<?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.apetag.php //
// module for writing APE tags //
// dependencies: module.tag.apetag.php //
// ///
/////////////////////////////////////////////////////////////////
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.apetag.php', __FILE__, true);
class getid3_write_apetag
{
var $filename;
var $tag_data;
var $always_preserve_replaygain = true; // ReplayGain / MP3gain tags will be copied from old tag even if not passed in 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_apetag() {
return true;
}
function WriteAPEtag() {
// NOTE: All data passed to this function must be UTF-8 format
$getID3 = new getID3;
$ThisFileInfo = $getID3->analyze($this->filename);
if (isset($ThisFileInfo['ape']['tag_offset_start']) && isset($ThisFileInfo['lyrics3']['tag_offset_end'])) {
if ($ThisFileInfo['ape']['tag_offset_start'] >= $ThisFileInfo['lyrics3']['tag_offset_end']) {
// Current APE tag between Lyrics3 and ID3v1/EOF
// This break Lyrics3 functionality
if (!$this->DeleteAPEtag()) {
return false;
}
$ThisFileInfo = $getID3->analyze($this->filename);
}
}
if ($this->always_preserve_replaygain) {
$ReplayGainTagsToPreserve = array('mp3gain_minmax', 'mp3gain_album_minmax', 'mp3gain_undo', 'replaygain_track_peak', 'replaygain_track_gain', 'replaygain_album_peak', 'replaygain_album_gain');
foreach ($ReplayGainTagsToPreserve as $rg_key) {
if (isset($ThisFileInfo['ape']['items'][strtolower($rg_key)]['data'][0]) && !isset($this->tag_data[strtoupper($rg_key)][0])) {
$this->tag_data[strtoupper($rg_key)][0] = $ThisFileInfo['ape']['items'][strtolower($rg_key)]['data'][0];
}
}
}
if ($APEtag = $this->GenerateAPEtag()) {
if (is_writable($this->filename) && is_file($this->filename) && ($fp = fopen($this->filename, 'a+b'))) {
$oldignoreuserabort = ignore_user_abort(true);
flock($fp, LOCK_EX);
$PostAPEdataOffset = $ThisFileInfo['avdataend'];
if (isset($ThisFileInfo['ape']['tag_offset_end'])) {
$PostAPEdataOffset = max($PostAPEdataOffset, $ThisFileInfo['ape']['tag_offset_end']);
}
if (isset($ThisFileInfo['lyrics3']['tag_offset_start'])) {
$PostAPEdataOffset = max($PostAPEdataOffset, $ThisFileInfo['lyrics3']['tag_offset_start']);
}
fseek($fp, $PostAPEdataOffset, SEEK_SET);
$PostAPEdata = '';
if ($ThisFileInfo['filesize'] > $PostAPEdataOffset) {
$PostAPEdata = fread($fp, $ThisFileInfo['filesize'] - $PostAPEdataOffset);
}
fseek($fp, $PostAPEdataOffset, SEEK_SET);
if (isset($ThisFileInfo['ape']['tag_offset_start'])) {
fseek($fp, $ThisFileInfo['ape']['tag_offset_start'], SEEK_SET);
}
ftruncate($fp, ftell($fp));
fwrite($fp, $APEtag, strlen($APEtag));
if (!empty($PostAPEdata)) {
fwrite($fp, $PostAPEdata, strlen($PostAPEdata));
}
flock($fp, LOCK_UN);
fclose($fp);
ignore_user_abort($oldignoreuserabort);
return true;
}
}
return false;
}
function DeleteAPEtag() {
$getID3 = new 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;
}
function GenerateAPEtag() {
// NOTE: All data passed to this function must be UTF-8 format
$items = array();
if (!is_array($this->tag_data)) {
return false;
}
foreach ($this->tag_data as $key => $arrayofvalues) {
if (!is_array($arrayofvalues)) {
return false;
}
$valuestring = '';
foreach ($arrayofvalues as $value) {
$valuestring .= str_replace("\x00", '', $value)."\x00";
}
$valuestring = rtrim($valuestring, "\x00");
// Length of the assigned value in bytes
$tagitem = getid3_lib::LittleEndian2String(strlen($valuestring), 4);
//$tagitem .= $this->GenerateAPEtagFlags(true, true, false, 0, false);
$tagitem .= "\x00\x00\x00\x00";
$tagitem .= $this->CleanAPEtagItemKey($key)."\x00";
$tagitem .= $valuestring;
$items[] = $tagitem;
}
return $this->GenerateAPEtagHeaderFooter($items, true).implode('', $items).$this->GenerateAPEtagHeaderFooter($items, false);
}
function GenerateAPEtagHeaderFooter(&$items, $isheader=false) {
$tagdatalength = 0;
foreach ($items as $itemdata) {
$tagdatalength += strlen($itemdata);
}
$APEheader = 'APETAGEX';
$APEheader .= getid3_lib::LittleEndian2String(2000, 4);
$APEheader .= getid3_lib::LittleEndian2String(32 + $tagdatalength, 4);
$APEheader .= getid3_lib::LittleEndian2String(count($items), 4);
$APEheader .= $this->GenerateAPEtagFlags(true, true, $isheader, 0, false);
$APEheader .= str_repeat("\x00", 8);
return $APEheader;
}
function GenerateAPEtagFlags($header=true, $footer=true, $isheader=false, $encodingid=0, $readonly=false) {
$APEtagFlags = array_fill(0, 4, 0);
if ($header) {
$APEtagFlags[0] |= 0x80; // Tag contains a header
}
if (!$footer) {
$APEtagFlags[0] |= 0x40; // Tag contains no footer
}
if ($isheader) {
$APEtagFlags[0] |= 0x20; // This is the header, not the footer
}
// 0: Item contains text information coded in UTF-8
// 1: Item contains binary information °)
// 2: Item is a locator of external stored information °°)
// 3: reserved
$APEtagFlags[3] |= ($encodingid << 1);
if ($readonly) {
$APEtagFlags[3] |= 0x01; // Tag or Item is Read Only
}
return chr($APEtagFlags[3]).chr($APEtagFlags[2]).chr($APEtagFlags[1]).chr($APEtagFlags[0]);
}
function CleanAPEtagItemKey($itemkey) {
$itemkey = preg_replace("#[^\x20-\x7E]#i", '', $itemkey);
// http://www.personal.uni-jena.de/~pfk/mpp/sv8/apekey.html
switch (strtoupper($itemkey)) {
case 'EAN/UPC':
case 'ISBN':
case 'LC':
case 'ISRC':
$itemkey = strtoupper($itemkey);
break;
default:
$itemkey = ucwords($itemkey);
break;
}
return $itemkey;
}
}
?>
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