deep-package-manager/lib.compiled/Assets/Optimizer.js

DEEP Package Manager

/**
 * Created by AlexanderC on 12/15/15.
 */

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Optimizer = undefined;

var _Exec = require('../Helpers/Exec');

class Optimizer {
  /**
   * @param {String} path
   */
  constructor(path) {
    this._path = path;

    this._compressionLevel = Optimizer.COMPRESSION_LEVEL;
  }

  /**
   * @param {String[]} excludeExtensions
   * @param {Function} callback
   */
  optimize(excludeExtensions = [], callback = () => {}) {
    console.debug(`Optimize frontend in '${this._path}' by compressing it`);

    excludeExtensions.push('gz'); // exclude *.gz by default

    let pattern = '';
    excludeExtensions.forEach(extension => {
      pattern += ` -name "*.${extension}" -o`;
    });

    pattern = pattern.slice(0, -2); // remove last chars '-o'

    let cmd = new _Exec.Exec('find', // find
    '.', // in current directory
    '-type f', // all files
    `! \\( ${pattern} \\)`, // exclude passed extensions
    `-exec gzip -${this._compressionLevel} "{}" \\;`, // compress using desired level
    '-exec mv "{}.gz" "{}" \\;' // restore files original names
    );
    cmd.cwd = this._path;

    cmd.avoidBufferOverflow().run(result => {
      if (result.failed) {
        callback(result.error);
        return;
      }

      callback(null);
    });
  }

  /**
   * @returns {Number}
   */
  get compressionLevel() {
    return this._compressionLevel;
  }

  /**
   * @param {Number} level
   */
  set compressionLevel(level) {
    this._compressionLevel = parseInt(level);
  }

  /**
   * @returns {String}
   */
  get path() {
    return this._path;
  }

  /**
   * @returns {Number}
   */
  static get COMPRESSION_LEVEL() {
    return 9;
  }
}
exports.Optimizer = Optimizer;