https://www.getrealme.com/wp-content/plugins/wp-testing/vendor/broofa/node-uuid/uuid.js?ver=6.3.13

1//     uuid.js
2//
3//     Copyright (c) 2010-2012 Robert Kieffer
4//     MIT License - http://opensource.org/licenses/mit-license.php
5
6/*global window, require, define */
7(function(_window) {
8  'use strict';
9
10  // Unique ID creation requires a high quality random # generator.  We feature
11  // detect to determine the best RNG source, normalizing to a function that
12  // returns 128-bits of randomness, since that's what's usually required
13  var _rng, _mathRNG, _nodeRNG, _whatwgRNG, _previousRoot;
14
15  function setupBrowser() {
16    // Allow for MSIE11 msCrypto
17    var _crypto = _window.crypto || _window.msCrypto;
18
19    if (!_rng && _crypto && _crypto.getRandomValues) {
20      // WHATWG crypto-based RNG - http://wiki.whatwg.org/wiki/Crypto
21      //
22      // Moderately fast, high quality
23      try {
24        var _rnds8 = new Uint8Array(16);
25        _whatwgRNG = _rng = function whatwgRNG() {
26          _crypto.getRandomValues(_rnds8);
27          return _rnds8;
28        };
29        _rng();
30      } catch(e) {}
31    }
32
33    if (!_rng) {
34      // Math.random()-based (RNG)
35      //
36      // If all else fails, use Math.random().  It's fast, but is of unspecified
37      // quality.
38      var  _rnds = new Array(16);
39      _mathRNG = _rng = function() {
40        for (var i = 0, r; i < 16; i++) {
41          if ((i & 0x03) === 0) { r = Math.random() * 0x100000000; }
42          _rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
43        }
44
45        return _rnds;
46      };
47      if ('undefined' !== typeof console && console.warn) {
48        console.warn("[SECURITY] node-uuid: crypto not usable, falling back to insecure Math.random()");
49      }
50    }
51  }
52
53  function setupNode() {
54    // Node.js crypto-based RNG - http://nodejs.org/docs/v0.6.2/api/crypto.html
55    //
56    // Moderately fast, high quality
57    if ('function' === typeof require) {
58      try {
59        var _rb = require('crypto').randomBytes;
60        _nodeRNG = _rng = _rb && function() {return _rb(16);};
61        _rng();
62      } catch(e) {}
63    }
64  }
65
66  if (_window) {
67    setupBrowser();
68  } else {
69    setupNode();
70  }
71
72  // Buffer class to use
73  var BufferClass = ('function' === typeof Buffer) ? Buffer : Array;
74
75  // Maps for number <-> hex string conversion
76  var _byteToHex = [];
77  var _hexToByte = {};
78  for (var i = 0; i < 256; i++) {
79    _byteToHex[i] = (i + 0x100).toString(16).substr(1);
80    _hexToByte[_byteToHex[i]] = i;
81  }
82
83  // **`parse()` - Parse a UUID into it's component bytes**
84  function parse(s, buf, offset) {
85    var i = (buf && offset) || 0, ii = 0;
86
87    buf = buf || [];
88    s.toLowerCase().replace(/[0-9a-f]{2}/g, function(oct) {
89      if (ii < 16) { // Don't overflow!
90        buf[i + ii++] = _hexToByte[oct];
91      }
92    });
93
94    // Zero out remaining bytes if string was short
95    while (ii < 16) {
96      buf[i + ii++] = 0;
97    }
98
99    return buf;
100  }
101
102  // **`unparse()` - Convert UUID byte array (ala parse()) into a string**
103  function unparse(buf, offset) {
104    var i = offset || 0, bth = _byteToHex;
105    return  bth[buf[i++]] + bth[buf[i++]] +
106            bth[buf[i++]] + bth[buf[i++]] + '-' +
107            bth[buf[i++]] + bth[buf[i++]] + '-' +
108            bth[buf[i++]] + bth[buf[i++]] + '-' +
109            bth[buf[i++]] + bth[buf[i++]] + '-' +
110            bth[buf[i++]] + bth[buf[i++]] +
111            bth[buf[i++]] + bth[buf[i++]] +
112            bth[buf[i++]] + bth[buf[i++]];
113  }
114
115  // **`v1()` - Generate time-based UUID**
116  //
117  // Inspired by https://github.com/LiosK/UUID.js
118  // and http://docs.python.org/library/uuid.html
119
120  // random #'s we need to init node and clockseq
121  var _seedBytes = _rng();
122
123  // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
124  var _nodeId = [
125    _seedBytes[0] | 0x01,
126    _seedBytes[1], _seedBytes[2], _seedBytes[3], _seedBytes[4], _seedBytes[5]
127  ];
128
129  // Per 4.2.2, randomize (14 bit) clockseq
130  var _clockseq = (_seedBytes[6] << 8 | _seedBytes[7]) & 0x3fff;
131
132  // Previous uuid creation time
133  var _lastMSecs = 0, _lastNSecs = 0;
134
135  // See https://github.com/broofa/node-uuid for API details
136  function v1(options, buf, offset) {
137    var i = buf && offset || 0;
138    var b = buf || [];
139
140    options = options || {};
141
142    var clockseq = (options.clockseq != null) ? options.clockseq : _clockseq;
143
144    // UUID timestamps are 100 nano-second units since the Gregorian epoch,
145    // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
146    // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
147    // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
148    var msecs = (options.msecs != null) ? options.msecs : new Date().getTime();
149
150    // Per 4.2.1.2, use count of uuid's generated during the current clock
151    // cycle to simulate higher resolution clock
152    var nsecs = (options.nsecs != null) ? options.nsecs : _lastNSecs + 1;
153
154    // Time since last uuid creation (in msecs)
155    var dt = (msecs - _lastMSecs) + (nsecs - _lastNSecs)/10000;
156
157    // Per 4.2.1.2, Bump clockseq on clock regression
158    if (dt < 0 && options.clockseq == null) {
159      clockseq = clockseq + 1 & 0x3fff;
160    }
161
162    // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
163    // time interval
164    if ((dt < 0 || msecs > _lastMSecs) && options.nsecs == null) {
165      nsecs = 0;
166    }
167
168    // Per 4.2.1.2 Throw error if too many uuids are requested
169    if (nsecs >= 10000) {
170      throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
171    }
172
173    _lastMSecs = msecs;
174    _lastNSecs = nsecs;
175    _clockseq = clockseq;
176
177    // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
178    msecs += 12219292800000;
179
180    // `time_low`
181    var tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
182    b[i++] = tl >>> 24 & 0xff;
183    b[i++] = tl >>> 16 & 0xff;
184    b[i++] = tl >>> 8 & 0xff;
185    b[i++] = tl & 0xff;
186
187    // `time_mid`
188    var tmh = (msecs / 0x100000000 * 10000) & 0xfffffff;
189    b[i++] = tmh >>> 8 & 0xff;
190    b[i++] = tmh & 0xff;
191
192    // `time_high_and_version`
193    b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
194    b[i++] = tmh >>> 16 & 0xff;
195
196    // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
197    b[i++] = clockseq >>> 8 | 0x80;
198
199    // `clock_seq_low`
200    b[i++] = clockseq & 0xff;
201
202    // `node`
203    var node = options.node || _nodeId;
204    for (var n = 0; n < 6; n++) {
205      b[i + n] = node[n];
206    }
207
208    return buf ? buf : unparse(b);
209  }
210
211  // **`v4()` - Generate random UUID**
212
213  // See https://github.com/broofa/node-uuid for API details
214  function v4(options, buf, offset) {
215    // Deprecated - 'format' argument, as supported in v1.2
216    var i = buf && offset || 0;
217
218    if (typeof(options) === 'string') {
219      buf = (options === 'binary') ? new BufferClass(16) : null;
220      options = null;
221    }
222    options = options || {};
223
224    var rnds = options.random || (options.rng || _rng)();
225
226    // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
227    rnds[6] = (rnds[6] & 0x0f) | 0x40;
228    rnds[8] = (rnds[8] & 0x3f) | 0x80;
229
230    // Copy bytes to buffer, if provided
231    if (buf) {
232      for (var ii = 0; ii < 16; ii++) {
233        buf[i + ii] = rnds[ii];
234      }
235    }
236
237    return buf || unparse(rnds);
238  }
239
240  // Export public API
241  var uuid = v4;
242  uuid.v1 = v1;
243  uuid.v4 = v4;
244  uuid.parse = parse;
245  uuid.unparse = unparse;
246  uuid.BufferClass = BufferClass;
247  uuid._rng = _rng;
248  uuid._mathRNG = _mathRNG;
249  uuid._nodeRNG = _nodeRNG;
250  uuid._whatwgRNG = _whatwgRNG;
251
252  if (('undefined' !== typeof module) && module.exports) {
253    // Publish as node.js module
254    module.exports = uuid;
255  } else if (typeof define === 'function' && define.amd) {
256    // Publish as AMD module
257    define(function() {return uuid;});
258
259
260  } else {
261    // Publish as global (in browsers)
262    _previousRoot = _window.uuid;
263
264    // **`noConflict()` - (browser only) to reset global 'uuid' var**
265    uuid.noConflict = function() {
266      _window.uuid = _previousRoot;
267      return uuid;
268    };
269
270    _window.uuid = uuid;
271  }
272})('undefined' !== typeof window ? window : null);