Timers WIP

Added getID3

1 files changed, 1309 insertions, 0 deletions

diff --git a/getid3/getid3.lib.php b/getid3/getid3.lib.php
new file mode 100644
index 0000000..4ed5e36
--- /dev/null
+++ b/getid3/getid3.lib.php
@@ -0,0 +1,1309 @@
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org>               //
+//  available at http://getid3.sourceforge.net                 //
+//            or http://www.getid3.org                         //
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// getid3.lib.php - part of getID3()                           //
+// See readme.txt for more details                             //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+
+class getid3_lib
+{
+
+	function PrintHexBytes($string, $hex=true, $spaces=true, $htmlsafe=true) {
+		$returnstring = '';
+		for ($i = 0; $i < strlen($string); $i++) {
+			if ($hex) {
+				$returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
+			} else {
+				$returnstring .= ' '.(ereg("[\x20-\x7E]", $string{$i}) ? $string{$i} : '¤');
+			}
+			if ($spaces) {
+				$returnstring .= ' ';
+			}
+		}
+		if ($htmlsafe) {
+			$returnstring = htmlentities($returnstring);
+		}
+		return $returnstring;
+	}
+
+	function SafeStripSlashes($text) {
+		if (get_magic_quotes_gpc()) {
+			return stripslashes($text);
+		}
+		return $text;
+	}
+
+
+	function trunc($floatnumber) {
+		// truncates a floating-point number at the decimal point
+		// returns int (if possible, otherwise float)
+		if ($floatnumber >= 1) {
+			$truncatednumber = floor($floatnumber);
+		} elseif ($floatnumber <= -1) {
+			$truncatednumber = ceil($floatnumber);
+		} else {
+			$truncatednumber = 0;
+		}
+		if ($truncatednumber <= 1073741824) { // 2^30
+			$truncatednumber = (int) $truncatednumber;
+		}
+		return $truncatednumber;
+	}
+
+
+	function CastAsInt($floatnum) {
+		// convert to float if not already
+		$floatnum = (float) $floatnum;
+
+		// convert a float to type int, only if possible
+		if (getid3_lib::trunc($floatnum) == $floatnum) {
+			// it's not floating point
+			if ($floatnum <= 2147483647) { // 2^31
+				// it's within int range
+				$floatnum = (int) $floatnum;
+			}
+		}
+		return $floatnum;
+	}
+
+
+	function DecimalBinary2Float($binarynumerator) {
+		$numerator   = getid3_lib::Bin2Dec($binarynumerator);
+		$denominator = getid3_lib::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
+		return ($numerator / $denominator);
+	}
+
+
+	function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
+		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
+		if (strpos($binarypointnumber, '.') === false) {
+			$binarypointnumber = '0.'.$binarypointnumber;
+		} elseif ($binarypointnumber{0} == '.') {
+			$binarypointnumber = '0'.$binarypointnumber;
+		}
+		$exponent = 0;
+		while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
+			if (substr($binarypointnumber, 1, 1) == '.') {
+				$exponent--;
+				$binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
+			} else {
+				$pointpos = strpos($binarypointnumber, '.');
+				$exponent += ($pointpos - 1);
+				$binarypointnumber = str_replace('.', '', $binarypointnumber);
+				$binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1);
+			}
+		}
+		$binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
+		return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
+	}
+
+
+	function Float2BinaryDecimal($floatvalue) {
+		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
+		$maxbits = 128; // to how many bits of precision should the calculations be taken?
+		$intpart   = getid3_lib::trunc($floatvalue);
+		$floatpart = abs($floatvalue - $intpart);
+		$pointbitstring = '';
+		while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
+			$floatpart *= 2;
+			$pointbitstring .= (string) getid3_lib::trunc($floatpart);
+			$floatpart -= getid3_lib::trunc($floatpart);
+		}
+		$binarypointnumber = decbin($intpart).'.'.$pointbitstring;
+		return $binarypointnumber;
+	}
+
+
+	function Float2String($floatvalue, $bits) {
+		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
+		switch ($bits) {
+			case 32:
+				$exponentbits = 8;
+				$fractionbits = 23;
+				break;
+
+			case 64:
+				$exponentbits = 11;
+				$fractionbits = 52;
+				break;
+
+			default:
+				return false;
+				break;
+		}
+		if ($floatvalue >= 0) {
+			$signbit = '0';
+		} else {
+			$signbit = '1';
+		}
+		$normalizedbinary  = getid3_lib::NormalizeBinaryPoint(getid3_lib::Float2BinaryDecimal($floatvalue), $fractionbits);
+		$biasedexponent    = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
+		$exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
+		$fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
+
+		return getid3_lib::BigEndian2String(getid3_lib::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
+	}
+
+
+	function LittleEndian2Float($byteword) {
+		return getid3_lib::BigEndian2Float(strrev($byteword));
+	}
+
+
+	function BigEndian2Float($byteword) {
+		// ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
+		// http://www.psc.edu/general/software/packages/ieee/ieee.html
+		// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
+
+		$bitword = getid3_lib::BigEndian2Bin($byteword);
+		if (!$bitword) {
+            return 0;
+        }
+		$signbit = $bitword{0};
+
+		switch (strlen($byteword) * 8) {
+			case 32:
+				$exponentbits = 8;
+				$fractionbits = 23;
+				break;
+
+			case 64:
+				$exponentbits = 11;
+				$fractionbits = 52;
+				break;
+
+			case 80:
+				// 80-bit Apple SANE format
+				// http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
+				$exponentstring = substr($bitword, 1, 15);
+				$isnormalized = intval($bitword{16});
+				$fractionstring = substr($bitword, 17, 63);
+				$exponent = pow(2, getid3_lib::Bin2Dec($exponentstring) - 16383);
+				$fraction = $isnormalized + getid3_lib::DecimalBinary2Float($fractionstring);
+				$floatvalue = $exponent * $fraction;
+				if ($signbit == '1') {
+					$floatvalue *= -1;
+				}
+				return $floatvalue;
+				break;
+
+			default:
+				return false;
+				break;
+		}
+		$exponentstring = substr($bitword, 1, $exponentbits);
+		$fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
+		$exponent = getid3_lib::Bin2Dec($exponentstring);
+		$fraction = getid3_lib::Bin2Dec($fractionstring);
+
+		if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
+			// Not a Number
+			$floatvalue = false;
+		} elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
+			if ($signbit == '1') {
+				$floatvalue = '-infinity';
+			} else {
+				$floatvalue = '+infinity';
+			}
+		} elseif (($exponent == 0) && ($fraction == 0)) {
+			if ($signbit == '1') {
+				$floatvalue = -0;
+			} else {
+				$floatvalue = 0;
+			}
+			$floatvalue = ($signbit ? 0 : -0);
+		} elseif (($exponent == 0) && ($fraction != 0)) {
+			// These are 'unnormalized' values
+			$floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * getid3_lib::DecimalBinary2Float($fractionstring);
+			if ($signbit == '1') {
+				$floatvalue *= -1;
+			}
+		} elseif ($exponent != 0) {
+			$floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + getid3_lib::DecimalBinary2Float($fractionstring));
+			if ($signbit == '1') {
+				$floatvalue *= -1;
+			}
+		}
+		return (float) $floatvalue;
+	}
+
+
+	function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
+		$intvalue = 0;
+		$bytewordlen = strlen($byteword);
+		for ($i = 0; $i < $bytewordlen; $i++) {
+			if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
+				$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7);
+			} else {
+				$intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
+			}
+		}
+		if ($signed && !$synchsafe) {
+			// synchsafe ints are not allowed to be signed
+			switch ($bytewordlen) {
+				case 1:
+				case 2:
+				case 3:
+				case 4:
+					$signmaskbit = 0x80 << (8 * ($bytewordlen - 1));
+					if ($intvalue & $signmaskbit) {
+						$intvalue = 0 - ($intvalue & ($signmaskbit - 1));
+					}
+					break;
+
+				default:
+					die('ERROR: Cannot have signed integers larger than 32-bits in getid3_lib::BigEndian2Int()');
+					break;
+			}
+		}
+		return getid3_lib::CastAsInt($intvalue);
+	}
+
+
+	function LittleEndian2Int($byteword, $signed=false) {
+		return getid3_lib::BigEndian2Int(strrev($byteword), false, $signed);
+	}
+
+
+	function BigEndian2Bin($byteword) {
+		$binvalue = '';
+		$bytewordlen = strlen($byteword);
+		for ($i = 0; $i < $bytewordlen; $i++) {
+			$binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT);
+		}
+		return $binvalue;
+	}
+
+
+	function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
+		if ($number < 0) {
+			return false;
+		}
+		$maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
+		$intstring = '';
+		if ($signed) {
+			if ($minbytes > 4) {
+				die('ERROR: Cannot have signed integers larger than 32-bits in getid3_lib::BigEndian2String()');
+			}
+			$number = $number & (0x80 << (8 * ($minbytes - 1)));
+		}
+		while ($number != 0) {
+			$quotient = ($number / ($maskbyte + 1));
+			$intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
+			$number = floor($quotient);
+		}
+		return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
+	}
+
+
+	function Dec2Bin($number) {
+		while ($number >= 256) {
+			$bytes[] = (($number / 256) - (floor($number / 256))) * 256;
+			$number = floor($number / 256);
+		}
+		$bytes[] = $number;
+		$binstring = '';
+		for ($i = 0; $i < count($bytes); $i++) {
+			$binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring;
+		}
+		return $binstring;
+	}
+
+
+	function Bin2Dec($binstring, $signed=false) {
+		$signmult = 1;
+		if ($signed) {
+			if ($binstring{0} == '1') {
+				$signmult = -1;
+			}
+			$binstring = substr($binstring, 1);
+		}
+		$decvalue = 0;
+		for ($i = 0; $i < strlen($binstring); $i++) {
+			$decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
+		}
+		return getid3_lib::CastAsInt($decvalue * $signmult);
+	}
+
+
+	function Bin2String($binstring) {
+		// return 'hi' for input of '0110100001101001'
+		$string = '';
+		$binstringreversed = strrev($binstring);
+		for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
+			$string = chr(getid3_lib::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
+		}
+		return $string;
+	}
+
+
+	function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
+		$intstring = '';
+		while ($number > 0) {
+			if ($synchsafe) {
+				$intstring = $intstring.chr($number & 127);
+				$number >>= 7;
+			} else {
+				$intstring = $intstring.chr($number & 255);
+				$number >>= 8;
+			}
+		}
+		return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
+	}
+
+
+	function array_merge_clobber($array1, $array2) {
+		// written by kcØhireability*com
+		// taken from http://www.php.net/manual/en/function.array-merge-recursive.php
+		if (!is_array($array1) || !is_array($array2)) {
+			return false;
+		}
+		$newarray = $array1;
+		foreach ($array2 as $key => $val) {
+			if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
+				$newarray[$key] = getid3_lib::array_merge_clobber($newarray[$key], $val);
+			} else {
+				$newarray[$key] = $val;
+			}
+		}
+		return $newarray;
+	}
+
+
+	function array_merge_noclobber($array1, $array2) {
+		if (!is_array($array1) || !is_array($array2)) {
+			return false;
+		}
+		$newarray = $array1;
+		foreach ($array2 as $key => $val) {
+			if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
+				$newarray[$key] = getid3_lib::array_merge_noclobber($newarray[$key], $val);
+			} elseif (!isset($newarray[$key])) {
+				$newarray[$key] = $val;
+			}
+		}
+		return $newarray;
+	}
+
+
+	function fileextension($filename, $numextensions=1) {
+		if (strstr($filename, '.')) {
+			$reversedfilename = strrev($filename);
+			$offset = 0;
+			for ($i = 0; $i < $numextensions; $i++) {
+				$offset = strpos($reversedfilename, '.', $offset + 1);
+				if ($offset === false) {
+					return '';
+				}
+			}
+			return strrev(substr($reversedfilename, 0, $offset));
+		}
+		return '';
+	}
+
+
+	function PlaytimeString($playtimeseconds) {
+		$sign = (($playtimeseconds < 0) ? '-' : '');
+		$playtimeseconds = abs($playtimeseconds);
+		$contentseconds = round((($playtimeseconds / 60) - floor($playtimeseconds / 60)) * 60);
+		$contentminutes = floor($playtimeseconds / 60);
+		if ($contentseconds >= 60) {
+			$contentseconds -= 60;
+			$contentminutes++;
+		}
+		return $sign.intval($contentminutes).':'.str_pad($contentseconds, 2, 0, STR_PAD_LEFT);
+	}
+
+
+	function image_type_to_mime_type($imagetypeid) {
+		// only available in PHP v4.3.0+
+		static $image_type_to_mime_type = array();
+		if (empty($image_type_to_mime_type)) {
+			$image_type_to_mime_type[1]  = 'image/gif';                     // GIF
+			$image_type_to_mime_type[2]  = 'image/jpeg';                    // JPEG
+			$image_type_to_mime_type[3]  = 'image/png';                     // PNG
+			$image_type_to_mime_type[4]  = 'application/x-shockwave-flash'; // Flash
+			$image_type_to_mime_type[5]  = 'image/psd';                     // PSD
+			$image_type_to_mime_type[6]  = 'image/bmp';                     // BMP
+			$image_type_to_mime_type[7]  = 'image/tiff';                    // TIFF: little-endian (Intel)
+			$image_type_to_mime_type[8]  = 'image/tiff';                    // TIFF: big-endian (Motorola)
+			//$image_type_to_mime_type[9]  = 'image/jpc';                   // JPC
+			//$image_type_to_mime_type[10] = 'image/jp2';                   // JPC
+			//$image_type_to_mime_type[11] = 'image/jpx';                   // JPC
+			//$image_type_to_mime_type[12] = 'image/jb2';                   // JPC
+			$image_type_to_mime_type[13] = 'application/x-shockwave-flash'; // Shockwave
+			$image_type_to_mime_type[14] = 'image/iff';                     // IFF
+		}
+		return (isset($image_type_to_mime_type[$imagetypeid]) ? $image_type_to_mime_type[$imagetypeid] : 'application/octet-stream');
+	}
+
+
+	function DateMac2Unix($macdate) {
+		// Macintosh timestamp: seconds since 00:00h January 1, 1904
+		// UNIX timestamp:      seconds since 00:00h January 1, 1970
+		return getid3_lib::CastAsInt($macdate - 2082844800);
+	}
+
+
+	function FixedPoint8_8($rawdata) {
+		return getid3_lib::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (getid3_lib::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
+	}
+
+
+	function FixedPoint16_16($rawdata) {
+		return getid3_lib::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (getid3_lib::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
+	}
+
+
+	function FixedPoint2_30($rawdata) {
+		$binarystring = getid3_lib::BigEndian2Bin($rawdata);
+		return getid3_lib::Bin2Dec(substr($binarystring, 0, 2)) + (float) (getid3_lib::Bin2Dec(substr($binarystring, 2, 30)) / 1073741824);
+	}
+
+
+	function CreateDeepArray($ArrayPath, $Separator, $Value) {
+		// assigns $Value to a nested array path:
+		//   $foo = getid3_lib::CreateDeepArray('/path/to/my', '/', 'file.txt')
+		// is the same as:
+		//   $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
+		// or
+		//   $foo['path']['to']['my'] = 'file.txt';
+		while ($ArrayPath && ($ArrayPath{0} == $Separator)) {
+			$ArrayPath = substr($ArrayPath, 1);
+		}
+		if (($pos = strpos($ArrayPath, $Separator)) !== false) {
+			$ReturnedArray[substr($ArrayPath, 0, $pos)] = getid3_lib::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
+		} else {
+			$ReturnedArray[$ArrayPath] = $Value;
+		}
+		return $ReturnedArray;
+	}
+
+	function array_max($arraydata, $returnkey=false) {
+		$maxvalue = false;
+		$maxkey = false;
+		foreach ($arraydata as $key => $value) {
+			if (!is_array($value)) {
+				if ($value > $maxvalue) {
+					$maxvalue = $value;
+					$maxkey = $key;
+				}
+			}
+		}
+		return ($returnkey ? $maxkey : $maxvalue);
+	}
+
+	function array_min($arraydata, $returnkey=false) {
+		$minvalue = false;
+		$minkey = false;
+		foreach ($arraydata as $key => $value) {
+			if (!is_array($value)) {
+				if ($value > $minvalue) {
+					$minvalue = $value;
+					$minkey = $key;
+				}
+			}
+		}
+		return ($returnkey ? $minkey : $minvalue);
+	}
+
+
+	function md5_file($file) {
+
+		// md5_file() exists in PHP 4.2.0+.
+		if (function_exists('md5_file')) {
+			return md5_file($file);
+		}
+
+		if (GETID3_OS_ISWINDOWS) {
+
+			$RequiredFiles = array('cygwin1.dll', 'md5sum.exe');
+			foreach ($RequiredFiles as $required_file) {
+				if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
+					die(implode(' and ', $RequiredFiles).' are required in '.GETID3_HELPERAPPSDIR.' for getid3_lib::md5_file() to function under Windows in PHP < v4.2.0');
+				}
+			}
+			$commandline = GETID3_HELPERAPPSDIR.'md5sum.exe "'.str_replace('/', DIRECTORY_SEPARATOR, $file).'"';
+			if (ereg("^[\\]?([0-9a-f]{32})", strtolower(`$commandline`), $r)) {
+				return $r[1];
+			}
+
+		} else {
+
+			// The following works under UNIX only
+			$file = str_replace('`', '\\`', $file);
+			if (ereg("^([0-9a-f]{32})[ \t\n\r]", `md5sum "$file"`, $r)) {
+				return $r[1];
+			}
+
+		}
+		return false;
+	}
+
+
+	function sha1_file($file) {
+
+		// sha1_file() exists in PHP 4.3.0+.
+		if (function_exists('sha1_file')) {
+			return sha1_file($file);
+		}
+
+		$file = str_replace('`', '\\`', $file);
+
+		if (GETID3_OS_ISWINDOWS) {
+
+			$RequiredFiles = array('cygwin1.dll', 'sha1sum.exe');
+			foreach ($RequiredFiles as $required_file) {
+				if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
+					die(implode(' and ', $RequiredFiles).' are required in '.GETID3_HELPERAPPSDIR.' for getid3_lib::sha1_file() to function under Windows in PHP < v4.3.0');
+				}
+			}
+			$commandline = GETID3_HELPERAPPSDIR.'sha1sum.exe "'.str_replace('/', DIRECTORY_SEPARATOR, $file).'"';
+			if (ereg("^sha1=([0-9a-f]{40})", strtolower(`$commandline`), $r)) {
+				return $r[1];
+			}
+
+		} else {
+
+			$commandline = 'sha1sum '.escapeshellarg($file).'';
+			if (ereg("^([0-9a-f]{40})[ \t\n\r]", strtolower(`$commandline`), $r)) {
+				return $r[1];
+			}
+
+		}
+
+		return false;
+	}
+
+
+	// Allan Hansen <ahØartemis*dk>
+	// getid3_lib::md5_data() - returns md5sum for a file from startuing position to absolute end position
+	function hash_data($file, $offset, $end, $algorithm) {
+		if ($end >= pow(2, 31)) {
+			return false;
+		}
+
+		switch ($algorithm) {
+			case 'md5':
+				$hash_function = 'md5_file';
+				$unix_call     = 'md5sum';
+				$windows_call  = 'md5sum.exe';
+				$hash_length   = 32;
+				break;
+
+			case 'sha1':
+				$hash_function = 'sha1_file';
+				$unix_call     = 'sha1sum';
+				$windows_call  = 'sha1sum.exe';
+				$hash_length   = 40;
+				break;
+
+			default:
+				die('Invalid algorithm ('.$algorithm.') in getid3_lib::hash_data()');
+				break;
+		}
+		$size = $end - $offset;
+		while (true) {
+			if (GETID3_OS_ISWINDOWS) {
+
+				// It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
+				// Fall back to create-temp-file method:
+				if ($algorithm == 'sha1') {
+					break;
+				}
+
+				$RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
+				foreach ($RequiredFiles as $required_file) {
+					if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
+						// helper apps not available - fall back to old method
+						break;
+					}
+				}
+				$commandline  = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' "'.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).'" | ';
+				$commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | ';
+				$commandline .= GETID3_HELPERAPPSDIR.$windows_call;
+
+			} else {
+
+				$commandline  = 'head -c'.$end.' '.escapeshellarg($file).' | ';
+				$commandline .= 'tail -c'.$size.' | ';
+				$commandline .= $unix_call;
+
+			}
+			if ((bool) ini_get('safe_mode')) {
+				$ThisFileInfo['warning'][] = 'PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm';
+				break;
+			}
+			return substr(`$commandline`, 0, $hash_length);
+		}
+
+		// try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
+		if (($data_filename = tempnam('*', 'getID3')) === false) {
+			// can't find anywhere to create a temp file, just die
+			return false;
+		}
+
+		// Init
+		$result = false;
+
+		// copy parts of file
+		if ($fp = @fopen($file, 'rb')) {
+
+			if ($fp_data = @fopen($data_filename, 'wb')) {
+
+				fseek($fp, $offset, SEEK_SET);
+				$byteslefttowrite = $end - $offset;
+				while (($byteslefttowrite > 0) && ($buffer = fread($fp, GETID3_FREAD_BUFFER_SIZE))) {
+					$byteswritten = fwrite($fp_data, $buffer, $byteslefttowrite);
+					$byteslefttowrite -= $byteswritten;
+				}
+				fclose($fp_data);
+				$result = getid3_lib::$hash_function($data_filename);
+
+			}
+			fclose($fp);
+		}
+		unlink($data_filename);
+		return $result;
+	}
+
+
+	function iconv_fallback_int_utf8($charval) {
+		if ($charval < 128) {
+			// 0bbbbbbb
+			$newcharstring = chr($charval);
+		} elseif ($charval < 2048) {
+			// 110bbbbb 10bbbbbb
+			$newcharstring  = chr(($charval >> 6) | 0xC0);
+			$newcharstring .= chr(($charval & 0x3F) | 0x80);
+		} elseif ($charval < 65536) {
+			// 1110bbbb 10bbbbbb 10bbbbbb
+			$newcharstring  = chr(($charval >> 12) | 0xE0);
+			$newcharstring .= chr(($charval >>  6) | 0xC0);
+			$newcharstring .= chr(($charval & 0x3F) | 0x80);
+		} else {
+			// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
+			$newcharstring  = chr(($charval >> 18) | 0xF0);
+			$newcharstring .= chr(($charval >> 12) | 0xC0);
+			$newcharstring .= chr(($charval >>  6) | 0xC0);
+			$newcharstring .= chr(($charval & 0x3F) | 0x80);
+		}
+		return $newcharstring;
+	}
+
+	// ISO-8859-1 => UTF-8
+	function iconv_fallback_iso88591_utf8($string, $bom=false) {
+		if (function_exists('utf8_encode')) {
+			return utf8_encode($string);
+		}
+		// utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
+		$newcharstring = '';
+		if ($bom) {
+			$newcharstring .= "\xEF\xBB\xBF";
+		}
+		for ($i = 0; $i < strlen($string); $i++) {
+			$charval = ord($string{$i});
+			$newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval);
+		}
+		return $newcharstring;
+	}
+
+	// ISO-8859-1 => UTF-16BE
+	function iconv_fallback_iso88591_utf16be($string, $bom=false) {
+		$newcharstring = '';
+		if ($bom) {
+			$newcharstring .= "\xFE\xFF";
+		}
+		for ($i = 0; $i < strlen($string); $i++) {
+			$newcharstring .= "\x00".$string{$i};
+		}
+		return $newcharstring;
+	}
+
+	// ISO-8859-1 => UTF-16LE
+	function iconv_fallback_iso88591_utf16le($string, $bom=false) {
+		$newcharstring = '';
+		if ($bom) {
+			$newcharstring .= "\xFF\xFE";
+		}
+		for ($i = 0; $i < strlen($string); $i++) {
+			$newcharstring .= $string{$i}."\x00";
+		}
+		return $newcharstring;
+	}
+
+	// ISO-8859-1 => UTF-16LE (BOM)
+	function iconv_fallback_iso88591_utf16($string) {
+		return getid3_lib::iconv_fallback_iso88591_utf16le($string, true);
+	}
+
+	// UTF-8 => ISO-8859-1
+	function iconv_fallback_utf8_iso88591($string) {
+		if (function_exists('utf8_decode')) {
+			return utf8_decode($string);
+		}
+		// utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
+		$newcharstring = '';
+		$offset = 0;
+		$stringlength = strlen($string);
+		while ($offset < $stringlength) {
+			if ((ord($string{$offset}) | 0x07) == 0xF7) {
+				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
+				           ((ord($string{($offset + 1)}) & 0x3F) << 12) &
+				           ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 3)}) & 0x3F);
+				$offset += 4;
+			} elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
+				// 1110bbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
+				           ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 2)}) & 0x3F);
+				$offset += 3;
+			} elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
+				// 110bbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
+				            (ord($string{($offset + 1)}) & 0x3F);
+				$offset += 2;
+			} elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
+				// 0bbbbbbb
+				$charval = ord($string{$offset});
+				$offset += 1;
+			} else {
+				// error? throw some kind of warning here?
+				$charval = false;
+				$offset += 1;
+			}
+			if ($charval !== false) {
+				$newcharstring .= (($charval < 256) ? chr($charval) : '?');
+			}
+		}
+		return $newcharstring;
+	}
+
+	// UTF-8 => UTF-16BE
+	function iconv_fallback_utf8_utf16be($string, $bom=false) {
+		$newcharstring = '';
+		if ($bom) {
+			$newcharstring .= "\xFE\xFF";
+		}
+		$offset = 0;
+		$stringlength = strlen($string);
+		while ($offset < $stringlength) {
+			if ((ord($string{$offset}) | 0x07) == 0xF7) {
+				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
+				           ((ord($string{($offset + 1)}) & 0x3F) << 12) &
+				           ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 3)}) & 0x3F);
+				$offset += 4;
+			} elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
+				// 1110bbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
+				           ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 2)}) & 0x3F);
+				$offset += 3;
+			} elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
+				// 110bbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
+				            (ord($string{($offset + 1)}) & 0x3F);
+				$offset += 2;
+			} elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
+				// 0bbbbbbb
+				$charval = ord($string{$offset});
+				$offset += 1;
+			} else {
+				// error? throw some kind of warning here?
+				$charval = false;
+				$offset += 1;
+			}
+			if ($charval !== false) {
+				$newcharstring .= (($charval < 65536) ? getid3_lib::BigEndian2String($charval, 2) : "\x00".'?');
+			}
+		}
+		return $newcharstring;
+	}
+
+	// UTF-8 => UTF-16LE
+	function iconv_fallback_utf8_utf16le($string, $bom=false) {
+		$newcharstring = '';
+		if ($bom) {
+			$newcharstring .= "\xFF\xFE";
+		}
+		$offset = 0;
+		$stringlength = strlen($string);
+		while ($offset < $stringlength) {
+			if ((ord($string{$offset}) | 0x07) == 0xF7) {
+				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
+				           ((ord($string{($offset + 1)}) & 0x3F) << 12) &
+				           ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 3)}) & 0x3F);
+				$offset += 4;
+			} elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
+				// 1110bbbb 10bbbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
+				           ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
+				            (ord($string{($offset + 2)}) & 0x3F);
+				$offset += 3;
+			} elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
+				// 110bbbbb 10bbbbbb
+				$charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
+				            (ord($string{($offset + 1)}) & 0x3F);
+				$offset += 2;
+			} elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
+				// 0bbbbbbb
+				$charval = ord($string{$offset});
+				$offset += 1;
+			} else {
+				// error? maybe throw some warning here?
+				$charval = false;
+				$offset += 1;
+			}
+			if ($charval !== false) {
+				$newcharstring .= (($charval < 65536) ? getid3_lib::LittleEndian2String($charval, 2) : '?'."\x00");
+			}
+		}
+		return $newcharstring;
+	}
+
+	// UTF-8 => UTF-16LE (BOM)
+	function iconv_fallback_utf8_utf16($string) {
+		return getid3_lib::iconv_fallback_utf8_utf16le($string, true);
+	}
+
+	// UTF-16BE => UTF-8
+	function iconv_fallback_utf16be_utf8($string) {
+		if (substr($string, 0, 2) == "\xFE\xFF") {
+			// strip BOM
+			$string = substr($string, 2);
+		}
+		$newcharstring = '';
+		for ($i = 0; $i < strlen($string); $i += 2) {
+			$charval = getid3_lib::BigEndian2Int(substr($string, $i, 2));
+			$newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval);
+		}
+		return $newcharstring;
+	}
+
+	// UTF-16LE => UTF-8
+	function iconv_fallback_utf16le_utf8($string) {
+		if (substr($string, 0, 2) == "\xFF\xFE") {
+			// strip BOM
+			$string = substr($string, 2);
+		}
+		$newcharstring = '';
+		for ($i = 0; $i < strlen($string); $i += 2) {
+			$charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2));
+			$newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval);
+		}
+		return $newcharstring;
+	}
+
+	// UTF-16BE => ISO-8859-1
+	function iconv_fallback_utf16be_iso88591($string) {
+		if (substr($string, 0, 2) == "\xFE\xFF") {
+			// strip BOM
+			$string = substr($string, 2);
+		}
+		$newcharstring = '';
+		for ($i = 0; $i < strlen($string); $i += 2) {
+			$charval = getid3_lib::BigEndian2Int(substr($string, $i, 2));
+			$newcharstring .= (($charval < 256) ? chr($charval) : '?');
+		}
+		return $newcharstring;
+	}
+
+	// UTF-16LE => ISO-8859-1
+	function iconv_fallback_utf16le_iso88591($string) {
+		if (substr($string, 0, 2) == "\xFF\xFE") {
+			// strip BOM
+			$string = substr($string, 2);
+		}
+		$newcharstring = '';
+		for ($i = 0; $i < strlen($string); $i += 2) {
+			$charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2));
+			$newcharstring .= (($charval < 256) ? chr($charval) : '?');
+		}
+		return $newcharstring;
+	}
+
+	// UTF-16 (BOM) => ISO-8859-1
+	function iconv_fallback_utf16_iso88591($string) {
+		$bom = substr($string, 0, 2);
+		if ($bom == "\xFE\xFF") {
+			return getid3_lib::iconv_fallback_utf16be_iso88591(substr($string, 2));
+		} elseif ($bom == "\xFF\xFE") {
+			return getid3_lib::iconv_fallback_utf16le_iso88591(substr($string, 2));
+		}
+		return $string;
+	}
+
+	// UTF-16 (BOM) => UTF-8
+	function iconv_fallback_utf16_utf8($string) {
+		$bom = substr($string, 0, 2);
+		if ($bom == "\xFE\xFF") {
+			return getid3_lib::iconv_fallback_utf16be_utf8(substr($string, 2));
+		} elseif ($bom == "\xFF\xFE") {
+			return getid3_lib::iconv_fallback_utf16le_utf8(substr($string, 2));
+		}
+		return $string;
+	}
+
+	function iconv_fallback($in_charset, $out_charset, $string) {
+
+		if ($in_charset == $out_charset) {
+			return $string;
+		}
+
+		// iconv() availble
+		if (function_exists('iconv')) {
+
+		    if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
+    			switch ($out_charset) {
+    				case 'ISO-8859-1':
+    					$converted_string = rtrim($converted_string, "\x00");
+    					break;
+    			}
+    			return $converted_string;
+    		}
+
+    		// iconv() may sometimes fail with "illegal character in input string" error message
+    		// and return an empty string, but returning the unconverted string is more useful
+    		return $string;
+    	}
+
+
+        // iconv() not available
+		static $ConversionFunctionList = array();
+		if (empty($ConversionFunctionList)) {
+			$ConversionFunctionList['ISO-8859-1']['UTF-8']    = 'iconv_fallback_iso88591_utf8';
+			$ConversionFunctionList['ISO-8859-1']['UTF-16']   = 'iconv_fallback_iso88591_utf16';
+			$ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
+			$ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
+			$ConversionFunctionList['UTF-8']['ISO-8859-1']    = 'iconv_fallback_utf8_iso88591';
+			$ConversionFunctionList['UTF-8']['UTF-16']        = 'iconv_fallback_utf8_utf16';
+			$ConversionFunctionList['UTF-8']['UTF-16BE']      = 'iconv_fallback_utf8_utf16be';
+			$ConversionFunctionList['UTF-8']['UTF-16LE']      = 'iconv_fallback_utf8_utf16le';
+			$ConversionFunctionList['UTF-16']['ISO-8859-1']   = 'iconv_fallback_utf16_iso88591';
+			$ConversionFunctionList['UTF-16']['UTF-8']        = 'iconv_fallback_utf16_utf8';
+			$ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
+			$ConversionFunctionList['UTF-16LE']['UTF-8']      = 'iconv_fallback_utf16le_utf8';
+			$ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
+			$ConversionFunctionList['UTF-16BE']['UTF-8']      = 'iconv_fallback_utf16be_utf8';
+		}
+		if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
+			$ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
+			return getid3_lib::$ConversionFunction($string);
+		}
+		die('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
+	}
+
+
+	function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
+		$HTMLstring = '';
+
+		switch ($charset) {
+			case 'ISO-8859-1':
+			case 'ISO8859-1':
+			case 'ISO-8859-15':
+			case 'ISO8859-15':
+			case 'cp866':
+			case 'ibm866':
+			case '866':
+			case 'cp1251':
+			case 'Windows-1251':
+			case 'win-1251':
+			case '1251':
+			case 'cp1252':
+			case 'Windows-1252':
+			case '1252':
+			case 'KOI8-R':
+			case 'koi8-ru':
+			case 'koi8r':
+			case 'BIG5':
+			case '950':
+			case 'GB2312':
+			case '936':
+			case 'BIG5-HKSCS':
+			case 'Shift_JIS':
+			case 'SJIS':
+			case '932':
+			case 'EUC-JP':
+			case 'EUCJP':
+				$HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
+				break;
+
+			case 'UTF-8':
+				$strlen = strlen($string);
+				for ($i = 0; $i < $strlen; $i++) {
+					$char_ord_val = ord($string{$i});
+					$charval = 0;
+					if ($char_ord_val < 0x80) {
+						$charval = $char_ord_val;
+					} elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F  &&  $i+3 < $strlen) {
+						$charval  = (($char_ord_val & 0x07) << 18);
+						$charval += ((ord($string{++$i}) & 0x3F) << 12);
+						$charval += ((ord($string{++$i}) & 0x3F) << 6);
+						$charval +=  (ord($string{++$i}) & 0x3F);
+					} elseif ((($char_ord_val & 0xE0) >> 5) == 0x07  &&  $i+2 < $strlen) {
+						$charval  = (($char_ord_val & 0x0F) << 12);
+						$charval += ((ord($string{++$i}) & 0x3F) << 6);
+						$charval +=  (ord($string{++$i}) & 0x3F);
+					} elseif ((($char_ord_val & 0xC0) >> 6) == 0x03  &&  $i+1 < $strlen) {
+						$charval  = (($char_ord_val & 0x1F) << 6);
+						$charval += (ord($string{++$i}) & 0x3F);
+					}
+					if (($charval >= 32) && ($charval <= 127)) {
+						$HTMLstring .= htmlentities(chr($charval));
+					} else {
+						$HTMLstring .= '&#'.$charval.';';
+					}
+				}
+				break;
+
+			case 'UTF-16LE':
+				for ($i = 0; $i < strlen($string); $i += 2) {
+					$charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2));
+					if (($charval >= 32) && ($charval <= 127)) {
+						$HTMLstring .= chr($charval);
+					} else {
+						$HTMLstring .= '&#'.$charval.';';
+					}
+				}
+				break;
+
+			case 'UTF-16BE':
+				for ($i = 0; $i < strlen($string); $i += 2) {
+					$charval = getid3_lib::BigEndian2Int(substr($string, $i, 2));
+					if (($charval >= 32) && ($charval <= 127)) {
+						$HTMLstring .= chr($charval);
+					} else {
+						$HTMLstring .= '&#'.$charval.';';
+					}
+				}
+				break;
+
+			default:
+				$HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
+				break;
+		}
+		return $HTMLstring;
+	}
+
+
+
+	function RGADnameLookup($namecode) {
+		static $RGADname = array();
+		if (empty($RGADname)) {
+			$RGADname[0] = 'not set';
+			$RGADname[1] = 'Track Gain Adjustment';
+			$RGADname[2] = 'Album Gain Adjustment';
+		}
+
+		return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
+	}
+
+
+	function RGADoriginatorLookup($originatorcode) {
+		static $RGADoriginator = array();
+		if (empty($RGADoriginator)) {
+			$RGADoriginator[0] = 'unspecified';
+			$RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
+			$RGADoriginator[2] = 'set by user';
+			$RGADoriginator[3] = 'determined automatically';
+		}
+
+		return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
+	}
+
+
+	function RGADadjustmentLookup($rawadjustment, $signbit) {
+		$adjustment = $rawadjustment / 10;
+		if ($signbit == 1) {
+			$adjustment *= -1;
+		}
+		return (float) $adjustment;
+	}
+
+
+	function RGADgainString($namecode, $originatorcode, $replaygain) {
+		if ($replaygain < 0) {
+			$signbit = '1';
+		} else {
+			$signbit = '0';
+		}
+		$storedreplaygain = intval(round($replaygain * 10));
+		$gainstring  = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
+		$gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
+		$gainstring .= $signbit;
+		$gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);
+
+		return $gainstring;
+	}
+
+	function RGADamplitude2dB($amplitude) {
+		return 20 * log10($amplitude);
+	}
+
+
+	function GetDataImageSize($imgData, &$imageinfo) {
+		$GetDataImageSize = false;
+		if ($tempfilename = tempnam('*', 'getID3')) {
+			if ($tmp = @fopen($tempfilename, 'wb')) {
+				fwrite($tmp, $imgData);
+				fclose($tmp);
+				$GetDataImageSize = @GetImageSize($tempfilename, $imageinfo);
+			}
+			unlink($tempfilename);
+		}
+		return $GetDataImageSize;
+	}
+
+	function ImageTypesLookup($imagetypeid) {
+		static $ImageTypesLookup = array();
+		if (empty($ImageTypesLookup)) {
+			$ImageTypesLookup[1]  = 'gif';
+			$ImageTypesLookup[2]  = 'jpeg';
+			$ImageTypesLookup[3]  = 'png';
+			$ImageTypesLookup[4]  = 'swf';
+			$ImageTypesLookup[5]  = 'psd';
+			$ImageTypesLookup[6]  = 'bmp';
+			$ImageTypesLookup[7]  = 'tiff (little-endian)';
+			$ImageTypesLookup[8]  = 'tiff (big-endian)';
+			$ImageTypesLookup[9]  = 'jpc';
+			$ImageTypesLookup[10] = 'jp2';
+			$ImageTypesLookup[11] = 'jpx';
+			$ImageTypesLookup[12] = 'jb2';
+			$ImageTypesLookup[13] = 'swc';
+			$ImageTypesLookup[14] = 'iff';
+		}
+		return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
+	}
+
+	function CopyTagsToComments(&$ThisFileInfo) {
+
+		// Copy all entries from ['tags'] into common ['comments']
+		if (!empty($ThisFileInfo['tags'])) {
+			foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
+				foreach ($tagarray as $tagname => $tagdata) {
+					foreach ($tagdata as $key => $value) {
+						if (!empty($value)) {
+							if (empty($ThisFileInfo['comments'][$tagname])) {
+
+								// fall through and append value
+
+							} elseif ($tagtype == 'id3v1') {
+
+								$newvaluelength = strlen(trim($value));
+								foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
+									$oldvaluelength = strlen(trim($existingvalue));
+									if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
+										// new value is identical but shorter-than (or equal-length to) one already in comments - skip
+										break 2;
+									}
+								}
+
+							} else {
+
+								$newvaluelength = strlen(trim($value));
+								foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
+									$oldvaluelength = strlen(trim($existingvalue));
+									if (($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
+										$ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
+										break 2;
+									}
+								}
+
+							}
+							if (empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
+								$ThisFileInfo['comments'][$tagname][] = trim($value);
+							}
+						}
+					}
+				}
+			}
+
+			// Copy to ['comments_html']
+    		foreach ($ThisFileInfo['comments'] as $field => $values) {
+    		    foreach ($values as $index => $value) {
+    		        $ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;', '', getid3_lib::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
+    		    }
+            }
+		}
+	}
+
+
+	function EmbeddedLookup($key, $begin, $end, $file, $name) {
+
+		// Cached
+		static $cache;
+		if (isset($cache[$file][$name])) {
+			return @$cache[$file][$name][$key];
+		}
+
+		// Init
+		$keylength  = strlen($key);
+		$line_count = $end - $begin - 7;
+
+		// Open php file
+		$fp = fopen($file, 'r');
+
+		// Discard $begin lines
+		for ($i = 0; $i < ($begin + 3); $i++) {
+			fgets($fp, 1024);
+		}
+
+		// Loop thru line
+		while (0 < $line_count--) {
+
+			// Read line
+			$line = ltrim(fgets($fp, 1024), "\t ");
+
+			// METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
+			//$keycheck = substr($line, 0, $keylength);
+			//if ($key == $keycheck)  {
+			//	$cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
+			//	break;
+			//}
+
+			// METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
+			//$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
+			@list($ThisKey, $ThisValue) = explode("\t", $line, 2);
+			$cache[$file][$name][$ThisKey] = trim($ThisValue);
+		}
+
+		// Close and return
+		fclose($fp);
+		return @$cache[$file][$name][$key];
+	}
+
+	function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
+		global $GETID3_ERRORARRAY;
+
+		if (file_exists($filename)) {
+			if (@include_once($filename)) {
+				return true;
+			} else {
+				$diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
+			}
+		} else {
+			$diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
+		}
+		if ($DieOnFailure) {
+			die($diemessage);
+		} else {
+			$GETID3_ERRORARRAY[] = $diemessage;
+		}
+		return false;
+	}
+
+}
+
+?>
\ No newline at end of file