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<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
// //
// write.id3v1.php //
// module for writing ID3v1 tags //
// dependencies: module.tag.id3v1.php //
// ///
/////////////////////////////////////////////////////////////////
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v1.php', __FILE__, true);
class getid3_write_id3v1
{
var $filename;
var $tag_data;
var $warnings = array(); // any non-critical errors will be stored here
var $errors = array(); // any critical errors will be stored here
function getid3_write_id3v1() {
return true;
}
function WriteID3v1() {
if ((filesize($this->filename) >= (pow(2, 31) - 128)) || (filesize($this->filename) < 0)) {
$this->errors[] = 'Unable to write ID3v1 because file is larger than 2GB';
return false;
}
// File MUST be writeable - CHMOD(646) at least
if (is_writeable($this->filename)) {
if ($fp_source = @fopen($this->filename, 'r+b')) {
fseek($fp_source, -128, SEEK_END);
if (fread($fp_source, 3) == 'TAG') {
fseek($fp_source, -128, SEEK_END); // overwrite existing ID3v1 tag
} else {
fseek($fp_source, 0, SEEK_END); // append new ID3v1 tag
}
$this->tag_data['track'] = (isset($this->tag_data['track']) ? $this->tag_data['track'] : (isset($this->tag_data['track_number']) ? $this->tag_data['track_number'] : (isset($this->tag_data['tracknumber']) ? $this->tag_data['tracknumber'] : '')));
$new_id3v1_tag_data = getid3_id3v1::GenerateID3v1Tag(
@$this->tag_data['title'],
@$this->tag_data['artist'],
@$this->tag_data['album'],
@$this->tag_data['year'],
@$this->tag_data['genreid'],
@$this->tag_data['comment'],
@$this->tag_data['track']);
fwrite($fp_source, $new_id3v1_tag_data, 128);
fclose($fp_source);
return true;
} else {
$this->errors[] = 'Could not open '.$this->filename.' mode "r+b"';
return false;
}
}
$this->errors[] = 'File is not writeable: '.$this->filename;
return false;
}
function FixID3v1Padding() {
// ID3v1 data is supposed to be padded with NULL characters, but some taggers incorrectly use spaces
// This function rewrites the ID3v1 tag with correct padding
// Initialize getID3 engine
$getID3 = new getID3;
$ThisFileInfo = $getID3->analyze($this->filename);
if ($ThisFileInfo['filesize'] >= (pow(2, 31) - 128)) {
// cannot write tags on files > 2GB
return false;
}
if (isset($ThisFileInfo['tags']['id3v1'])) {
foreach ($ThisFileInfo['tags']['id3v1'] as $key => $value) {
$id3v1data[$key] = implode(',', $value);
}
$this->tag_data = $id3v1data;
return $this->WriteID3v1();
}
return false;
}
function RemoveID3v1() {
if ($ThisFileInfo['filesize'] >= pow(2, 31)) {
$this->errors[] = 'Unable to write ID3v1 because file is larger than 2GB';
return false;
}
// File MUST be writeable - CHMOD(646) at least
if (is_writeable($this->filename)) {
if ($fp_source = @fopen($this->filename, 'r+b')) {
fseek($fp_source, -128, SEEK_END);
if (fread($fp_source, 3) == 'TAG') {
ftruncate($fp_source, filesize($this->filename) - 128);
} else {
// no ID3v1 tag to begin with - do nothing
}
fclose($fp_source);
return true;
} else {
$this->errors[] = 'Could not open '.$this->filename.' mode "r+b"';
}
} else {
$this->errors[] = $this->filename.' is not writeable';
}
return false;
}
}
?>
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