mirror of
https://github.com/gorhill/uBlock.git
synced 2024-07-08 12:57:57 +02:00
f2d7413a42
This is to reduce the diff size of rulesets in new releases. Beside smaller diff size, this also makes it easier to investigate rule changes across releases.
109 lines
3.8 KiB
JavaScript
109 lines
3.8 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 afterFiles = await fs.readdir(`${afterDir}/rulesets/main`);
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const writePromises = [];
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for ( const file of afterFiles ) {
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let raw = await fs.readFile(`${beforeDir}/rulesets/main/${file}`, 'utf-8').catch(( ) => '');
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let beforeRules;
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try { beforeRules = JSON.parse(raw); } catch(_) { }
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if ( Array.isArray(beforeRules) === false ) { continue; }
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raw = await fs.readFile(`${afterDir}/rulesets/main/${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 usedIds = 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 ( usedIds.has(beforeId) ) { continue; }
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afterRule.id = beforeId;
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usedIds.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 ( usedIds.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 lines = [];
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for ( const afterRule of afterRules ) {
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lines.push(JSON.stringify(afterRule));
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}
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writePromises.push(
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fs.writeFile(
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`${afterDir}/rulesets/main/${file}`,
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`[\n${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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