2 /////////////////////////////////////////////////////////////////
3 /// getID3() by James Heinrich <info@getid3.org> //
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
6 // also https://github.com/JamesHeinrich/getID3 //
7 /////////////////////////////////////////////////////////////////
9 // getid3.lib.php - part of getID3() //
10 // See readme.txt for more details //
12 /////////////////////////////////////////////////////////////////
18 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
20 for ($i = 0; $i < strlen($string); $i++) {
22 $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
24 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : 'ยค');
30 if (!empty($htmlencoding)) {
31 if ($htmlencoding === true) {
32 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
34 $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
39 public static function trunc($floatnumber) {
40 // truncates a floating-point number at the decimal point
41 // returns int (if possible, otherwise float)
42 if ($floatnumber >= 1) {
43 $truncatednumber = floor($floatnumber);
44 } elseif ($floatnumber <= -1) {
45 $truncatednumber = ceil($floatnumber);
49 if (self::intValueSupported($truncatednumber)) {
50 $truncatednumber = (int) $truncatednumber;
52 return $truncatednumber;
56 public static function safe_inc(&$variable, $increment=1) {
57 if (isset($variable)) {
58 $variable += $increment;
60 $variable = $increment;
65 public static function CastAsInt($floatnum) {
66 // convert to float if not already
67 $floatnum = (float) $floatnum;
69 // convert a float to type int, only if possible
70 if (self::trunc($floatnum) == $floatnum) {
71 // it's not floating point
72 if (self::intValueSupported($floatnum)) {
73 // it's within int range
74 $floatnum = (int) $floatnum;
80 public static function intValueSupported($num) {
81 // check if integers are 64-bit
82 static $hasINT64 = null;
83 if ($hasINT64 === null) { // 10x faster than is_null()
84 $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
85 if (!$hasINT64 && !defined('PHP_INT_MIN')) {
86 define('PHP_INT_MIN', ~PHP_INT_MAX);
89 // if integers are 64-bit - no other check required
90 if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
96 public static function DecimalizeFraction($fraction) {
97 list($numerator, $denominator) = explode('/', $fraction);
98 return $numerator / ($denominator ? $denominator : 1);
102 public static function DecimalBinary2Float($binarynumerator) {
103 $numerator = self::Bin2Dec($binarynumerator);
104 $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
105 return ($numerator / $denominator);
109 public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
110 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
111 if (strpos($binarypointnumber, '.') === false) {
112 $binarypointnumber = '0.'.$binarypointnumber;
113 } elseif ($binarypointnumber{0} == '.') {
114 $binarypointnumber = '0'.$binarypointnumber;
117 while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
118 if (substr($binarypointnumber, 1, 1) == '.') {
120 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
122 $pointpos = strpos($binarypointnumber, '.');
123 $exponent += ($pointpos - 1);
124 $binarypointnumber = str_replace('.', '', $binarypointnumber);
125 $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1);
128 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
129 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
133 public static function Float2BinaryDecimal($floatvalue) {
134 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
135 $maxbits = 128; // to how many bits of precision should the calculations be taken?
136 $intpart = self::trunc($floatvalue);
137 $floatpart = abs($floatvalue - $intpart);
138 $pointbitstring = '';
139 while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
141 $pointbitstring .= (string) self::trunc($floatpart);
142 $floatpart -= self::trunc($floatpart);
144 $binarypointnumber = decbin($intpart).'.'.$pointbitstring;
145 return $binarypointnumber;
149 public static function Float2String($floatvalue, $bits) {
150 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
166 if ($floatvalue >= 0) {
171 $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
172 $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
173 $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
174 $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
176 return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
180 public static function LittleEndian2Float($byteword) {
181 return self::BigEndian2Float(strrev($byteword));
185 public static function BigEndian2Float($byteword) {
186 // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
187 // http://www.psc.edu/general/software/packages/ieee/ieee.html
188 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
190 $bitword = self::BigEndian2Bin($byteword);
194 $signbit = $bitword{0};
196 switch (strlen($byteword) * 8) {
208 // 80-bit Apple SANE format
209 // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
210 $exponentstring = substr($bitword, 1, 15);
211 $isnormalized = intval($bitword{16});
212 $fractionstring = substr($bitword, 17, 63);
213 $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
214 $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
215 $floatvalue = $exponent * $fraction;
216 if ($signbit == '1') {
226 $exponentstring = substr($bitword, 1, $exponentbits);
227 $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
228 $exponent = self::Bin2Dec($exponentstring);
229 $fraction = self::Bin2Dec($fractionstring);
231 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
234 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
235 if ($signbit == '1') {
236 $floatvalue = '-infinity';
238 $floatvalue = '+infinity';
240 } elseif (($exponent == 0) && ($fraction == 0)) {
241 if ($signbit == '1') {
246 $floatvalue = ($signbit ? 0 : -0);
247 } elseif (($exponent == 0) && ($fraction != 0)) {
248 // These are 'unnormalized' values
249 $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
250 if ($signbit == '1') {
253 } elseif ($exponent != 0) {
254 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
255 if ($signbit == '1') {
259 return (float) $floatvalue;
263 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
265 $bytewordlen = strlen($byteword);
266 if ($bytewordlen == 0) {
269 for ($i = 0; $i < $bytewordlen; $i++) {
270 if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
271 //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
272 $intvalue += (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
274 $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
277 if ($signed && !$synchsafe) {
278 // synchsafe ints are not allowed to be signed
279 if ($bytewordlen <= PHP_INT_SIZE) {
280 $signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
281 if ($intvalue & $signMaskBit) {
282 $intvalue = 0 - ($intvalue & ($signMaskBit - 1));
285 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
288 return self::CastAsInt($intvalue);
292 public static function LittleEndian2Int($byteword, $signed=false) {
293 return self::BigEndian2Int(strrev($byteword), false, $signed);
297 public static function BigEndian2Bin($byteword) {
299 $bytewordlen = strlen($byteword);
300 for ($i = 0; $i < $bytewordlen; $i++) {
301 $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT);
307 public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
309 throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
311 $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
314 if ($minbytes > PHP_INT_SIZE) {
315 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()');
317 $number = $number & (0x80 << (8 * ($minbytes - 1)));
319 while ($number != 0) {
320 $quotient = ($number / ($maskbyte + 1));
321 $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
322 $number = floor($quotient);
324 return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
328 public static function Dec2Bin($number) {
329 while ($number >= 256) {
330 $bytes[] = (($number / 256) - (floor($number / 256))) * 256;
331 $number = floor($number / 256);
335 for ($i = 0; $i < count($bytes); $i++) {
336 $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring;
342 public static function Bin2Dec($binstring, $signed=false) {
345 if ($binstring{0} == '1') {
348 $binstring = substr($binstring, 1);
351 for ($i = 0; $i < strlen($binstring); $i++) {
352 $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
354 return self::CastAsInt($decvalue * $signmult);
358 public static function Bin2String($binstring) {
359 // return 'hi' for input of '0110100001101001'
361 $binstringreversed = strrev($binstring);
362 for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
363 $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
369 public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
371 while ($number > 0) {
373 $intstring = $intstring.chr($number & 127);
376 $intstring = $intstring.chr($number & 255);
380 return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
384 public static function array_merge_clobber($array1, $array2) {
385 // written by kcรhireability*com
386 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php
387 if (!is_array($array1) || !is_array($array2)) {
391 foreach ($array2 as $key => $val) {
392 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
393 $newarray[$key] = self::array_merge_clobber($newarray[$key], $val);
395 $newarray[$key] = $val;
402 public static function array_merge_noclobber($array1, $array2) {
403 if (!is_array($array1) || !is_array($array2)) {
407 foreach ($array2 as $key => $val) {
408 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
409 $newarray[$key] = self::array_merge_noclobber($newarray[$key], $val);
410 } elseif (!isset($newarray[$key])) {
411 $newarray[$key] = $val;
418 public static function ksort_recursive(&$theArray) {
420 foreach ($theArray as $key => $value) {
421 if (is_array($value)) {
422 self::ksort_recursive($theArray[$key]);
428 public static function fileextension($filename, $numextensions=1) {
429 if (strstr($filename, '.')) {
430 $reversedfilename = strrev($filename);
432 for ($i = 0; $i < $numextensions; $i++) {
433 $offset = strpos($reversedfilename, '.', $offset + 1);
434 if ($offset === false) {
438 return strrev(substr($reversedfilename, 0, $offset));
444 public static function PlaytimeString($seconds) {
445 $sign = (($seconds < 0) ? '-' : '');
446 $seconds = round(abs($seconds));
447 $H = (int) floor( $seconds / 3600);
448 $M = (int) floor(($seconds - (3600 * $H) ) / 60);
449 $S = (int) round( $seconds - (3600 * $H) - (60 * $M) );
450 return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT);
454 public static function DateMac2Unix($macdate) {
455 // Macintosh timestamp: seconds since 00:00h January 1, 1904
456 // UNIX timestamp: seconds since 00:00h January 1, 1970
457 return self::CastAsInt($macdate - 2082844800);
461 public static function FixedPoint8_8($rawdata) {
462 return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
466 public static function FixedPoint16_16($rawdata) {
467 return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
471 public static function FixedPoint2_30($rawdata) {
472 $binarystring = self::BigEndian2Bin($rawdata);
473 return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
477 public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
478 // assigns $Value to a nested array path:
479 // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt')
481 // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
483 // $foo['path']['to']['my'] = 'file.txt';
484 $ArrayPath = ltrim($ArrayPath, $Separator);
485 if (($pos = strpos($ArrayPath, $Separator)) !== false) {
486 $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
488 $ReturnedArray[$ArrayPath] = $Value;
490 return $ReturnedArray;
493 public static function array_max($arraydata, $returnkey=false) {
496 foreach ($arraydata as $key => $value) {
497 if (!is_array($value)) {
498 if ($value > $maxvalue) {
504 return ($returnkey ? $maxkey : $maxvalue);
507 public static function array_min($arraydata, $returnkey=false) {
510 foreach ($arraydata as $key => $value) {
511 if (!is_array($value)) {
512 if ($value > $minvalue) {
518 return ($returnkey ? $minkey : $minvalue);
521 public static function XML2array($XMLstring) {
522 if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
523 // http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
524 // https://core.trac.wordpress.org/changeset/29378
525 $loader = libxml_disable_entity_loader(true);
526 $XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT);
527 $return = self::SimpleXMLelement2array($XMLobject);
528 libxml_disable_entity_loader($loader);
534 public static function SimpleXMLelement2array($XMLobject) {
535 if (!is_object($XMLobject) && !is_array($XMLobject)) {
538 $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
539 foreach ($XMLarray as $key => $value) {
540 $XMLarray[$key] = self::SimpleXMLelement2array($value);
546 // Allan Hansen <ahรartemis*dk>
547 // self::md5_data() - returns md5sum for a file from startuing position to absolute end position
548 public static function hash_data($file, $offset, $end, $algorithm) {
549 static $tempdir = '';
550 if (!self::intValueSupported($end)) {
553 switch ($algorithm) {
555 $hash_function = 'md5_file';
556 $unix_call = 'md5sum';
557 $windows_call = 'md5sum.exe';
562 $hash_function = 'sha1_file';
563 $unix_call = 'sha1sum';
564 $windows_call = 'sha1sum.exe';
569 throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()');
572 $size = $end - $offset;
574 if (GETID3_OS_ISWINDOWS) {
576 // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
577 // Fall back to create-temp-file method:
578 if ($algorithm == 'sha1') {
582 $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
583 foreach ($RequiredFiles as $required_file) {
584 if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
585 // helper apps not available - fall back to old method
589 $commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' | ';
590 $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | ';
591 $commandline .= GETID3_HELPERAPPSDIR.$windows_call;
595 $commandline = 'head -c'.$end.' '.escapeshellarg($file).' | ';
596 $commandline .= 'tail -c'.$size.' | ';
597 $commandline .= $unix_call;
600 if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
601 //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
604 return substr(`$commandline`, 0, $hash_length);
607 if (empty($tempdir)) {
608 // yes this is ugly, feel free to suggest a better way
609 require_once(dirname(__FILE__).'/getid3.php');
610 $getid3_temp = new getID3();
611 $tempdir = $getid3_temp->tempdir;
614 // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
615 if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
616 // can't find anywhere to create a temp file, just fail
623 // copy parts of file
625 self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
626 $result = $hash_function($data_filename);
627 } catch (Exception $e) {
628 throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
630 unlink($data_filename);
634 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
635 if (!self::intValueSupported($offset + $length)) {
636 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit');
638 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
639 if (($fp_dest = fopen($filename_dest, 'wb'))) {
640 if (fseek($fp_src, $offset) == 0) {
641 $byteslefttowrite = $length;
642 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
643 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
644 $byteslefttowrite -= $byteswritten;
648 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
652 throw new Exception('failed to create file for writing '.$filename_dest);
656 throw new Exception('failed to open file for reading '.$filename_source);
661 public static function iconv_fallback_int_utf8($charval) {
662 if ($charval < 128) {
664 $newcharstring = chr($charval);
665 } elseif ($charval < 2048) {
667 $newcharstring = chr(($charval >> 6) | 0xC0);
668 $newcharstring .= chr(($charval & 0x3F) | 0x80);
669 } elseif ($charval < 65536) {
670 // 1110bbbb 10bbbbbb 10bbbbbb
671 $newcharstring = chr(($charval >> 12) | 0xE0);
672 $newcharstring .= chr(($charval >> 6) | 0xC0);
673 $newcharstring .= chr(($charval & 0x3F) | 0x80);
675 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
676 $newcharstring = chr(($charval >> 18) | 0xF0);
677 $newcharstring .= chr(($charval >> 12) | 0xC0);
678 $newcharstring .= chr(($charval >> 6) | 0xC0);
679 $newcharstring .= chr(($charval & 0x3F) | 0x80);
681 return $newcharstring;
684 // ISO-8859-1 => UTF-8
685 public static function iconv_fallback_iso88591_utf8($string, $bom=false) {
686 if (function_exists('utf8_encode')) {
687 return utf8_encode($string);
689 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
692 $newcharstring .= "\xEF\xBB\xBF";
694 for ($i = 0; $i < strlen($string); $i++) {
695 $charval = ord($string{$i});
696 $newcharstring .= self::iconv_fallback_int_utf8($charval);
698 return $newcharstring;
701 // ISO-8859-1 => UTF-16BE
702 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
705 $newcharstring .= "\xFE\xFF";
707 for ($i = 0; $i < strlen($string); $i++) {
708 $newcharstring .= "\x00".$string{$i};
710 return $newcharstring;
713 // ISO-8859-1 => UTF-16LE
714 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
717 $newcharstring .= "\xFF\xFE";
719 for ($i = 0; $i < strlen($string); $i++) {
720 $newcharstring .= $string{$i}."\x00";
722 return $newcharstring;
725 // ISO-8859-1 => UTF-16LE (BOM)
726 public static function iconv_fallback_iso88591_utf16($string) {
727 return self::iconv_fallback_iso88591_utf16le($string, true);
730 // UTF-8 => ISO-8859-1
731 public static function iconv_fallback_utf8_iso88591($string) {
732 if (function_exists('utf8_decode')) {
733 return utf8_decode($string);
735 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
738 $stringlength = strlen($string);
739 while ($offset < $stringlength) {
740 if ((ord($string{$offset}) | 0x07) == 0xF7) {
741 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
742 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
743 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
744 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
745 (ord($string{($offset + 3)}) & 0x3F);
747 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
748 // 1110bbbb 10bbbbbb 10bbbbbb
749 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
750 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
751 (ord($string{($offset + 2)}) & 0x3F);
753 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
755 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
756 (ord($string{($offset + 1)}) & 0x3F);
758 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
760 $charval = ord($string{$offset});
763 // error? throw some kind of warning here?
767 if ($charval !== false) {
768 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
771 return $newcharstring;
775 public static function iconv_fallback_utf8_utf16be($string, $bom=false) {
778 $newcharstring .= "\xFE\xFF";
781 $stringlength = strlen($string);
782 while ($offset < $stringlength) {
783 if ((ord($string{$offset}) | 0x07) == 0xF7) {
784 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
785 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
786 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
787 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
788 (ord($string{($offset + 3)}) & 0x3F);
790 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
791 // 1110bbbb 10bbbbbb 10bbbbbb
792 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
793 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
794 (ord($string{($offset + 2)}) & 0x3F);
796 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
798 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
799 (ord($string{($offset + 1)}) & 0x3F);
801 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
803 $charval = ord($string{$offset});
806 // error? throw some kind of warning here?
810 if ($charval !== false) {
811 $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?');
814 return $newcharstring;
818 public static function iconv_fallback_utf8_utf16le($string, $bom=false) {
821 $newcharstring .= "\xFF\xFE";
824 $stringlength = strlen($string);
825 while ($offset < $stringlength) {
826 if ((ord($string{$offset}) | 0x07) == 0xF7) {
827 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
828 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
829 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
830 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
831 (ord($string{($offset + 3)}) & 0x3F);
833 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
834 // 1110bbbb 10bbbbbb 10bbbbbb
835 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
836 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
837 (ord($string{($offset + 2)}) & 0x3F);
839 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
841 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
842 (ord($string{($offset + 1)}) & 0x3F);
844 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
846 $charval = ord($string{$offset});
849 // error? maybe throw some warning here?
853 if ($charval !== false) {
854 $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
857 return $newcharstring;
860 // UTF-8 => UTF-16LE (BOM)
861 public static function iconv_fallback_utf8_utf16($string) {
862 return self::iconv_fallback_utf8_utf16le($string, true);
866 public static function iconv_fallback_utf16be_utf8($string) {
867 if (substr($string, 0, 2) == "\xFE\xFF") {
869 $string = substr($string, 2);
872 for ($i = 0; $i < strlen($string); $i += 2) {
873 $charval = self::BigEndian2Int(substr($string, $i, 2));
874 $newcharstring .= self::iconv_fallback_int_utf8($charval);
876 return $newcharstring;
880 public static function iconv_fallback_utf16le_utf8($string) {
881 if (substr($string, 0, 2) == "\xFF\xFE") {
883 $string = substr($string, 2);
886 for ($i = 0; $i < strlen($string); $i += 2) {
887 $charval = self::LittleEndian2Int(substr($string, $i, 2));
888 $newcharstring .= self::iconv_fallback_int_utf8($charval);
890 return $newcharstring;
893 // UTF-16BE => ISO-8859-1
894 public static function iconv_fallback_utf16be_iso88591($string) {
895 if (substr($string, 0, 2) == "\xFE\xFF") {
897 $string = substr($string, 2);
900 for ($i = 0; $i < strlen($string); $i += 2) {
901 $charval = self::BigEndian2Int(substr($string, $i, 2));
902 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
904 return $newcharstring;
907 // UTF-16LE => ISO-8859-1
908 public static function iconv_fallback_utf16le_iso88591($string) {
909 if (substr($string, 0, 2) == "\xFF\xFE") {
911 $string = substr($string, 2);
914 for ($i = 0; $i < strlen($string); $i += 2) {
915 $charval = self::LittleEndian2Int(substr($string, $i, 2));
916 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
918 return $newcharstring;
921 // UTF-16 (BOM) => ISO-8859-1
922 public static function iconv_fallback_utf16_iso88591($string) {
923 $bom = substr($string, 0, 2);
924 if ($bom == "\xFE\xFF") {
925 return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
926 } elseif ($bom == "\xFF\xFE") {
927 return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
932 // UTF-16 (BOM) => UTF-8
933 public static function iconv_fallback_utf16_utf8($string) {
934 $bom = substr($string, 0, 2);
935 if ($bom == "\xFE\xFF") {
936 return self::iconv_fallback_utf16be_utf8(substr($string, 2));
937 } elseif ($bom == "\xFF\xFE") {
938 return self::iconv_fallback_utf16le_utf8(substr($string, 2));
943 public static function iconv_fallback($in_charset, $out_charset, $string) {
945 if ($in_charset == $out_charset) {
950 if (function_exists('iconv')) {
951 if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
952 switch ($out_charset) {
954 $converted_string = rtrim($converted_string, "\x00");
957 return $converted_string;
960 // iconv() may sometimes fail with "illegal character in input string" error message
961 // and return an empty string, but returning the unconverted string is more useful
966 // iconv() not available
967 static $ConversionFunctionList = array();
968 if (empty($ConversionFunctionList)) {
969 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8';
970 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16';
971 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
972 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
973 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591';
974 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16';
975 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be';
976 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le';
977 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591';
978 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8';
979 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
980 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8';
981 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
982 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8';
984 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
985 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
986 return self::$ConversionFunction($string);
988 throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
991 public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') {
992 if (is_string($data)) {
993 return self::MultiByteCharString2HTML($data, $charset);
994 } elseif (is_array($data)) {
995 $return_data = array();
996 foreach ($data as $key => $value) {
997 $return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset);
1001 // integer, float, objects, resources, etc
1005 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
1006 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
1035 case 'Windows-1251':
1036 case 'Windows-1252':
1037 $HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
1041 $strlen = strlen($string);
1042 for ($i = 0; $i < $strlen; $i++) {
1043 $char_ord_val = ord($string{$i});
1045 if ($char_ord_val < 0x80) {
1046 $charval = $char_ord_val;
1047 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) {
1048 $charval = (($char_ord_val & 0x07) << 18);
1049 $charval += ((ord($string{++$i}) & 0x3F) << 12);
1050 $charval += ((ord($string{++$i}) & 0x3F) << 6);
1051 $charval += (ord($string{++$i}) & 0x3F);
1052 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) {
1053 $charval = (($char_ord_val & 0x0F) << 12);
1054 $charval += ((ord($string{++$i}) & 0x3F) << 6);
1055 $charval += (ord($string{++$i}) & 0x3F);
1056 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) {
1057 $charval = (($char_ord_val & 0x1F) << 6);
1058 $charval += (ord($string{++$i}) & 0x3F);
1060 if (($charval >= 32) && ($charval <= 127)) {
1061 $HTMLstring .= htmlentities(chr($charval));
1063 $HTMLstring .= '&#'.$charval.';';
1069 for ($i = 0; $i < strlen($string); $i += 2) {
1070 $charval = self::LittleEndian2Int(substr($string, $i, 2));
1071 if (($charval >= 32) && ($charval <= 127)) {
1072 $HTMLstring .= chr($charval);
1074 $HTMLstring .= '&#'.$charval.';';
1080 for ($i = 0; $i < strlen($string); $i += 2) {
1081 $charval = self::BigEndian2Int(substr($string, $i, 2));
1082 if (($charval >= 32) && ($charval <= 127)) {
1083 $HTMLstring .= chr($charval);
1085 $HTMLstring .= '&#'.$charval.';';
1091 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
1099 public static function RGADnameLookup($namecode) {
1100 static $RGADname = array();
1101 if (empty($RGADname)) {
1102 $RGADname[0] = 'not set';
1103 $RGADname[1] = 'Track Gain Adjustment';
1104 $RGADname[2] = 'Album Gain Adjustment';
1107 return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
1111 public static function RGADoriginatorLookup($originatorcode) {
1112 static $RGADoriginator = array();
1113 if (empty($RGADoriginator)) {
1114 $RGADoriginator[0] = 'unspecified';
1115 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
1116 $RGADoriginator[2] = 'set by user';
1117 $RGADoriginator[3] = 'determined automatically';
1120 return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
1124 public static function RGADadjustmentLookup($rawadjustment, $signbit) {
1125 $adjustment = $rawadjustment / 10;
1126 if ($signbit == 1) {
1129 return (float) $adjustment;
1133 public static function RGADgainString($namecode, $originatorcode, $replaygain) {
1134 if ($replaygain < 0) {
1139 $storedreplaygain = intval(round($replaygain * 10));
1140 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
1141 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
1142 $gainstring .= $signbit;
1143 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);
1148 public static function RGADamplitude2dB($amplitude) {
1149 return 20 * log10($amplitude);
1153 public static function GetDataImageSize($imgData, &$imageinfo=array()) {
1154 static $tempdir = '';
1155 if (empty($tempdir)) {
1156 // yes this is ugly, feel free to suggest a better way
1157 require_once(dirname(__FILE__).'/getid3.php');
1158 $getid3_temp = new getID3();
1159 $tempdir = $getid3_temp->tempdir;
1160 unset($getid3_temp);
1162 $GetDataImageSize = false;
1163 if ($tempfilename = tempnam($tempdir, 'gI3')) {
1164 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
1165 fwrite($tmp, $imgData);
1167 $GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
1168 $GetDataImageSize['height'] = $GetDataImageSize[0];
1169 $GetDataImageSize['width'] = $GetDataImageSize[1];
1171 unlink($tempfilename);
1173 return $GetDataImageSize;
1176 public static function ImageExtFromMime($mime_type) {
1177 // temporary way, works OK for now, but should be reworked in the future
1178 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
1181 public static function ImageTypesLookup($imagetypeid) {
1182 static $ImageTypesLookup = array();
1183 if (empty($ImageTypesLookup)) {
1184 $ImageTypesLookup[1] = 'gif';
1185 $ImageTypesLookup[2] = 'jpeg';
1186 $ImageTypesLookup[3] = 'png';
1187 $ImageTypesLookup[4] = 'swf';
1188 $ImageTypesLookup[5] = 'psd';
1189 $ImageTypesLookup[6] = 'bmp';
1190 $ImageTypesLookup[7] = 'tiff (little-endian)';
1191 $ImageTypesLookup[8] = 'tiff (big-endian)';
1192 $ImageTypesLookup[9] = 'jpc';
1193 $ImageTypesLookup[10] = 'jp2';
1194 $ImageTypesLookup[11] = 'jpx';
1195 $ImageTypesLookup[12] = 'jb2';
1196 $ImageTypesLookup[13] = 'swc';
1197 $ImageTypesLookup[14] = 'iff';
1199 return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
1202 public static function CopyTagsToComments(&$ThisFileInfo) {
1204 // Copy all entries from ['tags'] into common ['comments']
1205 if (!empty($ThisFileInfo['tags'])) {
1206 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
1207 foreach ($tagarray as $tagname => $tagdata) {
1208 foreach ($tagdata as $key => $value) {
1209 if (!empty($value)) {
1210 if (empty($ThisFileInfo['comments'][$tagname])) {
1212 // fall through and append value
1214 } elseif ($tagtype == 'id3v1') {
1216 $newvaluelength = strlen(trim($value));
1217 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1218 $oldvaluelength = strlen(trim($existingvalue));
1219 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
1220 // new value is identical but shorter-than (or equal-length to) one already in comments - skip
1225 } elseif (!is_array($value)) {
1227 $newvaluelength = strlen(trim($value));
1228 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1229 $oldvaluelength = strlen(trim($existingvalue));
1230 if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
1231 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
1238 if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
1239 $value = (is_string($value) ? trim($value) : $value);
1240 if (!is_numeric($key)) {
1241 $ThisFileInfo['comments'][$tagname][$key] = $value;
1243 $ThisFileInfo['comments'][$tagname][] = $value;
1251 // Copy to ['comments_html']
1252 if (!empty($ThisFileInfo['comments'])) {
1253 foreach ($ThisFileInfo['comments'] as $field => $values) {
1254 if ($field == 'picture') {
1255 // pictures can take up a lot of space, and we don't need multiple copies of them
1256 // let there be a single copy in [comments][picture], and not elsewhere
1259 foreach ($values as $index => $value) {
1260 if (is_array($value)) {
1261 $ThisFileInfo['comments_html'][$field][$index] = $value;
1263 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
1274 public static function EmbeddedLookup($key, $begin, $end, $file, $name) {
1278 if (isset($cache[$file][$name])) {
1279 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1283 $keylength = strlen($key);
1284 $line_count = $end - $begin - 7;
1287 $fp = fopen($file, 'r');
1289 // Discard $begin lines
1290 for ($i = 0; $i < ($begin + 3); $i++) {
1295 while (0 < $line_count--) {
1298 $line = ltrim(fgets($fp, 1024), "\t ");
1300 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
1301 //$keycheck = substr($line, 0, $keylength);
1302 //if ($key == $keycheck) {
1303 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
1307 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
1308 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
1309 $explodedLine = explode("\t", $line, 2);
1310 $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : '');
1311 $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
1312 $cache[$file][$name][$ThisKey] = trim($ThisValue);
1317 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1320 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
1321 global $GETID3_ERRORARRAY;
1323 if (file_exists($filename)) {
1324 if (include_once($filename)) {
1327 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
1330 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
1332 if ($DieOnFailure) {
1333 throw new Exception($diemessage);
1335 $GETID3_ERRORARRAY[] = $diemessage;
1340 public static function trimNullByte($string) {
1341 return trim($string, "\x00");
1344 public static function getFileSizeSyscall($path) {
1347 if (GETID3_OS_ISWINDOWS) {
1348 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:
1349 $filesystem = new COM('Scripting.FileSystemObject');
1350 $file = $filesystem->GetFile($path);
1351 $filesize = $file->Size();
1352 unset($filesystem, $file);
1354 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
1357 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
1359 if (isset($commandline)) {
1360 $output = trim(`$commandline`);
1361 if (ctype_digit($output)) {
1362 $filesize = (float) $output;
1370 * Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268)
1371 * @param string $path A path.
1372 * @param string $suffix If the name component ends in suffix this will also be cut off.
1375 public static function mb_basename($path, $suffix = null) {
1376 $splited = preg_split('#/#', rtrim($path, '/ '));
1377 return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1);