socketioMEANseed/server/node_modules/crc/lib/crc.js

// Generated by CoffeeScript 1.7.1
var CRC, hex;

hex = require('./hex');

module.exports = CRC = (function() {
  CRC.prototype.INIT_CRC = 0x00;

  CRC.prototype.XOR_MASK = 0x00;

  CRC.prototype.WIDTH = 0;

  CRC.prototype.pack = function(crc) {
    return '';
  };

  CRC.prototype.each_byte = function(buf, cb) {
    var i, _i, _ref, _results;
    if (!Buffer.isBuffer(buf)) {
      buf = Buffer(buf);
    }
    _results = [];
    for (i = _i = 0, _ref = buf.length - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
      _results.push(cb(buf[i]));
    }
    return _results;
  };

  function CRC() {
    this.crc = this.INIT_CRC;
  }

  CRC.prototype.digest_length = function() {
    return Math.ceil(this.WIDTH / 8.0);
  };

  CRC.prototype.update = function(data) {};

  CRC.prototype.reset = function() {
    return this.crc = this.INIT_CRC;
  };

  CRC.prototype.checksum = function(signed) {
    var sum;
    if (signed == null) {
      signed = true;
    }
    sum = this.crc ^ this.XOR_MASK;
    if (signed) {
      sum = sum >>> 0;
    }
    return sum;
  };

  CRC.prototype.finish = function() {
    return this.pack(this.checksum());
  };

  CRC.prototype.hexdigest = function(value) {
    var result;
    if (value != null) {
      this.update(value);
    }
    result = this.finish();
    this.reset();
    return result;
  };

  return CRC;

})();