gzip-uncompressed-size/example.js

Determine the estimated uncompressed size from a GZIP file (uses ISIZE)

/*
 * The MIT License
 *
 * Copyright (c) 2016 Juan Cruz Viotti. https://github.com/jviotti
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

'use strict';

const gzipUncompressedSize = require('./index');
const FILE = process.argv[2];

if (!FILE) {
  console.error(`Usage: ${process.argv.slice(0, 2).join(' ')} <gzip-file>`);
  process.exit(1);
}

gzipUncompressedSize.fromFile(FILE, (error, uncompressedSize) => {
  if (error) {
    console.error(error);
    process.exit(1);
  }

  console.log(uncompressedSize);
});