mirror of
https://github.com/gorhill/uBlock.git
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126 lines
3.9 KiB
JavaScript
126 lines
3.9 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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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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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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import publicSuffixList from './lib/publicsuffixlist/publicsuffixlist.js';
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import punycode from './lib/punycode.js';
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import staticNetFilteringEngine from './js/static-net-filtering.js';
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import { FilteringContext } from './js/filtering-context.js';
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import { LineIterator } from './js/text-utils.js';
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import { StaticFilteringParser } from './js/static-filtering-parser.js';
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import {
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CompiledListReader,
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CompiledListWriter
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} from './js/static-filtering-io.js';
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/******************************************************************************/
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function compileList(rawText, writer) {
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const lineIter = new LineIterator(rawText);
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const parser = new StaticFilteringParser(true);
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const compiler = staticNetFilteringEngine.createCompiler(parser);
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parser.setMaxTokenLength(staticNetFilteringEngine.MAX_TOKEN_LENGTH);
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while ( lineIter.eot() === false ) {
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let line = lineIter.next();
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while ( line.endsWith(' \\') ) {
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if ( lineIter.peek(4) !== ' ' ) { break; }
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line = line.slice(0, -2).trim() + lineIter.next().trim();
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}
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parser.analyze(line);
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if ( parser.shouldIgnore() ) { continue; }
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if ( parser.category !== parser.CATStaticNetFilter ) { continue; }
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if ( parser.patternHasUnicode() && parser.toASCII() === false ) {
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continue;
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}
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if ( compiler.compile(parser, writer) ) { continue; }
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if ( compiler.error !== undefined ) {
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console.info(JSON.stringify({
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realm: 'message',
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type: 'error',
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text: compiler.error
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}));
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}
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}
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return writer.toString();
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}
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function applyList(name, raw) {
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const writer = new CompiledListWriter();
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writer.properties.set('name', name);
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const compiled = compileList(raw, writer);
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const reader = new CompiledListReader(compiled);
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staticNetFilteringEngine.fromCompiled(reader);
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}
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function enableWASM(path) {
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return Promise.all([
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publicSuffixList.enableWASM(`${path}/lib/publicsuffixlist`),
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staticNetFilteringEngine.enableWASM(`${path}/js`),
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]);
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}
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function pslInit(raw) {
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if ( typeof raw !== 'string' || raw.trim() === '' ) {
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console.info('Unable to populate public suffix list');
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return;
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}
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publicSuffixList.parse(raw, punycode.toASCII);
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console.info('Public suffix list populated');
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}
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function restart(lists) {
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// Remove all filters
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reset();
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if ( Array.isArray(lists) && lists.length !== 0 ) {
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// Populate filtering engine with filter lists
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for ( const { name, raw } of lists ) {
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applyList(name, raw);
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}
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// Commit changes
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staticNetFilteringEngine.freeze();
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staticNetFilteringEngine.optimize();
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}
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return staticNetFilteringEngine;
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}
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function reset() {
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staticNetFilteringEngine.reset();
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}
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export {
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FilteringContext,
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enableWASM,
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pslInit,
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restart,
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};
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