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<?php |
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/** |
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* @license MIT |
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*/ |
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namespace Pivasic\Bundle\Common\File\MimeType; |
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use Pivasic\Bundle\Common\File\Exception\FileNotFoundException; |
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use Pivasic\Bundle\Common\File\Exception\AccessDeniedException; |
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/** |
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* Class MimeTypeGuesser |
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* @package Pivasic\Bundle\Common\File\MimeType |
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*/ |
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class MimeType |
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{ |
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/** |
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* Returns the singleton instance. |
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* |
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* @return MimeType |
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*/ |
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public static function getInstance() |
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{ |
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if (null === self::$instance) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* Get mime type or NULL, if none could be guessed. |
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* |
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* @param string $path Path to the file |
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* |
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* @return string |
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* |
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* @throws \LogicException |
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* @throws FileNotFoundException |
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* @throws AccessDeniedException |
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*/ |
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public function guess($path) |
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{ |
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if (!is_file($path)) { |
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throw new FileNotFoundException($path); |
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} |
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if (!is_readable($path)) { |
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throw new AccessDeniedException($path); |
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} |
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if (0 == count($this->guesserList)) { |
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$msg = 'Unable to guess the mime type as no guessers are available'; |
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if (!FileInfoMimeType::isSupported()) { |
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$msg .= ' (Did you enable the php_fileinfo extension?)'; |
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} |
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throw new \LogicException($msg); |
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} |
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/** @var FileInfoMimeType|BinaryMimeType $guesser */ |
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foreach ($this->guesserList as $guesser) { |
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if (null !== $mimeType = $guesser->guess($path)) { |
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return $mimeType; |
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} |
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} |
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return null; |
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} |
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/** |
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* Registers all natively provided mime type guessers. |
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*/ |
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private function __construct() |
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{ |
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$this->guesserList = []; |
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if (FileInfoMimeType::isSupported()) { |
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$this->guesserList[] = new FileInfoMimeType(); |
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} |
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if (BinaryMimeType::isSupported()) { |
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$this->guesserList[] = new BinaryMimeType(); |
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} |
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} |
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/** |
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* @var MimeType |
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*/ |
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private static $instance = null; |
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private $guesserList; |
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} |
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dspbee /
pivasic
