Initial drop

Author: Tyler Garlick

.gitignore

@@ -1,4 +1,38 @@
-simple-uuid
+Simple UUID
 ===========
 
-Simply generates a GUID in both Node.js and the browser
+Simply generates a UUID in both Node.js and the browser.  This code was taken from Jeff Ward (jcward.com) and http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136.  I simply wanted to turn it into a bower package and an npm package for simplicity.
+
+## Browser
+
+**Install via Bower**
+
+```
+bower install simple-uuid --save
+```
+
+**In your HTML**
+
+```html
+    <script src="bower_components/simple-uuid/uuid.js"></script>
+```
+
+**In your code**
+```javascript
+var uuid = UUID.generate();
+```
+
+## Node.js
+
+**NPM**
+
+```
+npm install simple-uuid --save
+```
+
+**In your code**
+```javascript
+var UUID = require('simple-uuid');
+var uuid = UUID.generate();
+```
+

README.md

@@ -0,0 +1,25 @@
+{
+  "name": "simple-uuid",
+  "version": "0.0.1",
+  "homepage": "https://github.com/TylerGarlick/simple-uuid",
+  "authors": [
+    "Tyler Garlick <tjgarlick@gmail.com>"
+  ],
+  "description": "Simple UUID generation",
+  "main": "uuid.js",
+  "moduleType": [
+    "node"
+  ],
+  "keywords": [
+    "uuid",
+    "guid"
+  ],
+  "license": "MIT",
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "bower_components",
+    "test",
+    "tests"
+  ]
+}

bower.json

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+module.exports = require('./lib/uuid-node');

index.js

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+'use strict';
+
+exports = module.exports;
+
+/**
+ * Generates a UUID
+ * @returns {string}
+ */
+exports.generate = function () {
+  var lut = [];
+  for(var i = 0; i < 256; i++) {
+    lut[i] = (i < 16 ? '0' : '') + (i).toString(16);
+  }
+
+  var d0 = Math.random() * 0xffffffff | 0;
+  var d1 = Math.random() * 0xffffffff | 0;
+  var d2 = Math.random() * 0xffffffff | 0;
+  var d3 = Math.random() * 0xffffffff | 0;
+
+  return lut[d0 & 0xff] + lut[d0 >> 8 & 0xff] + lut[d0 >> 16 & 0xff] + lut[d0 >> 24 & 0xff] + '-' +
+    lut[d1 & 0xff] + lut[d1 >> 8 & 0xff] + '-' + lut[d1 >> 16 & 0x0f | 0x40] + lut[d1 >> 24 & 0xff] + '-' +
+    lut[d2 & 0x3f | 0x80] + lut[d2 >> 8 & 0xff] + '-' + lut[d2 >> 16 & 0xff] + lut[d2 >> 24 & 0xff] +
+    lut[d3 & 0xff] + lut[d3 >> 8 & 0xff] + lut[d3 >> 16 & 0xff] + lut[d3 >> 24 & 0xff];
+};

lib/uuid-node.js

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+{
+  "name": "simple-uuid",
+  "version": "1.0.0",
+  "description": "Simple UUID generation",
+  "main": "index.js",
+  "scripts": {
+    "test": "mocha test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://TylerGarlick@github.com/TylerGarlick/simple-uuid"
+  },
+  "keywords": [
+    "uuid",
+    "guid"
+  ],
+  "author": "Tyler Garlick <tjgarlick@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/TylerGarlick/simple-uuid/issues"
+  },
+  "homepage": "https://github.com/TylerGarlick/simple-uuid",
+  "devDependencies": {
+    "chai": "^1.10.0",
+    "lodash": "^2.4.1",
+    "mocha": "^2.1.0"
+  }
+}

package.json

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+'use strict';
+
+var expect = require('chai').expect
+  , _ = require('lodash');
+
+var UUID = require('../');
+
+describe('UUID', function () {
+
+  describe('#generate()', function () {
+
+    it('should be able to generate a UUID', function () {
+      var uuid = UUID.generate();
+      expect(uuid).to.be.ok();
+      expect(uuid).to.have.length(36);
+    });
+
+    it('should generate 100 random UUID\'s', function () {
+      var uuids = [];
+      for(var i = 0; i < 100; i++) {
+        var uuid = UUID.generate();
+        expect(_.contains(uuids, uuid)).to.be.false();
+        uuids.push(uuid);
+      }
+      expect(uuids).to.have.length(100);
+    });
+
+  });
+});

test/uuid.js

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+/**
+ * Fast UUID generator, RFC4122 version 4 compliant.
+ * @author Jeff Ward (jcward.com).
+ * @license MIT license
+ * @link http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
+ **/
+var UUID = (function () {
+  'use strict';
+  var self = {};
+  var lut = [];
+
+  for(var i = 0; i < 256; i++) {
+    lut[i] = (i < 16 ? '0' : '') + (i).toString(16);
+  }
+
+  /**
+   * Generates a UUID
+   * @returns {string}
+   */
+  self.generate = function () {
+    var d0 = Math.random() * 0xffffffff | 0;
+    var d1 = Math.random() * 0xffffffff | 0;
+    var d2 = Math.random() * 0xffffffff | 0;
+    var d3 = Math.random() * 0xffffffff | 0;
+    return lut[d0 & 0xff] + lut[d0 >> 8 & 0xff] + lut[d0 >> 16 & 0xff] + lut[d0 >> 24 & 0xff] + '-' +
+      lut[d1 & 0xff] + lut[d1 >> 8 & 0xff] + '-' + lut[d1 >> 16 & 0x0f | 0x40] + lut[d1 >> 24 & 0xff] + '-' +
+      lut[d2 & 0x3f | 0x80] + lut[d2 >> 8 & 0xff] + '-' + lut[d2 >> 16 & 0xff] + lut[d2 >> 24 & 0xff] +
+      lut[d3 & 0xff] + lut[d3 >> 8 & 0xff] + lut[d3 >> 16 & 0xff] + lut[d3 >> 24 & 0xff];
+  };
+  return self;
+
+})();