WP_Translation_File

15abstract class WP_Translation_File {16	/**17	 * List of headers.18	 *19	 * @since 6.5.020	 * @var array<string, string>21	 */22	protected $headers = array();23 24	/**25	 * Whether file has been parsed.26	 *27	 * @since 6.5.028	 * @var bool29	 */30	protected $parsed = false;31 32	/**33	 * Error information.34	 *35	 * @since 6.5.036	 * @var string|null Error message or null if no error.37	 */38	protected $error;39 40	/**41	 * File name.42	 *43	 * @since 6.5.044	 * @var string45	 */46	protected $file = '';47 48	/**49	 * Translation entries.50	 *51	 * @since 6.5.052	 * @var array<string, string>53	 */54	protected $entries = array();55 56	/**57	 * Plural forms function.58	 *59	 * @since 6.5.060	 * @var callable|null Plural forms.61	 */62	protected $plural_forms = null;63 64	/**65	 * Constructor.66	 *67	 * @since 6.5.068	 *69	 * @param string $file File to load.70	 */71	protected function __construct( string $file ) {72		$this->file = $file;73	}74 75	/**76	 * Creates a new WP_Translation_File instance for a given file.77	 *78	 * @since 6.5.079	 *80	 * @param string      $file     File name.81	 * @param string|null $filetype Optional. File type. Default inferred from file name.82	 * @return false|WP_Translation_File83	 */84	public static function create( string $file, ?string $filetype = null ) {85		if ( ! is_readable( $file ) ) {86			return false;87		}88 89		if ( null === $filetype ) {90			$pos = strrpos( $file, '.' );91			if ( false !== $pos ) {92				$filetype = substr( $file, $pos + 1 );93			}94		}