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WordPress/wp-includes/ID3/getid3.lib.php

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<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
// also https://github.com/JamesHeinrich/getID3 //
/////////////////////////////////////////////////////////////////
// //
// getid3.lib.php - part of getID3() //
// See readme.txt for more details //
// ///
/////////////////////////////////////////////////////////////////
class getid3_lib
{
public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
$returnstring = '';
for ($i = 0; $i < strlen($string); $i++) {
if ($hex) {
$returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
} else {
$returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : '¤');
}
if ($spaces) {
$returnstring .= ' ';
}
}
if (!empty($htmlencoding)) {
if ($htmlencoding === true) {
$htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
}
$returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
}
return $returnstring;
}
public static function trunc($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 {
$truncatednumber = 0;
}
if (self::intValueSupported($truncatednumber)) {
$truncatednumber = (int) $truncatednumber;
}
return $truncatednumber;
}
public static function safe_inc(&$variable, $increment=1) {
if (isset($variable)) {
$variable += $increment;
} else {
$variable = $increment;
}
return true;
}
public static function CastAsInt($floatnum) {
// convert to float if not already
$floatnum = (float) $floatnum;
// convert a float to type int, only if possible
if (self::trunc($floatnum) == $floatnum) {
// it's not floating point
if (self::intValueSupported($floatnum)) {
// it's within int range
$floatnum = (int) $floatnum;
}
}
return $floatnum;
}
public static function intValueSupported($num) {
// check if integers are 64-bit
static $hasINT64 = null;
if ($hasINT64 === null) { // 10x faster than is_null()
$hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
if (!$hasINT64 && !defined('PHP_INT_MIN')) {
define('PHP_INT_MIN', ~PHP_INT_MAX);
}
}
// if integers are 64-bit - no other check required
if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
return true;
}
return false;
}
public static function DecimalizeFraction($fraction) {
list($numerator, $denominator) = explode('/', $fraction);
return $numerator / ($denominator ? $denominator : 1);
}
public static function DecimalBinary2Float($binarynumerator) {
$numerator = self::Bin2Dec($binarynumerator);
$denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
return ($numerator / $denominator);
}
public static function NormalizeBinaryPoint($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) $exponent);
}
public static function Float2BinaryDecimal($floatvalue) {
// http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
$maxbits = 128; // to how many bits of precision should the calculations be taken?
$intpart = self::trunc($floatvalue);
$floatpart = abs($floatvalue - $intpart);
$pointbitstring = '';
while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
$floatpart *= 2;
$pointbitstring .= (string) self::trunc($floatpart);
$floatpart -= self::trunc($floatpart);
}
$binarypointnumber = decbin($intpart).'.'.$pointbitstring;
return $binarypointnumber;
}
public static function Float2String($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';
}
$normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($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), $fractionbits, '0', STR_PAD_RIGHT);
return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
}
public static function LittleEndian2Float($byteword) {
return self::BigEndian2Float(strrev($byteword));
}
public static function BigEndian2Float($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
$bitword = self::BigEndian2Bin($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);
$exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
$fraction = $isnormalized + self::DecimalBinary2Float($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);
$exponent = self::Bin2Dec($exponentstring);
$fraction = self::Bin2Dec($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, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
if ($signbit == '1') {
$floatvalue *= -1;
}
} elseif ($exponent != 0) {
$floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
if ($signbit == '1') {
$floatvalue *= -1;
}
}
return (float) $floatvalue;
}
public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
$intvalue = 0;
$bytewordlen = strlen($byteword);
if ($bytewordlen == 0) {
return false;
}
for ($i = 0; $i < $bytewordlen; $i++) {
if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
//$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
$intvalue += (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
} else {
$intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
}
}
if ($signed && !$synchsafe) {
// synchsafe ints are not allowed to be signed
if ($bytewordlen <= PHP_INT_SIZE) {
$signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
if ($intvalue & $signMaskBit) {
$intvalue = 0 - ($intvalue & ($signMaskBit - 1));
}
} else {
throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
}
}
return self::CastAsInt($intvalue);
}
public static function LittleEndian2Int($byteword, $signed=false) {
return self::BigEndian2Int(strrev($byteword), false, $signed);
}
public static function BigEndian2Bin($byteword) {
$binvalue = '';
$bytewordlen = strlen($byteword);
for ($i = 0; $i < $bytewordlen; $i++) {
$binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT);
}
return $binvalue;
}
public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
if ($number < 0) {
throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
}
$maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
$intstring = '';
if ($signed) {
if ($minbytes > PHP_INT_SIZE) {
throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::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, $minbytes, "\x00", STR_PAD_LEFT);
}
public static function Dec2Bin($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 $binstring;
}
public static function Bin2Dec($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, $i);
}
return self::CastAsInt($decvalue * $signmult);
}
public static function Bin2String($binstring) {
// return 'hi' for input of '0110100001101001'
$string = '';
$binstringreversed = strrev($binstring);
for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
$string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
}
return $string;
}
public static function LittleEndian2String($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, $minbytes, "\x00", STR_PAD_RIGHT);
}
public static function array_merge_clobber($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] = self::array_merge_clobber($newarray[$key], $val);
} else {
$newarray[$key] = $val;
}
}
return $newarray;
}
public static function array_merge_noclobber($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] = self::array_merge_noclobber($newarray[$key], $val);
} elseif (!isset($newarray[$key])) {
$newarray[$key] = $val;
}
}
return $newarray;
}
public static function ksort_recursive(&$theArray) {
ksort($theArray);
foreach ($theArray as $key => $value) {
if (is_array($value)) {
self::ksort_recursive($theArray[$key]);
}
}
return true;
}
public static 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, $offset));
}
return '';
}
public static function PlaytimeString($seconds) {
$sign = (($seconds < 0) ? '-' : '');
$seconds = round(abs($seconds));
$H = (int) floor( $seconds / 3600);
$M = (int) floor(($seconds - (3600 * $H) ) / 60);
$S = (int) round( $seconds - (3600 * $H) - (60 * $M) );
return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT);
}
public static function DateMac2Unix($macdate) {
// Macintosh timestamp: seconds since 00:00h January 1, 1904
// UNIX timestamp: seconds since 00:00h January 1, 1970
return self::CastAsInt($macdate - 2082844800);
}
public static function FixedPoint8_8($rawdata) {
return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
}
public static function FixedPoint16_16($rawdata) {
return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
}
public static function FixedPoint2_30($rawdata) {
$binarystring = self::BigEndian2Bin($rawdata);
return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
}
public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
// assigns $Value to a nested array path:
// $foo = self::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';
$ArrayPath = ltrim($ArrayPath, $Separator);
if (($pos = strpos($ArrayPath, $Separator)) !== false) {
$ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
} else {
$ReturnedArray[$ArrayPath] = $Value;
}
return $ReturnedArray;
}
public static function array_max($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 : $maxvalue);
}
public static function array_min($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 : $minvalue);
}
public static function XML2array($XMLstring) {
if ( function_exists( 'simplexml_load_string' ) && function_exists( 'libxml_disable_entity_loader' ) ) {
$loader = libxml_disable_entity_loader( true );
$XMLobject = simplexml_load_string( $XMLstring, 'SimpleXMLElement', LIBXML_NOENT );
$return = self::SimpleXMLelement2array( $XMLobject );
libxml_disable_entity_loader( $loader );
return $return;
}
return false;
}
public static function SimpleXMLelement2array($XMLobject) {
if (!is_object($XMLobject) && !is_array($XMLobject)) {
return $XMLobject;
}
$XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
foreach ($XMLarray as $key => $value) {
$XMLarray[$key] = self::SimpleXMLelement2array($value);
}
return $XMLarray;
}
// Allan Hansen <ahØartemis*dk>
// self::md5_data() - returns md5sum for a file from startuing position to absolute end position
public static function hash_data($file, $offset, $end, $algorithm) {
static $tempdir = '';
if (!self::intValueSupported($end)) {
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';
$hash_length = 40;
break;
default:
throw new Exception('Invalid algorithm ('.$algorithm.') in self::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 2;
}
}
$commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$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 .= $unix_call;
}
if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
//throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
break;
}
return substr(`$commandline`, 0, $hash_length);
}
if (empty($tempdir)) {
// yes this is ugly, feel free to suggest a better way
require_once(dirname(__FILE__).'/getid3.php');
$getid3_temp = new getID3();
$tempdir = $getid3_temp->tempdir;
unset($getid3_temp);
}
// try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
// can't find anywhere to create a temp file, just fail
return false;
}
// Init
$result = false;
// copy parts of file
try {
self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
$result = $hash_function($data_filename);
} catch (Exception $e) {
throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
}
unlink($data_filename);
return $result;
}
public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
if (!self::intValueSupported($offset + $length)) {
throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit');
}
if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
if (($fp_dest = fopen($filename_dest, 'wb'))) {
if (fseek($fp_src, $offset) == 0) {
$byteslefttowrite = $length;
while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
$byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
$byteslefttowrite -= $byteswritten;
}
return true;
} else {
throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
}
fclose($fp_dest);
} else {
throw new Exception('failed to create file for writing '.$filename_dest);
}
fclose($fp_src);
} else {
throw new Exception('failed to open file for reading '.$filename_source);
}
return false;
}
public static function iconv_fallback_int_utf8($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 $newcharstring;
}
// ISO-8859-1 => UTF-8
public static function iconv_fallback_iso88591_utf8($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});
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
// ISO-8859-1 => UTF-16BE
public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
$newcharstring = '';
if ($bom) {
$newcharstring .= "\xFE\xFF";
}
for ($i = 0; $i < strlen($string); $i++) {
$newcharstring .= "\x00".$string{$i};
}
return $newcharstring;
}
// ISO-8859-1 => UTF-16LE
public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
$newcharstring = '';
if ($bom) {
$newcharstring .= "\xFF\xFE";
}
for ($i = 0; $i < strlen($string); $i++) {
$newcharstring .= $string{$i}."\x00";
}
return $newcharstring;
}
// ISO-8859-1 => UTF-16LE (BOM)
public static function iconv_fallback_iso88591_utf16($string) {
return self::iconv_fallback_iso88591_utf16le($string, true);
}
// UTF-8 => ISO-8859-1
public static function iconv_fallback_utf8_iso88591($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 $newcharstring;
}
// UTF-8 => UTF-16BE
public static function iconv_fallback_utf8_utf16be($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) ? self::BigEndian2String($charval, 2) : "\x00".'?');
}
}
return $newcharstring;
}
// UTF-8 => UTF-16LE
public static function iconv_fallback_utf8_utf16le($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) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
}
}
return $newcharstring;
}
// UTF-8 => UTF-16LE (BOM)
public static function iconv_fallback_utf8_utf16($string) {
return self::iconv_fallback_utf8_utf16le($string, true);
}
// UTF-16BE => UTF-8
public static function iconv_fallback_utf16be_utf8($string) {
if (substr($string, 0, 2) == "\xFE\xFF") {
// strip BOM
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::BigEndian2Int(substr($string, $i, 2));
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
// UTF-16LE => UTF-8
public static function iconv_fallback_utf16le_utf8($string) {
if (substr($string, 0, 2) == "\xFF\xFE") {
// strip BOM
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::LittleEndian2Int(substr($string, $i, 2));
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
// UTF-16BE => ISO-8859-1
public static function iconv_fallback_utf16be_iso88591($string) {
if (substr($string, 0, 2) == "\xFE\xFF") {
// strip BOM
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::BigEndian2Int(substr($string, $i, 2));
$newcharstring .= (($charval < 256) ? chr($charval) : '?');
}
return $newcharstring;
}
// UTF-16LE => ISO-8859-1
public static function iconv_fallback_utf16le_iso88591($string) {
if (substr($string, 0, 2) == "\xFF\xFE") {
// strip BOM
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::LittleEndian2Int(substr($string, $i, 2));
$newcharstring .= (($charval < 256) ? chr($charval) : '?');
}
return $newcharstring;
}
// UTF-16 (BOM) => ISO-8859-1
public static function iconv_fallback_utf16_iso88591($string) {
$bom = substr($string, 0, 2);
if ($bom == "\xFE\xFF") {
return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
} elseif ($bom == "\xFF\xFE") {
return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
}
return $string;
}
// UTF-16 (BOM) => UTF-8
public static function iconv_fallback_utf16_utf8($string) {
$bom = substr($string, 0, 2);
if ($bom == "\xFE\xFF") {
return self::iconv_fallback_utf16be_utf8(substr($string, 2));
} elseif ($bom == "\xFF\xFE") {
return self::iconv_fallback_utf16le_utf8(substr($string, 2));
}
return $string;
}
public static function iconv_fallback($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($out_charset)];
return self::$ConversionFunction($string);
}
throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
}
public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') {
if (is_string($data)) {
return self::MultiByteCharString2HTML($data, $charset);
} elseif (is_array($data)) {
$return_data = array();
foreach ($data as $key => $value) {
$return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset);
}
return $return_data;
}
// integer, float, objects, resources, etc
return $data;
}
public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
$string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
$HTMLstring = '';
switch ($charset) {
case '1251':
case '1252':
case '866':
case '932':
case '936':
case '950':
case 'BIG5':
case 'BIG5-HKSCS':
case 'cp1251':
case 'cp1252':
case 'cp866':
case 'EUC-JP':
case 'EUCJP':
case 'GB2312':
case 'ibm866':
case 'ISO-8859-1':
case 'ISO-8859-15':
case 'ISO8859-1':
case 'ISO8859-15':
case 'KOI8-R':
case 'koi8-ru':
case 'koi8r':
case 'Shift_JIS':
case 'SJIS':
case 'win-1251':
case 'Windows-1251':
case 'Windows-1252':
$HTMLstring = htmlentities($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) {
$charval = self::LittleEndian2Int(substr($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) {
$charval = self::BigEndian2Int(substr($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 $HTMLstring;
}
public static function RGADnameLookup($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] : '');
}
public static 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] : '');
}
public static function RGADadjustmentLookup($rawadjustment, $signbit) {
$adjustment = $rawadjustment / 10;
if ($signbit == 1) {
$adjustment *= -1;
}
return (float) $adjustment;
}
public static function RGADgainString($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 $gainstring;
}
public static function RGADamplitude2dB($amplitude) {
return 20 * log10($amplitude);
}
public static function GetDataImageSize($imgData, &$imageinfo=array()) {
static $tempdir = '';
if (empty($tempdir)) {
// yes this is ugly, feel free to suggest a better way
require_once(dirname(__FILE__).'/getid3.php');
$getid3_temp = new getID3();
$tempdir = $getid3_temp->tempdir;
unset($getid3_temp);
}
$GetDataImageSize = false;
if ($tempfilename = tempnam($tempdir, 'gI3')) {
if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
fwrite($tmp, $imgData);
fclose($tmp);
$GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
}
unlink($tempfilename);
}
return $GetDataImageSize;
}
public static function ImageExtFromMime($mime_type) {
// temporary way, works OK for now, but should be reworked in the future
return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
}
public static function ImageTypesLookup($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] : '');
}
public static 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;
}
}
} elseif (!is_array($value)) {
$newvaluelength = strlen(trim($value));
foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
$oldvaluelength = strlen(trim($existingvalue));
if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
$ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
//break 2;
break;
}
}
}
if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
$value = (is_string($value) ? trim($value) : $value);
if (!is_numeric($key)) {
$ThisFileInfo['comments'][$tagname][$key] = $value;
} else {
$ThisFileInfo['comments'][$tagname][] = $value;
}
}
}
}
}
}
// Copy to ['comments_html']
if (!empty($ThisFileInfo['comments'])) {
foreach ($ThisFileInfo['comments'] as $field => $values) {
if ($field == 'picture') {
// pictures can take up a lot of space, and we don't need multiple copies of them
// let there be a single copy in [comments][picture], and not elsewhere
continue;
}
foreach ($values as $index => $value) {
if (is_array($value)) {
$ThisFileInfo['comments_html'][$field][$index] = $value;
} else {
$ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
}
}
}
}
}
return true;
}
public static function EmbeddedLookup($key, $begin, $end, $file, $name) {
// Cached
static $cache;
if (isset($cache[$file][$name])) {
return (isset($cache[$file][$name][$key]) ? $cache[$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));
$explodedLine = explode("\t", $line, 2);
$ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : '');
$ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
$cache[$file][$name][$ThisKey] = trim($ThisValue);
}
// Close and return
fclose($fp);
return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
}
public static 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) {
throw new Exception($diemessage);
} else {
$GETID3_ERRORARRAY[] = $diemessage;
}
return false;
}
public static function trimNullByte($string) {
return trim($string, "\x00");
}
public static function getFileSizeSyscall($path) {
$filesize = false;
if (GETID3_OS_ISWINDOWS) {
if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini:
$filesystem = new COM('Scripting.FileSystemObject');
$file = $filesystem->GetFile($path);
$filesize = $file->Size();
unset($filesystem, $file);
} else {
$commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
}
} else {
$commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
}
if (isset($commandline)) {
$output = trim(`$commandline`);
if (ctype_digit($output)) {
$filesize = (float) $output;
}
}
return $filesize;
}
/**
* Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268)
* @param string $path A path.
* @param string $suffix If the name component ends in suffix this will also be cut off.
* @return string
*/
public static function mb_basename($path, $suffix = null) {
$splited = preg_split('#/#', rtrim($path, '/ '));
return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1);
}
}
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