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<?php |
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declare(strict_types=1); |
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namespace Crossjoin\Browscap; |
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use Crossjoin\Browscap\Exception\ParserConfigurationException; |
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use Crossjoin\Browscap\Exception\ParserRuntimeException; |
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use Crossjoin\Browscap\Formatter\FormatterInterface; |
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use Crossjoin\Browscap\Formatter\PhpGetBrowser; |
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use Crossjoin\Browscap\Parser\ParserInterface; |
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use Crossjoin\Browscap\Parser\Sqlite\Parser; |
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/** |
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* Class Browscap |
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* |
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* @package Crossjoin\Browscap |
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* @author Christoph Ziegenberg <[email protected]> |
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* @link https://github.com/crossjoin/browscap |
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*/ |
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class Browscap |
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{ |
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const VERSION = '3.0.0'; |
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/** |
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* @var ParserInterface |
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*/ |
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protected $parser; |
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/** |
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* @var FormatterInterface |
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*/ |
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protected $formatter; |
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/** |
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* Update probability percentage, so a value of 1 would check for updates in |
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* 1% of the requests. A value of 0 disables automatic updates (default). |
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* |
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* @var int |
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*/ |
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protected $autoUpdateProbability = 0; |
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/** |
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* @return ParserInterface |
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* @throws ParserConfigurationException |
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*/ |
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public function getParser() : ParserInterface |
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{ |
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if ($this->parser === null) { |
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$this->setParser(new Parser()); |
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} |
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return $this->parser; |
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} |
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/** |
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* @param ParserInterface $parser |
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* |
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* @return Browscap |
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*/ |
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public function setParser(ParserInterface $parser) : Browscap |
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{ |
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$this->parser = $parser; |
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return $this; |
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} |
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/** |
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* @return FormatterInterface |
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*/ |
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public function getFormatter() : FormatterInterface |
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{ |
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if ($this->formatter === null) { |
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$this->setFormatter(new PhpGetBrowser()); |
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} |
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return $this->formatter; |
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} |
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/** |
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* @param FormatterInterface $formatter |
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* |
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* @return Browscap |
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*/ |
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public function setFormatter(FormatterInterface $formatter) : Browscap |
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{ |
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$this->formatter = $formatter; |
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return $this; |
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} |
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/** |
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* @return int |
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*/ |
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public function getAutoUpdateProbability() : int |
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{ |
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return $this->autoUpdateProbability; |
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} |
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/** |
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* @param int $autoUpdateProbability |
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* |
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* @return Browscap |
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*/ |
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public function setAutoUpdateProbability(int $autoUpdateProbability) : Browscap |
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{ |
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$this->autoUpdateProbability = $autoUpdateProbability; |
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return $this; |
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} |
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/** |
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* @param string|null $userAgent |
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* |
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* @return mixed |
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* @throws ParserConfigurationException |
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* @throws ParserRuntimeException |
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*/ |
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public function getBrowser(string $userAgent = null) |
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{ |
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// Check if an automatic update is required |
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$this->autoUpdate(); |
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// If no user agent is set, try to get it from the HTTP headers |
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if ($userAgent === null) { |
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$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? ''; |
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} |
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// Get rwa Browscap data and return a formatted version, using the set Formatter |
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$browscapData = $this->getParser()->getReader()->getBrowser($userAgent); |
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return $this->getFormatter()->format($browscapData); |
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} |
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/** |
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* @return Browscap |
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* @throws ParserConfigurationException |
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* @throws ParserRuntimeException |
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*/ |
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protected function autoUpdate() : Browscap |
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{ |
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$updateProbability = $this->getAutoUpdateProbability(); |
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if ($updateProbability >= random_int(1, 100) || $this->getParser()->getReader()->isUpdateRequired()) { |
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$this->update(); |
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} |
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return $this; |
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} |
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/** |
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* Updates Browscap data. Returns a boolean indicating if an update has been done or |
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* not (because not required). If the option 'forceUpdate' is used, the update is always |
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* done, no matter if required or not. |
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* |
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* @param bool $forceUpdate |
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* |
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* @return bool |
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* @throws ParserConfigurationException |
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* @throws ParserRuntimeException |
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*/ |
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public function update(bool $forceUpdate = false) : bool |
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{ |
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$parser = $this->getParser(); |
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// Check if an update is required, either because it's forced, or the source is newer |
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$updateRequired = $forceUpdate; |
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if ($updateRequired === false) { |
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$reader = $parser->getReader(); |
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$source = $parser->getSource(); |
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$updateRequired = ( |
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$reader->isUpdateRequired() || |
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$reader->getType() !== $source->getType() || |
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$reader->getVersion() < $source->getVersion() |
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); |
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} |
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// Generate ne parser data, if an update is required |
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if ($updateRequired === true) { |
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$parser->getWriter()->generate(); |
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// Re-initiate the reader and check if the update is still required, |
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// if so, there's something wrong with the generation of the data. |
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$reader = $parser->getReader(true); |
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if ($reader->isUpdateRequired() === true) { |
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throw new ParserRuntimeException( |
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'There is something wrong with the parser. The data have been re-generated without errors, ' . |
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'but the reader still requires an update of the data...' |
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); |
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} |
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} |
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return $updateRequired; |
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} |
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/** |
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* Use the class instance as a function that exactly behaves like PHP get_browser(). |
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* |
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* @param string $userAgent |
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* @param bool $returnArray |
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* |
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* @return mixed |
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* @throws ParserConfigurationException |
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* @throws ParserRuntimeException |
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*/ |
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public function __invoke(string $userAgent, bool $returnArray = false) |
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{ |
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$this->setFormatter(new PhpGetBrowser($returnArray)); |
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return $this->getBrowser($userAgent); |
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} |
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} |
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