ILIAS  release_5-2 Revision v5.2.25-18-g3f80b82851
Helper.php
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1 <?php
2 
3 namespace GetId3\Lib;
4 
7 
10 // available at http://getid3.sourceforge.net //
11 // or http://www.getid3.org //
13 // //
14 // GetId3.lib.php - part of GetId3() //
15 // See readme.txt for more details //
16 // ///
18 
26 class Helper
27 {
36  public static function PrintHexBytes($string, $hex = true, $spaces = true,
37  $htmlencoding = 'UTF-8')
38  {
39  $returnstring = '';
40  for ($i = 0; $i < strlen($string); $i++) {
41  if ($hex) {
42  $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0',
43  STR_PAD_LEFT);
44  } else {
45  $returnstring .= ' ' . (preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : 'ยค');
46  }
47  if ($spaces) {
48  $returnstring .= ' ';
49  }
50  }
51  if (!empty($htmlencoding)) {
52  if ($htmlencoding === true) {
53  $htmlencoding = 'UTF-8'; // prior to GetId3 v1.9.0 the function's 4th parameter was boolean
54  }
55  $returnstring = htmlentities($returnstring, ENT_QUOTES,
56  $htmlencoding);
57  }
58 
59  return $returnstring;
60  }
61 
67  public static function trunc($floatnumber)
68  {
69  // truncates a floating-point number at the decimal point
70  // returns int (if possible, otherwise float)
71  if ($floatnumber >= 1) {
72  $truncatednumber = floor($floatnumber);
73  } elseif ($floatnumber <= -1) {
74  $truncatednumber = ceil($floatnumber);
75  } else {
76  $truncatednumber = 0;
77  }
78  if (self::intValueSupported($truncatednumber)) {
79  $truncatednumber = (int) $truncatednumber;
80  }
81 
82  return $truncatednumber;
83  }
84 
91  public static function safe_inc(&$variable, $increment = 1)
92  {
93  if (isset($variable)) {
94  $variable += $increment;
95  } else {
96  $variable = $increment;
97  }
98 
99  return true;
100  }
101 
107  public static function CastAsInt($floatnum)
108  {
109  // convert to float if not already
110  $floatnum = (float) $floatnum;
111 
112  // convert a float to type int, only if possible
113  if (self::trunc($floatnum) == $floatnum) {
114  // it's not floating point
115  if (self::intValueSupported($floatnum)) {
116  // it's within int range
117  $floatnum = (int) $floatnum;
118  }
119  }
120 
121  return $floatnum;
122  }
123 
130  public static function intValueSupported($num)
131  {
132  // check if integers are 64-bit
133  static $hasINT64 = null;
134  if ($hasINT64 === null) { // 10x faster than is_null()
135  $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
136  if (!$hasINT64 && !defined('PHP_INT_MIN')) {
137  define('PHP_INT_MIN', ~PHP_INT_MAX);
138  }
139  }
140  // if integers are 64-bit - no other check required
141  if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
142  return true;
143  }
144 
145  return false;
146  }
147 
153  public static function DecimalizeFraction($fraction)
154  {
155  list($numerator, $denominator) = explode('/', $fraction);
156 
157  return $numerator / ($denominator ? $denominator : 1);
158  }
159 
165  public static function DecimalBinary2Float($binarynumerator)
166  {
167  $numerator = self::Bin2Dec($binarynumerator);
168  $denominator = self::Bin2Dec('1' . str_repeat('0',
169  strlen($binarynumerator)));
170 
171  return ($numerator / $denominator);
172  }
173 
180  public static function NormalizeBinaryPoint($binarypointnumber, $maxbits = 52)
181  {
182  // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
183  if (strpos($binarypointnumber, '.') === false) {
184  $binarypointnumber = '0.' . $binarypointnumber;
185  } elseif ($binarypointnumber{0} == '.') {
186  $binarypointnumber = '0' . $binarypointnumber;
187  }
188  $exponent = 0;
189  while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1,
190  1) != '.')) {
191  if (substr($binarypointnumber, 1, 1) == '.') {
192  $exponent--;
193  $binarypointnumber = substr($binarypointnumber, 2, 1) . '.' . substr($binarypointnumber,
194  3);
195  } else {
196  $pointpos = strpos($binarypointnumber, '.');
197  $exponent += ($pointpos - 1);
198  $binarypointnumber = str_replace('.', '', $binarypointnumber);
199  $binarypointnumber = $binarypointnumber{0} . '.' . substr($binarypointnumber,
200  1);
201  }
202  }
203  $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2),
204  $maxbits + 2, '0', STR_PAD_RIGHT);
205 
206  return array('normalized' => $binarypointnumber, 'exponent' => (int) $exponent);
207  }
208 
214  public static function Float2BinaryDecimal($floatvalue)
215  {
216  // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
217  $maxbits = 128; // to how many bits of precision should the calculations be taken?
218  $intpart = self::trunc($floatvalue);
219  $floatpart = abs($floatvalue - $intpart);
220  $pointbitstring = '';
221  while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
222  $floatpart *= 2;
223  $pointbitstring .= (string) self::trunc($floatpart);
224  $floatpart -= self::trunc($floatpart);
225  }
226  $binarypointnumber = decbin($intpart) . '.' . $pointbitstring;
227 
228  return $binarypointnumber;
229  }
230 
237  public static function Float2String($floatvalue, $bits)
238  {
239  // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
240  switch ($bits) {
241  case 32:
242  $exponentbits = 8;
243  $fractionbits = 23;
244  break;
245 
246  case 64:
247  $exponentbits = 11;
248  $fractionbits = 52;
249  break;
250 
251  default:
252  return false;
253  break;
254  }
255  if ($floatvalue >= 0) {
256  $signbit = '0';
257  } else {
258  $signbit = '1';
259  }
260  $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue),
261  $fractionbits);
262  $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
263  $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits,
264  '0', STR_PAD_LEFT);
265  $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2),
266  $fractionbits, '0', STR_PAD_RIGHT);
267 
268  return self::BigEndian2String(self::Bin2Dec($signbit . $exponentbitstring . $fractionbitstring),
269  $bits % 8, false);
270  }
271 
277  public static function LittleEndian2Float($byteword)
278  {
279  return self::BigEndian2Float(strrev($byteword));
280  }
281 
290  public static function BigEndian2Float($byteword)
291  {
292  $bitword = self::BigEndian2Bin($byteword);
293  if (!$bitword) {
294  return 0;
295  }
296  $signbit = $bitword{0};
297 
298  switch (strlen($byteword) * 8) {
299  case 32:
300  $exponentbits = 8;
301  $fractionbits = 23;
302  break;
303 
304  case 64:
305  $exponentbits = 11;
306  $fractionbits = 52;
307  break;
308 
309  case 80:
310  // 80-bit Apple SANE format
311  // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
312  $exponentstring = substr($bitword, 1, 15);
313  $isnormalized = intval($bitword{16});
314  $fractionstring = substr($bitword, 17, 63);
315  $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
316  $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
317  $floatvalue = $exponent * $fraction;
318  if ($signbit == '1') {
319  $floatvalue *= -1;
320  }
321 
322  return $floatvalue;
323  break;
324 
325  default:
326  return false;
327  break;
328  }
329  $exponentstring = substr($bitword, 1, $exponentbits);
330  $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
331  $exponent = self::Bin2Dec($exponentstring);
332  $fraction = self::Bin2Dec($fractionstring);
333 
334  if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
335  // Not a Number
336  $floatvalue = false;
337  } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
338  if ($signbit == '1') {
339  $floatvalue = '-infinity';
340  } else {
341  $floatvalue = '+infinity';
342  }
343  } elseif (($exponent == 0) && ($fraction == 0)) {
344  if ($signbit == '1') {
345  $floatvalue = -0;
346  } else {
347  $floatvalue = 0;
348  }
349  $floatvalue = ($signbit ? 0 : -0);
350  } elseif (($exponent == 0) && ($fraction != 0)) {
351  // These are 'unnormalized' values
352  $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
353  if ($signbit == '1') {
354  $floatvalue *= -1;
355  }
356  } elseif ($exponent != 0) {
357  $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
358  if ($signbit == '1') {
359  $floatvalue *= -1;
360  }
361  }
362 
363  return (float) $floatvalue;
364  }
365 
374  public static function BigEndian2Int($byteword, $synchsafe = false,
375  $signed = false)
376  {
377  $intvalue = 0;
378  $bytewordlen = strlen($byteword);
379  if ($bytewordlen == 0) {
380  return false;
381  }
382  for ($i = 0; $i < $bytewordlen; $i++) {
383  if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
384  //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
385  $intvalue += (ord($byteword{$i}) & 0x7F) * pow(2,
386  ($bytewordlen - 1 - $i) * 7);
387  } else {
388  $intvalue += ord($byteword{$i}) * pow(256,
389  ($bytewordlen - 1 - $i));
390  }
391  }
392  if ($signed && !$synchsafe) {
393  // synchsafe ints are not allowed to be signed
394  if ($bytewordlen <= PHP_INT_SIZE) {
395  $signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
396  if ($intvalue & $signMaskBit) {
397  $intvalue = 0 - ($intvalue & ($signMaskBit - 1));
398  }
399  } else {
400  throw new DefaultException('ERROR: Cannot have signed integers larger than ' . (8 * PHP_INT_SIZE) . '-bits (' . strlen($byteword) . ') in self::BigEndian2Int()');
401  }
402  }
403 
404  return self::CastAsInt($intvalue);
405  }
406 
413  public static function LittleEndian2Int($byteword, $signed = false)
414  {
415  return self::BigEndian2Int(strrev($byteword), false, $signed);
416  }
417 
423  public static function BigEndian2Bin($byteword)
424  {
425  $binvalue = '';
426  $bytewordlen = strlen($byteword);
427  for ($i = 0; $i < $bytewordlen; $i++) {
428  $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0',
429  STR_PAD_LEFT);
430  }
431 
432  return $binvalue;
433  }
434 
444  public static function BigEndian2String($number, $minbytes = 1,
445  $synchsafe = false, $signed = false)
446  {
447  if ($number < 0) {
448  throw new DefaultException('ERROR: self::BigEndian2String() does not support negative numbers');
449  }
450  $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
451  $intstring = '';
452  if ($signed) {
453  if ($minbytes > PHP_INT_SIZE) {
454  throw new DefaultException('ERROR: Cannot have signed integers larger than ' . (8 * PHP_INT_SIZE) . '-bits in self::BigEndian2String()');
455  }
456  $number = $number & (0x80 << (8 * ($minbytes - 1)));
457  }
458  while ($number != 0) {
459  $quotient = ($number / ($maskbyte + 1));
460  $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)) . $intstring;
461  $number = floor($quotient);
462  }
463 
464  return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
465  }
466 
472  public static function Dec2Bin($number)
473  {
474  while ($number >= 256) {
475  $bytes[] = (($number / 256) - (floor($number / 256))) * 256;
476  $number = floor($number / 256);
477  }
478  $bytes[] = $number;
479  $binstring = '';
480  for ($i = 0; $i < count($bytes); $i++) {
481  $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]),
482  8,
483  '0',
484  STR_PAD_LEFT)) . $binstring;
485  }
486 
487  return $binstring;
488  }
489 
496  public static function Bin2Dec($binstring, $signed = false)
497  {
498  $signmult = 1;
499  if ($signed) {
500  if ($binstring{0} == '1') {
501  $signmult = -1;
502  }
503  $binstring = substr($binstring, 1);
504  }
505  $decvalue = 0;
506  for ($i = 0; $i < strlen($binstring); $i++) {
507  $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1,
508  1)) * pow(2, $i);
509  }
510 
511  return self::CastAsInt($decvalue * $signmult);
512  }
513 
519  public static function Bin2String($binstring)
520  {
521  // return 'hi' for input of '0110100001101001'
522  $string = '';
523  $binstringreversed = strrev($binstring);
524  for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
525  $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))) . $string;
526  }
527 
528  return $string;
529  }
530 
538  public static function LittleEndian2String($number, $minbytes = 1,
539  $synchsafe = false)
540  {
541  $intstring = '';
542  while ($number > 0) {
543  if ($synchsafe) {
544  $intstring = $intstring . chr($number & 127);
545  $number >>= 7;
546  } else {
547  $intstring = $intstring . chr($number & 255);
548  $number >>= 8;
549  }
550  }
551 
552  return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
553  }
554 
561  public static function array_merge_clobber($array1, $array2)
562  {
563  // written by kcร˜hireability*com
564  // taken from http://www.php.net/manual/en/function.array-merge-recursive.php
565  if (!is_array($array1) || !is_array($array2)) {
566  return false;
567  }
568  $newarray = $array1;
569  foreach ($array2 as $key => $val) {
570  if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
571  $newarray[$key] = self::array_merge_clobber($newarray[$key],
572  $val);
573  } else {
574  $newarray[$key] = $val;
575  }
576  }
577 
578  return $newarray;
579  }
580 
587  public static function array_merge_noclobber($array1, $array2)
588  {
589  if (!is_array($array1) || !is_array($array2)) {
590  return false;
591  }
592  $newarray = $array1;
593  foreach ($array2 as $key => $val) {
594  if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
595  $newarray[$key] = self::array_merge_noclobber($newarray[$key],
596  $val);
597  } elseif (!isset($newarray[$key])) {
598  $newarray[$key] = $val;
599  }
600  }
601 
602  return $newarray;
603  }
604 
610  public static function ksort_recursive(&$theArray)
611  {
612  ksort($theArray);
613  foreach ($theArray as $key => $value) {
614  if (is_array($value)) {
615  self::ksort_recursive($theArray[$key]);
616  }
617  }
618 
619  return true;
620  }
621 
628  public static function fileextension($filename, $numextensions = 1)
629  {
630  if (strstr($filename, '.')) {
631  $reversedfilename = strrev($filename);
632  $offset = 0;
633  for ($i = 0; $i < $numextensions; $i++) {
634  $offset = strpos($reversedfilename, '.', $offset + 1);
635  if ($offset === false) {
636  return '';
637  }
638  }
639 
640  return strrev(substr($reversedfilename, 0, $offset));
641  }
642 
643  return '';
644  }
645 
651  public static function PlaytimeString($seconds)
652  {
653  $sign = (($seconds < 0) ? '-' : '');
654  $seconds = round(abs($seconds));
655  $H = (int) floor($seconds / 3600);
656  $M = (int) floor(($seconds - (3600 * $H) ) / 60);
657  $S = (int) round($seconds - (3600 * $H) - (60 * $M));
658 
659  return $sign . ($H ? $H . ':' : '') . ($H ? str_pad($M, 2, '0',
660  STR_PAD_LEFT) : intval($M)) . ':' . str_pad($S,
661  2,
662  0,
663  STR_PAD_LEFT);
664  }
665 
671  public static function DateMac2Unix($macdate)
672  {
673  // Macintosh timestamp: seconds since 00:00h January 1, 1904
674  // UNIX timestamp: seconds since 00:00h January 1, 1970
675  return self::CastAsInt($macdate - 2082844800);
676  }
677 
683  public static function FixedPoint8_8($rawdata)
684  {
685  return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata,
686  1,
687  1)) / pow(2,
688  8));
689  }
690 
696  public static function FixedPoint16_16($rawdata)
697  {
698  return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata,
699  2,
700  2)) / pow(2,
701  16));
702  }
703 
709  public static function FixedPoint2_30($rawdata)
710  {
711  $binarystring = self::BigEndian2Bin($rawdata);
712 
713  return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring,
714  2,
715  30)) / pow(2,
716  30));
717  }
718 
726  public static function CreateDeepArray($ArrayPath, $Separator, $Value)
727  {
728  // assigns $Value to a nested array path:
729  // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt')
730  // is the same as:
731  // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
732  // or
733  // $foo['path']['to']['my'] = 'file.txt';
734  while ($ArrayPath && ($ArrayPath{0} == $Separator)) {
735  $ArrayPath = substr($ArrayPath, 1);
736  }
737  if (($pos = strpos($ArrayPath, $Separator)) !== false) {
738  $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath,
739  $pos + 1),
740  $Separator,
741  $Value);
742  } else {
743  $ReturnedArray[$ArrayPath] = $Value;
744  }
745 
746  return $ReturnedArray;
747  }
748 
755  public static function array_max($arraydata, $returnkey = false)
756  {
757  $maxvalue = false;
758  $maxkey = false;
759  foreach ($arraydata as $key => $value) {
760  if (!is_array($value)) {
761  if ($value > $maxvalue) {
762  $maxvalue = $value;
763  $maxkey = $key;
764  }
765  }
766  }
767 
768  return ($returnkey ? $maxkey : $maxvalue);
769  }
770 
777  public static function array_min($arraydata, $returnkey = false)
778  {
779  $minvalue = false;
780  $minkey = false;
781  foreach ($arraydata as $key => $value) {
782  if (!is_array($value)) {
783  if ($value > $minvalue) {
784  $minvalue = $value;
785  $minkey = $key;
786  }
787  }
788  }
789 
790  return ($returnkey ? $minkey : $minvalue);
791  }
792 
798  public static function XML2array($XMLstring)
799  {
800  if (function_exists('simplexml_load_string')) {
801  if (function_exists('get_object_vars')) {
802  $XMLobject = simplexml_load_string($XMLstring);
803 
804  return self::SimpleXMLelement2array($XMLobject);
805  }
806  }
807 
808  return false;
809  }
810 
816  public static function SimpleXMLelement2array($XMLobject)
817  {
818  if (!is_object($XMLobject) && !is_array($XMLobject)) {
819  return $XMLobject;
820  }
821  $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
822  foreach ($XMLarray as $key => $value) {
823  $XMLarray[$key] = self::SimpleXMLelement2array($value);
824  }
825 
826  return $XMLarray;
827  }
828 
841  public static function hash_data($file, $offset, $end, $algorithm)
842  {
843  static $tempdir = '';
844  if (!self::intValueSupported($end)) {
845  return false;
846  }
847  switch ($algorithm) {
848  case 'md5':
849  $hash_function = 'md5_file';
850  $unix_call = 'md5sum';
851  $windows_call = 'md5sum.exe';
852  $hash_length = 32;
853  break;
854 
855  case 'sha1':
856  $hash_function = 'sha1_file';
857  $unix_call = 'sha1sum';
858  $windows_call = 'sha1sum.exe';
859  $hash_length = 40;
860  break;
861 
862  default:
863  throw new DefaultException('Invalid algorithm (' . $algorithm . ') in self::hash_data()');
864  break;
865  }
866  $size = $end - $offset;
867  while (true) {
869 
870  // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
871  // Fall back to create-temp-file method:
872  if ($algorithm == 'sha1') {
873  break;
874  }
875 
876  $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
877  foreach ($RequiredFiles as $required_file) {
878  if (!is_readable(GetId3Core::getHelperAppsDir() . $required_file)) {
879  // helper apps not available - fall back to old method
880  break 2;
881  }
882  }
883  $commandline = GetId3Core::getHelperAppsDir() . 'head.exe -c ' . $end . ' ' . escapeshellarg(str_replace('/',
884  DIRECTORY_SEPARATOR,
885  $file)) . ' | ';
886  $commandline .= GetId3Core::getHelperAppsDir() . 'tail.exe -c ' . $size . ' | ';
887  $commandline .= GetId3Core::getHelperAppsDir() . $windows_call;
888  } else {
889 
890  $commandline = 'head -c' . $end . ' ' . escapeshellarg($file) . ' | ';
891  $commandline .= 'tail -c' . $size . ' | ';
892  $commandline .= $unix_call;
893  }
894  if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
895  //throw new DefaultException('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
896  break;
897  }
898 
899  return substr(`$commandline`, 0, $hash_length);
900  }
901 
902  if (empty($tempdir)) {
903  // yes this is ugly, feel free to suggest a better way
904  $getid3_temp = new GetId3Core();
905  $tempdir = $getid3_temp->tempdir;
906  unset($getid3_temp);
907  }
908  // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
909  if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
910  // can't find anywhere to create a temp file, just fail
911  return false;
912  }
913 
914  // Init
915  $result = false;
916 
917  // copy parts of file
918  try {
919  self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
920  $result = $hash_function($data_filename);
921  } catch (DefaultException $e) {
922  throw new DefaultException('self::CopyFileParts() failed in getid_lib::hash_data(): ' . $e->getMessage());
923  }
924  unlink($data_filename);
925 
926  return $result;
927  }
928 
938  public static function CopyFileParts($filename_source, $filename_dest,
939  $offset, $length)
940  {
941  if (!self::intValueSupported($offset + $length)) {
942  throw new DefaultException('cannot copy file portion, it extends beyond the ' . round(PHP_INT_MAX / 1073741824) . 'GB limit');
943  }
944  if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source,
945  'rb'))) {
946  if (($fp_dest = fopen($filename_dest, 'wb'))) {
947  if (fseek($fp_src, $offset, SEEK_SET) == 0) {
948  $byteslefttowrite = $length;
949  while (($byteslefttowrite > 0) && ($buffer = fread($fp_src,
950  min($byteslefttowrite,
952  $byteswritten = fwrite($fp_dest, $buffer,
953  $byteslefttowrite);
954  $byteslefttowrite -= $byteswritten;
955  }
956 
957  return true;
958  } else {
959  throw new DefaultException('failed to seek to offset ' . $offset . ' in ' . $filename_source);
960  }
961  fclose($fp_dest);
962  } else {
963  throw new DefaultException('failed to create file for writing ' . $filename_dest);
964  }
965  fclose($fp_src);
966  } else {
967  throw new DefaultException('failed to open file for reading ' . $filename_source);
968  }
969 
970  return false;
971  }
972 
978  public static function iconv_fallback_int_utf8($charval)
979  {
980  if ($charval < 128) {
981  // 0bbbbbbb
982  $newcharstring = chr($charval);
983  } elseif ($charval < 2048) {
984  // 110bbbbb 10bbbbbb
985  $newcharstring = chr(($charval >> 6) | 0xC0);
986  $newcharstring .= chr(($charval & 0x3F) | 0x80);
987  } elseif ($charval < 65536) {
988  // 1110bbbb 10bbbbbb 10bbbbbb
989  $newcharstring = chr(($charval >> 12) | 0xE0);
990  $newcharstring .= chr(($charval >> 6) | 0xC0);
991  $newcharstring .= chr(($charval & 0x3F) | 0x80);
992  } else {
993  // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
994  $newcharstring = chr(($charval >> 18) | 0xF0);
995  $newcharstring .= chr(($charval >> 12) | 0xC0);
996  $newcharstring .= chr(($charval >> 6) | 0xC0);
997  $newcharstring .= chr(($charval & 0x3F) | 0x80);
998  }
999 
1000  return $newcharstring;
1001  }
1002 
1010  public static function iconv_fallback_iso88591_utf8($string, $bom = false)
1011  {
1012  if (function_exists('utf8_encode')) {
1013  return utf8_encode($string);
1014  }
1015  // utf8_encode() unavailable, use GetId3Core()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
1016  $newcharstring = '';
1017  if ($bom) {
1018  $newcharstring .= "\xEF\xBB\xBF";
1019  }
1020  for ($i = 0; $i < strlen($string); $i++) {
1021  $charval = ord($string{$i});
1022  $newcharstring .= self::iconv_fallback_int_utf8($charval);
1023  }
1024 
1025  return $newcharstring;
1026  }
1027 
1035  public static function iconv_fallback_iso88591_utf16be($string, $bom = false)
1036  {
1037  $newcharstring = '';
1038  if ($bom) {
1039  $newcharstring .= "\xFE\xFF";
1040  }
1041  for ($i = 0; $i < strlen($string); $i++) {
1042  $newcharstring .= "\x00" . $string{$i};
1043  }
1044 
1045  return $newcharstring;
1046  }
1047 
1055  public static function iconv_fallback_iso88591_utf16le($string, $bom = false)
1056  {
1057  $newcharstring = '';
1058  if ($bom) {
1059  $newcharstring .= "\xFF\xFE";
1060  }
1061  for ($i = 0; $i < strlen($string); $i++) {
1062  $newcharstring .= $string{$i} . "\x00";
1063  }
1064 
1065  return $newcharstring;
1066  }
1067 
1074  public static function iconv_fallback_iso88591_utf16($string)
1075  {
1076  return self::iconv_fallback_iso88591_utf16le($string, true);
1077  }
1078 
1085  public static function iconv_fallback_utf8_iso88591($string)
1086  {
1087  if (function_exists('utf8_decode')) {
1088  return utf8_decode($string);
1089  }
1090  // utf8_decode() unavailable, use GetId3Core()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
1091  $newcharstring = '';
1092  $offset = 0;
1093  $stringlength = strlen($string);
1094  while ($offset < $stringlength) {
1095  if ((ord($string{$offset}) | 0x07) == 0xF7) {
1096  // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
1097  $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
1098  ((ord($string{($offset + 1)}) & 0x3F) << 12) &
1099  ((ord($string{($offset + 2)}) & 0x3F) << 6) &
1100  (ord($string{($offset + 3)}) & 0x3F);
1101  $offset += 4;
1102  } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
1103  // 1110bbbb 10bbbbbb 10bbbbbb
1104  $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
1105  ((ord($string{($offset + 1)}) & 0x3F) << 6) &
1106  (ord($string{($offset + 2)}) & 0x3F);
1107  $offset += 3;
1108  } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
1109  // 110bbbbb 10bbbbbb
1110  $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
1111  (ord($string{($offset + 1)}) & 0x3F);
1112  $offset += 2;
1113  } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
1114  // 0bbbbbbb
1115  $charval = ord($string{$offset});
1116  $offset += 1;
1117  } else {
1118  // error? throw some kind of warning here?
1119  $charval = false;
1120  $offset += 1;
1121  }
1122  if ($charval !== false) {
1123  $newcharstring .= (($charval < 256) ? chr($charval) : '?');
1124  }
1125  }
1126 
1127  return $newcharstring;
1128  }
1129 
1138  public static function iconv_fallback_utf8_utf16be($string, $bom = false)
1139  {
1140  $newcharstring = '';
1141  if ($bom) {
1142  $newcharstring .= "\xFE\xFF";
1143  }
1144  $offset = 0;
1145  $stringlength = strlen($string);
1146  while ($offset < $stringlength) {
1147  if ((ord($string{$offset}) | 0x07) == 0xF7) {
1148  // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
1149  $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
1150  ((ord($string{($offset + 1)}) & 0x3F) << 12) &
1151  ((ord($string{($offset + 2)}) & 0x3F) << 6) &
1152  (ord($string{($offset + 3)}) & 0x3F);
1153  $offset += 4;
1154  } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
1155  // 1110bbbb 10bbbbbb 10bbbbbb
1156  $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
1157  ((ord($string{($offset + 1)}) & 0x3F) << 6) &
1158  (ord($string{($offset + 2)}) & 0x3F);
1159  $offset += 3;
1160  } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
1161  // 110bbbbb 10bbbbbb
1162  $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
1163  (ord($string{($offset + 1)}) & 0x3F);
1164  $offset += 2;
1165  } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
1166  // 0bbbbbbb
1167  $charval = ord($string{$offset});
1168  $offset += 1;
1169  } else {
1170  // error? throw some kind of warning here?
1171  $charval = false;
1172  $offset += 1;
1173  }
1174  if ($charval !== false) {
1175  $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval,
1176  2) : "\x00" . '?');
1177  }
1178  }
1179 
1180  return $newcharstring;
1181  }
1182 
1190  public static function iconv_fallback_utf8_utf16le($string, $bom = false)
1191  {
1192  $newcharstring = '';
1193  if ($bom) {
1194  $newcharstring .= "\xFF\xFE";
1195  }
1196  $offset = 0;
1197  $stringlength = strlen($string);
1198  while ($offset < $stringlength) {
1199  if ((ord($string{$offset}) | 0x07) == 0xF7) {
1200  // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
1201  $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
1202  ((ord($string{($offset + 1)}) & 0x3F) << 12) &
1203  ((ord($string{($offset + 2)}) & 0x3F) << 6) &
1204  (ord($string{($offset + 3)}) & 0x3F);
1205  $offset += 4;
1206  } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
1207  // 1110bbbb 10bbbbbb 10bbbbbb
1208  $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
1209  ((ord($string{($offset + 1)}) & 0x3F) << 6) &
1210  (ord($string{($offset + 2)}) & 0x3F);
1211  $offset += 3;
1212  } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
1213  // 110bbbbb 10bbbbbb
1214  $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) &
1215  (ord($string{($offset + 1)}) & 0x3F);
1216  $offset += 2;
1217  } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
1218  // 0bbbbbbb
1219  $charval = ord($string{$offset});
1220  $offset += 1;
1221  } else {
1222  // error? maybe throw some warning here?
1223  $charval = false;
1224  $offset += 1;
1225  }
1226  if ($charval !== false) {
1227  $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval,
1228  2) : '?' . "\x00");
1229  }
1230  }
1231 
1232  return $newcharstring;
1233  }
1234 
1241  public static function iconv_fallback_utf8_utf16($string)
1242  {
1243  return self::iconv_fallback_utf8_utf16le($string, true);
1244  }
1245 
1252  public static function iconv_fallback_utf16be_utf8($string)
1253  {
1254  if (substr($string, 0, 2) == "\xFE\xFF") {
1255  // strip BOM
1256  $string = substr($string, 2);
1257  }
1258  $newcharstring = '';
1259  for ($i = 0; $i < strlen($string); $i += 2) {
1260  $charval = self::BigEndian2Int(substr($string, $i, 2));
1261  $newcharstring .= self::iconv_fallback_int_utf8($charval);
1262  }
1263 
1264  return $newcharstring;
1265  }
1266 
1273  public static function iconv_fallback_utf16le_utf8($string)
1274  {
1275  if (substr($string, 0, 2) == "\xFF\xFE") {
1276  // strip BOM
1277  $string = substr($string, 2);
1278  }
1279  $newcharstring = '';
1280  for ($i = 0; $i < strlen($string); $i += 2) {
1281  $charval = self::LittleEndian2Int(substr($string, $i, 2));
1282  $newcharstring .= self::iconv_fallback_int_utf8($charval);
1283  }
1284 
1285  return $newcharstring;
1286  }
1287 
1294  public static function iconv_fallback_utf16be_iso88591($string)
1295  {
1296  if (substr($string, 0, 2) == "\xFE\xFF") {
1297  // strip BOM
1298  $string = substr($string, 2);
1299  }
1300  $newcharstring = '';
1301  for ($i = 0; $i < strlen($string); $i += 2) {
1302  $charval = self::BigEndian2Int(substr($string, $i, 2));
1303  $newcharstring .= (($charval < 256) ? chr($charval) : '?');
1304  }
1305 
1306  return $newcharstring;
1307  }
1308 
1315  public static function iconv_fallback_utf16le_iso88591($string)
1316  {
1317  if (substr($string, 0, 2) == "\xFF\xFE") {
1318  // strip BOM
1319  $string = substr($string, 2);
1320  }
1321  $newcharstring = '';
1322  for ($i = 0; $i < strlen($string); $i += 2) {
1323  $charval = self::LittleEndian2Int(substr($string, $i, 2));
1324  $newcharstring .= (($charval < 256) ? chr($charval) : '?');
1325  }
1326 
1327  return $newcharstring;
1328  }
1329 
1336  public static function iconv_fallback_utf16_iso88591($string)
1337  {
1338  $bom = substr($string, 0, 2);
1339  if ($bom == "\xFE\xFF") {
1340  return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
1341  } elseif ($bom == "\xFF\xFE") {
1342  return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
1343  }
1344 
1345  return $string;
1346  }
1347 
1354  public static function iconv_fallback_utf16_utf8($string)
1355  {
1356  $bom = substr($string, 0, 2);
1357  if ($bom == "\xFE\xFF") {
1358  return self::iconv_fallback_utf16be_utf8(substr($string, 2));
1359  } elseif ($bom == "\xFF\xFE") {
1360  return self::iconv_fallback_utf16le_utf8(substr($string, 2));
1361  }
1362 
1363  return $string;
1364  }
1365 
1375  public static function iconv_fallback($in_charset, $out_charset, $string)
1376  {
1377 
1378  if ($in_charset == $out_charset) {
1379  return $string;
1380  }
1381 
1382  // iconv() availble
1383  if (function_exists('iconv')) {
1384  if ($converted_string = @iconv($in_charset,
1385  $out_charset . '//TRANSLIT', $string)) {
1386  switch ($out_charset) {
1387  case 'ISO-8859-1':
1388  $converted_string = rtrim($converted_string, "\x00");
1389  break;
1390  }
1391 
1392  return $converted_string;
1393  }
1394 
1395  // iconv() may sometimes fail with "illegal character in input string" error message
1396  // and return an empty string, but returning the unconverted string is more useful
1397  return $string;
1398  }
1399 
1400 
1401  // iconv() not available
1402  static $ConversionFunctionList = array();
1403  if (empty($ConversionFunctionList)) {
1404  $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8';
1405  $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16';
1406  $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
1407  $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
1408  $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591';
1409  $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16';
1410  $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be';
1411  $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le';
1412  $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591';
1413  $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8';
1414  $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
1415  $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8';
1416  $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
1417  $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8';
1418  }
1419  if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
1420  $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
1421 
1422  return self::$ConversionFunction($string);
1423  }
1424  throw new DefaultException('PHP does not have iconv() support - cannot convert from ' . $in_charset . ' to ' . $out_charset);
1425  }
1426 
1433  public static function MultiByteCharString2HTML($string,
1434  $charset = 'ISO-8859-1')
1435  {
1436  $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
1437  $HTMLstring = '';
1438 
1439  switch ($charset) {
1440  case '1251':
1441  case '1252':
1442  case '866':
1443  case '932':
1444  case '936':
1445  case '950':
1446  case 'BIG5':
1447  case 'BIG5-HKSCS':
1448  case 'cp1251':
1449  case 'cp1252':
1450  case 'cp866':
1451  case 'EUC-JP':
1452  case 'EUCJP':
1453  case 'GB2312':
1454  case 'ibm866':
1455  case 'ISO-8859-1':
1456  case 'ISO-8859-15':
1457  case 'ISO8859-1':
1458  case 'ISO8859-15':
1459  case 'KOI8-R':
1460  case 'koi8-ru':
1461  case 'koi8r':
1462  case 'Shift_JIS':
1463  case 'SJIS':
1464  case 'win-1251':
1465  case 'Windows-1251':
1466  case 'Windows-1252':
1467  $HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
1468  break;
1469 
1470  case 'UTF-8':
1471  $strlen = strlen($string);
1472  for ($i = 0; $i < $strlen; $i++) {
1473  $char_ord_val = ord($string{$i});
1474  $charval = 0;
1475  if ($char_ord_val < 0x80) {
1476  $charval = $char_ord_val;
1477  } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i + 3 < $strlen) {
1478  $charval = (($char_ord_val & 0x07) << 18);
1479  $charval += ((ord($string{++$i}) & 0x3F) << 12);
1480  $charval += ((ord($string{++$i}) & 0x3F) << 6);
1481  $charval += (ord($string{++$i}) & 0x3F);
1482  } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i + 2 < $strlen) {
1483  $charval = (($char_ord_val & 0x0F) << 12);
1484  $charval += ((ord($string{++$i}) & 0x3F) << 6);
1485  $charval += (ord($string{++$i}) & 0x3F);
1486  } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i + 1 < $strlen) {
1487  $charval = (($char_ord_val & 0x1F) << 6);
1488  $charval += (ord($string{++$i}) & 0x3F);
1489  }
1490  if (($charval >= 32) && ($charval <= 127)) {
1491  $HTMLstring .= htmlentities(chr($charval));
1492  } else {
1493  $HTMLstring .= '&#' . $charval . ';';
1494  }
1495  }
1496  break;
1497 
1498  case 'UTF-16LE':
1499  for ($i = 0; $i < strlen($string); $i += 2) {
1500  $charval = self::LittleEndian2Int(substr($string, $i, 2));
1501  if (($charval >= 32) && ($charval <= 127)) {
1502  $HTMLstring .= chr($charval);
1503  } else {
1504  $HTMLstring .= '&#' . $charval . ';';
1505  }
1506  }
1507  break;
1508 
1509  case 'UTF-16BE':
1510  for ($i = 0; $i < strlen($string); $i += 2) {
1511  $charval = self::BigEndian2Int(substr($string, $i, 2));
1512  if (($charval >= 32) && ($charval <= 127)) {
1513  $HTMLstring .= chr($charval);
1514  } else {
1515  $HTMLstring .= '&#' . $charval . ';';
1516  }
1517  }
1518  break;
1519 
1520  default:
1521  $HTMLstring = 'ERROR: Character set "' . $charset . '" not supported in MultiByteCharString2HTML()';
1522  break;
1523  }
1524 
1525  return $HTMLstring;
1526  }
1527 
1534  public static function RGADnameLookup($namecode)
1535  {
1536  static $RGADname = array();
1537  if (empty($RGADname)) {
1538  $RGADname[0] = 'not set';
1539  $RGADname[1] = 'Track Gain Adjustment';
1540  $RGADname[2] = 'Album Gain Adjustment';
1541  }
1542 
1543  return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
1544  }
1545 
1552  public static function RGADoriginatorLookup($originatorcode)
1553  {
1554  static $RGADoriginator = array();
1555  if (empty($RGADoriginator)) {
1556  $RGADoriginator[0] = 'unspecified';
1557  $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
1558  $RGADoriginator[2] = 'set by user';
1559  $RGADoriginator[3] = 'determined automatically';
1560  }
1561 
1562  return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
1563  }
1564 
1571  public static function RGADadjustmentLookup($rawadjustment, $signbit)
1572  {
1573  $adjustment = $rawadjustment / 10;
1574  if ($signbit == 1) {
1575  $adjustment *= -1;
1576  }
1577 
1578  return (float) $adjustment;
1579  }
1580 
1588  public static function RGADgainString($namecode, $originatorcode,
1589  $replaygain)
1590  {
1591  if ($replaygain < 0) {
1592  $signbit = '1';
1593  } else {
1594  $signbit = '0';
1595  }
1596  $storedreplaygain = intval(round($replaygain * 10));
1597  $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
1598  $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
1599  $gainstring .= $signbit;
1600  $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);
1601 
1602  return $gainstring;
1603  }
1604 
1610  public static function RGADamplitude2dB($amplitude)
1611  {
1612  return 20 * log10($amplitude);
1613  }
1614 
1622  public static function GetDataImageSize($imgData, &$imageinfo)
1623  {
1624  static $tempdir = '';
1625  if (empty($tempdir)) {
1626  // yes this is ugly, feel free to suggest a better way
1627  $getid3_temp = new GetId3Core();
1628  $tempdir = $getid3_temp->tempdir;
1629  unset($getid3_temp);
1630  }
1631  $GetDataImageSize = false;
1632  if ($tempfilename = tempnam($tempdir, 'gI3')) {
1633  if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename,
1634  'wb'))) {
1635  fwrite($tmp, $imgData);
1636  fclose($tmp);
1637  $GetDataImageSize = @GetImageSize($tempfilename, $imageinfo);
1638  }
1639  unlink($tempfilename);
1640  }
1641 
1642  return $GetDataImageSize;
1643  }
1644 
1651  public static function ImageTypesLookup($imagetypeid)
1652  {
1653  static $ImageTypesLookup = array();
1654  if (empty($ImageTypesLookup)) {
1655  $ImageTypesLookup[1] = 'gif';
1656  $ImageTypesLookup[2] = 'jpeg';
1657  $ImageTypesLookup[3] = 'png';
1658  $ImageTypesLookup[4] = 'swf';
1659  $ImageTypesLookup[5] = 'psd';
1660  $ImageTypesLookup[6] = 'bmp';
1661  $ImageTypesLookup[7] = 'tiff (little-endian)';
1662  $ImageTypesLookup[8] = 'tiff (big-endian)';
1663  $ImageTypesLookup[9] = 'jpc';
1664  $ImageTypesLookup[10] = 'jp2';
1665  $ImageTypesLookup[11] = 'jpx';
1666  $ImageTypesLookup[12] = 'jb2';
1667  $ImageTypesLookup[13] = 'swc';
1668  $ImageTypesLookup[14] = 'iff';
1669  }
1670 
1671  return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
1672  }
1673 
1679  public static function CopyTagsToComments(&$ThisFileInfo)
1680  {
1681 
1682  // Copy all entries from ['tags'] into common ['comments']
1683  if (!empty($ThisFileInfo['tags'])) {
1684  foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
1685  foreach ($tagarray as $tagname => $tagdata) {
1686  foreach ($tagdata as $key => $value) {
1687  if (!empty($value)) {
1688  if (empty($ThisFileInfo['comments'][$tagname])) {
1689 
1690  // fall through and append value
1691  } elseif ($tagtype == 'id3v1') {
1692 
1693  $newvaluelength = strlen(trim($value));
1694  foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1695  $oldvaluelength = strlen(trim($existingvalue));
1696  if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue,
1697  0,
1698  $newvaluelength) == trim($value))) {
1699  // new value is identical but shorter-than (or equal-length to) one already in comments - skip
1700  break 2;
1701  }
1702  }
1703  } elseif (!is_array($value)) {
1704 
1705  $newvaluelength = strlen(trim($value));
1706  foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1707  $oldvaluelength = strlen(trim($existingvalue));
1708  if (($newvaluelength > $oldvaluelength) && (substr(trim($value),
1709  0,
1710  strlen($existingvalue)) == $existingvalue)) {
1711  $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
1712  break 2;
1713  }
1714  }
1715  }
1716  if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value),
1717  $ThisFileInfo['comments'][$tagname])) {
1718  $value = (is_string($value) ? trim($value) : $value);
1719  $ThisFileInfo['comments'][$tagname][] = $value;
1720  }
1721  }
1722  }
1723  }
1724  }
1725 
1726  // Copy to ['comments_html']
1727  foreach ($ThisFileInfo['comments'] as $field => $values) {
1728  if ($field == 'picture') {
1729  // pictures can take up a lot of space, and we don't need multiple copies of them
1730  // let there be a single copy in [comments][picture], and not elsewhere
1731  continue;
1732  }
1733  foreach ($values as $index => $value) {
1734  if (is_array($value)) {
1735  $ThisFileInfo['comments_html'][$field][$index] = $value;
1736  } else {
1737  $ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;',
1738  '',
1739  self::MultiByteCharString2HTML($value,
1740  $ThisFileInfo['encoding']));
1741  }
1742  }
1743  }
1744  }
1745 
1746  return true;
1747  }
1748 
1759  public static function EmbeddedLookup($key, $begin, $end, $file, $name)
1760  {
1761 
1762  // Cached
1763  static $cache;
1764  if (isset($cache[$file][$name])) {
1765  return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1766  }
1767 
1768  // Init
1769  $keylength = strlen($key);
1770  $line_count = $end - $begin - 7;
1771 
1772  // Open php file
1773  $fp = fopen($file, 'r');
1774 
1775  // Discard $begin lines
1776  for ($i = 0; $i < ($begin + 3); $i++) {
1777  fgets($fp, 1024);
1778  }
1779 
1780  // Loop thru line
1781  while (0 < $line_count--) {
1782 
1783  // Read line
1784  $line = ltrim(fgets($fp, 1024), "\t ");
1785 
1786  // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
1787  //$keycheck = substr($line, 0, $keylength);
1788  //if ($key == $keycheck) {
1789  // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
1790  // break;
1791  //}
1792  // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
1793  //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
1794  $explodedLine = explode("\t", $line, 2);
1795  $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : '');
1796  $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
1797  $cache[$file][$name][$ThisKey] = trim($ThisValue);
1798  }
1799 
1800  // Close and return
1801  fclose($fp);
1802 
1803  return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
1804  }
1805 
1811  public static function trimNullByte($string)
1812  {
1813  return trim($string, "\x00");
1814  }
1815 
1823  public static function toCamelCase($origin, $cahrToReplace = '_', $capitaliseFirstChar = false)
1824  {
1825  if ($capitaliseFirstChar) {
1826  $origin = ucfirst($origin);
1827  }
1828  $func = create_function('$c', 'return strtoupper($c[1]);');
1829 
1830  return preg_replace_callback('/' . $cahrToReplace . '([a-z])/', $func, $origin);
1831  }
1832 }
static BigEndian2Bin($byteword)
Definition: Helper.php:423
static GetDataImageSize($imgData, &$imageinfo)
string $tempdir
Definition: Helper.php:1622
static DateMac2Unix($macdate)
Definition: Helper.php:671
static CreateDeepArray($ArrayPath, $Separator, $Value)
Definition: Helper.php:726
$size
Definition: RandomTest.php:79
static iconv_fallback_utf8_utf16($string)
UTF-8 => UTF-16LE (BOM)
Definition: Helper.php:1241
static Float2String($floatvalue, $bits)
Definition: Helper.php:237
static Float2BinaryDecimal($floatvalue)
Definition: Helper.php:214
static iconv_fallback_utf8_utf16be($string, $bom=false)
UTF-8 => UTF-16BE.
Definition: Helper.php:1138
static XML2array($XMLstring)
Definition: Helper.php:798
static BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false)
Definition: Helper.php:444
static iconv_fallback_utf16le_utf8($string)
UTF-16LE => UTF-8.
Definition: Helper.php:1273
static ksort_recursive(&$theArray)
Definition: Helper.php:610
static iconv_fallback_utf8_iso88591($string)
UTF-8 => ISO-8859-1.
Definition: Helper.php:1085
static EmbeddedLookup($key, $begin, $end, $file, $name)
type $cache
Definition: Helper.php:1759
$result
static iconv_fallback_utf16_utf8($string)
UTF-16 (BOM) => UTF-8.
Definition: Helper.php:1354
static PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8')
Definition: Helper.php:36
static DecimalBinary2Float($binarynumerator)
Definition: Helper.php:165
static MultiByteCharString2HTML($string, $charset='ISO-8859-1')
Definition: Helper.php:1433
static CopyTagsToComments(&$ThisFileInfo)
Definition: Helper.php:1679
static iconv_fallback_utf16be_utf8($string)
UTF-16BE => UTF-8.
Definition: Helper.php:1252
static array_min($arraydata, $returnkey=false)
Definition: Helper.php:777
static iconv_fallback_iso88591_utf8($string, $bom=false)
ISO-8859-1 => UTF-8.
Definition: Helper.php:1010
static Dec2Bin($number)
Definition: Helper.php:472
Add rich text string
The name of the decorator.
static BigEndian2Float($byteword)
ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic.
Definition: Helper.php:290
static iconv_fallback_iso88591_utf16be($string, $bom=false)
ISO-8859-1 => UTF-16BE.
Definition: Helper.php:1035
static RGADamplitude2dB($amplitude)
Definition: Helper.php:1610
static toCamelCase($origin, $cahrToReplace='_', $capitaliseFirstChar=false)
Definition: Helper.php:1823
static fileextension($filename, $numextensions=1)
Definition: Helper.php:628
static iconv_fallback_iso88591_utf16le($string, $bom=false)
ISO-8859-1 => UTF-16LE.
Definition: Helper.php:1055
static FixedPoint2_30($rawdata)
Definition: Helper.php:709
static iconv_fallback_utf16_iso88591($string)
UTF-16 (BOM) => ISO-8859-1.
Definition: Helper.php:1336
static SimpleXMLelement2array($XMLobject)
Definition: Helper.php:816
static trunc($floatnumber)
Definition: Helper.php:67
static LittleEndian2String($number, $minbytes=1, $synchsafe=false)
Definition: Helper.php:538
GetId3() by James Heinrich info@getid3.org //.
Definition: Helper.php:26
static environmentIsWindows()
const FREAD_BUFFER_SIZE
Definition: GetId3Core.php:63
GetId3() by James Heinrich info@getid3.org //.
Definition: GetId3Core.php:25
static RGADadjustmentLookup($rawadjustment, $signbit)
Definition: Helper.php:1571
static iconv_fallback_int_utf8($charval)
Definition: Helper.php:978
static RGADnameLookup($namecode)
array $RGADname
Definition: Helper.php:1534
static ImageTypesLookup($imagetypeid)
array $ImageTypesLookup
Definition: Helper.php:1651
static CastAsInt($floatnum)
Definition: Helper.php:107
Create styles array
The data for the language used.
static RGADoriginatorLookup($originatorcode)
array $RGADoriginator
Definition: Helper.php:1552
static array_merge_clobber($array1, $array2)
Definition: Helper.php:561
static trimNullByte($string)
Definition: Helper.php:1811
static iconv_fallback_iso88591_utf16($string)
ISO-8859-1 => UTF-16LE (BOM)
Definition: Helper.php:1074
static iconv_fallback_utf8_utf16le($string, $bom=false)
UTF-8 => UTF-16LE.
Definition: Helper.php:1190
static FixedPoint8_8($rawdata)
Definition: Helper.php:683
static iconv_fallback_utf16be_iso88591($string)
UTF-16BE => ISO-8859-1.
Definition: Helper.php:1294
static RGADgainString($namecode, $originatorcode, $replaygain)
Definition: Helper.php:1588
static LittleEndian2Int($byteword, $signed=false)
Definition: Helper.php:413
static BigEndian2Int($byteword, $synchsafe=false, $signed=false)
Definition: Helper.php:374
static iconv_fallback_utf16le_iso88591($string)
UTF-16LE => ISO-8859-1.
Definition: Helper.php:1315
static DecimalizeFraction($fraction)
Definition: Helper.php:153
static CopyFileParts($filename_source, $filename_dest, $offset, $length)
Definition: Helper.php:938
static intValueSupported($num)
null $hasINT64
Definition: Helper.php:130
static PlaytimeString($seconds)
Definition: Helper.php:651
if(!file_exists("$old.txt")) if($old===$new) if(file_exists("$new.txt")) $file
static safe_inc(&$variable, $increment=1)
Definition: Helper.php:91
static Bin2String($binstring)
Definition: Helper.php:519
static Bin2Dec($binstring, $signed=false)
Definition: Helper.php:496
static array_merge_noclobber($array1, $array2)
Definition: Helper.php:587
defined( 'APPLICATION_ENV')||define( 'APPLICATION_ENV'
Definition: bootstrap.php:27
static FixedPoint16_16($rawdata)
Definition: Helper.php:696
static getHelperAppsDir()
Definition: GetId3Core.php:186
static array_max($arraydata, $returnkey=false)
Definition: Helper.php:755
static hash_data($file, $offset, $end, $algorithm)
self::md5_data() - returns md5sum for a file from startuing position to absolute end position ...
Definition: Helper.php:841
static LittleEndian2Float($byteword)
Definition: Helper.php:277
static iconv_fallback($in_charset, $out_charset, $string)
array $ConversionFunctionList
Definition: Helper.php:1375
static NormalizeBinaryPoint($binarypointnumber, $maxbits=52)
Definition: Helper.php:180