}', {'{AAAA}': '{BB', '{BBBB}': 'This is a trap!'}) === 'abcd{BBBB}'
  398. 	//      replaceText('abcd', {}) === 'abcd'
  399. 	/* Note:
  400. 	    replaceText will replace in sort of replacer's iterating sort
  401. 	    e.g. currently replaceText('abcdAABBAA', {'BBAA': 'TEXT', 'AABB': 'TEXT'}) === 'abcdAATEXT'
  402. 	    but remember: (As MDN Web Doc said,) Although the keys of an ordinary Object are ordered now, this was
  403. 	    not always the case, and the order is complex. As a result, it's best not to rely on property order.
  404. 	    So, don't expect replaceText will treat replacer key-values in any specific sort. Use replaceText to
  405. 	    replace irrelevance replacer keys only.
  406. 	*/
  407. 	function replaceText(text, replacer) {
  408. 		if (Object.entries(replacer).length === 0) {return text;}
  409. 		const [models, targets] = Object.entries(replacer);
  410. 		const len = models.length;
  411. 		let text_arr = [{text: text, replacable: true}];
  412. 		for (const [model, target] of Object.entries(replacer)) {
  413. 			text_arr = replace(text_arr, model, target);
  414. 		}
  415. 		return text_arr.map((text_obj) => (text_obj.text)).join('');
  416.  
  417. 		function replace(text_arr, model, target) {
  418. 			const result_arr = [];
  419. 			for (const text_obj of text_arr) {
  420. 				if (text_obj.replacable) {
  421. 					const splited = text_obj.text.split(model);
  422. 					for (const part of splited) {
  423. 						result_arr.push({text: part, replacable: true});
  424. 						result_arr.push({text: target, replacable: false});
  425. 					}
  426. 					result_arr.pop();
  427. 				} else {
  428. 					result_arr.push(text_obj);
  429. 				}
  430. 			}
  431. 			return result_arr;
  432. 		}
  433. 	}
  434.  
  435. 	// Get a url argument from location.href
  436. 	// also recieve a function to deal the matched string
  437. 	// returns defaultValue if name not found
  438.     // Args: {name, url=location.href, defaultValue=null, dealFunc=((a)=>{return a;})} or (name) or (url, name) or (url, name, defaultValue) or (url, name, defaultValue, dealFunc)
  439. 	function getUrlArgv(details) {
  440. 		const [name, url, defaultValue, dealFunc] = parseArgs([...arguments], [
  441. 			function(args, defaultValues) {
  442. 				const arg = args[0];
  443. 				return {
  444. 					'string': () => [arg, ...defaultValues.filter((arg, i) => i > 0)],
  445. 					'object': () => ['name', 'url', 'defaultValue', 'dealFunc'].map((prop, i) => arg.hasOwnProperty(prop) ? arg[prop] : defaultValues[i])
  446. 				}[typeof arg]();
  447. 			},
  448. 			[2,1],
  449. 			[2,1,3],
  450. 			[2,1,3,4]
  451. 		], [null, location.href, null, a => a]);
  452.  
  453.         if (name === null) { return null; }
  454.  
  455. 		const search = new URL(url).search;
  456. 		const objSearch = new URLSearchParams(search);
  457. 		const raw = objSearch.has(name) ? objSearch.get(name) : defaultValue;
  458. 		const argv = dealFunc(raw);
  459.  
  460. 		return argv;
  461. 	}
  462.  
  463. 	// Save dataURL to file
  464. 	function dl_browser(dataURL, filename) {
  465. 		const a = document.createElement('a');
  466. 		a.href = dataURL;
  467. 		a.download = filename;
  468. 		a.click();
  469. 	}
  470.  
  471. 	// File download function
  472. 	// details looks like the detail of GM_xmlhttpRequest
  473. 	// onload function will be called after file saved to disk
  474. 	function dl_GM(details) {
  475. 		if (!details.url || !details.name) {return false;};
  476.  
  477. 		// Configure request object
  478. 		const requestObj = {
  479. 			url: details.url,
  480. 			responseType: 'blob',
  481. 			onload: function(e) {
  482. 				// Save file
  483. 				dl_browser(URL.createObjectURL(e.response), details.name);
  484.  
  485. 				// onload callback
  486. 				details.onload ? details.onload(e) : function() {};
  487. 			}
  488. 		}
  489. 		if (details.onloadstart       ) {requestObj.onloadstart        = details.onloadstart;};
  490. 		if (details.onprogress        ) {requestObj.onprogress         = details.onprogress;};
  491. 		if (details.onerror           ) {requestObj.onerror            = details.onerror;};
  492. 		if (details.onabort           ) {requestObj.onabort            = details.onabort;};
  493. 		if (details.onreadystatechange) {requestObj.onreadystatechange = details.onreadystatechange;};
  494. 		if (details.ontimeout         ) {requestObj.ontimeout          = details.ontimeout;};
  495.  
  496. 		// Send request
  497. 		GM_xmlhttpRequest(requestObj);
  498. 	}
  499.  
  500. 	function AsyncManager() {
  501. 		const AM = this;
  502.  
  503. 		// Ongoing xhr count
  504. 		this.taskCount = 0;
  505.  
  506. 		// Whether generate finish events
  507. 		let finishEvent = false;
  508. 		Object.defineProperty(this, 'finishEvent', {
  509. 			configurable: true,
  510. 			enumerable: true,
  511. 			get: () => (finishEvent),
  512. 			set: (b) => {
  513. 				finishEvent = b;
  514. 				b && AM.taskCount === 0 && AM.onfinish && AM.onfinish();
  515. 			}
  516. 		});
  517.  
  518. 		// Add one task
  519. 		this.add = () => (++AM.taskCount);
  520.  
  521. 		// Finish one task
  522. 		this.finish = () => ((--AM.taskCount === 0 && AM.finishEvent && AM.onfinish && AM.onfinish(), AM.taskCount));
  523. 	}
  524.  
  525. 	function queueTask(task, queueId='default') {
  526. 		init();
  527.  
  528. 		return new Promise((resolve, reject) => {
  529. 			queueTask.hasOwnProperty(queueId) || (queueTask[queueId] = { tasks: [], ongoing: 0 });
  530. 			queueTask[queueId].tasks.push({task, resolve, reject});
  531. 			checkTask(queueId);
  532. 		});
  533.  
  534. 		function init() {
  535. 			if (!queueTask[queueId]?.initialized) {
  536. 				queueTask[queueId] = {
  537. 					// defaults
  538. 					tasks: [],
  539. 					ongoing: 0,
  540. 					max: 3,
  541. 					sleep: 500,
  542.  
  543. 					// user's pre-sets
  544. 					...(queueTask[queueId] || {}),
  545.  
  546. 					// initialized flag
  547. 					initialized: true
  548. 				}
  549. 			};
  550. 		}
  551.  
  552. 		function checkTask() {
  553. 			const queue = queueTask[queueId];
  554. 			setTimeout(() => {
  555. 				if (queue.ongoing < queue.max && queue.tasks.length) {
  556. 					const task = queue.tasks.shift();
  557. 					queue.ongoing++;
  558. 					setTimeout(
  559. 						() => task.task().then(v => {
  560. 							queue.ongoing--;
  561. 							task.resolve(v);
  562. 							checkTask(queueId);
  563. 						}).catch(e => {
  564. 							queue.ongoing--;
  565. 							task.reject(e);
  566. 							checkTask(queueId);
  567. 						}),
  568. 						queue.sleep
  569. 					);
  570. 				}
  571. 			});
  572. 		}
  573. 	}
  574.  
  575. 	const [testChecker, registerChecker, loadFuncs] = (function() {
  576. 		const checkers = {
  577. 			switch: value => value,
  578. 			url: value => location.href === value,
  579. 			path: value => location.pathname === value,
  580. 			regurl: value => !!location.href.match(value),
  581. 			regpath: value => !!location.pathname.match(value),
  582. 			starturl: value => location.href.startsWith(value),
  583. 			startpath: value => location.pathname.startsWith(value),
  584. 			func: value => value()
  585. 		};
  586.  
  587. 		// Check whether current page url matches FuncInfo.checker rule
  588. 		// This code is copy and modified from FunctionLoader.check
  589. 		function testChecker(checker) {
  590. 			if (!checker) {return true;}
  591. 			const values = Array.isArray(checker.value) ? checker.value : [checker.value];
  592. 			return values[checker.all ? 'every' : 'some'](value => {
  593. 				const type = checker.type;
  594. 				if (checkers.hasOwnProperty(type)) {
  595. 					try {
  596. 						return checkers[type](value);
  597. 					} catch (err) {
  598. 						DoLog(LogLevel.Error, 'Checker function raised an error');
  599. 						DoLog(LogLevel.Error, err);
  600. 						return false;
  601. 					}
  602. 				} else {
  603. 					DoLog(LogLevel.Error, 'Invalid checker type');
  604. 					return false;
  605. 				}
  606. 			});
  607. 		}
  608.  
  609. 		function registerChecker(name, func) {
  610. 			Assert(['Symbol', 'string', 'number'].includes(typeof name), 'name should be symbol, string or number');
  611. 			Assert(typeof func === 'function', 'func should be a function');
  612. 			checkers[name] = func;
  613. 		}
  614.  
  615. 		// Load all function-objs provided in funcs asynchronously, get their return values in one obj
  616. 		// funcobj: {[id], [readonly], [checker], [detectDom], func}
  617.         // Provide id for oFunc if you want to get its return value or want it to be a dependency for other oFuncs
  618. 		function loadFuncs(oFuncs) {
  619.             // Load
  620.             const loading_promises = new Map();
  621. 			const returnObj = {};
  622. 			oFuncs.forEach(oFunc => load(oFunc));
  623. 			return returnObj;
  624.  
  625.             // Call do_load and store returned promise
  626.             function load(oFunc, stack) {
  627.                 const promise = do_load(oFunc, stack)
  628.                 loading_promises.set(oFunc, promise);
  629.                 return promise;
  630.             }
  631.  
  632.             // Check availability and then execute
  633.             async function do_load(oFunc, stack = []) {
  634.                 const getFunc = id => oFuncs.find(oFunc => oFunc.id == id);
  635.  
  636.                 // Prevent repeat loading
  637.                 if (oFunc.hasOwnProperty('id') && returnObj.hasOwnProperty(oFunc.id)) {
  638.                     // Already loaded
  639.                     return;
  640.                 }
  641.                 if (loading_promises.has(oFunc)) {
  642.                     // Still loading
  643.                     return await loading_promises.get(oFunc);
  644.                 }
  645.                 if (oFunc.hasOwnProperty('id') && stack.includes(oFunc.id)) {
  646.                     // Circular depending
  647.                     Err(`loadFuncs.load: loop dependencies: [${stack.join(' > ')}]`);
  648.                 }
  649.  
  650.                 // Test checker
  651.                 const checker = oFunc.checker;
  652.                 if (checker && !testChecker(checker)) { return; }
  653.  
  654.                 // Load dependencies
  655.                 let dps = oFunc.dependencies || [];
  656.                 if (!Array.isArray(dps)) { dps = [dps]; }
  657.                 await Promise.all(dps.map(
  658.                     dp => load(
  659.                         getFunc(dp),
  660.                         oFunc.hasOwnProperty('id') ? stack.concat(oFunc.id) : [...stack]
  661.                     )
  662.                 ));
  663.  
  664.                 // Execute function
  665.                 if (oFunc.detectDom) {
  666.                     const selectors = Array.isArray(oFunc.detectDom) ? oFunc.detectDom : [oFunc.detectDom];
  667.                     await Promise.all(selectors.map(selector => detectDom(selector))).then(async node => await execute(oFunc));
  668.                 } else {
  669.                     await execute(oFunc);
  670.                 }
  671.             }
  672.  
  673.             // Execute directly
  674. 			function execute(oFunc) {
  675.                 return new Promise((resolve, reject) => {
  676.                     setTimeout(async e => {
  677.                         const rval = isAsyncFunction(oFunc.func) ? await oFunc.func(returnObj) : oFunc.func(returnObj);
  678.                         typeof rval === 'object' && oFunc.id &&
  679.                             (returnObj[oFunc.id] = returnObj.readonly ? MakeReadonlyObj(rval) : rval);
  680.                         resolve();
  681.                     }, 0);
  682.                 });
  683.  
  684.                 function MakeReadonlyObj(val) {
  685.                     return isObject(val) ? new Proxy(val, {
  686.                         get: function(target, property, receiver) {
  687.                             return MakeReadonlyObj(target[property]);
  688.                         },
  689.                         set: function(target, property, value, receiver) {},
  690.                         has: function(target, prop) {}
  691.                     }) : val;
  692.  
  693.                     function isObject(value) {
  694.                         return ['object', 'function'].includes(typeof value) && value !== null;
  695.                     }
  696.                 }
  697.  
  698.                 function isAsyncFunction(fn) {
  699.                     return fn.constructor.toString()=='function AsyncFunction() { [native code] }';
  700.                 }
  701. 			}
  702. 		}
  703.  
  704. 		return [testChecker, registerChecker, loadFuncs];
  705. 	}) ();
  706.  
  707. 	return [
  708. 		// Console & Debug
  709. 		LogLevel, DoLog, Err, Assert,
  710.  
  711. 		// DOM
  712. 		$, $All, $CrE, $AEL, $$CrE, addStyle, detectDom, destroyEvent,
  713.  
  714. 		// Data
  715. 		copyProp, copyProps, parseArgs, escJsStr, replaceText,
  716.  
  717. 		// Environment & Browser
  718. 		getUrlArgv, dl_browser, dl_GM,
  719.  
  720. 		// Logic & Task
  721. 		AsyncManager, queueTask, testChecker, registerChecker, loadFuncs
  722. 	];
  723. })();

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