big consolidation

fnf2014/js/hackordrink/uuid.js

@@ -0,0 +1,55 @@
+
+**
+ * UUID.core.js: The minimal subset of the RFC-compliant UUID generator UUID.js.
+ *
+ * @fileOverview
+ * @author  LiosK
+ * @version core-1.0
+ * @license The MIT License: Copyright (c) 2012 LiosK.
+ */
+
+/** @constructor */
+function UUID() {}
+
+/**
+ * The simplest function to get an UUID string.
+ * @returns {string} A version 4 UUID string.
+ */
+UUID.generate = function() {
+  var rand = UUID._gri, hex = UUID._ha;
+  return  hex(rand(32), 8)          // time_low
+        + "-"
+        + hex(rand(16), 4)          // time_mid
+        + "-"
+        + hex(0x4000 | rand(12), 4) // time_hi_and_version
+        + "-"
+        + hex(0x8000 | rand(14), 4) // clock_seq_hi_and_reserved clock_seq_low
+        + "-"
+        + hex(rand(48), 12);        // node
+};
+
+/**
+ * Returns an unsigned x-bit random integer.
+ * @param {int} x A positive integer ranging from 0 to 53, inclusive.
+ * @returns {int} An unsigned x-bit random integer (0 <= f(x) < 2^x).
+ */
+UUID._gri = function(x) { // _getRandomInt
+  if (x <   0) return NaN;
+  if (x <= 30) return (0 | Math.random() * (1 <<      x));
+  if (x <= 53) return (0 | Math.random() * (1 <<     30))
+                    + (0 | Math.random() * (1 << x - 30)) * (1 << 30);
+  return NaN;
+};
+
+/**
+ * Converts an integer to a zero-filled hexadecimal string.
+ * @param {int} num
+ * @param {int} length
+ * @returns {string}
+ */
+UUID._ha = function(num, length) {  // _hexAligner
+  var str = num.toString(16), i = length - str.length, z = "0";
+  for (; i > 0; i >>>= 1, z += z) { if (i & 1) { str = z + str; } }
+  return str;
+};
+