1// Generated by CoffeeScript 1.7.1
 2var CRC, hex;
 3
 4hex = require('./hex');
 5
 6module.exports = CRC = (function() {
 7  CRC.prototype.INIT_CRC = 0x00;
 8
 9  CRC.prototype.XOR_MASK = 0x00;
10
11  CRC.prototype.WIDTH = 0;
12
13  CRC.prototype.pack = function(crc) {
14    return '';
15  };
16
17  CRC.prototype.each_byte = function(buf, cb) {
18    var i, _i, _ref, _results;
19    if (!Buffer.isBuffer(buf)) {
20      buf = Buffer(buf);
21    }
22    _results = [];
23    for (i = _i = 0, _ref = buf.length - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
24      _results.push(cb(buf[i]));
25    }
26    return _results;
27  };
28
29  function CRC() {
30    this.crc = this.INIT_CRC;
31  }
32
33  CRC.prototype.digest_length = function() {
34    return Math.ceil(this.WIDTH / 8.0);
35  };
36
37  CRC.prototype.update = function(data) {};
38
39  CRC.prototype.reset = function() {
40    return this.crc = this.INIT_CRC;
41  };
42
43  CRC.prototype.checksum = function(signed) {
44    var sum;
45    if (signed == null) {
46      signed = true;
47    }
48    sum = this.crc ^ this.XOR_MASK;
49    if (signed) {
50      sum = sum >>> 0;
51    }
52    return sum;
53  };
54
55  CRC.prototype.finish = function() {
56    return this.pack(this.checksum());
57  };
58
59  CRC.prototype.hexdigest = function(value) {
60    var result;
61    if (value != null) {
62      this.update(value);
63    }
64    result = this.finish();
65    this.reset();
66    return result;
67  };
68
69  return CRC;
70
71})();