72 lines
1.4 KiB
JavaScript
72 lines
1.4 KiB
JavaScript
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// Generated by CoffeeScript 1.7.1
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var CRC, hex;
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hex = require('./hex');
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module.exports = CRC = (function() {
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CRC.prototype.INIT_CRC = 0x00;
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CRC.prototype.XOR_MASK = 0x00;
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CRC.prototype.WIDTH = 0;
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CRC.prototype.pack = function(crc) {
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return '';
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};
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CRC.prototype.each_byte = function(buf, cb) {
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var i, _i, _ref, _results;
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if (!Buffer.isBuffer(buf)) {
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buf = Buffer(buf);
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}
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_results = [];
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for (i = _i = 0, _ref = buf.length - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
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_results.push(cb(buf[i]));
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}
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return _results;
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};
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function CRC() {
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this.crc = this.INIT_CRC;
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}
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CRC.prototype.digest_length = function() {
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return Math.ceil(this.WIDTH / 8.0);
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};
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CRC.prototype.update = function(data) {};
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CRC.prototype.reset = function() {
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return this.crc = this.INIT_CRC;
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};
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CRC.prototype.checksum = function(signed) {
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var sum;
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if (signed == null) {
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signed = true;
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}
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sum = this.crc ^ this.XOR_MASK;
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if (signed) {
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sum = sum >>> 0;
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}
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return sum;
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};
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CRC.prototype.finish = function() {
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return this.pack(this.checksum());
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};
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CRC.prototype.hexdigest = function(value) {
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var result;
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if (value != null) {
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this.update(value);
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}
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result = this.finish();
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this.reset();
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return result;
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};
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return CRC;
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})();
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