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<?php |
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namespace Buttress\Browserslist\Browser; |
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use Buttress\Browserslist\Browserslist; |
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class VersionNormalizer |
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{ |
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/** @var \Buttress\Browserslist\Browserslist */ |
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protected $list; |
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public function __construct(Browserslist $list) |
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{ |
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$this->list = $list; |
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} |
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/** |
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* Take a version string and return the normalized version. |
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* This method uses the browserlist's main data and version alias data |
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* to resolve the proper version from an alias. |
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* |
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* @param $browserName |
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* @param $browserVersion |
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* @return null|string |
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*/ |
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public function normalizeVersion($browserName, $browserVersion) |
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{ |
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$data = $this->list->getDataByBrowser($browserName); |
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if ($version = $this->getVersionFromData($data, $browserVersion)) { |
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return $version; |
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} else { |
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$aliases = $this->list->getVersionAliases()->get($data['name'], []); |
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return $this->getVersionFromAliases($aliases, $browserVersion); |
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} |
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} |
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/** |
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* @param $data |
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* @param $version |
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* @return string|null |
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*/ |
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private function getVersionFromData($data, $version) |
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{ |
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$versions = array_get($data, 'versions', []); |
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if (in_array($version, $versions)) { |
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return $this->resolveRealVersion($versions, $version); |
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} |
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} |
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/** |
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* @param array $versions |
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* @param $version |
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* @return string|null |
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*/ |
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private function resolveRealVersion(array $versions, $version) |
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{ |
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foreach ($versions as $realVersion) { |
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if ($version == $realVersion) { |
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return $realVersion; |
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} |
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} |
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} |
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/** |
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* @param array $aliases |
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* @param $version |
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* @return string |
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*/ |
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private function getVersionFromAliases(array $aliases, $version) |
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{ |
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if (isset($aliases[$version])) { |
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return $aliases[$version]; |
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} |
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} |
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} |
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