getid3_apetag

21class getid3_apetag extends getid3_handler22{23	/**24	 * true: return full data for all attachments;25	 * false: return no data for all attachments;26	 * integer: return data for attachments <= than this;27	 * string: save as file to this directory.28	 *29	 * @var int|bool|string30	 */31	public $inline_attachments = true;32 33	public $overrideendoffset  = 0;34 35	/**36	 * @return bool37	 */38	public function Analyze() {39		$info = &$this->getid3->info;40 41		if (!getid3_lib::intValueSupported($info['filesize'])) {42			$this->warning('Unable to check for APEtags because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB');43			return false;44		}45		if (PHP_INT_MAX == 2147483647) {46			// https://github.com/JamesHeinrich/getID3/issues/43947			$this->warning('APEtag flags may not be parsed correctly on 32-bit PHP');48		}49 50		$id3v1tagsize     = 128;51		$apetagheadersize = 32;52		$lyrics3tagsize   = 10;53 54		if ($this->overrideendoffset == 0) {55 56			$this->fseek(0 - $id3v1tagsize - $apetagheadersize - $lyrics3tagsize, SEEK_END);57			$APEfooterID3v1 = $this->fread($id3v1tagsize + $apetagheadersize + $lyrics3tagsize);58 59			//if (preg_match('/APETAGEX.{24}TAG.{125}$/i', $APEfooterID3v1)) {60			if (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $id3v1tagsize - $apetagheadersize, 8) == 'APETAGEX') {61 62				// APE tag found before ID3v163				$info['ape']['tag_offset_end'] = $info['filesize'] - $id3v1tagsize;64 65			//} elseif (preg_match('/APETAGEX.{24}$/i', $APEfooterID3v1)) {66			} elseif (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $apetagheadersize, 8) == 'APETAGEX') {67 68				// APE tag found, no ID3v169				$info['ape']['tag_offset_end'] = $info['filesize'];70 71			}72 73		} else {74 75			$this->fseek($this->overrideendoffset - $apetagheadersize);76			if ($this->fread(8) == 'APETAGEX') {77				$info['ape']['tag_offset_end'] = $this->overrideendoffset;78			}79 80		}81		if (!isset($info['ape']['tag_offset_end'])) {82 83			// APE tag not found84			unset($info['ape']);85			return false;86 87		}88 89		// shortcut90		$thisfile_ape = &$info['ape'];91 92		$this->fseek($thisfile_ape['tag_offset_end'] - $apetagheadersize);93		$APEfooterData = $this->fread(32);94		if (!($thisfile_ape['footer'] = $this->parseAPEheaderFooter($APEfooterData))) {95			$this->error('Error parsing APE footer at offset '.$thisfile_ape['tag_offset_end']);96			return false;97		}98 99		if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) {100			$this->fseek($thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize'] - $apetagheadersize);