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pakku.user.js

GreaseMonkey version of pakku.js.

  1. // ==UserScript==
  2. // @name        pakku.user.js
  3. // @description GreaseMonkey version of pakku.js.
  4. // @include     *://*.bilibili.com/*
  5. // @version     1.1
  6. // @grant       none
  7. // @namespace me.fts.pakkujs
  8. // ==/UserScript==
  9.  
  10. (function(){
  11.  
  12. // Configuration
  13. // I am too lazy to add configuration UI :)
  14.  
  15. THRESHOLD=20;
  16. TRIM_ENDING=true;
  17. TAOLUS=[[/^23{2,}$/,"233..."],[/^6{3,}$/,"666..."],[/^[fF]+$/,"FFF..."],[/^[hH]+$/,"hhh..."]];
  18. REMOVE_SEEK=true;
  19. PROC_TYPE7=true;
  20. MAX_COSINE=80;
  21. MAX_DIST=3;
  22. TRIM_ENDING=true;
  23. TRIM_SPACE=true;
  24. WHITELIST=[];
  25. DANMU_MARK='suffix';
  26. ENLARGE=true;
  27.  
  28. //Unused in script:
  29. /*
  30. DANMU_BADGE
  31. FLASH_NOTIF
  32. POPUP_BADGE
  33. //*/
  34.  
  35. function fromholyjson(txt) {
  36. 	var item=JSON.parse(txt);
  37. 	for(var i in item)
  38. 		item[i][0]=RegExp(item[i][0]);
  39. 	return item;
  40. }
  41. function toholyjson(obj) {
  42. 	var item=[];
  43. 	for(var i in obj)
  44. 		item.push([obj[i][0].source,obj[i][1]]);
  45. 	return JSON.stringify(item);
  46. }
  47.  
  48.  
  49.  
  50.  
  51. // Copied from edit_distance.js
  52.  
  53. var ed_counts = new Int16Array (0x10ffff);
  54. var ed_a = new Int16Array (1048576);
  55. var ed_b = new Int16Array (1048576);
  56. var ed_t = new Int32Array (2048);
  57.  
  58. var MIN_DANMU_SIZE=10;
  59.  
  60. function hash(a, b) {
  61. 	return ((a<<10)^b)&1048575;
  62. }
  63.  
  64. function edit_distance (P, Q) {
  65. 	'use strict';
  66. 	// TODO: Make this less hacky
  67.  
  68. 	if (P.length + Q.length < MIN_DANMU_SIZE)
  69. 		return (MAX_DIST + 1) * +(P != Q);
  70.  
  71. 	for (var i = 0; i < P.length; i ++) ed_counts [P.charCodeAt (i)] ++;
  72. 	for (var i = 0; i < Q.length; i ++) ed_counts [Q.charCodeAt (i)] --;
  73.  
  74. 	var ans = 0;
  75.  
  76. 	for (var i = 0; i < P.length; i ++) {
  77. 		ans += Math.abs (ed_counts[P.charCodeAt (i)]);
  78. 		ed_counts[P.charCodeAt (i)] = 0;
  79. 	}
  80.  
  81. 	for (var i = 0; i < Q.length; i ++) {
  82. 		ans += Math.abs (ed_counts[Q.charCodeAt (i)]);
  83. 		ed_counts[Q.charCodeAt (i)] = 0;
  84. 	}
  85.  
  86. 	return ans;
  87. }
  88.  
  89. function cosine_distance (P, Q) {
  90.  
  91. 	'use strict';
  92.  
  93. 	var ed_t_p = 0;
  94.  
  95. 	ed_a[hash(P.charCodeAt(P.length - 1), P.charCodeAt(0))] = 1;
  96. 	ed_b[hash(Q.charCodeAt(Q.length - 1), Q.charCodeAt(0))] = 1;
  97.  
  98. 	ed_t[ed_t_p++] = hash(P.charCodeAt(P.length - 1), P.charCodeAt(0));
  99. 	ed_t[ed_t_p++] = hash(Q.charCodeAt(Q.length - 1), Q.charCodeAt(0));
  100. 	for (var i = 0; i < P.length - 1; i++) {
  101. 		var h1 = hash(P.charCodeAt(i), P.charCodeAt(i + 1));
  102. 		ed_t[ed_t_p++] = h1;
  103. 		ed_a[h1] += 1;
  104. 	}
  105. 	for (var i = 0; i < Q.length - 1; i++) {
  106. 		var h1 = hash(Q.charCodeAt(i), Q.charCodeAt(i + 1));
  107. 		ed_t[ed_t_p++] = h1;
  108. 		ed_b[h1] += 1;
  109. 	}
  110. 	var data = Array();
  111.  
  112. 	var x = 0, y = 0, z = 0;
  113.  
  114. 	for (var i = 0; i < ed_t_p; i++) {
  115. 		var h1 = ed_t[i];
  116. 		if (ed_a[h1]) {
  117. 			y += ed_a[h1] * ed_a[h1];
  118. 			if (ed_b[h1]) {
  119.                 x += ed_a[h1] * ed_b[h1];
  120.                 z += ed_b[h1] * ed_b[h1];
  121. 				ed_b[h1] = 0;
  122. 			}
  123. 			ed_a[h1] = 0;
  124. 		}
  125. 		else {
  126. 			if (ed_b[h1]) {
  127.                 z += ed_b[h1] * ed_b[h1];
  128. 				ed_b[h1] = 0;
  129. 			};
  130. 			
  131. 		}
  132. 	}
  133. 	//console.log(x,y,z);
  134. 	return x * x / y / z;
  135. }
  136.  
  137. function similar(P,Q) {
  138. 	return edit_distance(P,Q)<=MAX_DIST || cosine_distance(P,Q)*100>=MAX_COSINE;
  139. }
  140.  
  141. // Copied from core.js
  142.  
  143. var trim_ending_re=/^(.+?)[\.。,，/\?？!！~～@\^、+=\-_♂♀ ]*$/;
  144. var trim_space_re=/[ 　]/g;
  145. var LOG_VERBOSE=true;
  146.  
  147. function parse(old_dom,tabid) {
  148. 	TAOLUS_len=TAOLUS.length;
  149. 	WHITELIST_len=WHITELIST.length;
  150. 	
  151. 	  //chrome.browserAction.setTitle({
  152. 	  //		title: '正在处理弹幕…', // if u can see this, pakku might not be working correctly :)
  153. 		//	  tabId: tabid
  154. 		//});
  155. 	
  156. 	console.time('parse');
  157. 	
  158. 	function enlarge(size,count) {
  159. 		return count<=10 ? size : Math.floor(size*Math.log10(count));
  160. 	}
  161.  
  162. 	
  163. 	function make_mark(txt,cnt) {
  164. 		return DANMU_MARK=='suffix' ? txt+' [x'+cnt+']' :
  165. 			   DANMU_MARK=='prefix' ? '[x'+cnt+'] '+txt : txt;
  166. 	}
  167. 	
  168. 	function detaolu(text) {
  169. 		for(var i=0;i<TAOLUS_len;i++)
  170. 			if(TAOLUS[i][0].test(text))
  171. 				return TAOLUS[i][1];
  172. 		text = TRIM_ENDING ? text.replace(trim_ending_re,'$1') : text;
  173. 		text = TRIM_SPACE ? text.replace(trim_space_re,'') : text;
  174. 		return text;
  175. 	}
  176. 	
  177. 	function whitelisted(text) {
  178. 		for(var i=0;i<WHITELIST_len;i++)
  179. 			if(WHITELIST[i][0].test(text))
  180. 				return true;
  181. 		return false;
  182. 	}
  183. 	
  184. 	function ext_special_danmu(text) {
  185. 		try {
  186. 			return JSON.parse(text)[4];
  187. 		} catch(e) {
  188. 			return text;
  189. 		}
  190. 	}
  191. 	
  192. 	function build_text(elem) {
  193. 		var count=elem.count;
  194. 		var dumped=null;
  195. 		if(elem.mode=='7') // special danmu, need more parsing
  196. 			try {
  197. 				dumped=JSON.parse(elem.orig_str);
  198. 			} catch(e) {}
  199. 		
  200. 		if(dumped) {
  201. 			dumped[4]=count==1?dumped[4]:make_mark(elem.str,count);
  202. 			return JSON.stringify(dumped);
  203. 		} else // normal case
  204. 			return count==1?elem.orig_str:make_mark(elem.str,count);
  205. 	}
  206.  
  207. 	var parser=new DOMParser();
  208. 	var dom=parser.parseFromString(old_dom,'text/xml');
  209. 	var new_dom=parser.parseFromString('<i></i>','text/xml');
  210. 	var i_elem=new_dom.childNodes[0];
  211.  
  212. 	var danmus=[];
  213. 	[].slice.call(dom.childNodes[0].children).forEach(function(elem) {
  214. 		if(elem.tagName=='d') { // danmu
  215. 			var attr=elem.attributes['p'].value.split(',');
  216. 			var str=elem.childNodes[0] ? elem.childNodes[0].data : '';
  217.  
  218. 			if(!PROC_TYPE7 && attr[1]=='7') // special danmu
  219. 				i_elem.appendChild(elem);
  220. 			else if(attr[1]=='8') { // code danmu
  221. 				if(REMOVE_SEEK && str.indexOf('Player.seek(')!=-1)
  222. 					elem.childNodes[0].data='/* player.seek filtered by pakku */';
  223. 				i_elem.appendChild(elem);
  224. 			} else if(whitelisted(str)) {
  225. 				i_elem.appendChild(elem);
  226. 			} else
  227. 				danmus.push({
  228. 					attr: attr, // thus we can build it into new_dom again
  229. 					str: attr[1]=='7' ? detaolu(ext_special_danmu(str)) : detaolu(str),
  230. 					time: parseFloat(attr[0]),
  231. 					orig_str: str,
  232. 					mode: attr[1],
  233. 					count: 1,
  234. 				});
  235. 		} else
  236. 			i_elem.appendChild(elem);
  237. 	});
  238. 	danmus.sort(function(x,y) {return x.time-y.time;});
  239.  
  240. 	var danmu_chunk=Array();
  241. 	var last_time=0;
  242. 	var counter=0;
  243.  
  244. 	function apply_item(dm) {
  245. 		counter+=dm.count-1;
  246. 		var d=new_dom.createElement('d');
  247. 		var tn=new_dom.createTextNode(build_text(dm));
  248.  
  249. 		d.appendChild(tn);
  250. 		if(ENLARGE)
  251. 			dm.attr[2]=''+enlarge(parseInt(dm.attr[2]),dm.count);
  252. 		d.setAttribute('p',dm.attr.join(','));
  253. 		i_elem.appendChild(d);
  254. 	}
  255. 	
  256. 	danmus.forEach(function(dm) {
  257. 		while(danmu_chunk.length && dm.time-danmu_chunk[0].time>THRESHOLD)
  258. 			apply_item(danmu_chunk.shift());
  259. 		
  260. 		for(var i=0;i<danmu_chunk.length;i++) {
  261. 			if(similar(dm.str,danmu_chunk[i].str)) {
  262. 				if(LOG_VERBOSE) {
  263. 					if(edit_distance(dm.str,danmu_chunk[i].str)>MAX_DIST)
  264. 						console.log('cosine_dis',dm.str,'to',danmu_chunk[i].str);
  265. 					else
  266. 						console.log('edit_dis',dm.str,'to',danmu_chunk[i].str);
  267. 				}
  268. 				danmu_chunk[i].count++;
  269. 				return; // aka continue
  270. 			}
  271. 		}
  272. 		danmu_chunk.push(dm);
  273. 	});
  274. 	for(var i=0;i<danmu_chunk.length;i++)
  275. 		apply_item(danmu_chunk[i]);
  276.  
  277. 	//setbadge((
  278. 	//        POPUP_BADGE=='count' ? ''+counter :
  279. 	//        POPUP_BADGE=='percent' ? (danmus.length ? (counter*100/danmus.length).toFixed(0)+'%' : '0%') :
  280. 	//        ''
  281. 	//    ),SUCCESS_COLOR,tabid
  282. 	//);
  283. 	//chrome.browserAction.setTitle({
  284. 	//    title: '已过滤 '+counter+'/'+danmus.length+' 弹幕',
  285. 	//    tabId: tabid
  286. 	//});
  287. 	var serializer=new XMLSerializer();
  288. 	console.timeEnd('parse');
  289. 	return [serializer.serializeToString(new_dom), new_dom];
  290. }
  291.  
  292. // Hijacking XMLHttpRequest to make this script work
  293.  
  294. WINDOW = window;
  295. if(WINDOW._fts_xhr)return;
  296. WINDOW._fts_xhr = WINDOW.XMLHttpRequest;
  297. WINDOW.XMLHttpRequest = function() {
  298. 	//cannot use apply directly since we want a 'new' version
  299. 	var wrapped = new(Function.prototype.bind.apply(WINDOW._fts_xhr, arguments));
  300.  
  301. 	wrapped.addEventListener("readystatechange", function () {
  302. 		var r;
  303. 		try{
  304. 			if(wrapped.readyState == 4) {
  305. 				//console.log(wrapped);
  306. 				if( wrapped.responseURL.match(/^(https:|http:|)?(\/\/)?comment.bilibili.com\/.*\.xml/)) {
  307. 					console.log("processing danmoku", wrapped);
  308. 						r = parse(wrapped.response, 0);
  309. 						Object.defineProperty(wrapped, 'responseText', {
  310. 							writable: true
  311. 						});
  312. 						Object.defineProperty(wrapped, 'responseXML', {
  313. 							writable: true
  314. 						});
  315. 						Object.defineProperty(wrapped, 'response', {
  316. 							writable: true
  317. 						});
  318. 						wrapped.responseXML = r[1];
  319. 						wrapped.responseText = r[0];
  320. 						wrapped.response = r[0];
  321. 				}
  322. 			}
  323. 		} catch(e) {
  324. 			console.log(e, r);
  325. 		}
  326. 	});
  327. 	//*/
  328.  
  329. 	return wrapped;
  330. };
  331. console.log("r1 loaded");
  332.  
  333.  
  334. })();