2 /////////////////////////////////////////////////////////////////
3 /// getID3() by James Heinrich <info@getid3.org> //
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
6 /////////////////////////////////////////////////////////////////
8 // getid3.lib.php - part of getID3() //
9 // See readme.txt for more details //
11 /////////////////////////////////////////////////////////////////
17 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
19 for ($i = 0; $i < strlen($string); $i++) {
21 $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
23 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : 'ยค');
29 if (!empty($htmlencoding)) {
30 if ($htmlencoding === true) {
31 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
33 $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
38 public static function trunc($floatnumber) {
39 // truncates a floating-point number at the decimal point
40 // returns int (if possible, otherwise float)
41 if ($floatnumber >= 1) {
42 $truncatednumber = floor($floatnumber);
43 } elseif ($floatnumber <= -1) {
44 $truncatednumber = ceil($floatnumber);
48 if (self::intValueSupported($truncatednumber)) {
49 $truncatednumber = (int) $truncatednumber;
51 return $truncatednumber;
55 public static function safe_inc(&$variable, $increment=1) {
56 if (isset($variable)) {
57 $variable += $increment;
59 $variable = $increment;
64 public static function CastAsInt($floatnum) {
65 // convert to float if not already
66 $floatnum = (float) $floatnum;
68 // convert a float to type int, only if possible
69 if (self::trunc($floatnum) == $floatnum) {
70 // it's not floating point
71 if (self::intValueSupported($floatnum)) {
72 // it's within int range
73 $floatnum = (int) $floatnum;
79 public static function intValueSupported($num) {
80 // check if integers are 64-bit
81 static $hasINT64 = null;
82 if ($hasINT64 === null) { // 10x faster than is_null()
83 $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
84 if (!$hasINT64 && !defined('PHP_INT_MIN')) {
85 define('PHP_INT_MIN', ~PHP_INT_MAX);
88 // if integers are 64-bit - no other check required
89 if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
95 public static function DecimalizeFraction($fraction) {
96 list($numerator, $denominator) = explode('/', $fraction);
97 return $numerator / ($denominator ? $denominator : 1);
101 public static function DecimalBinary2Float($binarynumerator) {
102 $numerator = self::Bin2Dec($binarynumerator);
103 $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
104 return ($numerator / $denominator);
108 public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
109 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
110 if (strpos($binarypointnumber, '.') === false) {
111 $binarypointnumber = '0.'.$binarypointnumber;
112 } elseif ($binarypointnumber{0} == '.') {
113 $binarypointnumber = '0'.$binarypointnumber;
116 while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
117 if (substr($binarypointnumber, 1, 1) == '.') {
119 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
121 $pointpos = strpos($binarypointnumber, '.');
122 $exponent += ($pointpos - 1);
123 $binarypointnumber = str_replace('.', '', $binarypointnumber);
124 $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1);
127 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
128 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
132 public static function Float2BinaryDecimal($floatvalue) {
133 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
134 $maxbits = 128; // to how many bits of precision should the calculations be taken?
135 $intpart = self::trunc($floatvalue);
136 $floatpart = abs($floatvalue - $intpart);
137 $pointbitstring = '';
138 while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
140 $pointbitstring .= (string) self::trunc($floatpart);
141 $floatpart -= self::trunc($floatpart);
143 $binarypointnumber = decbin($intpart).'.'.$pointbitstring;
144 return $binarypointnumber;
148 public static function Float2String($floatvalue, $bits) {
149 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
165 if ($floatvalue >= 0) {
170 $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
171 $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
172 $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
173 $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
175 return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
179 public static function LittleEndian2Float($byteword) {
180 return self::BigEndian2Float(strrev($byteword));
184 public static function BigEndian2Float($byteword) {
185 // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
186 // http://www.psc.edu/general/software/packages/ieee/ieee.html
187 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
189 $bitword = self::BigEndian2Bin($byteword);
193 $signbit = $bitword{0};
195 switch (strlen($byteword) * 8) {
207 // 80-bit Apple SANE format
208 // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
209 $exponentstring = substr($bitword, 1, 15);
210 $isnormalized = intval($bitword{16});
211 $fractionstring = substr($bitword, 17, 63);
212 $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
213 $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
214 $floatvalue = $exponent * $fraction;
215 if ($signbit == '1') {
225 $exponentstring = substr($bitword, 1, $exponentbits);
226 $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
227 $exponent = self::Bin2Dec($exponentstring);
228 $fraction = self::Bin2Dec($fractionstring);
230 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
233 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
234 if ($signbit == '1') {
235 $floatvalue = '-infinity';
237 $floatvalue = '+infinity';
239 } elseif (($exponent == 0) && ($fraction == 0)) {
240 if ($signbit == '1') {
245 $floatvalue = ($signbit ? 0 : -0);
246 } elseif (($exponent == 0) && ($fraction != 0)) {
247 // These are 'unnormalized' values
248 $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
249 if ($signbit == '1') {
252 } elseif ($exponent != 0) {
253 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
254 if ($signbit == '1') {
258 return (float) $floatvalue;
262 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
264 $bytewordlen = strlen($byteword);
265 if ($bytewordlen == 0) {
268 for ($i = 0; $i < $bytewordlen; $i++) {
269 if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
270 //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
271 $intvalue += (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
273 $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
276 if ($signed && !$synchsafe) {
277 // synchsafe ints are not allowed to be signed
278 if ($bytewordlen <= PHP_INT_SIZE) {
279 $signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
280 if ($intvalue & $signMaskBit) {
281 $intvalue = 0 - ($intvalue & ($signMaskBit - 1));
284 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($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 $loader = libxml_disable_entity_loader( true );
524 $XMLobject = simplexml_load_string( $XMLstring, 'SimpleXMLElement', LIBXML_NOENT );
525 $return = self::SimpleXMLelement2array( $XMLobject );
526 libxml_disable_entity_loader( $loader );
532 public static function SimpleXMLelement2array($XMLobject) {
533 if (!is_object($XMLobject) && !is_array($XMLobject)) {
536 $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
537 foreach ($XMLarray as $key => $value) {
538 $XMLarray[$key] = self::SimpleXMLelement2array($value);
544 // Allan Hansen <ahรartemis*dk>
545 // self::md5_data() - returns md5sum for a file from startuing position to absolute end position
546 public static function hash_data($file, $offset, $end, $algorithm) {
547 static $tempdir = '';
548 if (!self::intValueSupported($end)) {
551 switch ($algorithm) {
553 $hash_function = 'md5_file';
554 $unix_call = 'md5sum';
555 $windows_call = 'md5sum.exe';
560 $hash_function = 'sha1_file';
561 $unix_call = 'sha1sum';
562 $windows_call = 'sha1sum.exe';
567 throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()');
570 $size = $end - $offset;
572 if (GETID3_OS_ISWINDOWS) {
574 // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
575 // Fall back to create-temp-file method:
576 if ($algorithm == 'sha1') {
580 $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
581 foreach ($RequiredFiles as $required_file) {
582 if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
583 // helper apps not available - fall back to old method
587 $commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' | ';
588 $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | ';
589 $commandline .= GETID3_HELPERAPPSDIR.$windows_call;
593 $commandline = 'head -c'.$end.' '.escapeshellarg($file).' | ';
594 $commandline .= 'tail -c'.$size.' | ';
595 $commandline .= $unix_call;
598 if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
599 //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
602 return substr(`$commandline`, 0, $hash_length);
605 if (empty($tempdir)) {
606 // yes this is ugly, feel free to suggest a better way
607 require_once(dirname(__FILE__).'/getid3.php');
608 $getid3_temp = new getID3();
609 $tempdir = $getid3_temp->tempdir;
612 // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
613 if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
614 // can't find anywhere to create a temp file, just fail
621 // copy parts of file
623 self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
624 $result = $hash_function($data_filename);
625 } catch (Exception $e) {
626 throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
628 unlink($data_filename);
632 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
633 if (!self::intValueSupported($offset + $length)) {
634 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit');
636 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
637 if (($fp_dest = fopen($filename_dest, 'wb'))) {
638 if (fseek($fp_src, $offset, SEEK_SET) == 0) {
639 $byteslefttowrite = $length;
640 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
641 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
642 $byteslefttowrite -= $byteswritten;
646 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
650 throw new Exception('failed to create file for writing '.$filename_dest);
654 throw new Exception('failed to open file for reading '.$filename_source);
659 public static function iconv_fallback_int_utf8($charval) {
660 if ($charval < 128) {
662 $newcharstring = chr($charval);
663 } elseif ($charval < 2048) {
665 $newcharstring = chr(($charval >> 6) | 0xC0);
666 $newcharstring .= chr(($charval & 0x3F) | 0x80);
667 } elseif ($charval < 65536) {
668 // 1110bbbb 10bbbbbb 10bbbbbb
669 $newcharstring = chr(($charval >> 12) | 0xE0);
670 $newcharstring .= chr(($charval >> 6) | 0xC0);
671 $newcharstring .= chr(($charval & 0x3F) | 0x80);
673 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
674 $newcharstring = chr(($charval >> 18) | 0xF0);
675 $newcharstring .= chr(($charval >> 12) | 0xC0);
676 $newcharstring .= chr(($charval >> 6) | 0xC0);
677 $newcharstring .= chr(($charval & 0x3F) | 0x80);
679 return $newcharstring;
682 // ISO-8859-1 => UTF-8
683 public static function iconv_fallback_iso88591_utf8($string, $bom=false) {
684 if (function_exists('utf8_encode')) {
685 return utf8_encode($string);
687 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
690 $newcharstring .= "\xEF\xBB\xBF";
692 for ($i = 0; $i < strlen($string); $i++) {
693 $charval = ord($string{$i});
694 $newcharstring .= self::iconv_fallback_int_utf8($charval);
696 return $newcharstring;
699 // ISO-8859-1 => UTF-16BE
700 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
703 $newcharstring .= "\xFE\xFF";
705 for ($i = 0; $i < strlen($string); $i++) {
706 $newcharstring .= "\x00".$string{$i};
708 return $newcharstring;
711 // ISO-8859-1 => UTF-16LE
712 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
715 $newcharstring .= "\xFF\xFE";
717 for ($i = 0; $i < strlen($string); $i++) {
718 $newcharstring .= $string{$i}."\x00";
720 return $newcharstring;
723 // ISO-8859-1 => UTF-16LE (BOM)
724 public static function iconv_fallback_iso88591_utf16($string) {
725 return self::iconv_fallback_iso88591_utf16le($string, true);
728 // UTF-8 => ISO-8859-1
729 public static function iconv_fallback_utf8_iso88591($string) {
730 if (function_exists('utf8_decode')) {
731 return utf8_decode($string);
733 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
736 $stringlength = strlen($string);
737 while ($offset < $stringlength) {
738 if ((ord($string{$offset}) | 0x07) == 0xF7) {
739 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
740 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
741 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
742 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
743 (ord($string{($offset + 3)}) & 0x3F);
745 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
746 // 1110bbbb 10bbbbbb 10bbbbbb
747 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
748 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
749 (ord($string{($offset + 2)}) & 0x3F);
751 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
753 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
754 (ord($string{($offset + 1)}) & 0x3F);
756 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
758 $charval = ord($string{$offset});
761 // error? throw some kind of warning here?
765 if ($charval !== false) {
766 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
769 return $newcharstring;
773 public static function iconv_fallback_utf8_utf16be($string, $bom=false) {
776 $newcharstring .= "\xFE\xFF";
779 $stringlength = strlen($string);
780 while ($offset < $stringlength) {
781 if ((ord($string{$offset}) | 0x07) == 0xF7) {
782 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
783 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
784 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
785 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
786 (ord($string{($offset + 3)}) & 0x3F);
788 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
789 // 1110bbbb 10bbbbbb 10bbbbbb
790 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
791 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
792 (ord($string{($offset + 2)}) & 0x3F);
794 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
796 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
797 (ord($string{($offset + 1)}) & 0x3F);
799 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
801 $charval = ord($string{$offset});
804 // error? throw some kind of warning here?
808 if ($charval !== false) {
809 $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?');
812 return $newcharstring;
816 public static function iconv_fallback_utf8_utf16le($string, $bom=false) {
819 $newcharstring .= "\xFF\xFE";
822 $stringlength = strlen($string);
823 while ($offset < $stringlength) {
824 if ((ord($string{$offset}) | 0x07) == 0xF7) {
825 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
826 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
827 ((ord($string{($offset + 1)}) & 0x3F) << 12) &
828 ((ord($string{($offset + 2)}) & 0x3F) << 6) &
829 (ord($string{($offset + 3)}) & 0x3F);
831 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
832 // 1110bbbb 10bbbbbb 10bbbbbb
833 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
834 ((ord($string{($offset + 1)}) & 0x3F) << 6) &
835 (ord($string{($offset + 2)}) & 0x3F);
837 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
839 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
840 (ord($string{($offset + 1)}) & 0x3F);
842 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
844 $charval = ord($string{$offset});
847 // error? maybe throw some warning here?
851 if ($charval !== false) {
852 $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
855 return $newcharstring;
858 // UTF-8 => UTF-16LE (BOM)
859 public static function iconv_fallback_utf8_utf16($string) {
860 return self::iconv_fallback_utf8_utf16le($string, true);
864 public static function iconv_fallback_utf16be_utf8($string) {
865 if (substr($string, 0, 2) == "\xFE\xFF") {
867 $string = substr($string, 2);
870 for ($i = 0; $i < strlen($string); $i += 2) {
871 $charval = self::BigEndian2Int(substr($string, $i, 2));
872 $newcharstring .= self::iconv_fallback_int_utf8($charval);
874 return $newcharstring;
878 public static function iconv_fallback_utf16le_utf8($string) {
879 if (substr($string, 0, 2) == "\xFF\xFE") {
881 $string = substr($string, 2);
884 for ($i = 0; $i < strlen($string); $i += 2) {
885 $charval = self::LittleEndian2Int(substr($string, $i, 2));
886 $newcharstring .= self::iconv_fallback_int_utf8($charval);
888 return $newcharstring;
891 // UTF-16BE => ISO-8859-1
892 public static function iconv_fallback_utf16be_iso88591($string) {
893 if (substr($string, 0, 2) == "\xFE\xFF") {
895 $string = substr($string, 2);
898 for ($i = 0; $i < strlen($string); $i += 2) {
899 $charval = self::BigEndian2Int(substr($string, $i, 2));
900 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
902 return $newcharstring;
905 // UTF-16LE => ISO-8859-1
906 public static function iconv_fallback_utf16le_iso88591($string) {
907 if (substr($string, 0, 2) == "\xFF\xFE") {
909 $string = substr($string, 2);
912 for ($i = 0; $i < strlen($string); $i += 2) {
913 $charval = self::LittleEndian2Int(substr($string, $i, 2));
914 $newcharstring .= (($charval < 256) ? chr($charval) : '?');
916 return $newcharstring;
919 // UTF-16 (BOM) => ISO-8859-1
920 public static function iconv_fallback_utf16_iso88591($string) {
921 $bom = substr($string, 0, 2);
922 if ($bom == "\xFE\xFF") {
923 return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
924 } elseif ($bom == "\xFF\xFE") {
925 return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
930 // UTF-16 (BOM) => UTF-8
931 public static function iconv_fallback_utf16_utf8($string) {
932 $bom = substr($string, 0, 2);
933 if ($bom == "\xFE\xFF") {
934 return self::iconv_fallback_utf16be_utf8(substr($string, 2));
935 } elseif ($bom == "\xFF\xFE") {
936 return self::iconv_fallback_utf16le_utf8(substr($string, 2));
941 public static function iconv_fallback($in_charset, $out_charset, $string) {
943 if ($in_charset == $out_charset) {
948 if (function_exists('iconv')) {
949 if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
950 switch ($out_charset) {
952 $converted_string = rtrim($converted_string, "\x00");
955 return $converted_string;
958 // iconv() may sometimes fail with "illegal character in input string" error message
959 // and return an empty string, but returning the unconverted string is more useful
964 // iconv() not available
965 static $ConversionFunctionList = array();
966 if (empty($ConversionFunctionList)) {
967 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8';
968 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16';
969 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
970 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
971 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591';
972 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16';
973 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be';
974 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le';
975 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591';
976 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8';
977 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
978 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8';
979 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
980 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8';
982 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
983 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
984 return self::$ConversionFunction($string);
986 throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
990 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
991 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
1020 case 'Windows-1251':
1021 case 'Windows-1252':
1022 $HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
1026 $strlen = strlen($string);
1027 for ($i = 0; $i < $strlen; $i++) {
1028 $char_ord_val = ord($string{$i});
1030 if ($char_ord_val < 0x80) {
1031 $charval = $char_ord_val;
1032 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) {
1033 $charval = (($char_ord_val & 0x07) << 18);
1034 $charval += ((ord($string{++$i}) & 0x3F) << 12);
1035 $charval += ((ord($string{++$i}) & 0x3F) << 6);
1036 $charval += (ord($string{++$i}) & 0x3F);
1037 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) {
1038 $charval = (($char_ord_val & 0x0F) << 12);
1039 $charval += ((ord($string{++$i}) & 0x3F) << 6);
1040 $charval += (ord($string{++$i}) & 0x3F);
1041 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) {
1042 $charval = (($char_ord_val & 0x1F) << 6);
1043 $charval += (ord($string{++$i}) & 0x3F);
1045 if (($charval >= 32) && ($charval <= 127)) {
1046 $HTMLstring .= htmlentities(chr($charval));
1048 $HTMLstring .= '&#'.$charval.';';
1054 for ($i = 0; $i < strlen($string); $i += 2) {
1055 $charval = self::LittleEndian2Int(substr($string, $i, 2));
1056 if (($charval >= 32) && ($charval <= 127)) {
1057 $HTMLstring .= chr($charval);
1059 $HTMLstring .= '&#'.$charval.';';
1065 for ($i = 0; $i < strlen($string); $i += 2) {
1066 $charval = self::BigEndian2Int(substr($string, $i, 2));
1067 if (($charval >= 32) && ($charval <= 127)) {
1068 $HTMLstring .= chr($charval);
1070 $HTMLstring .= '&#'.$charval.';';
1076 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
1084 public static function RGADnameLookup($namecode) {
1085 static $RGADname = array();
1086 if (empty($RGADname)) {
1087 $RGADname[0] = 'not set';
1088 $RGADname[1] = 'Track Gain Adjustment';
1089 $RGADname[2] = 'Album Gain Adjustment';
1092 return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
1096 public static function RGADoriginatorLookup($originatorcode) {
1097 static $RGADoriginator = array();
1098 if (empty($RGADoriginator)) {
1099 $RGADoriginator[0] = 'unspecified';
1100 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
1101 $RGADoriginator[2] = 'set by user';
1102 $RGADoriginator[3] = 'determined automatically';
1105 return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
1109 public static function RGADadjustmentLookup($rawadjustment, $signbit) {
1110 $adjustment = $rawadjustment / 10;
1111 if ($signbit == 1) {
1114 return (float) $adjustment;
1118 public static function RGADgainString($namecode, $originatorcode, $replaygain) {
1119 if ($replaygain < 0) {
1124 $storedreplaygain = intval(round($replaygain * 10));
1125 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
1126 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
1127 $gainstring .= $signbit;
1128 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);
1133 public static function RGADamplitude2dB($amplitude) {
1134 return 20 * log10($amplitude);
1138 public static function GetDataImageSize($imgData, &$imageinfo=array()) {
1139 static $tempdir = '';
1140 if (empty($tempdir)) {
1141 // yes this is ugly, feel free to suggest a better way
1142 require_once(dirname(__FILE__).'/getid3.php');
1143 $getid3_temp = new getID3();
1144 $tempdir = $getid3_temp->tempdir;
1145 unset($getid3_temp);
1147 $GetDataImageSize = false;
1148 if ($tempfilename = tempnam($tempdir, 'gI3')) {
1149 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
1150 fwrite($tmp, $imgData);
1152 $GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
1154 unlink($tempfilename);
1156 return $GetDataImageSize;
1159 public static function ImageExtFromMime($mime_type) {
1160 // temporary way, works OK for now, but should be reworked in the future
1161 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
1164 public static function ImageTypesLookup($imagetypeid) {
1165 static $ImageTypesLookup = array();
1166 if (empty($ImageTypesLookup)) {
1167 $ImageTypesLookup[1] = 'gif';
1168 $ImageTypesLookup[2] = 'jpeg';
1169 $ImageTypesLookup[3] = 'png';
1170 $ImageTypesLookup[4] = 'swf';
1171 $ImageTypesLookup[5] = 'psd';
1172 $ImageTypesLookup[6] = 'bmp';
1173 $ImageTypesLookup[7] = 'tiff (little-endian)';
1174 $ImageTypesLookup[8] = 'tiff (big-endian)';
1175 $ImageTypesLookup[9] = 'jpc';
1176 $ImageTypesLookup[10] = 'jp2';
1177 $ImageTypesLookup[11] = 'jpx';
1178 $ImageTypesLookup[12] = 'jb2';
1179 $ImageTypesLookup[13] = 'swc';
1180 $ImageTypesLookup[14] = 'iff';
1182 return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
1185 public static function CopyTagsToComments(&$ThisFileInfo) {
1187 // Copy all entries from ['tags'] into common ['comments']
1188 if (!empty($ThisFileInfo['tags'])) {
1189 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
1190 foreach ($tagarray as $tagname => $tagdata) {
1191 foreach ($tagdata as $key => $value) {
1192 if (!empty($value)) {
1193 if (empty($ThisFileInfo['comments'][$tagname])) {
1195 // fall through and append value
1197 } elseif ($tagtype == 'id3v1') {
1199 $newvaluelength = strlen(trim($value));
1200 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1201 $oldvaluelength = strlen(trim($existingvalue));
1202 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
1203 // new value is identical but shorter-than (or equal-length to) one already in comments - skip
1208 } elseif (!is_array($value)) {
1210 $newvaluelength = strlen(trim($value));
1211 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1212 $oldvaluelength = strlen(trim($existingvalue));
1213 if (($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
1214 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
1220 if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
1221 $value = (is_string($value) ? trim($value) : $value);
1222 $ThisFileInfo['comments'][$tagname][] = $value;
1229 // Copy to ['comments_html']
1230 foreach ($ThisFileInfo['comments'] as $field => $values) {
1231 if ($field == 'picture') {
1232 // pictures can take up a lot of space, and we don't need multiple copies of them
1233 // let there be a single copy in [comments][picture], and not elsewhere
1236 foreach ($values as $index => $value) {
1237 if (is_array($value)) {
1238 $ThisFileInfo['comments_html'][$field][$index] = $value;
1240 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
1249 public static function EmbeddedLookup($key, $begin, $end, $file, $name) {
1253 if (isset($cache[$file][$name])) {
1254 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1258 $keylength = strlen($key);
1259 $line_count = $end - $begin - 7;
1262 $fp = fopen($file, 'r');
1264 // Discard $begin lines
1265 for ($i = 0; $i < ($begin + 3); $i++) {
1270 while (0 < $line_count--) {
1273 $line = ltrim(fgets($fp, 1024), "\t ");
1275 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
1276 //$keycheck = substr($line, 0, $keylength);
1277 //if ($key == $keycheck) {
1278 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
1282 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
1283 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
1284 $explodedLine = explode("\t", $line, 2);
1285 $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : '');
1286 $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
1287 $cache[$file][$name][$ThisKey] = trim($ThisValue);
1292 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1295 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
1296 global $GETID3_ERRORARRAY;
1298 if (file_exists($filename)) {
1299 if (include_once($filename)) {
1302 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
1305 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
1307 if ($DieOnFailure) {
1308 throw new Exception($diemessage);
1310 $GETID3_ERRORARRAY[] = $diemessage;
1315 public static function trimNullByte($string) {
1316 return trim($string, "\x00");
1319 public static function getFileSizeSyscall($path) {
1322 if (GETID3_OS_ISWINDOWS) {
1323 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:
1324 $filesystem = new COM('Scripting.FileSystemObject');
1325 $file = $filesystem->GetFile($path);
1326 $filesize = $file->Size();
1327 unset($filesystem, $file);
1329 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
1332 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
1334 if (isset($commandline)) {
1335 $output = trim(`$commandline`);
1336 if (ctype_digit($output)) {
1337 $filesize = (float) $output;