mirror of
https://github.com/gorhill/uBlock.git
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118 lines
4.3 KiB
JavaScript
118 lines
4.3 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a comprehensive, efficient content blocker
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Copyright (C) 2024-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 fs from 'fs/promises';
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import process from 'process';
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/******************************************************************************/
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const commandLineArgs = (( ) => {
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const args = new Map();
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let name, value;
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for ( const arg of process.argv.slice(2) ) {
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const pos = arg.indexOf('=');
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if ( pos === -1 ) {
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name = arg;
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value = '';
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} else {
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name = arg.slice(0, pos);
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value = arg.slice(pos+1);
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}
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args.set(name, value);
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}
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return args;
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})();
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const beforeDir = commandLineArgs.get('before') || '';
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const afterDir = commandLineArgs.get('after') || '';
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if ( beforeDir === '' || afterDir === '' ) {
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process.exit(0);
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}
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/******************************************************************************/
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async function main() {
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const folders = [
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'main',
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'modify-headers',
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'redirect',
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'regex',
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'removeparam',
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];
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const writePromises = [];
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for ( const folder of folders ) {
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const afterFiles = await fs.readdir(`${afterDir}/rulesets/${folder}`);
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for ( const file of afterFiles ) {
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let raw = await fs.readFile(`${beforeDir}/rulesets/${folder}/${file}`, 'utf-8').catch(( ) => '');
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let beforeRules;
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try { beforeRules = JSON.parse(raw); } catch(_) { }
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if ( Array.isArray(beforeRules) === false ) { continue; }
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raw = await fs.readFile(`${afterDir}/rulesets/${folder}/${file}`, 'utf-8').catch(( ) => '');
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let afterRules;
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try { afterRules = JSON.parse(raw); } catch(_) { }
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if ( Array.isArray(afterRules) === false ) { continue; }
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const beforeMap = new Map(beforeRules.map(a => {
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const id = a.id;
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a.id = 0;
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return [ JSON.stringify(a), id ];
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}));
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const reusedIds = new Set();
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for ( const afterRule of afterRules ) {
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afterRule.id = 0;
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const key = JSON.stringify(afterRule);
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const beforeId = beforeMap.get(key);
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if ( beforeId === undefined ) { continue; }
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if ( reusedIds.has(beforeId) ) { continue; }
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afterRule.id = beforeId;
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reusedIds.add(beforeId);
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}
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// Assign new ids to unmatched rules
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let ruleIdGenerator = 1;
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for ( const afterRule of afterRules ) {
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if ( afterRule.id !== 0 ) { continue; }
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while ( reusedIds.has(ruleIdGenerator) ) { ruleIdGenerator += 1; }
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afterRule.id = ruleIdGenerator++;
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}
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afterRules.sort((a, b) => a.id - b.id);
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const indent = afterRules.length > 10 ? undefined : 1;
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const lines = [];
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for ( const afterRule of afterRules ) {
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lines.push(JSON.stringify(afterRule, null, indent));
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}
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const path = `${afterDir}/rulesets/${folder}/${file}`;
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console.log(` Salvaged ${reusedIds.size} ids in ${folder}/${file}`);
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writePromises.push(
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fs.writeFile(path, `[\n${lines.join(',\n')}\n]\n`)
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);
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}
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}
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await Promise.all(writePromises);
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}
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main();
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/******************************************************************************/
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