mirror of https://github.com/gorhill/uBlock.git
Support CSS selectors mixed w/ operators in procedural cosmetic filters
Related issue: - https://github.com/gorhill/uBlock/issues/3683 This commit further increases uBO's procedural cosmetic filters Adguard's cosmetic filter syntax -- specifically those procedural cosmetic filters where plain CSS selectors appeared following a procedural oeprator (this was rejected as invalid by uBO). Also, experimental support for `:watch-attrs` procedural operator, as discussed in <https://github.com/uBlockOrigin/uBlock-issues/issues/341#issuecomment-449765525>. Support may be dropped before next release depending on whether a better solution is suggested. Additionally, the usual opportunistic refactoring toward ES6 syntax.
This commit is contained in:
Raymond Hill
parent
e4cec5a15e
commit
8a88e9d931
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@ -1,7 +1,7 @@
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/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2014-2018 Raymond Hill
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Copyright (C) 2014-present Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -105,7 +105,8 @@
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// https://github.com/chrisaljoudi/uBlock/issues/456
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// https://github.com/gorhill/uBlock/issues/2029
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if ( typeof vAPI === 'object' && !vAPI.contentScript ) { // >>>>>>>> start of HUGE-IF-BLOCK
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// >>>>>>>> start of HUGE-IF-BLOCK
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if ( typeof vAPI === 'object' && !vAPI.contentScript ) {
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/******************************************************************************/
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/******************************************************************************/
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@ -178,28 +179,28 @@ vAPI.SafeAnimationFrame.prototype = {
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vAPI.domWatcher = (function() {
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var addedNodeLists = [],
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addedNodes = [],
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domIsReady = false,
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const addedNodeLists = [];
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const removedNodeLists = [];
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const addedNodes = [];
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const ignoreTags = new Set([ 'br', 'head', 'link', 'meta', 'script', 'style' ]);
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const listeners = [];
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let domIsReady = false,
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domLayoutObserver,
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ignoreTags = new Set([ 'br', 'head', 'link', 'meta', 'script', 'style' ]),
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listeners = [],
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listenerIterator = [], listenerIteratorDirty = false,
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removedNodeLists = [],
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removedNodes = false,
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safeObserverHandlerTimer;
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var safeObserverHandler = function() {
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const safeObserverHandler = function() {
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//console.time('dom watcher/safe observer handler');
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safeObserverHandlerTimer.clear();
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var i = addedNodeLists.length,
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j = addedNodes.length,
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nodeList, iNode, node;
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let i = addedNodeLists.length,
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j = addedNodes.length;
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while ( i-- ) {
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nodeList = addedNodeLists[i];
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iNode = nodeList.length;
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const nodeList = addedNodeLists[i];
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let iNode = nodeList.length;
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while ( iNode-- ) {
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node = nodeList[iNode];
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const node = nodeList[iNode];
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if ( node.nodeType !== 1 ) { continue; }
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if ( ignoreTags.has(node.localName) ) { continue; }
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if ( node.parentElement === null ) { continue; }
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@ -209,8 +210,8 @@ vAPI.domWatcher = (function() {
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addedNodeLists.length = 0;
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i = removedNodeLists.length;
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while ( i-- && removedNodes === false ) {
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nodeList = removedNodeLists[i];
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iNode = nodeList.length;
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const nodeList = removedNodeLists[i];
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let iNode = nodeList.length;
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while ( iNode-- ) {
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if ( nodeList[iNode].nodeType !== 1 ) { continue; }
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removedNodes = true;
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@ -220,7 +221,7 @@ vAPI.domWatcher = (function() {
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removedNodeLists.length = 0;
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//console.timeEnd('dom watcher/safe observer handler');
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if ( addedNodes.length === 0 && removedNodes === false ) { return; }
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for ( var listener of getListenerIterator() ) {
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for ( const listener of getListenerIterator() ) {
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listener.onDOMChanged(addedNodes, removedNodes);
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}
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addedNodes.length = 0;
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@ -229,17 +230,15 @@ vAPI.domWatcher = (function() {
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// https://github.com/chrisaljoudi/uBlock/issues/205
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// Do not handle added node directly from within mutation observer.
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var observerHandler = function(mutations) {
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const observerHandler = function(mutations) {
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//console.time('dom watcher/observer handler');
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var nodeList, mutation,
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i = mutations.length;
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let i = mutations.length;
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while ( i-- ) {
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mutation = mutations[i];
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nodeList = mutation.addedNodes;
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const mutation = mutations[i];
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let nodeList = mutation.addedNodes;
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if ( nodeList.length !== 0 ) {
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addedNodeLists.push(nodeList);
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}
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if ( removedNodes ) { continue; }
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nodeList = mutation.removedNodes;
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if ( nodeList.length !== 0 ) {
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removedNodeLists.push(nodeList);
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@ -253,7 +252,7 @@ vAPI.domWatcher = (function() {
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//console.timeEnd('dom watcher/observer handler');
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};
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var startMutationObserver = function() {
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const startMutationObserver = function() {
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if ( domLayoutObserver !== undefined || !domIsReady ) { return; }
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domLayoutObserver = new MutationObserver(observerHandler);
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domLayoutObserver.observe(document.documentElement, {
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@ -266,13 +265,13 @@ vAPI.domWatcher = (function() {
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vAPI.shutdown.add(cleanup);
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};
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var stopMutationObserver = function() {
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const stopMutationObserver = function() {
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if ( domLayoutObserver === undefined ) { return; }
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cleanup();
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vAPI.shutdown.remove(cleanup);
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};
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var getListenerIterator = function() {
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const getListenerIterator = function() {
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if ( listenerIteratorDirty ) {
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listenerIterator = listeners.slice();
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listenerIteratorDirty = false;
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@ -280,7 +279,7 @@ vAPI.domWatcher = (function() {
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return listenerIterator;
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};
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var addListener = function(listener) {
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const addListener = function(listener) {
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if ( listeners.indexOf(listener) !== -1 ) { return; }
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listeners.push(listener);
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listenerIteratorDirty = true;
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@ -289,8 +288,8 @@ vAPI.domWatcher = (function() {
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startMutationObserver();
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};
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var removeListener = function(listener) {
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var pos = listeners.indexOf(listener);
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const removeListener = function(listener) {
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const pos = listeners.indexOf(listener);
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if ( pos === -1 ) { return; }
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listeners.splice(pos, 1);
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listenerIteratorDirty = true;
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@ -299,7 +298,7 @@ vAPI.domWatcher = (function() {
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}
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};
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var cleanup = function() {
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const cleanup = function() {
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if ( domLayoutObserver !== undefined ) {
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domLayoutObserver.disconnect();
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domLayoutObserver = null;
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@ -310,19 +309,15 @@ vAPI.domWatcher = (function() {
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}
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};
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var start = function() {
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const start = function() {
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domIsReady = true;
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for ( var listener of getListenerIterator() ) {
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for ( const listener of getListenerIterator() ) {
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listener.onDOMCreated();
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}
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startMutationObserver();
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};
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return {
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start: start,
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addListener: addListener,
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removeListener: removeListener
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};
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return { start, addListener, removeListener };
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})();
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/******************************************************************************/
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@ -330,7 +325,7 @@ vAPI.domWatcher = (function() {
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/******************************************************************************/
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vAPI.matchesProp = (function() {
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var docElem = document.documentElement;
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const docElem = document.documentElement;
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if ( typeof docElem.matches !== 'function' ) {
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if ( typeof docElem.mozMatchesSelector === 'function' ) {
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return 'mozMatchesSelector';
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@ -454,6 +449,63 @@ vAPI.DOMFilterer = (function() {
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PSelectorMatchesCSSBeforeTask.prototype = Object.create(PSelectorMatchesCSSTask.prototype);
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PSelectorMatchesCSSBeforeTask.prototype.constructor = PSelectorMatchesCSSBeforeTask;
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const PSelectorSpathTask = function(task) {
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this.spath = task[1];
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};
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PSelectorSpathTask.prototype.exec = function(input) {
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const output = [];
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for ( let node of input ) {
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const parent = node.parentElement;
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if ( parent === null ) { continue; }
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let pos = 1;
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for (;;) {
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node = node.previousElementSibling;
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if ( node === null ) { break; }
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pos += 1;
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}
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const nodes = parent.querySelectorAll(
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':scope > :nth-child(' + pos + ')' + this.spath
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);
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for ( const node of nodes ) {
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output.push(node);
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}
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}
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return output;
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};
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const PSelectorWatchAttrs = function(task) {
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this.observer = null;
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this.observed = new WeakSet();
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this.observerOptions = {
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attributes: true,
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subtree: true,
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};
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const attrs = task[1];
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if ( Array.isArray(attrs) && attrs.length !== 0 ) {
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this.observerOptions.attributeFilter = task[1];
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}
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};
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// TODO: Is it worth trying to re-apply only the current selector?
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PSelectorWatchAttrs.prototype.handler = function() {
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const filterer =
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vAPI.domFilterer && vAPI.domFilterer.proceduralFilterer;
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if ( filterer instanceof Object ) {
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filterer.onDOMChanged([ null ]);
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}
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};
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PSelectorWatchAttrs.prototype.exec = function(input) {
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if ( input.length === 0 ) { return input; }
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if ( this.observer === null ) {
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this.observer = new MutationObserver(this.handler);
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}
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for ( const node of input ) {
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if ( this.observed.has(node) ) { continue; }
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this.observer.observe(node, this.observerOptions);
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this.observed.add(node);
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}
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return input;
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};
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const PSelectorXpathTask = function(task) {
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this.xpe = document.createExpression(task[1], null);
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this.xpr = null;
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@ -488,7 +540,9 @@ vAPI.DOMFilterer = (function() {
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[ ':matches-css-after', PSelectorMatchesCSSAfterTask ],
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[ ':matches-css-before', PSelectorMatchesCSSBeforeTask ],
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[ ':not', PSelectorIfNotTask ],
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[ ':xpath', PSelectorXpathTask ]
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[ ':spath', PSelectorSpathTask ],
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[ ':watch-attrs', PSelectorWatchAttrs ],
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[ ':xpath', PSelectorXpathTask ],
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]);
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}
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this.budget = 200; // I arbitrary picked a 1/5 second
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@ -618,10 +672,9 @@ vAPI.DOMFilterer = (function() {
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pselector.budget = -0x7FFFFFFF;
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}
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t0 = t1;
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let i = nodes.length;
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while ( i-- ) {
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this.domFilterer.hideNode(nodes[i]);
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this.hiddenNodes.add(nodes[i]);
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for ( const node of nodes ) {
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this.domFilterer.hideNode(node);
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this.hiddenNodes.add(node);
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}
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}
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@ -720,33 +773,34 @@ vAPI.domFilterer = new vAPI.DOMFilterer();
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/******************************************************************************/
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vAPI.domCollapser = (function() {
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var resquestIdGenerator = 1,
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processTimer,
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toProcess = [],
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toFilter = [],
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toCollapse = new Map(),
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cachedBlockedSet,
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cachedBlockedSetHash,
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cachedBlockedSetTimer;
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var src1stProps = {
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'embed': 'src',
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'iframe': 'src',
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'img': 'src',
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'object': 'data'
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const messaging = vAPI.messaging;
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const toProcess = [];
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const toFilter = [];
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const toCollapse = new Map();
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const src1stProps = {
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embed: 'src',
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iframe: 'src',
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img: 'src',
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object: 'data'
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};
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var src2ndProps = {
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'img': 'srcset'
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const src2ndProps = {
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img: 'srcset'
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};
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var tagToTypeMap = {
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const tagToTypeMap = {
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embed: 'object',
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iframe: 'sub_frame',
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img: 'image',
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object: 'object'
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};
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var netSelectorCacheCount = 0,
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messaging = vAPI.messaging;
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var cachedBlockedSetClear = function() {
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let resquestIdGenerator = 1,
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processTimer,
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cachedBlockedSet,
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cachedBlockedSetHash,
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cachedBlockedSetTimer,
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netSelectorCacheCount = 0;
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const cachedBlockedSetClear = function() {
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cachedBlockedSet =
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cachedBlockedSetHash =
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cachedBlockedSetTimer = undefined;
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@ -754,13 +808,13 @@ vAPI.domCollapser = (function() {
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// https://github.com/chrisaljoudi/uBlock/issues/174
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// Do not remove fragment from src URL
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var onProcessed = function(response) {
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const onProcessed = function(response) {
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if ( !response ) { // This happens if uBO is disabled or restarted.
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toCollapse.clear();
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return;
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}
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var targets = toCollapse.get(response.id);
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const targets = toCollapse.get(response.id);
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if ( targets === undefined ) { return; }
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toCollapse.delete(response.id);
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if ( cachedBlockedSetHash !== response.hash ) {
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@ -774,16 +828,15 @@ vAPI.domCollapser = (function() {
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if ( cachedBlockedSet === undefined || cachedBlockedSet.size === 0 ) {
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return;
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}
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var selectors = [],
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iframeLoadEventPatch = vAPI.iframeLoadEventPatch,
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netSelectorCacheCountMax = response.netSelectorCacheCountMax,
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tag, prop, src, value;
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const selectors = [];
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const iframeLoadEventPatch = vAPI.iframeLoadEventPatch;
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let netSelectorCacheCountMax = response.netSelectorCacheCountMax;
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for ( var target of targets ) {
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tag = target.localName;
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prop = src1stProps[tag];
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for ( const target of targets ) {
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const tag = target.localName;
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let prop = src1stProps[tag];
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if ( prop === undefined ) { continue; }
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src = target[prop];
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let src = target[prop];
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if ( typeof src !== 'string' || src.length === 0 ) {
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prop = src2ndProps[tag];
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if ( prop === undefined ) { continue; }
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@ -799,13 +852,13 @@ vAPI.domCollapser = (function() {
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target.hidden = true;
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// https://github.com/chrisaljoudi/uBlock/issues/1048
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// Use attribute to construct CSS rule
|
||||
if (
|
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netSelectorCacheCount <= netSelectorCacheCountMax &&
|
||||
(value = target.getAttribute(prop))
|
||||
) {
|
||||
if ( netSelectorCacheCount <= netSelectorCacheCountMax ) {
|
||||
const value = target.getAttribute(prop);
|
||||
if ( value ) {
|
||||
selectors.push(tag + '[' + prop + '="' + value + '"]');
|
||||
netSelectorCacheCount += 1;
|
||||
}
|
||||
}
|
||||
if ( iframeLoadEventPatch !== undefined ) {
|
||||
iframeLoadEventPatch(target);
|
||||
}
|
||||
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|
@ -824,10 +877,10 @@ vAPI.domCollapser = (function() {
|
|||
}
|
||||
};
|
||||
|
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var send = function() {
|
||||
const send = function() {
|
||||
processTimer = undefined;
|
||||
toCollapse.set(resquestIdGenerator, toProcess);
|
||||
var msg = {
|
||||
const msg = {
|
||||
what: 'getCollapsibleBlockedRequests',
|
||||
id: resquestIdGenerator,
|
||||
frameURL: window.location.href,
|
||||
|
|
@ -835,12 +888,12 @@ vAPI.domCollapser = (function() {
|
|||
hash: cachedBlockedSetHash
|
||||
};
|
||||
messaging.send('contentscript', msg, onProcessed);
|
||||
toProcess = [];
|
||||
toFilter = [];
|
||||
toProcess.length = 0;
|
||||
toFilter.length = 0;
|
||||
resquestIdGenerator += 1;
|
||||
};
|
||||
|
||||
var process = function(delay) {
|
||||
const process = function(delay) {
|
||||
if ( toProcess.length === 0 ) { return; }
|
||||
if ( delay === 0 ) {
|
||||
if ( processTimer !== undefined ) {
|
||||
|
|
@ -852,26 +905,24 @@ vAPI.domCollapser = (function() {
|
|||
}
|
||||
};
|
||||
|
||||
var add = function(target) {
|
||||
const add = function(target) {
|
||||
toProcess[toProcess.length] = target;
|
||||
};
|
||||
|
||||
var addMany = function(targets) {
|
||||
var i = targets.length;
|
||||
while ( i-- ) {
|
||||
add(targets[i]);
|
||||
const addMany = function(targets) {
|
||||
for ( const target of targets ) {
|
||||
add(target);
|
||||
}
|
||||
};
|
||||
|
||||
var iframeSourceModified = function(mutations) {
|
||||
var i = mutations.length;
|
||||
while ( i-- ) {
|
||||
addIFrame(mutations[i].target, true);
|
||||
const iframeSourceModified = function(mutations) {
|
||||
for ( const mutation of mutations ) {
|
||||
addIFrame(mutation.target, true);
|
||||
}
|
||||
process();
|
||||
};
|
||||
var iframeSourceObserver = new MutationObserver(iframeSourceModified);
|
||||
var iframeSourceObserverOptions = {
|
||||
const iframeSourceObserver = new MutationObserver(iframeSourceModified);
|
||||
const iframeSourceObserverOptions = {
|
||||
attributes: true,
|
||||
attributeFilter: [ 'src' ]
|
||||
};
|
||||
|
|
@ -880,7 +931,7 @@ vAPI.domCollapser = (function() {
|
|||
// document, from within `bootstrapPhase1`, and which scriptlets are
|
||||
// selectively looked-up from:
|
||||
// https://github.com/uBlockOrigin/uAssets/blob/master/filters/resources.txt
|
||||
var primeLocalIFrame = function(iframe) {
|
||||
const primeLocalIFrame = function(iframe) {
|
||||
if ( vAPI.injectedScripts ) {
|
||||
vAPI.injectScriptlet(iframe.contentDocument, vAPI.injectedScripts);
|
||||
}
|
||||
|
|
@ -888,11 +939,11 @@ vAPI.domCollapser = (function() {
|
|||
|
||||
// https://github.com/gorhill/uBlock/issues/162
|
||||
// Be prepared to deal with possible change of src attribute.
|
||||
var addIFrame = function(iframe, dontObserve) {
|
||||
const addIFrame = function(iframe, dontObserve) {
|
||||
if ( dontObserve !== true ) {
|
||||
iframeSourceObserver.observe(iframe, iframeSourceObserverOptions);
|
||||
}
|
||||
var src = iframe.src;
|
||||
const src = iframe.src;
|
||||
if ( src === '' || typeof src !== 'string' ) {
|
||||
primeLocalIFrame(iframe);
|
||||
return;
|
||||
|
|
@ -905,21 +956,20 @@ vAPI.domCollapser = (function() {
|
|||
add(iframe);
|
||||
};
|
||||
|
||||
var addIFrames = function(iframes) {
|
||||
var i = iframes.length;
|
||||
while ( i-- ) {
|
||||
addIFrame(iframes[i]);
|
||||
const addIFrames = function(iframes) {
|
||||
for ( const iframe of iframes ) {
|
||||
addIFrame(iframe);
|
||||
}
|
||||
};
|
||||
|
||||
var onResourceFailed = function(ev) {
|
||||
const onResourceFailed = function(ev) {
|
||||
if ( tagToTypeMap[ev.target.localName] !== undefined ) {
|
||||
add(ev.target);
|
||||
process();
|
||||
}
|
||||
};
|
||||
|
||||
var domWatcherInterface = {
|
||||
const domWatcherInterface = {
|
||||
onDOMCreated: function() {
|
||||
if ( vAPI instanceof Object === false ) { return; }
|
||||
if ( vAPI.domCollapser instanceof Object === false ) {
|
||||
|
|
@ -935,10 +985,9 @@ vAPI.domCollapser = (function() {
|
|||
// https://github.com/chrisaljoudi/uBlock/issues/7
|
||||
// Preferring getElementsByTagName over querySelectorAll:
|
||||
// http://jsperf.com/queryselectorall-vs-getelementsbytagname/145
|
||||
var elems = document.images || document.getElementsByTagName('img'),
|
||||
i = elems.length, elem;
|
||||
while ( i-- ) {
|
||||
elem = elems[i];
|
||||
const elems = document.images ||
|
||||
document.getElementsByTagName('img');
|
||||
for ( const elem of elems ) {
|
||||
if ( elem.complete ) {
|
||||
add(elem);
|
||||
}
|
||||
|
|
@ -958,15 +1007,13 @@ vAPI.domCollapser = (function() {
|
|||
});
|
||||
},
|
||||
onDOMChanged: function(addedNodes) {
|
||||
var ni = addedNodes.length;
|
||||
if ( ni === 0 ) { return; }
|
||||
for ( var i = 0, node; i < ni; i++ ) {
|
||||
node = addedNodes[i];
|
||||
if ( addedNodes.length === 0 ) { return; }
|
||||
for ( const node of addedNodes ) {
|
||||
if ( node.localName === 'iframe' ) {
|
||||
addIFrame(node);
|
||||
}
|
||||
if ( node.childElementCount === 0 ) { continue; }
|
||||
var iframes = node.getElementsByTagName('iframe');
|
||||
const iframes = node.getElementsByTagName('iframe');
|
||||
if ( iframes.length !== 0 ) {
|
||||
addIFrames(iframes);
|
||||
}
|
||||
|
|
@ -979,13 +1026,7 @@ vAPI.domCollapser = (function() {
|
|||
vAPI.domWatcher.addListener(domWatcherInterface);
|
||||
}
|
||||
|
||||
return {
|
||||
add: add,
|
||||
addMany: addMany,
|
||||
addIFrame: addIFrame,
|
||||
addIFrames: addIFrames,
|
||||
process: process
|
||||
};
|
||||
return { add, addMany, addIFrame, addIFrames, process };
|
||||
})();
|
||||
|
||||
/******************************************************************************/
|
||||
|
|
@ -993,13 +1034,14 @@ vAPI.domCollapser = (function() {
|
|||
/******************************************************************************/
|
||||
|
||||
vAPI.domSurveyor = (function() {
|
||||
var messaging = vAPI.messaging,
|
||||
domFilterer,
|
||||
const messaging = vAPI.messaging;
|
||||
const queriedIds = new Set();
|
||||
const queriedClasses = new Set();
|
||||
const pendingIdNodes = { nodes: [], added: [] };
|
||||
const pendingClassNodes = { nodes: [], added: [] };
|
||||
|
||||
let domFilterer,
|
||||
hostname = '',
|
||||
queriedIds = new Set(),
|
||||
queriedClasses = new Set(),
|
||||
pendingIdNodes = { nodes: [], added: [] },
|
||||
pendingClassNodes = { nodes: [], added: [] },
|
||||
surveyCost = 0;
|
||||
|
||||
// This is to shutdown the surveyor if result of surveying keeps being
|
||||
|
|
@ -1007,17 +1049,17 @@ vAPI.domSurveyor = (function() {
|
|||
// picked 5 minutes before the surveyor is allowed to shutdown. I also
|
||||
// arbitrarily picked 256 misses before the surveyor is allowed to
|
||||
// shutdown.
|
||||
var canShutdownAfter = Date.now() + 300000,
|
||||
let canShutdownAfter = Date.now() + 300000,
|
||||
surveyingMissCount = 0;
|
||||
|
||||
// Handle main process' response.
|
||||
|
||||
var surveyPhase3 = function(response) {
|
||||
var result = response && response.result,
|
||||
mustCommit = false;
|
||||
const surveyPhase3 = function(response) {
|
||||
const result = response && response.result;
|
||||
let mustCommit = false;
|
||||
|
||||
if ( result ) {
|
||||
var selectors = result.simple;
|
||||
let selectors = result.simple;
|
||||
if ( Array.isArray(selectors) && selectors.length !== 0 ) {
|
||||
domFilterer.addCSSRule(
|
||||
selectors,
|
||||
|
|
@ -1068,19 +1110,14 @@ vAPI.domSurveyor = (function() {
|
|||
vAPI.domSurveyor = null;
|
||||
};
|
||||
|
||||
var surveyTimer = new vAPI.SafeAnimationFrame(function() {
|
||||
surveyPhase1();
|
||||
});
|
||||
|
||||
// The purpose of "chunkification" is to ensure the surveyor won't unduly
|
||||
// block the main event loop.
|
||||
|
||||
var hasChunk = function(pending) {
|
||||
return pending.nodes.length !== 0 ||
|
||||
pending.added.length !== 0;
|
||||
const hasChunk = function(pending) {
|
||||
return pending.nodes.length !== 0 || pending.added.length !== 0;
|
||||
};
|
||||
|
||||
var addChunk = function(pending, added) {
|
||||
const addChunk = function(pending, added) {
|
||||
if ( added.length === 0 ) { return; }
|
||||
if (
|
||||
Array.isArray(added) === false ||
|
||||
|
|
@ -1094,8 +1131,8 @@ vAPI.domSurveyor = (function() {
|
|||
}
|
||||
};
|
||||
|
||||
var nextChunk = function(pending) {
|
||||
var added = pending.added.length !== 0 ? pending.added.shift() : [],
|
||||
const nextChunk = function(pending) {
|
||||
let added = pending.added.length !== 0 ? pending.added.shift() : [],
|
||||
nodes;
|
||||
if ( pending.nodes.length === 0 ) {
|
||||
if ( added.length <= 1000 ) { return added; }
|
||||
|
|
@ -1121,39 +1158,39 @@ vAPI.domSurveyor = (function() {
|
|||
// Extract all classes/ids: these will be passed to the cosmetic
|
||||
// filtering engine, and in return we will obtain only the relevant
|
||||
// CSS selectors.
|
||||
const reWhitespace = /\s/;
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/672
|
||||
// http://www.w3.org/TR/2014/REC-html5-20141028/infrastructure.html#space-separated-tokens
|
||||
// http://jsperf.com/enumerate-classes/6
|
||||
|
||||
var surveyPhase1 = function() {
|
||||
const surveyPhase1 = function() {
|
||||
//console.time('dom surveyor/surveying');
|
||||
surveyTimer.clear();
|
||||
var t0 = window.performance.now();
|
||||
var rews = reWhitespace,
|
||||
qq, iout, nodes, i, node, v, vv, j;
|
||||
var ids = [];
|
||||
iout = 0;
|
||||
qq = queriedIds;
|
||||
nodes = nextChunk(pendingIdNodes);
|
||||
i = nodes.length;
|
||||
const t0 = window.performance.now();
|
||||
const rews = reWhitespace;
|
||||
const ids = [];
|
||||
let iout = 0;
|
||||
let qq = queriedIds;
|
||||
let nodes = nextChunk(pendingIdNodes);
|
||||
let i = nodes.length;
|
||||
while ( i-- ) {
|
||||
node = nodes[i];
|
||||
v = node.id;
|
||||
const node = nodes[i];
|
||||
let v = node.id;
|
||||
if ( typeof v !== 'string' ) { continue; }
|
||||
v = v.trim();
|
||||
if ( qq.has(v) === false && v.length !== 0 ) {
|
||||
ids[iout++] = v; qq.add(v);
|
||||
}
|
||||
}
|
||||
var classes = [];
|
||||
const classes = [];
|
||||
iout = 0;
|
||||
qq = queriedClasses;
|
||||
nodes = nextChunk(pendingClassNodes);
|
||||
i = nodes.length;
|
||||
while ( i-- ) {
|
||||
node = nodes[i];
|
||||
vv = node.className;
|
||||
const node = nodes[i];
|
||||
let vv = node.className;
|
||||
if ( typeof vv !== 'string' ) { continue; }
|
||||
if ( rews.test(vv) === false ) {
|
||||
if ( qq.has(vv) === false && vv.length !== 0 ) {
|
||||
|
|
@ -1161,9 +1198,9 @@ vAPI.domSurveyor = (function() {
|
|||
}
|
||||
} else {
|
||||
vv = node.classList;
|
||||
j = vv.length;
|
||||
let j = vv.length;
|
||||
while ( j-- ) {
|
||||
v = vv[j];
|
||||
let v = vv[j];
|
||||
if ( qq.has(v) === false ) {
|
||||
classes[iout++] = v; qq.add(v);
|
||||
}
|
||||
|
|
@ -1190,9 +1227,10 @@ vAPI.domSurveyor = (function() {
|
|||
}
|
||||
//console.timeEnd('dom surveyor/surveying');
|
||||
};
|
||||
var reWhitespace = /\s/;
|
||||
|
||||
var domWatcherInterface = {
|
||||
const surveyTimer = new vAPI.SafeAnimationFrame(surveyPhase1);
|
||||
|
||||
const domWatcherInterface = {
|
||||
onDOMCreated: function() {
|
||||
if (
|
||||
vAPI instanceof Object === false ||
|
||||
|
|
@ -1217,17 +1255,18 @@ vAPI.domSurveyor = (function() {
|
|||
onDOMChanged: function(addedNodes) {
|
||||
if ( addedNodes.length === 0 ) { return; }
|
||||
//console.time('dom surveyor/dom layout changed');
|
||||
var idNodes = [], iid = 0,
|
||||
classNodes = [], iclass = 0;
|
||||
var i = addedNodes.length,
|
||||
node, nodeList, j;
|
||||
const idNodes = [];
|
||||
let iid = 0;
|
||||
const classNodes = [];
|
||||
let iclass = 0;
|
||||
let i = addedNodes.length;
|
||||
while ( i-- ) {
|
||||
node = addedNodes[i];
|
||||
const node = addedNodes[i];
|
||||
idNodes[iid++] = node;
|
||||
classNodes[iclass++] = node;
|
||||
if ( node.childElementCount === 0 ) { continue; }
|
||||
nodeList = node.querySelectorAll('[id]');
|
||||
j = nodeList.length;
|
||||
let nodeList = node.querySelectorAll('[id]');
|
||||
let j = nodeList.length;
|
||||
while ( j-- ) {
|
||||
idNodes[iid++] = nodeList[j];
|
||||
}
|
||||
|
|
@ -1246,15 +1285,13 @@ vAPI.domSurveyor = (function() {
|
|||
}
|
||||
};
|
||||
|
||||
var start = function(details) {
|
||||
const start = function(details) {
|
||||
if ( vAPI.domWatcher instanceof Object === false ) { return; }
|
||||
hostname = details.hostname;
|
||||
vAPI.domWatcher.addListener(domWatcherInterface);
|
||||
};
|
||||
|
||||
return {
|
||||
start: start
|
||||
};
|
||||
return { start };
|
||||
})();
|
||||
|
||||
/******************************************************************************/
|
||||
|
|
@ -1266,18 +1303,11 @@ vAPI.domSurveyor = (function() {
|
|||
|
||||
(function bootstrap() {
|
||||
|
||||
var bootstrapPhase2 = function(ev) {
|
||||
const bootstrapPhase2 = function() {
|
||||
// This can happen on Firefox. For instance:
|
||||
// https://github.com/gorhill/uBlock/issues/1893
|
||||
if ( window.location === null ) { return; }
|
||||
|
||||
if ( ev ) {
|
||||
document.removeEventListener('DOMContentLoaded', bootstrapPhase2);
|
||||
}
|
||||
|
||||
if ( vAPI instanceof Object === false ) {
|
||||
return;
|
||||
}
|
||||
if ( vAPI instanceof Object === false ) { return; }
|
||||
|
||||
vAPI.messaging.send(
|
||||
'contentscript',
|
||||
|
|
@ -1303,8 +1333,8 @@ vAPI.domSurveyor = (function() {
|
|||
// as nuisance popups.
|
||||
// Ref.: https://developer.mozilla.org/en-US/docs/Web/Events/contextmenu
|
||||
|
||||
var onMouseClick = function(ev) {
|
||||
var elem = ev.target;
|
||||
const onMouseClick = function(ev) {
|
||||
let elem = ev.target;
|
||||
while ( elem !== null && elem.localName !== 'a' ) {
|
||||
elem = elem.parentElement;
|
||||
}
|
||||
|
|
@ -1327,9 +1357,9 @@ vAPI.domSurveyor = (function() {
|
|||
});
|
||||
};
|
||||
|
||||
var bootstrapPhase1 = function(response) {
|
||||
const bootstrapPhase1 = function(response) {
|
||||
// cosmetic filtering engine aka 'cfe'
|
||||
var cfeDetails = response && response.specificCosmeticFilters;
|
||||
const cfeDetails = response && response.specificCosmeticFilters;
|
||||
if ( !cfeDetails || !cfeDetails.ready ) {
|
||||
vAPI.domWatcher = vAPI.domCollapser = vAPI.domFilterer =
|
||||
vAPI.domSurveyor = vAPI.domIsLoaded = null;
|
||||
|
|
@ -1340,7 +1370,7 @@ vAPI.domSurveyor = (function() {
|
|||
vAPI.domFilterer = null;
|
||||
vAPI.domSurveyor = null;
|
||||
} else {
|
||||
var domFilterer = vAPI.domFilterer;
|
||||
const domFilterer = vAPI.domFilterer;
|
||||
if ( response.noGenericCosmeticFiltering || cfeDetails.noDOMSurveying ) {
|
||||
vAPI.domSurveyor = null;
|
||||
}
|
||||
|
|
@ -1398,7 +1428,11 @@ vAPI.domSurveyor = (function() {
|
|||
) {
|
||||
bootstrapPhase2();
|
||||
} else {
|
||||
document.addEventListener('DOMContentLoaded', bootstrapPhase2);
|
||||
document.addEventListener(
|
||||
'DOMContentLoaded',
|
||||
bootstrapPhase2,
|
||||
{ once: true }
|
||||
);
|
||||
}
|
||||
};
|
||||
|
||||
|
|
@ -1419,4 +1453,5 @@ vAPI.domSurveyor = (function() {
|
|||
/******************************************************************************/
|
||||
/******************************************************************************/
|
||||
|
||||
} // <<<<<<<< end of HUGE-IF-BLOCK
|
||||
}
|
||||
// <<<<<<<< end of HUGE-IF-BLOCK
|
||||
|
|
|
|||
|
|
@ -61,7 +61,7 @@ let filterFromCompiledData = function(args) {
|
|||
|
||||
// One hostname => one selector
|
||||
|
||||
let FilterOneOne = function(hostname, selector) {
|
||||
const FilterOneOne = function(hostname, selector) {
|
||||
this.hostname = hostname;
|
||||
this.selector = selector;
|
||||
};
|
||||
|
|
@ -87,7 +87,7 @@ FilterOneOne.prototype = {
|
|||
|
||||
retrieve: function(target, out) {
|
||||
if ( target.endsWith(this.hostname) === false ) { return; }
|
||||
let i = target.length - this.hostname.length;
|
||||
const i = target.length - this.hostname.length;
|
||||
if ( i !== 0 && target.charCodeAt(i-1) !== 0x2E /* '.' */ ) { return; }
|
||||
out.add(this.selector);
|
||||
},
|
||||
|
|
@ -107,7 +107,7 @@ registerFilterClass(FilterOneOne);
|
|||
|
||||
// One hostname => many selectors
|
||||
|
||||
let FilterOneMany = function(hostname, selectors) {
|
||||
const FilterOneMany = function(hostname, selectors) {
|
||||
this.hostname = hostname;
|
||||
this.selectors = selectors;
|
||||
};
|
||||
|
|
@ -131,7 +131,7 @@ FilterOneMany.prototype = {
|
|||
|
||||
retrieve: function(target, out) {
|
||||
if ( target.endsWith(this.hostname) === false ) { return; }
|
||||
let i = target.length - this.hostname.length;
|
||||
const i = target.length - this.hostname.length;
|
||||
if ( i !== 0 && target.charCodeAt(i-1) !== 0x2E /* '.' */ ) { return; }
|
||||
for ( let selector of this.selectors ) {
|
||||
out.add(selector);
|
||||
|
|
@ -161,7 +161,7 @@ FilterManyAny.prototype = {
|
|||
fid: 10,
|
||||
|
||||
add: function(hostname, selector) {
|
||||
let selectors = this.entries.get(hostname);
|
||||
const selectors = this.entries.get(hostname);
|
||||
if ( selectors === undefined ) {
|
||||
this.entries.set(hostname, selector);
|
||||
} else if ( typeof selectors === 'string' ) {
|
||||
|
|
@ -172,19 +172,19 @@ FilterManyAny.prototype = {
|
|||
},
|
||||
|
||||
retrieve: function(target, out) {
|
||||
for ( let entry of this.entries ) {
|
||||
let hostname = entry[0];
|
||||
for ( const entry of this.entries ) {
|
||||
const hostname = entry[0];
|
||||
if ( target.endsWith(hostname) === false ) { continue; }
|
||||
let i = target.length - hostname.length;
|
||||
const i = target.length - hostname.length;
|
||||
if ( i !== 0 && target.charCodeAt(i-1) !== 0x2E /* '.' */ ) {
|
||||
continue;
|
||||
}
|
||||
let selectors = entry[1];
|
||||
const selectors = entry[1];
|
||||
if ( typeof selectors === 'string' ) {
|
||||
out.add(selectors);
|
||||
continue;
|
||||
}
|
||||
for ( let selector of selectors ) {
|
||||
for ( const selector of selectors ) {
|
||||
out.add(selector);
|
||||
}
|
||||
}
|
||||
|
|
@ -523,8 +523,8 @@ FilterContainer.prototype.compile = function(parsed, writer) {
|
|||
// 1000 = cosmetic filtering
|
||||
writer.select(1000);
|
||||
|
||||
let hostnames = parsed.hostnames,
|
||||
i = hostnames.length;
|
||||
const hostnames = parsed.hostnames;
|
||||
let i = hostnames.length;
|
||||
if ( i === 0 ) {
|
||||
this.compileGenericSelector(parsed, writer);
|
||||
return true;
|
||||
|
|
@ -535,7 +535,7 @@ FilterContainer.prototype.compile = function(parsed, writer) {
|
|||
// of same filter OR globally if there is no non-negated hostnames.
|
||||
let applyGlobally = true;
|
||||
while ( i-- ) {
|
||||
let hostname = hostnames[i];
|
||||
const hostname = hostnames[i];
|
||||
if ( hostname.startsWith('~') === false ) {
|
||||
applyGlobally = false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -167,6 +167,7 @@
|
|||
'matches-css-after',
|
||||
'matches-css-before',
|
||||
'not',
|
||||
'watch-attrs',
|
||||
'xpath'
|
||||
].join('|'),
|
||||
')\\('
|
||||
|
|
@ -235,6 +236,23 @@
|
|||
}
|
||||
};
|
||||
|
||||
const compileSpathExpression = function(s) {
|
||||
if ( isValidCSSSelector('*' + s) ) {
|
||||
return s;
|
||||
}
|
||||
};
|
||||
|
||||
const compileAttrList = function(s) {
|
||||
const attrs = s.split('\s*,\s*');
|
||||
const out = [];
|
||||
for ( const attr of attrs ) {
|
||||
if ( attr !== '' ) {
|
||||
out.push(attr);
|
||||
}
|
||||
}
|
||||
return out;
|
||||
};
|
||||
|
||||
const compileXpathExpression = function(s) {
|
||||
try {
|
||||
document.createExpression(s, null);
|
||||
|
|
@ -260,6 +278,8 @@
|
|||
[ ':matches-css-after', compileCSSDeclaration ],
|
||||
[ ':matches-css-before', compileCSSDeclaration ],
|
||||
[ ':not', compileNotSelector ],
|
||||
[ ':spath', compileSpathExpression ],
|
||||
[ ':watch-attrs', compileAttrList ],
|
||||
[ ':xpath', compileXpathExpression ]
|
||||
]);
|
||||
|
||||
|
|
@ -277,10 +297,11 @@
|
|||
}
|
||||
const raw = [ compiled.selector ];
|
||||
let value;
|
||||
for ( let task of tasks ) {
|
||||
for ( const task of tasks ) {
|
||||
switch ( task[0] ) {
|
||||
case ':xpath':
|
||||
raw.push(task[0], '(', task[1], ')');
|
||||
case ':has':
|
||||
case ':if':
|
||||
raw.push(':has', '(', decompile(task[1]), ')');
|
||||
break;
|
||||
case ':has-text':
|
||||
if ( Array.isArray(task[1]) ) {
|
||||
|
|
@ -306,14 +327,15 @@
|
|||
}
|
||||
raw.push(task[0], '(', task[1].name, ': ', value, ')');
|
||||
break;
|
||||
case ':has':
|
||||
case ':if':
|
||||
raw.push(':has', '(', decompile(task[1]), ')');
|
||||
break;
|
||||
case ':if-not':
|
||||
case ':not':
|
||||
case ':if-not':
|
||||
raw.push(':not', '(', decompile(task[1]), ')');
|
||||
break;
|
||||
case ':spath':
|
||||
case ':watch-attrs':
|
||||
case ':xpath':
|
||||
raw.push(task[0], '(', task[1], ')');
|
||||
break;
|
||||
}
|
||||
}
|
||||
return raw.join('');
|
||||
|
|
@ -364,13 +386,7 @@
|
|||
// then consider it to be part of the prefix. If there is
|
||||
// at least one task present, then we fail, as we do not
|
||||
// support suffix CSS selectors.
|
||||
// TODO: AdGuard does support suffix CSS selectors, so
|
||||
// supporting this would increase compatibility with
|
||||
// AdGuard filter lists.
|
||||
if ( isValidCSSSelector(raw.slice(opNameBeg, i)) ) {
|
||||
if ( opPrefixBeg !== 0 ) { return; }
|
||||
continue;
|
||||
}
|
||||
if ( isValidCSSSelector(raw.slice(opNameBeg, i)) ) { continue; }
|
||||
// Extract and remember operator details.
|
||||
let operator = raw.slice(opNameBeg, opNameEnd);
|
||||
operator = normalizedOperators.get(operator) || operator;
|
||||
|
|
@ -380,7 +396,11 @@
|
|||
if ( opPrefixBeg === 0 ) {
|
||||
prefix = raw.slice(0, opNameBeg);
|
||||
} else if ( opNameBeg !== opPrefixBeg ) {
|
||||
return;
|
||||
const spath = compileSpathExpression(
|
||||
raw.slice(opPrefixBeg, opNameBeg)
|
||||
);
|
||||
if ( spath === undefined ) { return; }
|
||||
tasks.push([ ':spath', spath ]);
|
||||
}
|
||||
tasks.push([ operator, args ]);
|
||||
opPrefixBeg = i;
|
||||
|
|
@ -392,7 +412,9 @@
|
|||
prefix = raw;
|
||||
tasks = undefined;
|
||||
} else if ( opPrefixBeg < n ) {
|
||||
return;
|
||||
const spath = compileSpathExpression(raw.slice(opPrefixBeg));
|
||||
if ( spath === undefined ) { return; }
|
||||
tasks.push([ ':spath', spath ]);
|
||||
}
|
||||
// https://github.com/NanoAdblocker/NanoCore/issues/1#issuecomment-354394894
|
||||
if ( prefix !== '' ) {
|
||||
|
|
@ -407,7 +429,7 @@
|
|||
return lastProceduralSelectorCompiled;
|
||||
}
|
||||
lastProceduralSelector = raw;
|
||||
var compiled = compile(raw);
|
||||
let compiled = compile(raw);
|
||||
if ( compiled !== undefined ) {
|
||||
compiled.raw = decompile(compiled);
|
||||
compiled = JSON.stringify(compiled);
|
||||
|
|
|
|||
Loading…
Reference in New Issue