MimeTypeGuesser::guess

public MimeTypeGuesser::guess($path)

public function guess($path) {
  if ($wrapper = $this->streamWrapperManager->getViaUri($path)) {
    // Get the real path from the stream wrapper, if available. Files stored
    // in remote file systems will not have one.
    $real_path = $wrapper->realpath();
    if ($real_path !== FALSE) {
      $path = $real_path;
    }
  }

  if ($this->sortedGuessers === NULL) {
    // Sort is not triggered yet.
    $this->sortedGuessers = $this->sortGuessers();
  }

  foreach ($this->sortedGuessers as $guesser) {
    $mime_type = $guesser->guess($path);
    if ($mime_type !== NULL) {
      return $mime_type;
    }
  }
}