md51 = function()

in packages/babel-plugin-standalone/src/SparkMD5.js [165:204]

• 34 lines of code
• 6 McCabe index (conditional complexity)

  md51 = function (s) {
    var n = s.length,
      state = [1732584193, -271733879, -1732584194, 271733878],
      i,
      length,
      tail,
      tmp,
      lo,
      hi;

    for (i = 64; i <= n; i += 64) {
      md5cycle(state, md5blk(s.substring(i - 64, i)));
    }
    s = s.substring(i - 64);
    length = s.length;
    tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
    for (i = 0; i < length; i += 1) {
      tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
    }
    tail[i >> 2] |= 0x80 << (i % 4 << 3);
    if (i > 55) {
      md5cycle(state, tail);
      for (i = 0; i < 16; i += 1) {
        tail[i] = 0;
      }
    }

    // Beware that the final length might not
    // fit in 32 bits so we take care of that
    tmp = n * 8;
    tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
    lo = parseInt(tmp[2], 16);
    hi = parseInt(tmp[1], 16) || 0;

    tail[14] = lo;
    tail[15] = hi;

    md5cycle(state, tail);
    return state;
  },