mirror of
https://github.com/gorhill/uBlock.git
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143 lines
4.3 KiB
JavaScript
143 lines
4.3 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2015-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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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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'use strict';
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/******************************************************************************/
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(( ) => {
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// >>>>>>>> start of private namespace
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/******************************************************************************/
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if ( typeof vAPI !== 'object' ) { return; }
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if ( typeof vAPI.domFilterer !== 'object' ) { return; }
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if ( vAPI.domFilterer === null ) { return; }
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/******************************************************************************/
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const rePseudoElements = /:(?::?after|:?before|:[a-z-]+)$/;
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const hasSelector = selector => {
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try {
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return document.querySelector(selector) !== null;
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}
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catch(ex) {
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}
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return false;
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};
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const safeQuerySelector = selector => {
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const safeSelector = rePseudoElements.test(selector)
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? selector.replace(rePseudoElements, '')
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: selector;
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try {
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return document.querySelector(safeSelector);
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}
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catch(ex) {
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}
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return null;
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};
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const safeGroupSelectors = selectors => {
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const arr = Array.isArray(selectors)
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? selectors
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: Array.from(selectors);
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return arr.map(s => {
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return rePseudoElements.test(s)
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? s.replace(rePseudoElements, '')
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: s;
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}).join(',\n');
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};
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const allSelectors = vAPI.domFilterer.getAllSelectors();
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const matchedSelectors = [];
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if ( Array.isArray(allSelectors.declarative) ) {
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const declarativeSet = new Set();
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for ( const block of allSelectors.declarative ) {
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for ( const selector of block.split(',\n') ) {
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declarativeSet.add(selector);
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}
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}
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if ( hasSelector(safeGroupSelectors(declarativeSet)) ) {
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for ( const selector of declarativeSet ) {
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if ( safeQuerySelector(selector) === null ) { continue; }
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matchedSelectors.push(`##${selector}`);
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}
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}
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}
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if (
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Array.isArray(allSelectors.procedural) &&
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allSelectors.procedural.length !== 0
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) {
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for ( const pselector of allSelectors.procedural ) {
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if ( pselector.hit === false && pselector.exec().length === 0 ) { continue; }
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matchedSelectors.push(`##${pselector.raw}`);
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}
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}
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if ( Array.isArray(allSelectors.exceptions) ) {
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const exceptionDict = new Map();
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for ( const selector of allSelectors.exceptions ) {
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if ( selector.charCodeAt(0) !== 0x7B /* '{' */ ) {
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exceptionDict.set(selector, selector);
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continue;
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}
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const details = JSON.parse(selector);
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if (
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details.action !== undefined &&
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details.tasks === undefined &&
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details.action[0] === 'style'
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) {
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exceptionDict.set(details.selector, details.raw);
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continue;
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}
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const pselector = vAPI.domFilterer.createProceduralFilter(details);
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if ( pselector.test() === false ) { continue; }
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matchedSelectors.push(`#@#${pselector.raw}`);
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}
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if (
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exceptionDict.size !== 0 &&
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hasSelector(safeGroupSelectors(exceptionDict.keys()))
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) {
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for ( const [ selector, raw ] of exceptionDict ) {
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if ( safeQuerySelector(selector) === null ) { continue; }
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matchedSelectors.push(`#@#${raw}`);
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}
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}
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}
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if ( typeof self.uBO_scriptletsInjected === 'string' ) {
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matchedSelectors.push(...self.uBO_scriptletsInjected.split('\n'));
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}
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if ( matchedSelectors.length === 0 ) { return; }
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return matchedSelectors;
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/******************************************************************************/
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// <<<<<<<< end of private namespace
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})();
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