js-7z/index.js

🏭 7zip functions in NodeJS 🏭

/**
 * @author FellGill
 * @license Apache 2.0
 *
 * Copyright 2020 FellGill
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const Arch = process.arch;
const ChildProcess = require('child_process');

function getSevenZPath() {
  const SevenZPath = `7z/${Arch === 'x64' ? 'x64/7za.exe' : '7za.exe'}`;

  if(__dirname.includes('node_modules')) {
    return `./node_modules/js-7z/${SevenZPath}`;
  } else {
    return `./${SevenZPath}`;
  }
}

/**
 * Extract zip file
 *
 * @param {String} file - File that we want to decompress
 * @param {String} out - Folder where we want the file to be decompressed
 */
exports.Extract = function(file, out, callback) {
  var Process = ChildProcess.spawn(getSevenZPath(), ['x', `-o${out}`, file]);

  Process.on('exit', function(exitCode) {
    callback(exitCode);
  });
};

/**
 * Zip a folder
 *
 * @param {String} file - File URL
 * @param {String} folder - Folder you want to compress
 */
exports.Compress = function(file, folder, callback) {
  // Best compression method (?)
  const CompressionArgs = [
    'a',
    '-t7z',
    '-mx=9',
    '-mfb=273',
    '-ms',
    '-md=31',
    '-myx=9',
    '-mtm=-',
    '-mmt',
    '-mmtf',
    '-md=1536m',
    '-mmf=bt3',
    '-mmc=10000',
    '-mpb=0',
    '-mlc=0',
    file,
    folder,
  ];

  var Process = ChildProcess.spawn(getSevenZPath(), CompressionArgs);

  Process.on('exit', function(exitCode) {
    callback(exitCode);
  });
};