public function DeleteLyrics3()
{
// Initialize GetId3 engine
$getID3 = new GetId3_GetId3();
$ThisFileInfo = $getID3->analyze($this->filename);
if (isset($ThisFileInfo['lyrics3']['tag_offset_start']) && isset($ThisFileInfo['lyrics3']['tag_offset_end'])) {
if (is_readable($this->filename) && is_writable($this->filename) && is_file($this->filename) && ($fp = fopen($this->filename, 'a+b'))) {
flock($fp, LOCK_EX);
$oldignoreuserabort = ignore_user_abort(true);
fseek($fp, $ThisFileInfo['lyrics3']['tag_offset_end'], SEEK_SET);
$DataAfterLyrics3 = '';
if ($ThisFileInfo['filesize'] > $ThisFileInfo['lyrics3']['tag_offset_end']) {
$DataAfterLyrics3 = fread($fp, $ThisFileInfo['filesize'] - $ThisFileInfo['lyrics3']['tag_offset_end']);
}
ftruncate($fp, $ThisFileInfo['lyrics3']['tag_offset_start']);
if (!empty($DataAfterLyrics3)) {
fseek($fp, $ThisFileInfo['lyrics3']['tag_offset_start'], SEEK_SET);
fwrite($fp, $DataAfterLyrics3, strlen($DataAfterLyrics3));
}
flock($fp, LOCK_UN);
fclose($fp);
ignore_user_abort($oldignoreuserabort);
return true;
} else {
$this->errors[] = 'Cannot fopen(' . $this->filename . ', "a+b")';
return false;
}
}
// no Lyrics3 present
return true;
}
/**
*
* @return boolean
*/
public function setRealFileSize()
{
if (PHP_INT_MAX > 2147483647) {
$this->filesize = filesize($this->filename);
return true;
}
// 32-bit PHP will not return correct values for filesize() if file is >=2GB
// but GetId3->analyze() has workarounds to get actual filesize
$getID3 = new GetId3_GetId3();
$getID3->option_tag_id3v1 = false;
$getID3->option_tag_id3v2 = false;
$getID3->option_tag_apetag = false;
$getID3->option_tags_html = false;
$getID3->option_extra_info = false;
$ThisFileInfo = $getID3->analyze($this->filename);
$this->filesize = $ThisFileInfo['filesize'];
return true;
}
/**
*
* @return boolean
*/
public function RemoveReal()
{
// File MUST be writeable - CHMOD(646) at least
if (is_writeable($this->filename) && is_file($this->filename) && ($fp_source = fopen($this->filename, 'r+b'))) {
// Initialize GetId3 engine
$getID3 = new GetId3_GetId3();
$OldThisFileInfo = $getID3->analyze($this->filename);
if (empty($OldThisFileInfo['real']['chunks']) && !empty($OldThisFileInfo['real']['old_ra_header'])) {
$this->errors[] = 'Cannot remove Real tags from old-style file format';
fclose($fp_source);
return false;
}
if (empty($OldThisFileInfo['real']['chunks'])) {
$this->errors[] = 'Cannot remove Real tags because cannot find DATA chunk in file';
fclose($fp_source);
return false;
}
foreach ($OldThisFileInfo['real']['chunks'] as $chunknumber => $chunkarray) {
$oldChunkInfo[$chunkarray['name']] = $chunkarray;
}
if (empty($oldChunkInfo['CONT'])) {
// no existing CONT chunk
fclose($fp_source);
return true;
}
$BeforeOffset = $oldChunkInfo['CONT']['offset'];
$AfterOffset = $oldChunkInfo['CONT']['offset'] + $oldChunkInfo['CONT']['length'];
if ($tempfilename = tempnam(GetId3_GetId3::getTempDir(), 'getID3')) {
if (is_writable($tempfilename) && is_file($tempfilename) && ($fp_temp = fopen($tempfilename, 'wb'))) {
rewind($fp_source);
fwrite($fp_temp, fread($fp_source, $BeforeOffset));
fseek($fp_source, $AfterOffset, SEEK_SET);
while ($buffer = fread($fp_source, $this->fread_buffer_size)) {
fwrite($fp_temp, $buffer, strlen($buffer));
}
fclose($fp_temp);
if (copy($tempfilename, $this->filename)) {
unlink($tempfilename);
fclose($fp_source);
return true;
}
unlink($tempfilename);
$this->errors[] = 'FAILED: copy(' . $tempfilename . ', ' . $this->filename . ')';
} else {
$this->errors[] = 'Could not fopen("' . $tempfilename . '", "wb")';
}
}
fclose($fp_source);
return false;
}
$this->errors[] = 'Could not fopen("' . $this->filename . '", "r+b")';
return false;
}
/**
* public: analyze file
*
* @param type $filename
* @return type
*/
public function analyze($filename)
{
if (file_exists($filename)) {
// Short-hands
$filetime = filemtime($filename);
$filesize = filesize($filename);
// Lookup file
$this->cursor = mysql_query("SELECT `value` FROM `" . mysql_real_escape_string($this->table) . "` WHERE (`filename` = '" . mysql_real_escape_string($filename) . "') AND (`filesize` = '" . mysql_real_escape_string($filesize) . "') AND (`filetime` = '" . mysql_real_escape_string($filetime) . "')", $this->connection);
if (mysql_num_rows($this->cursor) > 0) {
// Hit
list($result) = mysql_fetch_array($this->cursor);
return unserialize(base64_decode($result));
}
}
// Miss
$analysis = parent::analyze($filename);
// Save result
if (file_exists($filename)) {
$this->cursor = mysql_query("INSERT INTO `" . mysql_real_escape_string($this->table) . "` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES ('" . mysql_real_escape_string($filename) . "', '" . mysql_real_escape_string($filesize) . "', '" . mysql_real_escape_string($filetime) . "', '" . mysql_real_escape_string(time()) . "', '" . mysql_real_escape_string(base64_encode(serialize($analysis))) . "')", $this->connection);
}
return $analysis;
}
/**
*
* @return boolean
*/
public function DeleteAPEtag()
{
$getID3 = new GetId3_GetId3();
$ThisFileInfo = $getID3->analyze($this->filename);
if (isset($ThisFileInfo['ape']['tag_offset_start']) && isset($ThisFileInfo['ape']['tag_offset_end'])) {
if (is_writable($this->filename) && is_file($this->filename) && ($fp = fopen($this->filename, 'a+b'))) {
flock($fp, LOCK_EX);
$oldignoreuserabort = ignore_user_abort(true);
fseek($fp, $ThisFileInfo['ape']['tag_offset_end'], SEEK_SET);
$DataAfterAPE = '';
if ($ThisFileInfo['filesize'] > $ThisFileInfo['ape']['tag_offset_end']) {
$DataAfterAPE = fread($fp, $ThisFileInfo['filesize'] - $ThisFileInfo['ape']['tag_offset_end']);
}
ftruncate($fp, $ThisFileInfo['ape']['tag_offset_start']);
fseek($fp, $ThisFileInfo['ape']['tag_offset_start'], SEEK_SET);
if (!empty($DataAfterAPE)) {
fwrite($fp, $DataAfterAPE, strlen($DataAfterAPE));
}
flock($fp, LOCK_UN);
fclose($fp);
ignore_user_abort($oldignoreuserabort);
return true;
}
return false;
}
return true;
}
/**
* analyze file
*
* @param type $filename
* @return type
*/
public function analyze($filename)
{
if (file_exists($filename)) {
// Calc key filename::mod_time::size - should be unique
$key = $filename . '::' . filemtime($filename) . '::' . filesize($filename);
// Loopup key
$result = dba_fetch($key, $this->dba);
// Hit
if ($result !== false) {
return unserialize($result);
}
}
// Miss
$result = parent::analyze($filename);
// Save result
if (file_exists($filename)) {
dba_insert($key, serialize($result), $this->dba);
}
return $result;
}
/**
* analyze file and cache them, if cached pull from the db
* @param type $filename
* @return boolean
*/
public function analyze($filename)
{
if (!file_exists($filename)) {
return false;
}
// items to track for caching
$filetime = filemtime($filename);
$filesize = filesize($filename);
// this will be saved for a quick directory lookup of analized files
// ... why do 50 seperate sql quries when you can do 1 for the same result
$dirname = dirname($filename);
// Lookup file
$db = $this->db;
$sql = $this->get_id3_data;
$stmt = $db->prepare($sql);
$stmt->bindValue(':filename', $filename, SQLITE3_TEXT);
$stmt->bindValue(':filesize', $filesize, SQLITE3_INTEGER);
$stmt->bindValue(':filetime', $filetime, SQLITE3_INTEGER);
$res = $stmt->execute();
list($result) = $res->fetchArray();
if (count($result) > 0) {
return unserialize(base64_decode($result));
}
// if it hasn't been analyzed before, then do it now
$analysis = parent::analyze($filename);
// Save result
$sql = $this->cache_file;
$stmt = $db->prepare($sql);
$stmt->bindValue(':filename', $filename, SQLITE3_TEXT);
$stmt->bindValue(':dirname', $dirname, SQLITE3_TEXT);
$stmt->bindValue(':filesize', $filesize, SQLITE3_INTEGER);
$stmt->bindValue(':filetime', $filetime, SQLITE3_INTEGER);
$stmt->bindValue(':atime', time(), SQLITE3_INTEGER);
$stmt->bindValue(':val', base64_encode(serialize($analysis)), SQLITE3_TEXT);
$res = $stmt->execute();
return $analysis;
}