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<?php |
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declare(strict_types = 1); |
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namespace BrowscapPHP\Parser; |
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use BrowscapPHP\Formatter\FormatterInterface; |
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use BrowscapPHP\Parser\Helper\GetDataInterface; |
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use BrowscapPHP\Parser\Helper\GetPatternInterface; |
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/** |
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* Ini parser class (compatible with PHP 5.3+) |
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*/ |
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final class Ini implements ParserInterface |
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{ |
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/** |
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* @var Helper\GetPatternInterface |
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*/ |
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private $patternHelper; |
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/** |
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* @var Helper\GetDataInterface |
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*/ |
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private $dataHelper; |
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/** |
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* Formatter to use |
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* |
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* @var \BrowscapPHP\Formatter\FormatterInterface |
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*/ |
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private $formatter; |
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/** |
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* class constructor |
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* |
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* @param \BrowscapPHP\Parser\Helper\GetPatternInterface $patternHelper |
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* @param \BrowscapPHP\Parser\Helper\GetDataInterface $dataHelper |
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* @param \BrowscapPHP\Formatter\FormatterInterface $formatter |
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*/ |
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public function __construct( |
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GetPatternInterface $patternHelper, |
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GetDataInterface $dataHelper, |
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FormatterInterface $formatter |
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) { |
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$this->patternHelper = $patternHelper; |
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$this->dataHelper = $dataHelper; |
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$this->formatter = $formatter; |
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} |
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/** |
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* Gets the browser data formatr for the given user agent |
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* (or null if no data avaailble, no even the default browser) |
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* |
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* @param string $userAgent |
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* |
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* @throws \UnexpectedValueException |
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* |
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* @return FormatterInterface|null |
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*/ |
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public function getBrowser(string $userAgent) : ?FormatterInterface |
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{ |
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$userAgent = strtolower($userAgent); |
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$formatter = null; |
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foreach ($this->patternHelper->getPatterns($userAgent) as $patterns) { |
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$patternToMatch = '/^(?:' . str_replace("\t", ')|(?:', $patterns) . ')$/i'; |
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if (! preg_match($patternToMatch, $userAgent)) { |
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continue; |
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} |
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// strtok() requires less memory than explode() |
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$pattern = strtok($patterns, "\t"); |
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while (false !== $pattern) { |
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$pattern = str_replace('[\d]', '(\d)', $pattern); |
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$quotedPattern = '/^' . $pattern . '$/i'; |
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$matches = []; |
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if (preg_match($quotedPattern, $userAgent, $matches)) { |
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// Insert the digits back into the pattern, so that we can search the settings for it |
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if (1 < count($matches)) { |
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array_shift($matches); |
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foreach ($matches as $oneMatch) { |
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$numPos = strpos($pattern, '(\d)'); |
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$pattern = substr_replace($pattern, $oneMatch, $numPos, 4); |
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} |
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} |
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// Try to get settings - as digits have been replaced to speed up the pattern search (up to 90 faster), |
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// we won't always find the data in the first step - so check if settings have been found and if not, |
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// search for the next pattern. |
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$settings = $this->dataHelper->getSettings($pattern); |
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if (0 < count($settings)) { |
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$formatter = $this->formatter; |
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$formatter->setData($settings); |
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break 2; |
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} |
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} |
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$pattern = strtok("\t"); |
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} |
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} |
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return $formatter; |
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} |
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} |
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browscap /
browscap-php
