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1 <?php 2 ///////////////////////////////////////////////////////////////// 3 /// getID3() by James Heinrich <info@getid3.org> // 4 // available at http://getid3.sourceforge.net // 5 // or http://www.getid3.org // 6 ///////////////////////////////////////////////////////////////// 7 // // 8 // getid3.lib.php - part of getID3() // 9 // See readme.txt for more details // 10 // /// 11 ///////////////////////////////////////////////////////////////// 12 13 14 class getid3_lib 15 { 16 17 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') { 18 $returnstring = ''; 19 for ($i = 0; $i < strlen($string); $i++) { 20 if ($hex) { 21 $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT); 22 } else { 23 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : '¤'); 24 } 25 if ($spaces) { 26 $returnstring .= ' '; 27 } 28 } 29 if (!empty($htmlencoding)) { 30 if ($htmlencoding === true) { 31 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean 32 } 33 $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding); 34 } 35 return $returnstring; 36 } 37 38 public static function trunc($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); 45 } else { 46 $truncatednumber = 0; 47 } 48 if (self::intValueSupported($truncatednumber)) { 49 $truncatednumber = (int) $truncatednumber; 50 } 51 return $truncatednumber; 52 } 53 54 55 public static function safe_inc(&$variable, $increment=1) { 56 if (isset($variable)) { 57 $variable += $increment; 58 } else { 59 $variable = $increment; 60 } 61 return true; 62 } 63 64 public static function CastAsInt($floatnum) { 65 // convert to float if not already 66 $floatnum = (float) $floatnum; 67 68 // convert a float to type int, only if possible 69 if (self::trunc($floatnum) == $floatnum) { 70 // it's not floating point 71 if (self::intValueSupported($floatnum)) { 72 // it's within int range 73 $floatnum = (int) $floatnum; 74 } 75 } 76 return $floatnum; 77 } 78 79 public static function intValueSupported($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); 86 } 87 } 88 // if integers are 64-bit - no other check required 89 if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { 90 return true; 91 } 92 return false; 93 } 94 95 public static function DecimalizeFraction($fraction) { 96 list($numerator, $denominator) = explode('/', $fraction); 97 return $numerator / ($denominator ? $denominator : 1); 98 } 99 100 101 public static function DecimalBinary2Float($binarynumerator) { 102 $numerator = self::Bin2Dec($binarynumerator); 103 $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator))); 104 return ($numerator / $denominator); 105 } 106 107 108 public static function NormalizeBinaryPoint($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; 114 } 115 $exponent = 0; 116 while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) { 117 if (substr($binarypointnumber, 1, 1) == '.') { 118 $exponent--; 119 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3); 120 } else { 121 $pointpos = strpos($binarypointnumber, '.'); 122 $exponent += ($pointpos - 1); 123 $binarypointnumber = str_replace('.', '', $binarypointnumber); 124 $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1); 125 } 126 } 127 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT); 128 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent); 129 } 130 131 132 public static function Float2BinaryDecimal($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)) { 139 $floatpart *= 2; 140 $pointbitstring .= (string) self::trunc($floatpart); 141 $floatpart -= self::trunc($floatpart); 142 } 143 $binarypointnumber = decbin($intpart).'.'.$pointbitstring; 144 return $binarypointnumber; 145 } 146 147 148 public static function Float2String($floatvalue, $bits) { 149 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html 150 switch ($bits) { 151 case 32: 152 $exponentbits = 8; 153 $fractionbits = 23; 154 break; 155 156 case 64: 157 $exponentbits = 11; 158 $fractionbits = 52; 159 break; 160 161 default: 162 return false; 163 break; 164 } 165 if ($floatvalue >= 0) { 166 $signbit = '0'; 167 } else { 168 $signbit = '1'; 169 } 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), $fractionbits, '0', STR_PAD_RIGHT); 174 175 return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false); 176 } 177 178 179 public static function LittleEndian2Float($byteword) { 180 return self::BigEndian2Float(strrev($byteword)); 181 } 182 183 184 public static function BigEndian2Float($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 188 189 $bitword = self::BigEndian2Bin($byteword); 190 if (!$bitword) { 191 return 0; 192 } 193 $signbit = $bitword{0}; 194 195 switch (strlen($byteword) * 8) { 196 case 32: 197 $exponentbits = 8; 198 $fractionbits = 23; 199 break; 200 201 case 64: 202 $exponentbits = 11; 203 $fractionbits = 52; 204 break; 205 206 case 80: 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') { 216 $floatvalue *= -1; 217 } 218 return $floatvalue; 219 break; 220 221 default: 222 return false; 223 break; 224 } 225 $exponentstring = substr($bitword, 1, $exponentbits); 226 $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits); 227 $exponent = self::Bin2Dec($exponentstring); 228 $fraction = self::Bin2Dec($fractionstring); 229 230 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) { 231 // Not a Number 232 $floatvalue = false; 233 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) { 234 if ($signbit == '1') { 235 $floatvalue = '-infinity'; 236 } else { 237 $floatvalue = '+infinity'; 238 } 239 } elseif (($exponent == 0) && ($fraction == 0)) { 240 if ($signbit == '1') { 241 $floatvalue = -0; 242 } else { 243 $floatvalue = 0; 244 } 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') { 250 $floatvalue *= -1; 251 } 252 } elseif ($exponent != 0) { 253 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring)); 254 if ($signbit == '1') { 255 $floatvalue *= -1; 256 } 257 } 258 return (float) $floatvalue; 259 } 260 261 262 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) { 263 $intvalue = 0; 264 $bytewordlen = strlen($byteword); 265 if ($bytewordlen == 0) { 266 return false; 267 } 268 for ($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); 272 } else { 273 $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i)); 274 } 275 } 276 if ($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 & ($signMaskBit - 1)); 282 } 283 } else { 284 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()'); 285 break; 286 } 287 } 288 return self::CastAsInt($intvalue); 289 } 290 291 292 public static function LittleEndian2Int($byteword, $signed=false) { 293 return self::BigEndian2Int(strrev($byteword), false, $signed); 294 } 295 296 297 public static function BigEndian2Bin($byteword) { 298 $binvalue = ''; 299 $bytewordlen = strlen($byteword); 300 for ($i = 0; $i < $bytewordlen; $i++) { 301 $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT); 302 } 303 return $binvalue; 304 } 305 306 307 public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) { 308 if ($number < 0) { 309 throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers'); 310 } 311 $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF); 312 $intstring = ''; 313 if ($signed) { 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()'); 316 } 317 $number = $number & (0x80 << (8 * ($minbytes - 1))); 318 } 319 while ($number != 0) { 320 $quotient = ($number / ($maskbyte + 1)); 321 $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring; 322 $number = floor($quotient); 323 } 324 return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT); 325 } 326 327 328 public static function Dec2Bin($number) { 329 while ($number >= 256) { 330 $bytes[] = (($number / 256) - (floor($number / 256))) * 256; 331 $number = floor($number / 256); 332 } 333 $bytes[] = $number; 334 $binstring = ''; 335 for ($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; 337 } 338 return $binstring; 339 } 340 341 342 public static function Bin2Dec($binstring, $signed=false) { 343 $signmult = 1; 344 if ($signed) { 345 if ($binstring{0} == '1') { 346 $signmult = -1; 347 } 348 $binstring = substr($binstring, 1); 349 } 350 $decvalue = 0; 351 for ($i = 0; $i < strlen($binstring); $i++) { 352 $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); 353 } 354 return self::CastAsInt($decvalue * $signmult); 355 } 356 357 358 public static function Bin2String($binstring) { 359 // return 'hi' for input of '0110100001101001' 360 $string = ''; 361 $binstringreversed = strrev($binstring); 362 for ($i = 0; $i < strlen($binstringreversed); $i += 8) { 363 $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string; 364 } 365 return $string; 366 } 367 368 369 public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) { 370 $intstring = ''; 371 while ($number > 0) { 372 if ($synchsafe) { 373 $intstring = $intstring.chr($number & 127); 374 $number >>= 7; 375 } else { 376 $intstring = $intstring.chr($number & 255); 377 $number >>= 8; 378 } 379 } 380 return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT); 381 } 382 383 384 public static function array_merge_clobber($array1, $array2) { 385 // written by kcØhireability*com 386 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php 387 if (!is_array($array1) || !is_array($array2)) { 388 return false; 389 } 390 $newarray = $array1; 391 foreach ($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); 394 } else { 395 $newarray[$key] = $val; 396 } 397 } 398 return $newarray; 399 } 400 401 402 public static function array_merge_noclobber($array1, $array2) { 403 if (!is_array($array1) || !is_array($array2)) { 404 return false; 405 } 406 $newarray = $array1; 407 foreach ($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; 412 } 413 } 414 return $newarray; 415 } 416 417 418 public static function ksort_recursive(&$theArray) { 419 ksort($theArray); 420 foreach ($theArray as $key => $value) { 421 if (is_array($value)) { 422 self::ksort_recursive($theArray[$key]); 423 } 424 } 425 return true; 426 } 427 428 public static function fileextension($filename, $numextensions=1) { 429 if (strstr($filename, '.')) { 430 $reversedfilename = strrev($filename); 431 $offset = 0; 432 for ($i = 0; $i < $numextensions; $i++) { 433 $offset = strpos($reversedfilename, '.', $offset + 1); 434 if ($offset === false) { 435 return ''; 436 } 437 } 438 return strrev(substr($reversedfilename, 0, $offset)); 439 } 440 return ''; 441 } 442 443 444 public static function PlaytimeString($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($S, 2, 0, STR_PAD_LEFT); 451 } 452 453 454 public static function DateMac2Unix($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($macdate - 2082844800); 458 } 459 460 461 public static function FixedPoint8_8($rawdata) { 462 return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8)); 463 } 464 465 466 public static function FixedPoint16_16($rawdata) { 467 return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16)); 468 } 469 470 471 public static function FixedPoint2_30($rawdata) { 472 $binarystring = self::BigEndian2Bin($rawdata); 473 return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30)); 474 } 475 476 477 public static function CreateDeepArray($ArrayPath, $Separator, $Value) { 478 // assigns $Value to a nested array path: 479 // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt') 480 // is the same as: 481 // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt')))); 482 // or 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); 487 } else { 488 $ReturnedArray[$ArrayPath] = $Value; 489 } 490 return $ReturnedArray; 491 } 492 493 public static function array_max($arraydata, $returnkey=false) { 494 $maxvalue = false; 495 $maxkey = false; 496 foreach ($arraydata as $key => $value) { 497 if (!is_array($value)) { 498 if ($value > $maxvalue) { 499 $maxvalue = $value; 500 $maxkey = $key; 501 } 502 } 503 } 504 return ($returnkey ? $maxkey : $maxvalue); 505 } 506 507 public static function array_min($arraydata, $returnkey=false) { 508 $minvalue = false; 509 $minkey = false; 510 foreach ($arraydata as $key => $value) { 511 if (!is_array($value)) { 512 if ($value > $minvalue) { 513 $minvalue = $value; 514 $minkey = $key; 515 } 516 } 517 } 518 return ($returnkey ? $minkey : $minvalue); 519 } 520 521 public static function XML2array($XMLstring) { 522 if (function_exists('simplexml_load_string')) { 523 if (function_exists('get_object_vars')) { 524 $XMLobject = simplexml_load_string($XMLstring); 525 return self::SimpleXMLelement2array($XMLobject); 526 } 527 } 528 return false; 529 } 530 531 public static function SimpleXMLelement2array($XMLobject) { 532 if (!is_object($XMLobject) && !is_array($XMLobject)) { 533 return $XMLobject; 534 } 535 $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject); 536 foreach ($XMLarray as $key => $value) { 537 $XMLarray[$key] = self::SimpleXMLelement2array($value); 538 } 539 return $XMLarray; 540 } 541 542 543 // Allan Hansen <ahØartemis*dk> 544 // self::md5_data() - returns md5sum for a file from startuing position to absolute end position 545 public static function hash_data($file, $offset, $end, $algorithm) { 546 static $tempdir = ''; 547 if (!self::intValueSupported($end)) { 548 return false; 549 } 550 switch ($algorithm) { 551 case 'md5': 552 $hash_function = 'md5_file'; 553 $unix_call = 'md5sum'; 554 $windows_call = 'md5sum.exe'; 555 $hash_length = 32; 556 break; 557 558 case 'sha1': 559 $hash_function = 'sha1_file'; 560 $unix_call = 'sha1sum'; 561 $windows_call = 'sha1sum.exe'; 562 $hash_length = 40; 563 break; 564 565 default: 566 throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()'); 567 break; 568 } 569 $size = $end - $offset; 570 while (true) { 571 if (GETID3_OS_ISWINDOWS) { 572 573 // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data 574 // Fall back to create-temp-file method: 575 if ($algorithm == 'sha1') { 576 break; 577 } 578 579 $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call); 580 foreach ($RequiredFiles as $required_file) { 581 if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) { 582 // helper apps not available - fall back to old method 583 break 2; 584 } 585 } 586 $commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' | '; 587 $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | '; 588 $commandline .= GETID3_HELPERAPPSDIR.$windows_call; 589 590 } else { 591 592 $commandline = 'head -c'.$end.' '.escapeshellarg($file).' | '; 593 $commandline .= 'tail -c'.$size.' | '; 594 $commandline .= $unix_call; 595 596 } 597 if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) { 598 //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm'); 599 break; 600 } 601 return substr(`$commandline`, 0, $hash_length); 602 } 603 604 if (empty($tempdir)) { 605 // yes this is ugly, feel free to suggest a better way 606 require_once(dirname(__FILE__).'/getid3.php'); 607 $getid3_temp = new getID3(); 608 $tempdir = $getid3_temp->tempdir; 609 unset($getid3_temp); 610 } 611 // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir 612 if (($data_filename = tempnam($tempdir, 'gI3')) === false) { 613 // can't find anywhere to create a temp file, just fail 614 return false; 615 } 616 617 // Init 618 $result = false; 619 620 // copy parts of file 621 try { 622 self::CopyFileParts($file, $data_filename, $offset, $end - $offset); 623 $result = $hash_function($data_filename); 624 } catch (Exception $e) { 625 throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage()); 626 } 627 unlink($data_filename); 628 return $result; 629 } 630 631 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) { 632 if (!self::intValueSupported($offset + $length)) { 633 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit'); 634 } 635 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) { 636 if (($fp_dest = fopen($filename_dest, 'wb'))) { 637 if (fseek($fp_src, $offset, SEEK_SET) == 0) { 638 $byteslefttowrite = $length; 639 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) { 640 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite); 641 $byteslefttowrite -= $byteswritten; 642 } 643 return true; 644 } else { 645 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source); 646 } 647 fclose($fp_dest); 648 } else { 649 throw new Exception('failed to create file for writing '.$filename_dest); 650 } 651 fclose($fp_src); 652 } else { 653 throw new Exception('failed to open file for reading '.$filename_source); 654 } 655 return false; 656 } 657 658 public static function iconv_fallback_int_utf8($charval) { 659 if ($charval < 128) { 660 // 0bbbbbbb 661 $newcharstring = chr($charval); 662 } elseif ($charval < 2048) { 663 // 110bbbbb 10bbbbbb 664 $newcharstring = chr(($charval >> 6) | 0xC0); 665 $newcharstring .= chr(($charval & 0x3F) | 0x80); 666 } elseif ($charval < 65536) { 667 // 1110bbbb 10bbbbbb 10bbbbbb 668 $newcharstring = chr(($charval >> 12) | 0xE0); 669 $newcharstring .= chr(($charval >> 6) | 0xC0); 670 $newcharstring .= chr(($charval & 0x3F) | 0x80); 671 } else { 672 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 673 $newcharstring = chr(($charval >> 18) | 0xF0); 674 $newcharstring .= chr(($charval >> 12) | 0xC0); 675 $newcharstring .= chr(($charval >> 6) | 0xC0); 676 $newcharstring .= chr(($charval & 0x3F) | 0x80); 677 } 678 return $newcharstring; 679 } 680 681 // ISO-8859-1 => UTF-8 682 public static function iconv_fallback_iso88591_utf8($string, $bom=false) { 683 if (function_exists('utf8_encode')) { 684 return utf8_encode($string); 685 } 686 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 687 $newcharstring = ''; 688 if ($bom) { 689 $newcharstring .= "\xEF\xBB\xBF"; 690 } 691 for ($i = 0; $i < strlen($string); $i++) { 692 $charval = ord($string{$i}); 693 $newcharstring .= self::iconv_fallback_int_utf8($charval); 694 } 695 return $newcharstring; 696 } 697 698 // ISO-8859-1 => UTF-16BE 699 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) { 700 $newcharstring = ''; 701 if ($bom) { 702 $newcharstring .= "\xFE\xFF"; 703 } 704 for ($i = 0; $i < strlen($string); $i++) { 705 $newcharstring .= "\x00".$string{$i}; 706 } 707 return $newcharstring; 708 } 709 710 // ISO-8859-1 => UTF-16LE 711 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) { 712 $newcharstring = ''; 713 if ($bom) { 714 $newcharstring .= "\xFF\xFE"; 715 } 716 for ($i = 0; $i < strlen($string); $i++) { 717 $newcharstring .= $string{$i}."\x00"; 718 } 719 return $newcharstring; 720 } 721 722 // ISO-8859-1 => UTF-16LE (BOM) 723 public static function iconv_fallback_iso88591_utf16($string) { 724 return self::iconv_fallback_iso88591_utf16le($string, true); 725 } 726 727 // UTF-8 => ISO-8859-1 728 public static function iconv_fallback_utf8_iso88591($string) { 729 if (function_exists('utf8_decode')) { 730 return utf8_decode($string); 731 } 732 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 733 $newcharstring = ''; 734 $offset = 0; 735 $stringlength = strlen($string); 736 while ($offset < $stringlength) { 737 if ((ord($string{$offset}) | 0x07) == 0xF7) { 738 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 739 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & 740 ((ord($string{($offset + 1)}) & 0x3F) << 12) & 741 ((ord($string{($offset + 2)}) & 0x3F) << 6) & 742 (ord($string{($offset + 3)}) & 0x3F); 743 $offset += 4; 744 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { 745 // 1110bbbb 10bbbbbb 10bbbbbb 746 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & 747 ((ord($string{($offset + 1)}) & 0x3F) << 6) & 748 (ord($string{($offset + 2)}) & 0x3F); 749 $offset += 3; 750 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { 751 // 110bbbbb 10bbbbbb 752 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & 753 (ord($string{($offset + 1)}) & 0x3F); 754 $offset += 2; 755 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { 756 // 0bbbbbbb 757 $charval = ord($string{$offset}); 758 $offset += 1; 759 } else { 760 // error? throw some kind of warning here? 761 $charval = false; 762 $offset += 1; 763 } 764 if ($charval !== false) { 765 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 766 } 767 } 768 return $newcharstring; 769 } 770 771 // UTF-8 => UTF-16BE 772 public static function iconv_fallback_utf8_utf16be($string, $bom=false) { 773 $newcharstring = ''; 774 if ($bom) { 775 $newcharstring .= "\xFE\xFF"; 776 } 777 $offset = 0; 778 $stringlength = strlen($string); 779 while ($offset < $stringlength) { 780 if ((ord($string{$offset}) | 0x07) == 0xF7) { 781 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 782 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & 783 ((ord($string{($offset + 1)}) & 0x3F) << 12) & 784 ((ord($string{($offset + 2)}) & 0x3F) << 6) & 785 (ord($string{($offset + 3)}) & 0x3F); 786 $offset += 4; 787 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { 788 // 1110bbbb 10bbbbbb 10bbbbbb 789 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & 790 ((ord($string{($offset + 1)}) & 0x3F) << 6) & 791 (ord($string{($offset + 2)}) & 0x3F); 792 $offset += 3; 793 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { 794 // 110bbbbb 10bbbbbb 795 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & 796 (ord($string{($offset + 1)}) & 0x3F); 797 $offset += 2; 798 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { 799 // 0bbbbbbb 800 $charval = ord($string{$offset}); 801 $offset += 1; 802 } else { 803 // error? throw some kind of warning here? 804 $charval = false; 805 $offset += 1; 806 } 807 if ($charval !== false) { 808 $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?'); 809 } 810 } 811 return $newcharstring; 812 } 813 814 // UTF-8 => UTF-16LE 815 public static function iconv_fallback_utf8_utf16le($string, $bom=false) { 816 $newcharstring = ''; 817 if ($bom) { 818 $newcharstring .= "\xFF\xFE"; 819 } 820 $offset = 0; 821 $stringlength = strlen($string); 822 while ($offset < $stringlength) { 823 if ((ord($string{$offset}) | 0x07) == 0xF7) { 824 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 825 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & 826 ((ord($string{($offset + 1)}) & 0x3F) << 12) & 827 ((ord($string{($offset + 2)}) & 0x3F) << 6) & 828 (ord($string{($offset + 3)}) & 0x3F); 829 $offset += 4; 830 } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { 831 // 1110bbbb 10bbbbbb 10bbbbbb 832 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & 833 ((ord($string{($offset + 1)}) & 0x3F) << 6) & 834 (ord($string{($offset + 2)}) & 0x3F); 835 $offset += 3; 836 } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { 837 // 110bbbbb 10bbbbbb 838 $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & 839 (ord($string{($offset + 1)}) & 0x3F); 840 $offset += 2; 841 } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { 842 // 0bbbbbbb 843 $charval = ord($string{$offset}); 844 $offset += 1; 845 } else { 846 // error? maybe throw some warning here? 847 $charval = false; 848 $offset += 1; 849 } 850 if ($charval !== false) { 851 $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00"); 852 } 853 } 854 return $newcharstring; 855 } 856 857 // UTF-8 => UTF-16LE (BOM) 858 public static function iconv_fallback_utf8_utf16($string) { 859 return self::iconv_fallback_utf8_utf16le($string, true); 860 } 861 862 // UTF-16BE => UTF-8 863 public static function iconv_fallback_utf16be_utf8($string) { 864 if (substr($string, 0, 2) == "\xFE\xFF") { 865 // strip BOM 866 $string = substr($string, 2); 867 } 868 $newcharstring = ''; 869 for ($i = 0; $i < strlen($string); $i += 2) { 870 $charval = self::BigEndian2Int(substr($string, $i, 2)); 871 $newcharstring .= self::iconv_fallback_int_utf8($charval); 872 } 873 return $newcharstring; 874 } 875 876 // UTF-16LE => UTF-8 877 public static function iconv_fallback_utf16le_utf8($string) { 878 if (substr($string, 0, 2) == "\xFF\xFE") { 879 // strip BOM 880 $string = substr($string, 2); 881 } 882 $newcharstring = ''; 883 for ($i = 0; $i < strlen($string); $i += 2) { 884 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 885 $newcharstring .= self::iconv_fallback_int_utf8($charval); 886 } 887 return $newcharstring; 888 } 889 890 // UTF-16BE => ISO-8859-1 891 public static function iconv_fallback_utf16be_iso88591($string) { 892 if (substr($string, 0, 2) == "\xFE\xFF") { 893 // strip BOM 894 $string = substr($string, 2); 895 } 896 $newcharstring = ''; 897 for ($i = 0; $i < strlen($string); $i += 2) { 898 $charval = self::BigEndian2Int(substr($string, $i, 2)); 899 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 900 } 901 return $newcharstring; 902 } 903 904 // UTF-16LE => ISO-8859-1 905 public static function iconv_fallback_utf16le_iso88591($string) { 906 if (substr($string, 0, 2) == "\xFF\xFE") { 907 // strip BOM 908 $string = substr($string, 2); 909 } 910 $newcharstring = ''; 911 for ($i = 0; $i < strlen($string); $i += 2) { 912 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 913 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 914 } 915 return $newcharstring; 916 } 917 918 // UTF-16 (BOM) => ISO-8859-1 919 public static function iconv_fallback_utf16_iso88591($string) { 920 $bom = substr($string, 0, 2); 921 if ($bom == "\xFE\xFF") { 922 return self::iconv_fallback_utf16be_iso88591(substr($string, 2)); 923 } elseif ($bom == "\xFF\xFE") { 924 return self::iconv_fallback_utf16le_iso88591(substr($string, 2)); 925 } 926 return $string; 927 } 928 929 // UTF-16 (BOM) => UTF-8 930 public static function iconv_fallback_utf16_utf8($string) { 931 $bom = substr($string, 0, 2); 932 if ($bom == "\xFE\xFF") { 933 return self::iconv_fallback_utf16be_utf8(substr($string, 2)); 934 } elseif ($bom == "\xFF\xFE") { 935 return self::iconv_fallback_utf16le_utf8(substr($string, 2)); 936 } 937 return $string; 938 } 939 940 public static function iconv_fallback($in_charset, $out_charset, $string) { 941 942 if ($in_charset == $out_charset) { 943 return $string; 944 } 945 946 // iconv() availble 947 if (function_exists('iconv')) { 948 if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) { 949 switch ($out_charset) { 950 case 'ISO-8859-1': 951 $converted_string = rtrim($converted_string, "\x00"); 952 break; 953 } 954 return $converted_string; 955 } 956 957 // iconv() may sometimes fail with "illegal character in input string" error message 958 // and return an empty string, but returning the unconverted string is more useful 959 return $string; 960 } 961 962 963 // iconv() not available 964 static $ConversionFunctionList = array(); 965 if (empty($ConversionFunctionList)) { 966 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8'; 967 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16'; 968 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be'; 969 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le'; 970 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591'; 971 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16'; 972 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be'; 973 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le'; 974 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591'; 975 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8'; 976 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591'; 977 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8'; 978 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591'; 979 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8'; 980 } 981 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) { 982 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)]; 983 return self::$ConversionFunction($string); 984 } 985 throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset); 986 } 987 988 989 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') { 990 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string 991 $HTMLstring = ''; 992 993 switch ($charset) { 994 case '1251': 995 case '1252': 996 case '866': 997 case '932': 998 case '936': 999 case '950': 1000 case 'BIG5': 1001 case 'BIG5-HKSCS': 1002 case 'cp1251': 1003 case 'cp1252': 1004 case 'cp866': 1005 case 'EUC-JP': 1006 case 'EUCJP': 1007 case 'GB2312': 1008 case 'ibm866': 1009 case 'ISO-8859-1': 1010 case 'ISO-8859-15': 1011 case 'ISO8859-1': 1012 case 'ISO8859-15': 1013 case 'KOI8-R': 1014 case 'koi8-ru': 1015 case 'koi8r': 1016 case 'Shift_JIS': 1017 case 'SJIS': 1018 case 'win-1251': 1019 case 'Windows-1251': 1020 case 'Windows-1252': 1021 $HTMLstring = htmlentities($string, ENT_COMPAT, $charset); 1022 break; 1023 1024 case 'UTF-8': 1025 $strlen = strlen($string); 1026 for ($i = 0; $i < $strlen; $i++) { 1027 $char_ord_val = ord($string{$i}); 1028 $charval = 0; 1029 if ($char_ord_val < 0x80) { 1030 $charval = $char_ord_val; 1031 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) { 1032 $charval = (($char_ord_val & 0x07) << 18); 1033 $charval += ((ord($string{++$i}) & 0x3F) << 12); 1034 $charval += ((ord($string{++$i}) & 0x3F) << 6); 1035 $charval += (ord($string{++$i}) & 0x3F); 1036 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) { 1037 $charval = (($char_ord_val & 0x0F) << 12); 1038 $charval += ((ord($string{++$i}) & 0x3F) << 6); 1039 $charval += (ord($string{++$i}) & 0x3F); 1040 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) { 1041 $charval = (($char_ord_val & 0x1F) << 6); 1042 $charval += (ord($string{++$i}) & 0x3F); 1043 } 1044 if (($charval >= 32) && ($charval <= 127)) { 1045 $HTMLstring .= htmlentities(chr($charval)); 1046 } else { 1047 $HTMLstring .= '&#'.$charval.';'; 1048 } 1049 } 1050 break; 1051 1052 case 'UTF-16LE': 1053 for ($i = 0; $i < strlen($string); $i += 2) { 1054 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1055 if (($charval >= 32) && ($charval <= 127)) { 1056 $HTMLstring .= chr($charval); 1057 } else { 1058 $HTMLstring .= '&#'.$charval.';'; 1059 } 1060 } 1061 break; 1062 1063 case 'UTF-16BE': 1064 for ($i = 0; $i < strlen($string); $i += 2) { 1065 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1066 if (($charval >= 32) && ($charval <= 127)) { 1067 $HTMLstring .= chr($charval); 1068 } else { 1069 $HTMLstring .= '&#'.$charval.';'; 1070 } 1071 } 1072 break; 1073 1074 default: 1075 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()'; 1076 break; 1077 } 1078 return $HTMLstring; 1079 } 1080 1081 1082 1083 public static function RGADnameLookup($namecode) { 1084 static $RGADname = array(); 1085 if (empty($RGADname)) { 1086 $RGADname[0] = 'not set'; 1087 $RGADname[1] = 'Track Gain Adjustment'; 1088 $RGADname[2] = 'Album Gain Adjustment'; 1089 } 1090 1091 return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : ''); 1092 } 1093 1094 1095 public static function RGADoriginatorLookup($originatorcode) { 1096 static $RGADoriginator = array(); 1097 if (empty($RGADoriginator)) { 1098 $RGADoriginator[0] = 'unspecified'; 1099 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer'; 1100 $RGADoriginator[2] = 'set by user'; 1101 $RGADoriginator[3] = 'determined automatically'; 1102 } 1103 1104 return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : ''); 1105 } 1106 1107 1108 public static function RGADadjustmentLookup($rawadjustment, $signbit) { 1109 $adjustment = $rawadjustment / 10; 1110 if ($signbit == 1) { 1111 $adjustment *= -1; 1112 } 1113 return (float) $adjustment; 1114 } 1115 1116 1117 public static function RGADgainString($namecode, $originatorcode, $replaygain) { 1118 if ($replaygain < 0) { 1119 $signbit = '1'; 1120 } else { 1121 $signbit = '0'; 1122 } 1123 $storedreplaygain = intval(round($replaygain * 10)); 1124 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT); 1125 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT); 1126 $gainstring .= $signbit; 1127 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT); 1128 1129 return $gainstring; 1130 } 1131 1132 public static function RGADamplitude2dB($amplitude) { 1133 return 20 * log10($amplitude); 1134 } 1135 1136 1137 public static function GetDataImageSize($imgData, &$imageinfo=array()) { 1138 static $tempdir = ''; 1139 if (empty($tempdir)) { 1140 // yes this is ugly, feel free to suggest a better way 1141 require_once(dirname(__FILE__).'/getid3.php'); 1142 $getid3_temp = new getID3(); 1143 $tempdir = $getid3_temp->tempdir; 1144 unset($getid3_temp); 1145 } 1146 $GetDataImageSize = false; 1147 if ($tempfilename = tempnam($tempdir, 'gI3')) { 1148 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) { 1149 fwrite($tmp, $imgData); 1150 fclose($tmp); 1151 $GetDataImageSize = @getimagesize($tempfilename, $imageinfo); 1152 } 1153 unlink($tempfilename); 1154 } 1155 return $GetDataImageSize; 1156 } 1157 1158 public static function ImageExtFromMime($mime_type) { 1159 // temporary way, works OK for now, but should be reworked in the future 1160 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type); 1161 } 1162 1163 public static function ImageTypesLookup($imagetypeid) { 1164 static $ImageTypesLookup = array(); 1165 if (empty($ImageTypesLookup)) { 1166 $ImageTypesLookup[1] = 'gif'; 1167 $ImageTypesLookup[2] = 'jpeg'; 1168 $ImageTypesLookup[3] = 'png'; 1169 $ImageTypesLookup[4] = 'swf'; 1170 $ImageTypesLookup[5] = 'psd'; 1171 $ImageTypesLookup[6] = 'bmp'; 1172 $ImageTypesLookup[7] = 'tiff (little-endian)'; 1173 $ImageTypesLookup[8] = 'tiff (big-endian)'; 1174 $ImageTypesLookup[9] = 'jpc'; 1175 $ImageTypesLookup[10] = 'jp2'; 1176 $ImageTypesLookup[11] = 'jpx'; 1177 $ImageTypesLookup[12] = 'jb2'; 1178 $ImageTypesLookup[13] = 'swc'; 1179 $ImageTypesLookup[14] = 'iff'; 1180 } 1181 return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : ''); 1182 } 1183 1184 public static function CopyTagsToComments(&$ThisFileInfo) { 1185 1186 // Copy all entries from ['tags'] into common ['comments'] 1187 if (!empty($ThisFileInfo['tags'])) { 1188 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) { 1189 foreach ($tagarray as $tagname => $tagdata) { 1190 foreach ($tagdata as $key => $value) { 1191 if (!empty($value)) { 1192 if (empty($ThisFileInfo['comments'][$tagname])) { 1193 1194 // fall through and append value 1195 1196 } elseif ($tagtype == 'id3v1') { 1197 1198 $newvaluelength = strlen(trim($value)); 1199 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1200 $oldvaluelength = strlen(trim($existingvalue)); 1201 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) { 1202 // new value is identical but shorter-than (or equal-length to) one already in comments - skip 1203 break 2; 1204 } 1205 } 1206 1207 } elseif (!is_array($value)) { 1208 1209 $newvaluelength = strlen(trim($value)); 1210 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1211 $oldvaluelength = strlen(trim($existingvalue)); 1212 if (($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) { 1213 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value); 1214 break 2; 1215 } 1216 } 1217 1218 } 1219 if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) { 1220 $value = (is_string($value) ? trim($value) : $value); 1221 $ThisFileInfo['comments'][$tagname][] = $value; 1222 } 1223 } 1224 } 1225 } 1226 } 1227 1228 // Copy to ['comments_html'] 1229 foreach ($ThisFileInfo['comments'] as $field => $values) { 1230 if ($field == 'picture') { 1231 // pictures can take up a lot of space, and we don't need multiple copies of them 1232 // let there be a single copy in [comments][picture], and not elsewhere 1233 continue; 1234 } 1235 foreach ($values as $index => $value) { 1236 if (is_array($value)) { 1237 $ThisFileInfo['comments_html'][$field][$index] = $value; 1238 } else { 1239 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding'])); 1240 } 1241 } 1242 } 1243 } 1244 return true; 1245 } 1246 1247 1248 public static function EmbeddedLookup($key, $begin, $end, $file, $name) { 1249 1250 // Cached 1251 static $cache; 1252 if (isset($cache[$file][$name])) { 1253 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1254 } 1255 1256 // Init 1257 $keylength = strlen($key); 1258 $line_count = $end - $begin - 7; 1259 1260 // Open php file 1261 $fp = fopen($file, 'r'); 1262 1263 // Discard $begin lines 1264 for ($i = 0; $i < ($begin + 3); $i++) { 1265 fgets($fp, 1024); 1266 } 1267 1268 // Loop thru line 1269 while (0 < $line_count--) { 1270 1271 // Read line 1272 $line = ltrim(fgets($fp, 1024), "\t "); 1273 1274 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key 1275 //$keycheck = substr($line, 0, $keylength); 1276 //if ($key == $keycheck) { 1277 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1); 1278 // break; 1279 //} 1280 1281 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key 1282 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1)); 1283 $explodedLine = explode("\t", $line, 2); 1284 $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : ''); 1285 $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : ''); 1286 $cache[$file][$name][$ThisKey] = trim($ThisValue); 1287 } 1288 1289 // Close and return 1290 fclose($fp); 1291 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1292 } 1293 1294 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) { 1295 global $GETID3_ERRORARRAY; 1296 1297 if (file_exists($filename)) { 1298 if (include_once($filename)) { 1299 return true; 1300 } else { 1301 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors'; 1302 } 1303 } else { 1304 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing'; 1305 } 1306 if ($DieOnFailure) { 1307 throw new Exception($diemessage); 1308 } else { 1309 $GETID3_ERRORARRAY[] = $diemessage; 1310 } 1311 return false; 1312 } 1313 1314 public static function trimNullByte($string) { 1315 return trim($string, "\x00"); 1316 } 1317 1318 public static function getFileSizeSyscall($path) { 1319 $filesize = false; 1320 1321 if (GETID3_OS_ISWINDOWS) { 1322 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: 1323 $filesystem = new COM('Scripting.FileSystemObject'); 1324 $file = $filesystem->GetFile($path); 1325 $filesize = $file->Size(); 1326 unset($filesystem, $file); 1327 } else { 1328 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI'; 1329 } 1330 } else { 1331 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\''; 1332 } 1333 if (isset($commandline)) { 1334 $output = trim(`$commandline`); 1335 if (ctype_digit($output)) { 1336 $filesize = (float) $output; 1337 } 1338 } 1339 return $filesize; 1340 } 1341 }
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