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Markus Nellen-Schmitz
240
example.js
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240
example.js
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const { PakUnpacker } = require('./PakUnpacker');
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const path = require('path');
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/**
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* Example 1: Extract all files from a PAK archive
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*/
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async function extractAllFiles() {
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const pakFile = path.join(__dirname, 'data.pak'); // Adjust path as needed
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const outputDir = path.join(__dirname, '../output');
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try {
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console.log('Loading PAK file...');
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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console.log(`Found ${unpacker.entries.length} files in the archive.`);
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console.log('\nExtracting files...');
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await unpacker.extract(outputDir);
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console.log('\nExtraction complete!');
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} catch (error) {
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console.error('Error:', error.message);
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}
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}
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/**
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* Example 2: List all files without extracting
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*/
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async function listFiles() {
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const pakFile = path.join(__dirname, '../test.pak');
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try {
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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const files = unpacker.listFiles();
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console.log(`\nFiles in archive (${files.length} total):\n`);
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files.forEach(file => {
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const compressed = file.compressed ? '[Zlib]' : '[None]';
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console.log(`${compressed} ${file.name} (${file.size} -> ${file.originalSize} bytes)`);
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});
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} catch (error) {
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console.error('Error:', error.message);
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}
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}
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/**
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* Example 3: Extract a specific file
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*/
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async function extractSingleFile() {
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const pakFile = path.join(__dirname, 'data.pak');
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const fileName = 'config.json'; // Change to your target file
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const outputPath = path.join(__dirname, '../output', fileName);
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try {
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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// Method 1: Extract file directly to disk
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const success = await unpacker.extractFile(fileName, outputPath);
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if (success) {
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console.log(`\nSuccessfully extracted ${fileName}`);
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} else {
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console.log(`File not found: ${fileName}`);
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}
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// Method 2: Get file data in memory (without saving)
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// const fileData = await unpacker.getFile(fileName);
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// if (fileData) {
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// console.log(`\nFound file: ${fileName}`);
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// console.log(`Size: ${fileData.length} bytes`);
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// // If it's a text file, you can print its content
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// console.log('\nContent:');
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// console.log(fileData.toString('utf8'));
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// }
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} catch (error) {
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console.error('Error:', error.message);
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}
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}
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/**
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* Example 4: Use with Express.js API
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*/
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function expressApiExample() {
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// This is just a code example, not executable
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const express = require('express');
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const app = express();
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app.get('/api/pak/list/:pakName', async (req, res) => {
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try {
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const pakFile = path.join(__dirname, '../paks', req.params.pakName + '.pak');
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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const files = unpacker.listFiles();
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res.json({ success: true, files });
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} catch (error) {
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res.status(500).json({ success: false, error: error.message });
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}
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});
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app.get('/api/pak/extract/:pakName/:fileName(*)', async (req, res) => {
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try {
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const pakFile = path.join(__dirname, '../paks', req.params.pakName + '.pak');
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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const fileData = await unpacker.getFile(req.params.fileName);
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if (fileData) {
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res.setHeader('Content-Type', 'application/octet-stream');
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res.setHeader('Content-Disposition', `attachment; filename="${path.basename(req.params.fileName)}"`);
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res.send(fileData);
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} else {
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res.status(404).json({ success: false, error: 'File not found' });
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}
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} catch (error) {
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res.status(500).json({ success: false, error: error.message });
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}
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});
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app.listen(3000, () => {
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console.log('API server running on port 3000');
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});
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}
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/**
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* Example 5: Extract files by pattern (e.g., all *.conf files)
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*/
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async function extractByPattern() {
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const pakFile = path.join(__dirname, 'data.pak');
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const pattern = '*.conf'; // You can use: "*.conf", "*.json", "config/*.xml", "**/*.txt"
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const outputDir = path.join(__dirname, '../output');
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try {
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console.log('Loading PAK file...');
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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console.log(`\nSearching for files matching: ${pattern}`);
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const extractedFiles = await unpacker.extractByPattern(pattern, outputDir);
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if (extractedFiles.length > 0) {
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console.log(`\nSuccessfully extracted ${extractedFiles.length} file(s):`);
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extractedFiles.forEach(file => console.log(` - ${file}`));
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} else {
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console.log('\nNo files matched the pattern.');
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}
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} catch (error) {
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console.error('Error:', error.message);
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}
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}
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/**
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* Example 6: Synchronous version (blocking)
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*/
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function syncExample() {
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const pakFile = path.join(__dirname, '../test.pak');
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const outputDir = path.join(__dirname, '../output-sync');
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try {
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console.log('Loading PAK file (sync)...');
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const unpacker = new PakUnpacker(pakFile);
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unpacker.loadSync();
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console.log(`Found ${unpacker.entries.length} files.`);
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console.log('\nExtracting files (sync)...');
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unpacker.extractSync(outputDir);
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console.log('\nExtraction complete!');
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} catch (error) {
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console.error('Error:', error.message);
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}
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}
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async function extractConfFiles() {
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const fs = require('fs');
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const pakDir = path.join(__dirname, 'data'); // Ordner mit den PAK-Dateien
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const outputDir = './output';
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const filePattern = '**/*.c'; // Pattern für die zu extrahierenden Dateien
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try {
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// Alle .pak Dateien im Ordner finden
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const files = fs.readdirSync(pakDir).filter(file => file.endsWith('.pak'));
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if (files.length === 0) {
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console.log('Keine .pak Dateien gefunden im Ordner:', pakDir);
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return;
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}
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console.log(`Gefunden: ${files.length} PAK-Datei(en)\n`);
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let totalExtracted = 0;
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// Jede PAK-Datei nacheinander verarbeiten
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for (const pakFileName of files) {
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const pakFile = path.join(pakDir, pakFileName);
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console.log(`Verarbeite: ${pakFileName}`);
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const unpacker = new PakUnpacker(pakFile);
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await unpacker.load();
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const extractedFiles = await unpacker.extractByPattern(filePattern, outputDir);
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console.log(` → ${extractedFiles.length} Datei(en) extrahiert`);
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totalExtracted += extractedFiles.length;
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}
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console.log(`\nGesamt: ${totalExtracted} Datei(en) aus ${files.length} PAK-Archiv(en) extrahiert`);
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} catch (error) {
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console.error('Fehler:', error.message);
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}
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}
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// Run examples
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if (require.main === module) {
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console.log('=== PAK Unpacker Examples ===\n');
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// Uncomment the example you want to run:
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//extractAllFiles();
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//listFiles();
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//extractSingleFile();
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extractConfFiles();
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//syncExample();
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console.log('Uncomment an example function to run it.');
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}
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module.exports = {
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extractAllFiles,
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listFiles,
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extractSingleFile,
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extractByPattern,
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syncExample
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};
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