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initial commit of new asset pipeline work + user agent handling
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Andy Miller
321
vendor/ornicar/php-user-agent/lib/phpUserAgentStringParser.php
vendored
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321
vendor/ornicar/php-user-agent/lib/phpUserAgentStringParser.php
vendored
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<?php
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/**
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* Simple PHP User Agent string parser
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*/
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class phpUserAgentStringParser
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{
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/**
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* Parse a user agent string.
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*
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* @param string $userAgentString defaults to $_SERVER['HTTP_USER_AGENT'] if empty
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* @return array ( the user agent informations
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* 'browser_name' => 'firefox',
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* 'browser_version' => '3.6',
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* 'operating_system' => 'linux'
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* )
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*/
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public function parse($userAgentString = null)
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{
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// use current user agent string as default
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if(!$userAgentString)
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{
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$userAgentString = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : null;
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}
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// parse quickly (with medium accuracy)
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$informations = $this->doParse($userAgentString);
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// run some filters to increase accuracy
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foreach($this->getFilters() as $filter)
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{
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$this->$filter($informations);
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}
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return $informations;
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}
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/**
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* Detect quickly informations from the user agent string
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*
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* @param string $userAgentString user agent string
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* @return array user agent informations array
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*/
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protected function doParse($userAgentString)
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{
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$userAgent = array(
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'string' => $this->cleanUserAgentString($userAgentString),
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'browser_name' => null,
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'browser_version' => null,
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'operating_system' => null,
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'engine' => null
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);
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if(empty($userAgent['string']))
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{
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return $userAgent;
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}
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// build regex that matches phrases for known browsers
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// (e.g. "Firefox/2.0" or "MSIE 6.0" (This only matches the major and minor
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// version numbers. E.g. "2.0.0.6" is parsed as simply "2.0"
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$pattern = '#('.join('|', $this->getKnownBrowsers()).')[/ ]+([0-9]+(?:\.[0-9]+)?)#';
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// Find all phrases (or return empty array if none found)
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if (preg_match_all($pattern, $userAgent['string'], $matches))
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{
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// Since some UAs have more than one phrase (e.g Firefox has a Gecko phrase,
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// Opera 7,8 have a MSIE phrase), use the last one found (the right-most one
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// in the UA). That's usually the most correct.
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$i = count($matches[1])-1;
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if (isset($matches[1][$i]))
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{
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$userAgent['browser_name'] = $matches[1][$i];
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}
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if (isset($matches[2][$i]))
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{
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$userAgent['browser_version'] = $matches[2][$i];
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}
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}
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// Find operating system
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$pattern = '#'.join('|', $this->getKnownOperatingSystems()).'#';
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if (preg_match($pattern, $userAgent['string'], $match))
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{
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if (isset($match[0]))
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{
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$userAgent['operating_system'] = $match[0];
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}
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}
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// Find engine
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$pattern = '#'.join('|', $this->getKnownEngines()).'#';
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if (preg_match($pattern, $userAgent['string'], $match))
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{
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if (isset($match[0]))
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{
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$userAgent['engine'] = $match[0];
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}
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}
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return $userAgent;
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}
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/**
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* Make user agent string lowercase, and replace browser aliases
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*
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* @param string $userAgentString the dirty user agent string
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* @return string the clean user agent string
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*/
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public function cleanUserAgentString($userAgentString)
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{
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// clean up the string
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$userAgentString = trim(strtolower($userAgentString));
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// replace browser names with their aliases
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$userAgentString = strtr($userAgentString, $this->getKnownBrowserAliases());
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// replace operating system names with their aliases
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$userAgentString = strtr($userAgentString, $this->getKnownOperatingSystemAliases());
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// replace engine names with their aliases
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$userAgentString = strtr($userAgentString, $this->getKnownEngineAliases());
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return $userAgentString;
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}
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/**
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* Get the list of filters that get called when parsing a user agent
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*
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* @return array list of valid callables
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*/
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public function getFilters()
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{
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return array(
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'filterAndroid',
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'filterGoogleChrome',
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'filterSafariVersion',
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'filterOperaVersion',
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'filterYahoo',
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'filterMsie',
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);
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}
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/**
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* Add a filter to be called when parsing a user agent
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*
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* @param string $filter name of the filter method
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*/
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public function addFilter($filter)
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{
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$this->filters += $filter;
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}
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/**
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* Get known browsers
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*
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* @return array the browsers
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*/
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protected function getKnownBrowsers()
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{
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return array(
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'msie',
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'firefox',
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'safari',
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'webkit',
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'opera',
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'netscape',
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'konqueror',
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'gecko',
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'chrome',
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'googlebot',
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'iphone',
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'msnbot',
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'applewebkit'
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);
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}
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/**
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* Get known browser aliases
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*
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* @return array the browser aliases
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*/
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protected function getKnownBrowserAliases()
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{
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return array(
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'shiretoko' => 'firefox',
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'namoroka' => 'firefox',
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'shredder' => 'firefox',
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'minefield' => 'firefox',
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'granparadiso' => 'firefox'
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);
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}
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/**
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* Get known operating system
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*
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* @return array the operating systems
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*/
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protected function getKnownOperatingSystems()
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{
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return array(
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'windows',
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'macintosh',
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'linux',
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'freebsd',
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'unix',
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'iphone'
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);
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}
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/**
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* Get known operating system aliases
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*
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* @return array the operating system aliases
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*/
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protected function getKnownOperatingSystemAliases()
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{
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return array();
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}
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/**
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* Get known engines
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*
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* @return array the engines
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*/
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protected function getKnownEngines()
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{
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return array(
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'gecko',
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'webkit',
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'trident',
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'presto'
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);
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}
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/**
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* Get known engines aliases
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*
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* @return array the engines aliases
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*/
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protected function getKnownEngineAliases()
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{
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return array();
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}
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/**
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* Filters
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*/
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/**
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* Google chrome has a safari like signature
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*/
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protected function filterGoogleChrome(array &$userAgent)
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{
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if ('safari' === $userAgent['browser_name'] && strpos($userAgent['string'], 'chrome/'))
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{
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$userAgent['browser_name'] = 'chrome';
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$userAgent['browser_version'] = preg_replace('|.+chrome/([0-9]+(?:\.[0-9]+)?).+|', '$1', $userAgent['string']);
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}
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}
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/**
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* Safari version is not encoded "normally"
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*/
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protected function filterSafariVersion(array &$userAgent)
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{
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if ('safari' === $userAgent['browser_name'] && strpos($userAgent['string'], ' version/'))
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{
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$userAgent['browser_version'] = preg_replace('|.+\sversion/([0-9]+(?:\.[0-9]+)?).+|', '$1', $userAgent['string']);
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}
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}
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/**
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* Opera 10.00 (and higher) version number is located at the end
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*/
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protected function filterOperaVersion(array &$userAgent)
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{
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if('opera' === $userAgent['browser_name'] && strpos($userAgent['string'], ' version/'))
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{
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$userAgent['browser_version'] = preg_replace('|.+\sversion/([0-9]+\.[0-9]+)\s*.*|', '$1', $userAgent['string']);
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}
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}
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/**
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* Yahoo bot has a special user agent string
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*/
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protected function filterYahoo(array &$userAgent)
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{
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if (null === $userAgent['browser_name'] && strpos($userAgent['string'], 'yahoo! slurp'))
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{
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$userAgent['browser_name'] = 'yahoobot';
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}
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}
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/**
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* MSIE does not always declare its engine
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*/
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protected function filterMsie(array &$userAgent)
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{
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if ('msie' === $userAgent['browser_name'] && empty($userAgent['engine']))
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{
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$userAgent['engine'] = 'trident';
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}
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}
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/**
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* Android has a safari like signature
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*/
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protected function filterAndroid(array &$userAgent) {
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if ('safari' === $userAgent['browser_name'] && strpos($userAgent['string'], 'android ')) {
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$userAgent['browser_name'] = 'android';
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$userAgent['operating_system'] = 'android';
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$userAgent['browser_version'] = preg_replace('|.+android ([0-9]+(?:\.[0-9]+)+).+|', '$1', $userAgent['string']);
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}
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}
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}
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