Gecko [ fernandoquevedodop.com ]

Name	Size	Permission
adler32.js	1.62 KB	-rw-r--r--
constants.js	2.26 KB	-rw-r--r--
crc32.js	1.74 KB	-rw-r--r--
deflate.js	59.15 KB	-rw-r--r--
gzheader.js	2.19 KB	-rw-r--r--
inffast.js	12.37 KB	-rw-r--r--
inflate.js	48.96 KB	-rw-r--r--
inftrees.js	12.28 KB	-rw-r--r--
messages.js	1.5 KB	-rw-r--r--
trees.js	39.22 KB	-rw-r--r--
zstream.js	1.77 KB	-rw-r--r--

Code Editor : adler32.js

'use strict';

// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It isn't worth it to make additional optimizations as in original.
// Small size is preferable.

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

const adler32 = (adler, buf, len, pos) => {
  let s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

s1 %= 65521;
    s2 %= 65521;
  }

return (s1 | (s2 << 16)) |0;
};

module.exports = adler32;

${this.title}

Code Editor : adler32.js