/** * Registers all natively provided mime type guessers */ private function __construct() { if (FileBinaryMimeTypeGuesser::isSupported()) { $this->register(new FileBinaryMimeTypeGuesser()); } if (FileinfoMimeTypeGuesser::isSupported()) { $this->register(new FileinfoMimeTypeGuesser()); } }
/** * Tries to guess the mime type of the given file. * * The file is passed to each registered mime type guesser in reverse order * of their registration (last registered is queried first). Once a guesser * returns a value that is not NULL, this method terminates and returns the * value. * * @param string $path The path to the file * * @return string The mime type or NULL, if none could be guessed * * @throws \LogicException * @throws FileNotFoundException * @throws AccessDeniedException */ public function guess($path) { if (!is_file($path)) { throw new FileNotFoundException($path); } if (!is_readable($path)) { throw new AccessDeniedException($path); } if (!$this->guessers) { $msg = 'Unable to guess the mime type as no guessers are available'; if (!FileinfoMimeTypeGuesser::isSupported()) { $msg .= ' (Did you enable the php_fileinfo extension?)'; } throw new \LogicException($msg); } foreach ($this->guessers as $guesser) { if (null !== ($mimeType = $guesser->guess($path))) { return $mimeType; } } }