Passed
Push — master ( 3f7d62...9f7df0 )
by Jacob
01:30
created

amd/src/bowser.js   F

Complexity

Total Complexity 151
Complexity/F 12.58

Size

Lines of Code 575
Function Count 12

Duplication

Duplicated Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 0
c 1
b 0
f 0
nc 0
dl 0
loc 575
rs 1.5789
wmc 151
mnd 34
bc 91
fnc 12
bpm 7.5833
cpm 12.5833
noi 7

How to fix   Complexity   

Complexity

Complex classes like amd/src/bowser.js often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

1
/*!
2
 * Bowser - a browser detector
3
 * https://github.com/ded/bowser
4
 * MIT License | (c) Dustin Diaz 2015
5
 */
6
7
define([], function() {
8
//!function (root, name, definition) {
9
//  if (typeof module != 'undefined' && module.exports) module.exports = definition()
10
//  else if (typeof define == 'function' && define.amd) define(name, definition)
11
//  else root[name] = definition()
12
//}(this, 'bowser', function () {
13
  /**
14
    * See useragents.js for examples of navigator.userAgent
15
    */
16
17
  var t = true;
18
19
  function detect(ua) {
20
21
    function getFirstMatch(regex) {
22
      var match = ua.match(regex);
23
      return (match && match.length > 1 && match[1]) || '';
24
    }
25
26
    function getSecondMatch(regex) {
27
      var match = ua.match(regex);
28
      return (match && match.length > 1 && match[2]) || '';
29
    }
30
31
    var iosdevice = getFirstMatch(/(ipod|iphone|ipad)/i).toLowerCase()
32
      , likeAndroid = /like android/i.test(ua)
33
      , android = !likeAndroid && /android/i.test(ua)
34
      , nexusMobile = /nexus\s*[0-6]\s*/i.test(ua)
35
      , nexusTablet = !nexusMobile && /nexus\s*[0-9]+/i.test(ua)
36
      , chromeos = /CrOS/.test(ua)
37
      , silk = /silk/i.test(ua)
38
      , sailfish = /sailfish/i.test(ua)
39
      , tizen = /tizen/i.test(ua)
40
      , webos = /(web|hpw)os/i.test(ua)
41
      , windowsphone = /windows phone/i.test(ua)
42
      , samsungBrowser = /SamsungBrowser/i.test(ua)
43
      , windows = !windowsphone && /windows/i.test(ua)
44
      , mac = !iosdevice && !silk && /macintosh/i.test(ua)
45
      , linux = !android && !sailfish && !tizen && !webos && /linux/i.test(ua)
46
      , edgeVersion = getFirstMatch(/edge\/(\d+(\.\d+)?)/i)
47
      , versionIdentifier = getFirstMatch(/version\/(\d+(\.\d+)?)/i)
48
      , tablet = /tablet/i.test(ua)
49
      , mobile = !tablet && /[^-]mobi/i.test(ua)
50
      , xbox = /xbox/i.test(ua)
51
      , result
52
53
    if (/opera/i.test(ua)) {
54
      //  an old Opera
55
      result = {
56
        name: 'Opera'
57
      , opera: t
58
      , version: versionIdentifier || getFirstMatch(/(?:opera|opr|opios)[\s\/](\d+(\.\d+)?)/i)
59
      }
60
    } else if (/opr|opios/i.test(ua)) {
61
      // a new Opera
62
      result = {
63
        name: 'Opera'
64
        , opera: t
65
        , version: getFirstMatch(/(?:opr|opios)[\s\/](\d+(\.\d+)?)/i) || versionIdentifier
66
      }
67
    }
68
    else if (/SamsungBrowser/i.test(ua)) {
69
      result = {
70
        name: 'Samsung Internet for Android'
71
        , samsungBrowser: t
72
        , version: versionIdentifier || getFirstMatch(/(?:SamsungBrowser)[\s\/](\d+(\.\d+)?)/i)
73
      }
74
    }
75
    else if (/coast/i.test(ua)) {
76
      result = {
77
        name: 'Opera Coast'
78
        , coast: t
79
        , version: versionIdentifier || getFirstMatch(/(?:coast)[\s\/](\d+(\.\d+)?)/i)
80
      }
81
    }
82
    else if (/yabrowser/i.test(ua)) {
83
      result = {
84
        name: 'Yandex Browser'
85
      , yandexbrowser: t
86
      , version: versionIdentifier || getFirstMatch(/(?:yabrowser)[\s\/](\d+(\.\d+)?)/i)
87
      }
88
    }
89
    else if (/ucbrowser/i.test(ua)) {
90
      result = {
91
          name: 'UC Browser'
92
        , ucbrowser: t
93
        , version: getFirstMatch(/(?:ucbrowser)[\s\/](\d+(?:\.\d+)+)/i)
94
      }
95
    }
96
    else if (/mxios/i.test(ua)) {
97
      result = {
98
        name: 'Maxthon'
99
        , maxthon: t
100
        , version: getFirstMatch(/(?:mxios)[\s\/](\d+(?:\.\d+)+)/i)
101
      }
102
    }
103
    else if (/epiphany/i.test(ua)) {
104
      result = {
105
        name: 'Epiphany'
106
        , epiphany: t
107
        , version: getFirstMatch(/(?:epiphany)[\s\/](\d+(?:\.\d+)+)/i)
108
      }
109
    }
110
    else if (/puffin/i.test(ua)) {
111
      result = {
112
        name: 'Puffin'
113
        , puffin: t
114
        , version: getFirstMatch(/(?:puffin)[\s\/](\d+(?:\.\d+)?)/i)
115
      }
116
    }
117
    else if (/sleipnir/i.test(ua)) {
118
      result = {
119
        name: 'Sleipnir'
120
        , sleipnir: t
121
        , version: getFirstMatch(/(?:sleipnir)[\s\/](\d+(?:\.\d+)+)/i)
122
      }
123
    }
124
    else if (/k-meleon/i.test(ua)) {
125
      result = {
126
        name: 'K-Meleon'
127
        , kMeleon: t
128
        , version: getFirstMatch(/(?:k-meleon)[\s\/](\d+(?:\.\d+)+)/i)
129
      }
130
    }
131
    else if (windowsphone) {
132
      result = {
133
        name: 'Windows Phone'
134
      , windowsphone: t
135
      }
136
      if (edgeVersion) {
137
        result.msedge = t
138
        result.version = edgeVersion
139
      }
140
      else {
141
        result.msie = t
142
        result.version = getFirstMatch(/iemobile\/(\d+(\.\d+)?)/i)
143
      }
144
    }
145
    else if (/msie|trident/i.test(ua)) {
146
      result = {
147
        name: 'Internet Explorer'
148
      , msie: t
149
      , version: getFirstMatch(/(?:msie |rv:)(\d+(\.\d+)?)/i)
150
      }
151
    } else if (chromeos) {
152
      result = {
153
        name: 'Chrome'
154
      , chromeos: t
155
      , chromeBook: t
156
      , chrome: t
157
      , version: getFirstMatch(/(?:chrome|crios|crmo)\/(\d+(\.\d+)?)/i)
158
      }
159
    } else if (/chrome.+? edge/i.test(ua)) {
160
      result = {
161
        name: 'Microsoft Edge'
162
      , msedge: t
163
      , version: edgeVersion
164
      }
165
    }
166
    else if (/vivaldi/i.test(ua)) {
167
      result = {
168
        name: 'Vivaldi'
169
        , vivaldi: t
170
        , version: getFirstMatch(/vivaldi\/(\d+(\.\d+)?)/i) || versionIdentifier
171
      }
172
    }
173
    else if (sailfish) {
174
      result = {
175
        name: 'Sailfish'
176
      , sailfish: t
177
      , version: getFirstMatch(/sailfish\s?browser\/(\d+(\.\d+)?)/i)
178
      }
179
    }
180
    else if (/seamonkey\//i.test(ua)) {
181
      result = {
182
        name: 'SeaMonkey'
183
      , seamonkey: t
184
      , version: getFirstMatch(/seamonkey\/(\d+(\.\d+)?)/i)
185
      }
186
    }
187
    else if (/firefox|iceweasel|fxios/i.test(ua)) {
188
      result = {
189
        name: 'Firefox'
190
      , firefox: t
191
      , version: getFirstMatch(/(?:firefox|iceweasel|fxios)[ \/](\d+(\.\d+)?)/i)
192
      }
193
      if (/\((mobile|tablet);[^\)]*rv:[\d\.]+\)/i.test(ua)) {
194
        result.firefoxos = t
195
      }
196
    }
197
    else if (silk) {
198
      result =  {
199
        name: 'Amazon Silk'
200
      , silk: t
201
      , version : getFirstMatch(/silk\/(\d+(\.\d+)?)/i)
202
      }
203
    }
204
    else if (/phantom/i.test(ua)) {
205
      result = {
206
        name: 'PhantomJS'
207
      , phantom: t
208
      , version: getFirstMatch(/phantomjs\/(\d+(\.\d+)?)/i)
209
      }
210
    }
211
    else if (/slimerjs/i.test(ua)) {
212
      result = {
213
        name: 'SlimerJS'
214
        , slimer: t
215
        , version: getFirstMatch(/slimerjs\/(\d+(\.\d+)?)/i)
216
      }
217
    }
218
    else if (/blackberry|\bbb\d+/i.test(ua) || /rim\stablet/i.test(ua)) {
219
      result = {
220
        name: 'BlackBerry'
221
      , blackberry: t
222
      , version: versionIdentifier || getFirstMatch(/blackberry[\d]+\/(\d+(\.\d+)?)/i)
223
      }
224
    }
225
    else if (webos) {
226
      result = {
227
        name: 'WebOS'
228
      , webos: t
229
      , version: versionIdentifier || getFirstMatch(/w(?:eb)?osbrowser\/(\d+(\.\d+)?)/i)
230
      };
231
      /touchpad\//i.test(ua) && (result.touchpad = t)
232
    }
233
    else if (/bada/i.test(ua)) {
234
      result = {
235
        name: 'Bada'
236
      , bada: t
237
      , version: getFirstMatch(/dolfin\/(\d+(\.\d+)?)/i)
238
      };
239
    }
240
    else if (tizen) {
241
      result = {
242
        name: 'Tizen'
243
      , tizen: t
244
      , version: getFirstMatch(/(?:tizen\s?)?browser\/(\d+(\.\d+)?)/i) || versionIdentifier
245
      };
246
    }
247
    else if (/qupzilla/i.test(ua)) {
248
      result = {
249
        name: 'QupZilla'
250
        , qupzilla: t
251
        , version: getFirstMatch(/(?:qupzilla)[\s\/](\d+(?:\.\d+)+)/i) || versionIdentifier
252
      }
253
    }
254
    else if (/chromium/i.test(ua)) {
255
      result = {
256
        name: 'Chromium'
257
        , chromium: t
258
        , version: getFirstMatch(/(?:chromium)[\s\/](\d+(?:\.\d+)?)/i) || versionIdentifier
259
      }
260
    }
261
    else if (/chrome|crios|crmo/i.test(ua)) {
262
      result = {
263
        name: 'Chrome'
264
        , chrome: t
265
        , version: getFirstMatch(/(?:chrome|crios|crmo)\/(\d+(\.\d+)?)/i)
266
      }
267
    }
268
    else if (android) {
269
      result = {
270
        name: 'Android'
271
        , version: versionIdentifier
272
      }
273
    }
274
    else if (/safari|applewebkit/i.test(ua)) {
275
      result = {
276
        name: 'Safari'
277
      , safari: t
278
      }
279
      if (versionIdentifier) {
280
        result.version = versionIdentifier
281
      }
282
    }
283
    else if (iosdevice) {
284
      result = {
285
        name : iosdevice == 'iphone' ? 'iPhone' : iosdevice == 'ipad' ? 'iPad' : 'iPod'
286
      }
287
      // WTF: version is not part of user agent in web apps
288
      if (versionIdentifier) {
289
        result.version = versionIdentifier
290
      }
291
    }
292
    else if(/googlebot/i.test(ua)) {
293
      result = {
294
        name: 'Googlebot'
295
      , googlebot: t
296
      , version: getFirstMatch(/googlebot\/(\d+(\.\d+))/i) || versionIdentifier
297
      }
298
    }
299
    else {
300
      result = {
301
        name: getFirstMatch(/^(.*)\/(.*) /),
302
        version: getSecondMatch(/^(.*)\/(.*) /)
303
     };
304
   }
305
306
    // set webkit or gecko flag for browsers based on these engines
307
    if (!result.msedge && /(apple)?webkit/i.test(ua)) {
308
      if (/(apple)?webkit\/537\.36/i.test(ua)) {
309
        result.name = result.name || "Blink"
310
        result.blink = t
311
      } else {
312
        result.name = result.name || "Webkit"
313
        result.webkit = t
314
      }
315
      if (!result.version && versionIdentifier) {
316
        result.version = versionIdentifier
317
      }
318
    } else if (!result.opera && /gecko\//i.test(ua)) {
319
      result.name = result.name || "Gecko"
320
      result.gecko = t
321
      result.version = result.version || getFirstMatch(/gecko\/(\d+(\.\d+)?)/i)
322
    }
323
324
    // set OS flags for platforms that have multiple browsers
325
    if (!result.windowsphone && !result.msedge && (android || result.silk)) {
326
      result.android = t
327
    } else if (!result.windowsphone && !result.msedge && iosdevice) {
328
      result[iosdevice] = t
329
      result.ios = t
330
    } else if (mac) {
331
      result.mac = t
332
    } else if (xbox) {
333
      result.xbox = t
334
    } else if (windows) {
335
      result.windows = t
336
    } else if (linux) {
337
      result.linux = t
338
    }
339
340
    // OS version extraction
341
    var osVersion = '';
342
    if (result.windowsphone) {
343
      osVersion = getFirstMatch(/windows phone (?:os)?\s?(\d+(\.\d+)*)/i);
344
    } else if (iosdevice) {
345
      osVersion = getFirstMatch(/os (\d+([_\s]\d+)*) like mac os x/i);
346
      osVersion = osVersion.replace(/[_\s]/g, '.');
347
    } else if (android) {
348
      osVersion = getFirstMatch(/android[ \/-](\d+(\.\d+)*)/i);
349
    } else if (result.webos) {
350
      osVersion = getFirstMatch(/(?:web|hpw)os\/(\d+(\.\d+)*)/i);
351
    } else if (result.blackberry) {
352
      osVersion = getFirstMatch(/rim\stablet\sos\s(\d+(\.\d+)*)/i);
353
    } else if (result.bada) {
354
      osVersion = getFirstMatch(/bada\/(\d+(\.\d+)*)/i);
355
    } else if (result.tizen) {
356
      osVersion = getFirstMatch(/tizen[\/\s](\d+(\.\d+)*)/i);
357
    }
358
    if (osVersion) {
359
      result.osversion = osVersion;
360
    }
361
362
    // device type extraction
363
    var osMajorVersion = osVersion.split('.')[0];
364
    if (
365
         tablet
366
      || nexusTablet
367
      || iosdevice == 'ipad'
368
      || (android && (osMajorVersion == 3 || (osMajorVersion >= 4 && !mobile)))
369
      || result.silk
370
    ) {
371
      result.tablet = t
372
    } else if (
373
         mobile
374
      || iosdevice == 'iphone'
375
      || iosdevice == 'ipod'
376
      || android
377
      || nexusMobile
378
      || result.blackberry
379
      || result.webos
380
      || result.bada
381
    ) {
382
      result.mobile = t
383
    }
384
385
    // Graded Browser Support
386
    // http://developer.yahoo.com/yui/articles/gbs
387
    if (result.msedge ||
388
        (result.msie && result.version >= 10) ||
389
        (result.yandexbrowser && result.version >= 15) ||
390
		    (result.vivaldi && result.version >= 1.0) ||
391
        (result.chrome && result.version >= 20) ||
392
        (result.samsungBrowser && result.version >= 4) ||
393
        (result.firefox && result.version >= 20.0) ||
394
        (result.safari && result.version >= 6) ||
395
        (result.opera && result.version >= 10.0) ||
396
        (result.ios && result.osversion && result.osversion.split(".")[0] >= 6) ||
397
        (result.blackberry && result.version >= 10.1)
398
        || (result.chromium && result.version >= 20)
399
        ) {
400
      result.a = t;
401
    }
402
    else if ((result.msie && result.version < 10) ||
403
        (result.chrome && result.version < 20) ||
404
        (result.firefox && result.version < 20.0) ||
405
        (result.safari && result.version < 6) ||
406
        (result.opera && result.version < 10.0) ||
407
        (result.ios && result.osversion && result.osversion.split(".")[0] < 6)
408
        || (result.chromium && result.version < 20)
409
        ) {
410
      result.c = t
411
    } else result.x = t
412
413
    return result
414
  }
415
416
  var bowser = detect(typeof navigator !== 'undefined' ? navigator.userAgent || '' : '')
417
418
  bowser.test = function (browserList) {
419
    for (var i = 0; i < browserList.length; ++i) {
420
      var browserItem = browserList[i];
421
      if (typeof browserItem=== 'string') {
422
        if (browserItem in bowser) {
423
          return true;
424
        }
425
      }
426
    }
427
    return false;
428
  }
429
430
  /**
431
   * Get version precisions count
432
   *
433
   * @example
434
   *   getVersionPrecision("1.10.3") // 3
435
   *
436
   * @param  {string} version
437
   * @return {number}
438
   */
439
  function getVersionPrecision(version) {
440
    return version.split(".").length;
441
  }
442
443
  /**
444
   * Array::map polyfill
445
   *
446
   * @param  {Array} arr
447
   * @param  {Function} iterator
448
   * @return {Array}
449
   */
450
  function map(arr, iterator) {
451
    var result = [], i;
452
    if (Array.prototype.map) {
453
      return Array.prototype.map.call(arr, iterator);
454
    }
455
    for (i = 0; i < arr.length; i++) {
456
      result.push(iterator(arr[i]));
457
    }
458
    return result;
459
  }
460
461
  /**
462
   * Calculate browser version weight
463
   *
464
   * @example
465
   *   compareVersions(['1.10.2.1',  '1.8.2.1.90'])    // 1
466
   *   compareVersions(['1.010.2.1', '1.09.2.1.90']);  // 1
467
   *   compareVersions(['1.10.2.1',  '1.10.2.1']);     // 0
468
   *   compareVersions(['1.10.2.1',  '1.0800.2']);     // -1
469
   *
470
   * @param  {Array<String>} versions versions to compare
471
   * @return {Number} comparison result
472
   */
473
  function compareVersions(versions) {
474
    // 1) get common precision for both versions, for example for "10.0" and "9" it should be 2
475
    var precision = Math.max(getVersionPrecision(versions[0]), getVersionPrecision(versions[1]));
476
    var chunks = map(versions, function (version) {
477
      var delta = precision - getVersionPrecision(version);
478
479
      // 2) "9" -> "9.0" (for precision = 2)
480
      version = version + new Array(delta + 1).join(".0");
481
482
      // 3) "9.0" -> ["000000000"", "000000009"]
483
      return map(version.split("."), function (chunk) {
484
        return new Array(20 - chunk.length).join("0") + chunk;
485
      }).reverse();
486
    });
487
488
    // iterate in reverse order by reversed chunks array
489
    while (--precision >= 0) {
490
      // 4) compare: "000000009" > "000000010" = false (but "9" > "10" = true)
491
      if (chunks[0][precision] > chunks[1][precision]) {
492
        return 1;
493
      }
494
      else if (chunks[0][precision] === chunks[1][precision]) {
495
        if (precision === 0) {
496
          // all version chunks are same
497
          return 0;
498
        }
499
      }
500
      else {
501
        return -1;
502
      }
503
    }
504
  }
505
506
  /**
507
   * Check if browser is unsupported
508
   *
509
   * @example
510
   *   bowser.isUnsupportedBrowser({
511
   *     msie: "10",
512
   *     firefox: "23",
513
   *     chrome: "29",
514
   *     safari: "5.1",
515
   *     opera: "16",
516
   *     phantom: "534"
517
   *   });
518
   *
519
   * @param  {Object}  minVersions map of minimal version to browser
520
   * @param  {Boolean} [strictMode = false] flag to return false if browser wasn't found in map
521
   * @param  {String}  [ua] user agent string
522
   * @return {Boolean}
523
   */
524
  function isUnsupportedBrowser(minVersions, strictMode, ua) {
525
    var _bowser = bowser;
526
527
    // make strictMode param optional with ua param usage
528
    if (typeof strictMode === 'string') {
529
      ua = strictMode;
530
      strictMode = void(0);
531
    }
532
533
    if (strictMode === void(0)) {
534
      strictMode = false;
535
    }
536
    if (ua) {
537
      _bowser = detect(ua);
538
    }
539
540
    var version = "" + _bowser.version;
541
    for (var browser in minVersions) {
542
      if (minVersions.hasOwnProperty(browser)) {
543
        if (_bowser[browser]) {
544
          if (typeof minVersions[browser] !== 'string') {
545
            throw new Error('Browser version in the minVersion map should be a string: ' + browser + ': ' + String(minVersions));
546
          }
547
548
          // browser version and min supported version.
549
          return compareVersions([version, minVersions[browser]]) < 0;
550
        }
551
      }
552
    }
553
554
    return strictMode; // not found
555
  }
556
557
  /**
558
   * Check if browser is supported
559
   *
560
   * @param  {Object} minVersions map of minimal version to browser
561
   * @param  {Boolean} [strictMode = false] flag to return false if browser wasn't found in map
562
   * @param  {String}  [ua] user agent string
563
   * @return {Boolean}
564
   */
565
  function check(minVersions, strictMode, ua) {
566
    return !isUnsupportedBrowser(minVersions, strictMode, ua);
567
  }
568
569
  bowser.isUnsupportedBrowser = isUnsupportedBrowser;
570
  bowser.compareVersions = compareVersions;
571
  bowser.check = check;
572
573
  /*
574
   * Set our detect method to the main bowser object so we can
575
   * reuse it to test other user agents.
576
   * This is needed to implement future tests.
577
   */
578
  bowser._detect = detect;
579
580
  return bowser;
581
});
582