WP_Translation_File_MO

15class WP_Translation_File_MO extends WP_Translation_File {16	/**17	 * Endian value.18	 *19	 * V for little endian, N for big endian, or false.20	 *21	 * Used for unpack().22	 *23	 * @since 6.5.024	 * @var false|'V'|'N'25	 */26	protected $uint32 = false;27 28	/**29	 * The magic number of the GNU message catalog format.30	 *31	 * @since 6.5.032	 * @var int33	 */34	const MAGIC_MARKER = 0x950412de;35 36	/**37	 * Detects endian and validates file.38	 *39	 * @since 6.5.040	 *41	 * @param string $header File contents.42	 * @return false|'V'|'N' V for little endian, N for big endian, or false on failure.43	 */44	protected function detect_endian_and_validate_file( string $header ) {45		$big = unpack( 'N', $header );46 47		if ( false === $big ) {48			return false;49		}50 51		$big = reset( $big );52 53		if ( false === $big ) {54			return false;55		}56 57		$little = unpack( 'V', $header );58 59		if ( false === $little ) {60			return false;61		}62 63		$little = reset( $little );64 65		if ( false === $little ) {66			return false;67		}68 69		// Force cast to an integer as it can be a float on x86 systems. See https://core.trac.wordpress.org/ticket/60678.70		if ( (int) self::MAGIC_MARKER === $big ) {71			return 'N';72		}73 74		// Force cast to an integer as it can be a float on x86 systems. See https://core.trac.wordpress.org/ticket/60678.75		if ( (int) self::MAGIC_MARKER === $little ) {76			return 'V';77		}78 79		$this->error = 'Magic marker does not exist';80		return false;81	}82 83	/**84	 * Parses the file.85	 *86	 * @since 6.5.087	 *88	 * @return bool True on success, false otherwise.89	 */90	protected function parse_file(): bool {91		$this->parsed = true;92 93		$file_contents = file_get_contents( $this->file );94