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