CrawlerDetect::getUaHttpHeaders() - Code Metrics - Inspection of "Add 'BingPreview'" - JayBizzle/Crawler-Detect - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#49)

unknown

created 2016-01-11 12:46 UTC

CrawlerDetect::getUaHttpHeaders() A

↳ Parent: Project

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
c	2
b	0
f	0
dl	0
loc	4
rs	10
cc	1
eloc	2
nc	1
nop	0

<?php

namespace Jaybizzle\CrawlerDetect;

class CrawlerDetect
{
    /**
     * The user agent.
     * 
     * @var null
     */
    protected $userAgent = null;

    /**
     * Headers that container user agent.
     * 
     * @var array
     */
    protected $httpHeaders = array();

    /**
     * Store regex matches.
     * 
     * @var array
     */
    protected $matches = array();

    /**
     * List of strings to remove from the user agent before running the crawler regex
     * Over a large list of user agents, this gives us about a 55% speed increase!
     * 
     * @var array
     */
    protected static $ignore = array(
        'Safari.[\d\.]*',
        'Firefox.[\d\.]*',
        'Chrome.[\d\.]*',
        'Chromium.[\d\.]*',
        'MSIE.[\d\.]',
        'Opera\/[\d\.]*',
        'Mozilla.[\d\.]*',
        'AppleWebKit.[\d\.]*',
        'Trident.[\d\.]*',
        'Windows NT.[\d\.]*',
        'Android.[\d\.]*',
        'Macintosh.',
        'Ubuntu',
        'Linux',
        'Intel',
        'Mac OS X',
        'Gecko.[\d\.]*',
        'KHTML',
        'CriOS.[\d\.]*',
        'CPU iPhone OS ([0-9_])* like Mac OS X',
        'CPU OS ([0-9_])* like Mac OS X',
        'iPod',
        'like Gecko',
        'compatible',
        'x86_..',
        'i686',
        'x64',
        'X11',
        'rv:[\d\.]*',
        'Version.[\d\.]*',
        'WOW64',
        'Win64',
        'Dalvik.[\d\.]*',
        '\.NET CLR [\d\.]*',
        'Presto.[\d\.]*',
        'Media Center PC',
    );

    /**
     * Array of regular expressions to match against the user agent.
     * 
     * @var array
     */
    protected static $crawlers = array(
        '008\\/',
        'A6-Indexer',
        'Aboundex',
        'Accoona-AI-Agent',
        'acoon',
        'AddThis',
        'ADmantX',
        'AHC',
        'Airmail',
        'Anemone',
        'Arachmo',
        'archive-com',
        'B-l-i-t-z-B-O-T',
        'bibnum\.bnf',
        'biglotron',
        'binlar',
        'BingPreview'
        'boitho\.com-dc',

        'BUbiNG',
        'Butterfly\\/',
        'BuzzSumo',
        'CC Metadata Scaper',
        'Cerberian Drtrs',
        'changedetection',
        'Charlotte',
        'clips\.ua\.ac\.be',
        'CloudFlare-AlwaysOnline',
        'coccoc',
        'Commons-HttpClient',
        'convera',
        'cosmos',
        'Covario-IDS',
        'curl',
        'CyberPatrol',
        'DataparkSearch',
        'dataprovider',
        'Digg',
        'DomainAppender',
        'drupact',
        'EARTHCOM',
        'ec2linkfinder',
        'ElectricMonk',
        'Embedly',
        'europarchive\.org',
        'EventMachine HttpClient',
        'ezooms',
        'eZ Publish Link Validator',
        'facebookexternalhit',
        'Feedfetcher-Google',
        'FeedValidator',
        'FindLinks',
        'findlink',
        'findthatfile',
        'Flamingo_SearchEngine',
        'fluffy',
        'getprismatic\.com',
        'g00g1e\.net',
        'GigablastOpenSource',
        'grub-client',
        'Genieo',
        'Go-http-client',
        'Google-HTTP-Java-Client',
        'Google favicon',
        'Google Keyword Suggestion',
        'heritrix',
        'Holmes',
        'htdig',
        'httpunit',
        'httrack',
        'ichiro',
        'igdeSpyder',
        'InAGist',
        'InfoWizards Reciprocal Link System PRO',
        'integromedb',
        'IODC',
        'IOI',
        'ips-agent',
        'iZSearch',
        'L\.webis',
        'Larbin',
        'libwww',
        'Link Valet',
        'linkdex',
        'LinkExaminer',
        'LinkWalker',
        'Lipperhey Link Explorer',
        'Lipperhey SEO Service',
        'LongURL API',
        'ltx71',
        'lwp-trivial',
        'MegaIndex\.ru',
        'mabontland',
        'MagpieRSS',
        'Mediapartners-Google',
        'MetaURI',
        'Mnogosearch',
        'mogimogi',
        'Morning Paper',
        'Mrcgiguy',
        'MVAClient',
        'netresearchserver',
        'NewsGator',
        'newsme',
        'NG-Search',
        '^NING\\/',
        'Notifixious',
        'nutch',
        'NutchCVS',
        'Nymesis',
        'oegp',
        'online link validator',
        'Online Website Link Checker',
        'Orbiter',
        'ow\.ly',
        'Ploetz \+ Zeller',
        'page2rss',
        'panscient',
        'Peew',
        'phpcrawl',
        'Pizilla',
        'Plukkie',
        'Pompos',
        'postano',
        'PostPost',
        'postrank',
        'proximic',
        'PycURL',
        'Python-httplib2',
        'python-requests',
        'Python-urllib',
        'Qseero',
        'Qwantify',
        'Radian6',
        'RebelMouse',
        'REL Link Checker',
        'RetrevoPageAnalyzer',
        'Riddler',
        'Robosourcer',
        'Ruby',
        'SBIder',
        'ScoutJet',
        'ScoutURLMonitor',
        'Scrapy',
        'Scrubby',
        'SearchSight',
        'semanticdiscovery',
        'SEOstats',
        'Seznam screenshot-generator',
        'ShopWiki',
        'SiteBar',
        'siteexplorer\.info',
        'slider\.com',
        'slurp',
        'Snappy',
        'sogou',
        'speedy',
        'Sqworm',
        'StackRambler',
        'Stratagems Kumo',
        'summify',
        'teoma',
        'theoldreader\.com',
        'TinEye',
        'Traackr.com',
        'truwoGPS',
        'tweetedtimes\.com',
        'Twikle',
        'UnwindFetchor',
        'updated',
        'urlresolver',
        'Validator\.nu\\/LV',
        'Vagabondo',
        'Vivante Link Checker',
        'Vortex',
        'voyager\\/',
        'VYU2',
        'W3C-checklink',
        'W3C_CSS_Validator_JFouffa',
        'W3C_I18n-Checker',
        'W3C-mobileOK',
        'W3C_Unicorn',
        'W3C_Validator',
        'WebIndex',
        'Websquash\.com',
        'webcollage',
        'webmon ',
        'WeSEE:Search',
        'wf84',
        'wget',
        'WomlpeFactory',
        'wotbox',
        'Xenu Link Sleuth',
        'XML Sitemaps Generator',
        'Y!J-ASR',
        'yacy',
        'Yahoo Link Preview',
        'Yahoo! Slurp China',
        'Yahoo! Slurp',
        'YahooSeeker',
        'YahooSeeker-Testing',
        'YandexImages',
        'YandexMetrika',
        'yandex',
        'yanga',
        'yeti',
        'yoogliFetchAgent',
        'Zao',
        'ZyBorg',
        '[a-z0-9\\-_]*((?<!cu)bot|crawler|archiver|transcoder|spider)',
    );

    /**
     * All possible HTTP headers that represent the
     * User-Agent string.
     *
     * @var array
     */
    protected static $uaHttpHeaders = array(
        // The default User-Agent string.
        'HTTP_USER_AGENT',
        // Header can occur on devices using Opera Mini.
        'HTTP_X_OPERAMINI_PHONE_UA',
        // Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/

        'HTTP_X_DEVICE_USER_AGENT',
        'HTTP_X_ORIGINAL_USER_AGENT',
        'HTTP_X_SKYFIRE_PHONE',
        'HTTP_X_BOLT_PHONE_UA',
        'HTTP_DEVICE_STOCK_UA',
        'HTTP_X_UCBROWSER_DEVICE_UA',
    );

    /**
     * Class constructor.
     */
    public function __construct(array $headers = null, $userAgent = null)
    {
        $this->setHttpHeaders($headers);
        $this->setUserAgent($userAgent);
    }

    /**
     * Set HTTP headers.
     * 
     * @param array $httpHeaders
     */
    public function setHttpHeaders($httpHeaders = null)
// Bad
class Router
{
    public function generate($path)
    {
        return $_SERVER['HOST'].$path;
    }
}

// Better
class Router
{
    private $host;

    public function __construct($host)
    {
        $this->host = $host;
    }

    public function generate($path)
    {
        return $this->host.$path;
    }
}

class Controller
{
    public function myAction(Request $request)
    {
        // Instead of
        $page = isset($_GET['page']) ? intval($_GET['page']) : 1;

        // Better (assuming you use the Symfony2 request)
        $page = $request->query->get('page', 1);
    }
}
    {
        // use global _SERVER if $httpHeaders aren't defined
        if (!is_array($httpHeaders) || !count($httpHeaders)) {
            $httpHeaders = $_SERVER;
        }
        // clear existing headers
        $this->httpHeaders = array();
        // Only save HTTP headers. In PHP land, that means only _SERVER vars that
        // start with HTTP_.
        foreach ($httpHeaders as $key => $value) {
            if (substr($key, 0, 5) === 'HTTP_') {
                $this->httpHeaders[$key] = $value;
            }
        }
    }

    /**
     * Return user agent headers.
     * 
     * @return array
     */
    public function getUaHttpHeaders()
    {
        return self::$uaHttpHeaders;
    }

    /**
     * Set the user agent.
     * 
     * @param string $userAgent
     */
    public function setUserAgent($userAgent = null)
    {
        if (false === empty($userAgent)) {
            return $this->userAgent = $userAgent;
        } else {
            $this->userAgent = null;
            foreach ($this->getUaHttpHeaders() as $altHeader) {
                if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow.
                    $this->userAgent .= $this->httpHeaders[$altHeader].' ';
                }
            }

            return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
        }
    }

    /**
     * Build the user agent regex.
     * 
     * @return string
     */
    public function getRegex()
    {
        return '('.implode('|', self::$crawlers).')';
    }

    /**
     * Build the replacement regex.
     * 
     * @return string
     */
    public function getIgnored()
    {
        return '('.implode('|', self::$ignore).')';
    }

    /**
     * Check user aganet string against the regex.
     * 
     * @param string $userAgent
     *
     * @return bool
     */
    public function isCrawler($userAgent = null)
    {
        $agent = is_null($userAgent) ? $this->userAgent : $userAgent;

        $agent = preg_replace('/'.$this->getIgnored().'/i', '', $agent);

        $result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);

        if ($matches) {
            $this->matches = $matches;
        }

        return (bool) $result;
    }

    /**
     * Return the matches.
     * 
     * @return array
     */
    public function getMatches()
    {
        return $this->matches[0];
    }
}


1			<?php
2
3			namespace Jaybizzle\CrawlerDetect;
4
5			class CrawlerDetect
6			{
7			/**
8			* The user agent.
9			*
10			* @var null
11			*/
12			protected $userAgent = null;
13
14			/**
15			* Headers that container user agent.
16			*
17			* @var array
18			*/
19			protected $httpHeaders = array();
20
21			/**
22			* Store regex matches.
23			*
24			* @var array
25			*/
26			protected $matches = array();
27
28			/**
29			* List of strings to remove from the user agent before running the crawler regex
30			* Over a large list of user agents, this gives us about a 55% speed increase!
31			*
32			* @var array
33			*/
34			protected static $ignore = array(
35			'Safari.[\d\.]*',
36			'Firefox.[\d\.]*',
37			'Chrome.[\d\.]*',
38			'Chromium.[\d\.]*',
39			'MSIE.[\d\.]',
40			'Opera\/[\d\.]*',
41			'Mozilla.[\d\.]*',
42			'AppleWebKit.[\d\.]*',
43			'Trident.[\d\.]*',
44			'Windows NT.[\d\.]*',
45			'Android.[\d\.]*',
46			'Macintosh.',
47			'Ubuntu',
48			'Linux',
49			'Intel',
50			'Mac OS X',
51			'Gecko.[\d\.]*',
52			'KHTML',
53			'CriOS.[\d\.]*',
54			'CPU iPhone OS ([0-9_])* like Mac OS X',
55			'CPU OS ([0-9_])* like Mac OS X',
56			'iPod',
57			'like Gecko',
58			'compatible',
59			'x86_..',
60			'i686',
61			'x64',
62			'X11',
63			'rv:[\d\.]*',
64			'Version.[\d\.]*',
65			'WOW64',
66			'Win64',
67			'Dalvik.[\d\.]*',
68			'\.NET CLR [\d\.]*',
69			'Presto.[\d\.]*',
70			'Media Center PC',
71			);
72
73			/**
74			* Array of regular expressions to match against the user agent.
75			*
76			* @var array
77			*/
78			protected static $crawlers = array(
79			'008\\/',
80			'A6-Indexer',
81			'Aboundex',
82			'Accoona-AI-Agent',
83			'acoon',
84			'AddThis',
85			'ADmantX',
86			'AHC',
87			'Airmail',
88			'Anemone',
89			'Arachmo',
90			'archive-com',
91			'B-l-i-t-z-B-O-T',
92			'bibnum\.bnf',
93			'biglotron',
94			'binlar',
95			'BingPreview'
96			'boitho\.com-dc',
			0 ignored issues – show Bug introduced 2016-01-11 12:50 UTC by Report Bug Copy Issue Report This code did not parse for me. Apparently, there is an error somewhere around this line: Syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ')' Loading history...
97			'BUbiNG',
98			'Butterfly\\/',
99			'BuzzSumo',
100			'CC Metadata Scaper',
101			'Cerberian Drtrs',
102			'changedetection',
103			'Charlotte',
104			'clips\.ua\.ac\.be',
105			'CloudFlare-AlwaysOnline',
106			'coccoc',
107			'Commons-HttpClient',
108			'convera',
109			'cosmos',
110			'Covario-IDS',
111			'curl',
112			'CyberPatrol',
113			'DataparkSearch',
114			'dataprovider',
115			'Digg',
116			'DomainAppender',
117			'drupact',
118			'EARTHCOM',
119			'ec2linkfinder',
120			'ElectricMonk',
121			'Embedly',
122			'europarchive\.org',
123			'EventMachine HttpClient',
124			'ezooms',
125			'eZ Publish Link Validator',
126			'facebookexternalhit',
127			'Feedfetcher-Google',
128			'FeedValidator',
129			'FindLinks',
130			'findlink',
131			'findthatfile',
132			'Flamingo_SearchEngine',
133			'fluffy',
134			'getprismatic\.com',
135			'g00g1e\.net',
136			'GigablastOpenSource',
137			'grub-client',
138			'Genieo',
139			'Go-http-client',
140			'Google-HTTP-Java-Client',
141			'Google favicon',
142			'Google Keyword Suggestion',
143			'heritrix',
144			'Holmes',
145			'htdig',
146			'httpunit',
147			'httrack',
148			'ichiro',
149			'igdeSpyder',
150			'InAGist',
151			'InfoWizards Reciprocal Link System PRO',
152			'integromedb',
153			'IODC',
154			'IOI',
155			'ips-agent',
156			'iZSearch',
157			'L\.webis',
158			'Larbin',
159			'libwww',
160			'Link Valet',
161			'linkdex',
162			'LinkExaminer',
163			'LinkWalker',
164			'Lipperhey Link Explorer',
165			'Lipperhey SEO Service',
166			'LongURL API',
167			'ltx71',
168			'lwp-trivial',
169			'MegaIndex\.ru',
170			'mabontland',
171			'MagpieRSS',
172			'Mediapartners-Google',
173			'MetaURI',
174			'Mnogosearch',
175			'mogimogi',
176			'Morning Paper',
177			'Mrcgiguy',
178			'MVAClient',
179			'netresearchserver',
180			'NewsGator',
181			'newsme',
182			'NG-Search',
183			'^NING\\/',
184			'Notifixious',
185			'nutch',
186			'NutchCVS',
187			'Nymesis',
188			'oegp',
189			'online link validator',
190			'Online Website Link Checker',
191			'Orbiter',
192			'ow\.ly',
193			'Ploetz \+ Zeller',
194			'page2rss',
195			'panscient',
196			'Peew',
197			'phpcrawl',
198			'Pizilla',
199			'Plukkie',
200			'Pompos',
201			'postano',
202			'PostPost',
203			'postrank',
204			'proximic',
205			'PycURL',
206			'Python-httplib2',
207			'python-requests',
208			'Python-urllib',
209			'Qseero',
210			'Qwantify',
211			'Radian6',
212			'RebelMouse',
213			'REL Link Checker',
214			'RetrevoPageAnalyzer',
215			'Riddler',
216			'Robosourcer',
217			'Ruby',
218			'SBIder',
219			'ScoutJet',
220			'ScoutURLMonitor',
221			'Scrapy',
222			'Scrubby',
223			'SearchSight',
224			'semanticdiscovery',
225			'SEOstats',
226			'Seznam screenshot-generator',
227			'ShopWiki',
228			'SiteBar',
229			'siteexplorer\.info',
230			'slider\.com',
231			'slurp',
232			'Snappy',
233			'sogou',
234			'speedy',
235			'Sqworm',
236			'StackRambler',
237			'Stratagems Kumo',
238			'summify',
239			'teoma',
240			'theoldreader\.com',
241			'TinEye',
242			'Traackr.com',
243			'truwoGPS',
244			'tweetedtimes\.com',
245			'Twikle',
246			'UnwindFetchor',
247			'updated',
248			'urlresolver',
249			'Validator\.nu\\/LV',
250			'Vagabondo',
251			'Vivante Link Checker',
252			'Vortex',
253			'voyager\\/',
254			'VYU2',
255			'W3C-checklink',
256			'W3C_CSS_Validator_JFouffa',
257			'W3C_I18n-Checker',
258			'W3C-mobileOK',
259			'W3C_Unicorn',
260			'W3C_Validator',
261			'WebIndex',
262			'Websquash\.com',
263			'webcollage',
264			'webmon ',
265			'WeSEE:Search',
266			'wf84',
267			'wget',
268			'WomlpeFactory',
269			'wotbox',
270			'Xenu Link Sleuth',
271			'XML Sitemaps Generator',
272			'Y!J-ASR',
273			'yacy',
274			'Yahoo Link Preview',
275			'Yahoo! Slurp China',
276			'Yahoo! Slurp',
277			'YahooSeeker',
278			'YahooSeeker-Testing',
279			'YandexImages',
280			'YandexMetrika',
281			'yandex',
282			'yanga',
283			'yeti',
284			'yoogliFetchAgent',
285			'Zao',
286			'ZyBorg',
287			'[a-z0-9\\-_]*((?<!cu)bot\|crawler\|archiver\|transcoder\|spider)',
288			);
289
290			/**
291			* All possible HTTP headers that represent the
292			* User-Agent string.
293			*
294			* @var array
295			*/
296			protected static $uaHttpHeaders = array(
297			// The default User-Agent string.
298			'HTTP_USER_AGENT',
299			// Header can occur on devices using Opera Mini.
300			'HTTP_X_OPERAMINI_PHONE_UA',
301			// Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/
			0 ignored issues – show Unused Code Comprehensibility introduced 2015-11-25 13:32 UTC by Report Bug Copy Issue Report `38%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
302			'HTTP_X_DEVICE_USER_AGENT',
303			'HTTP_X_ORIGINAL_USER_AGENT',
304			'HTTP_X_SKYFIRE_PHONE',
305			'HTTP_X_BOLT_PHONE_UA',
306			'HTTP_DEVICE_STOCK_UA',
307			'HTTP_X_UCBROWSER_DEVICE_UA',
308			);
309
310			/**
311			* Class constructor.
312			*/
313			public function __construct(array $headers = null, $userAgent = null)
314			{
315			$this->setHttpHeaders($headers);
316			$this->setUserAgent($userAgent);
317			}
318
319			/**
320			* Set HTTP headers.
321			*
322			* @param array $httpHeaders
323			*/
324			public function setHttpHeaders($httpHeaders = null)
			0 ignored issues – show Coding Style introduced 2015-11-25 13:32 UTC by Report Bug Copy Issue Report `setHttpHeaders` uses the super-global variable `$_SERVER` which is generally not recommended. Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad class Router { public function generate($path) { return $_SERVER['HOST'].$path; } } // Better class Router { private $host; public function __construct($host) { $this->host = $host; } public function generate($path) { return $this->host.$path; } } class Controller { public function myAction(Request $request) { // Instead of $page = isset($_GET['page']) ? intval($_GET['page']) : 1; // Better (assuming you use the Symfony2 request) $page = $request->query->get('page', 1); } } Loading history...
325			{
326			// use global _SERVER if $httpHeaders aren't defined
327			if (!is_array($httpHeaders) \|\| !count($httpHeaders)) {
328			$httpHeaders = $_SERVER;
329			}
330			// clear existing headers
331			$this->httpHeaders = array();
332			// Only save HTTP headers. In PHP land, that means only _SERVER vars that
333			// start with HTTP_.
334			foreach ($httpHeaders as $key => $value) {
335			if (substr($key, 0, 5) === 'HTTP_') {
336			$this->httpHeaders[$key] = $value;
337			}
338			}
339			}
340
341			/**
342			* Return user agent headers.
343			*
344			* @return array
345			*/
346			public function getUaHttpHeaders()
347			{
348			return self::$uaHttpHeaders;
349			}
350
351			/**
352			* Set the user agent.
353			*
354			* @param string $userAgent
355			*/
356			public function setUserAgent($userAgent = null)
357			{
358			if (false === empty($userAgent)) {
359			return $this->userAgent = $userAgent;
360			} else {
361			$this->userAgent = null;
362			foreach ($this->getUaHttpHeaders() as $altHeader) {
363			if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow.
364			$this->userAgent .= $this->httpHeaders[$altHeader].' ';
365			}
366			}
367
368			return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
369			}
370			}
371
372			/**
373			* Build the user agent regex.
374			*
375			* @return string
376			*/
377			public function getRegex()
378			{
379			return '('.implode('\|', self::$crawlers).')';
380			}
381
382			/**
383			* Build the replacement regex.
384			*
385			* @return string
386			*/
387			public function getIgnored()
388			{
389			return '('.implode('\|', self::$ignore).')';
390			}
391
392			/**
393			* Check user aganet string against the regex.
394			*
395			* @param string $userAgent
396			*
397			* @return bool
398			*/
399			public function isCrawler($userAgent = null)
400			{
401			$agent = is_null($userAgent) ? $this->userAgent : $userAgent;
402
403			$agent = preg_replace('/'.$this->getIgnored().'/i', '', $agent);
404
405			$result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);
406
407			if ($matches) {
408			$this->matches = $matches;
409			}
410
411			return (bool) $result;
412			}
413
414			/**
415			* Return the matches.
416			*
417			* @return array
418			*/
419			public function getMatches()
420			{
421			return $this->matches[0];
422			}
423			}
424

JayBizzle / Crawler-Detect

Pull Request — master (#49)

CrawlerDetect::getUaHttpHeaders() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like