1 files changed, 201 insertions, 0 deletions
diff --git a/uAssets/tools/make-easylist.mjs b/uAssets/tools/make-easylist.mjs
new file mode 100644
index 0000000..b648363
--- /dev/null
+++ b/uAssets/tools/make-easylist.mjs
@@ -0,0 +1,201 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2022-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
+*/
+
+// jshint node:true, esversion:9
+
+'use strict';
+
+/******************************************************************************/
+
+import fs from 'fs/promises';
+import path from 'path';
+import process from 'process';
+
+/******************************************************************************/
+
+const expandedParts = new Set();
+
+/******************************************************************************/
+
+const commandLineArgs = (( ) => {
+    const args = new Map();
+    let name, value;
+    for ( const arg of process.argv.slice(2) ) {
+        const pos = arg.indexOf('=');
+        if ( pos === -1 ) {
+            name = arg;
+            value = '';
+        } else {
+            name = arg.slice(0, pos);
+            value = arg.slice(pos+1);
+        }
+        args.set(name, value);
+    }
+    return args;
+})();
+
+/******************************************************************************/
+
+function expandTemplate(wd, parts) {
+    const out = [];
+    const reInclude = /^%include +(.+):(.+)%\s+/gm;
+    const trim = text => trimSublist(text);
+    for ( const part of parts ) {
+        if ( typeof part !== 'string' ) {
+            out.push(part);
+            continue;
+        }
+        let lastIndex = 0;
+        for (;;) {
+            const match = reInclude.exec(part);
+            if ( match === null ) { break; }
+            out.push(part.slice(lastIndex, match.index).trim());
+            const repo = match[1].trim();
+            const fpath = `${match[2].trim()}`;
+            if ( expandedParts.has(fpath) === false ) {
+                console.info(`  Inserting ${fpath}`);
+                out.push(
+                    out.push({ file: `${fpath}` }),
+                    `! *** ${repo}:${fpath} ***`,
+                    fs.readFile(`${wd}/${fpath}`, { encoding: 'utf8' })
+                        .then(text => fpath.includes('header') ? text : trim(text)),
+                );
+                expandedParts.add(fpath);
+            }
+            lastIndex = reInclude.lastIndex;
+        }
+        out.push(part.slice(lastIndex).trim());
+    }
+    return out;
+}
+
+/******************************************************************************/
+
+function expandIncludeDirectives(wd, parts) {
+    const out = [];
+    const reInclude = /^!#include (.+)\s*/gm;
+    const trim = text => trimSublist(text);
+    let parentPath = '';
+    for ( const part of parts ) {
+        if ( typeof part !== 'string' ) {
+            if ( typeof part === 'object' && part.file !== undefined ) {
+                parentPath = part.file;
+            }
+            out.push(part);
+            continue;
+        }
+        let lastIndex = 0;
+        for (;;) {
+            const match = reInclude.exec(part);
+            if ( match === null ) { break; }
+            out.push(part.slice(lastIndex, match.index).trim());
+            const fpath = `${path.dirname(parentPath)}/${match[1].trim()}`;
+            if ( expandedParts.has(fpath) === false ) {
+                console.info(`  Inserting ${fpath}`);
+                out.push(
+                    { file: fpath },
+                    `! *** ${fpath} ***`,
+                    fs.readFile(`${wd}/${fpath}`, { encoding: 'utf8' })
+                        .then(text => fpath.includes('header') ? text : trim(text)),
+                );
+                expandedParts.add(fpath);
+            }
+            lastIndex = reInclude.lastIndex;
+        }
+        out.push(part.slice(lastIndex).trim());
+    }
+    return out;
+}
+
+/******************************************************************************/
+
+function trimSublist(text) {
+    // Remove empty comment lines
+    text = text.replace(/^!\s*$(?:\r\n|\n)/gm, '');
+    // Remove sublist header information: the importing list will provide its
+    // own header.
+    text = text.trim().replace(/^(?:!\s+[^\r\n]+?(?:\r\n|\n))+/s, '');
+    return text;
+}
+
+/******************************************************************************/
+
+function minify(text) {
+    // remove issue-related comments
+    text = text.replace(/^! https:\/\/.*?[\n\r]+/gm, '');
+    // remove empty lines
+    text = text.replace(/^[\n\r]+/gm, '');
+    // convert potentially present Windows-style newlines
+    text = text.replace(/\r\n/g, '\n');
+    return text;
+}
+
+/******************************************************************************/
+
+function assemble(parts) {
+    const out = [];
+    for ( const part of parts ) {
+        if ( typeof part !== 'string' ) { continue; }
+        out.push(part);
+    }
+    return out.join('\n').trim() + '\n';
+}
+
+/******************************************************************************/
+
+async function main() {
+    const workingDir = commandLineArgs.get('dir') || '.';
+    const inFile = commandLineArgs.get('in');
+    if ( typeof inFile !== 'string' || inFile === '' ) {
+        process.exit(1);
+    }
+    const outFile = commandLineArgs.get('out');
+    if ( typeof outFile !== 'string' || outFile === '' ) {
+        process.exit(1);
+    }
+
+    console.info(`  Using template at ${inFile}`);
+
+    const inText = fs.readFile(`${workingDir}/${inFile}`, { encoding: 'utf8' });
+
+    let parts = [ inText ];
+    do {
+        parts = await Promise.all(parts);
+        parts = expandTemplate(workingDir, parts);
+    } while ( parts.some(v => v instanceof Promise) );
+
+    do {
+        parts = await Promise.all(parts);
+        parts = expandIncludeDirectives(workingDir, parts);
+    } while ( parts.some(v => v instanceof Promise));
+
+    let afterText = assemble(parts);
+
+    if ( commandLineArgs.get('minify') !== undefined ) {
+        afterText = minify(afterText);
+    }
+
+    console.info(`  Creating ${outFile}`);
+
+    fs.writeFile(outFile, afterText);
+}
+
+main();