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1 <?php 2 3 ///////////////////////////////////////////////////////////////// 4 /// getID3() by James Heinrich <info@getid3.org> // 5 // available at https://github.com/JamesHeinrich/getID3 // 6 // or https://www.getid3.org // 7 // or http://getid3.sourceforge.net // 8 // // 9 // getid3.lib.php - part of getID3() // 10 // see readme.txt for more details // 11 // /// 12 ///////////////////////////////////////////////////////////////// 13 14 15 class getid3_lib 16 { 17 /** 18 * @param string $string 19 * @param bool $hex 20 * @param bool $spaces 21 * @param string $htmlencoding 22 * 23 * @return string 24 */ 25 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') { 26 $returnstring = ''; 27 for ($i = 0; $i < strlen($string); $i++) { 28 if ($hex) { 29 $returnstring .= str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT); 30 } else { 31 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string[$i]) ? $string[$i] : '¤'); 32 } 33 if ($spaces) { 34 $returnstring .= ' '; 35 } 36 } 37 if (!empty($htmlencoding)) { 38 if ($htmlencoding === true) { 39 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean 40 } 41 $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding); 42 } 43 return $returnstring; 44 } 45 46 /** 47 * Truncates a floating-point number at the decimal point. 48 * 49 * @param float $floatnumber 50 * 51 * @return float|int returns int (if possible, otherwise float) 52 */ 53 public static function trunc($floatnumber) { 54 if ($floatnumber >= 1) { 55 $truncatednumber = floor($floatnumber); 56 } elseif ($floatnumber <= -1) { 57 $truncatednumber = ceil($floatnumber); 58 } else { 59 $truncatednumber = 0; 60 } 61 if (self::intValueSupported($truncatednumber)) { 62 $truncatednumber = (int) $truncatednumber; 63 } 64 return $truncatednumber; 65 } 66 67 /** 68 * @param int|null $variable 69 * @param int $increment 70 * 71 * @return bool 72 */ 73 public static function safe_inc(&$variable, $increment=1) { 74 if (isset($variable)) { 75 $variable += $increment; 76 } else { 77 $variable = $increment; 78 } 79 return true; 80 } 81 82 /** 83 * @param int|float $floatnum 84 * 85 * @return int|float 86 */ 87 public static function CastAsInt($floatnum) { 88 // convert to float if not already 89 $floatnum = (float) $floatnum; 90 91 // convert a float to type int, only if possible 92 if (self::trunc($floatnum) == $floatnum) { 93 // it's not floating point 94 if (self::intValueSupported($floatnum)) { 95 // it's within int range 96 $floatnum = (int) $floatnum; 97 } 98 } 99 return $floatnum; 100 } 101 102 /** 103 * @param int $num 104 * 105 * @return bool 106 */ 107 public static function intValueSupported($num) { 108 // check if integers are 64-bit 109 static $hasINT64 = null; 110 if ($hasINT64 === null) { // 10x faster than is_null() 111 $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1 112 if (!$hasINT64 && !defined('PHP_INT_MIN')) { 113 define('PHP_INT_MIN', ~PHP_INT_MAX); 114 } 115 } 116 // if integers are 64-bit - no other check required 117 if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { 118 return true; 119 } 120 return false; 121 } 122 123 /** 124 * @param string $fraction 125 * 126 * @return float 127 */ 128 public static function DecimalizeFraction($fraction) { 129 list($numerator, $denominator) = explode('/', $fraction); 130 return $numerator / ($denominator ? $denominator : 1); 131 } 132 133 /** 134 * @param string $binarynumerator 135 * 136 * @return float 137 */ 138 public static function DecimalBinary2Float($binarynumerator) { 139 $numerator = self::Bin2Dec($binarynumerator); 140 $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator))); 141 return ($numerator / $denominator); 142 } 143 144 /** 145 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html 146 * 147 * @param string $binarypointnumber 148 * @param int $maxbits 149 * 150 * @return array 151 */ 152 public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) { 153 if (strpos($binarypointnumber, '.') === false) { 154 $binarypointnumber = '0.'.$binarypointnumber; 155 } elseif ($binarypointnumber[0] == '.') { 156 $binarypointnumber = '0'.$binarypointnumber; 157 } 158 $exponent = 0; 159 while (($binarypointnumber[0] != '1') || (substr($binarypointnumber, 1, 1) != '.')) { 160 if (substr($binarypointnumber, 1, 1) == '.') { 161 $exponent--; 162 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3); 163 } else { 164 $pointpos = strpos($binarypointnumber, '.'); 165 $exponent += ($pointpos - 1); 166 $binarypointnumber = str_replace('.', '', $binarypointnumber); 167 $binarypointnumber = $binarypointnumber[0].'.'.substr($binarypointnumber, 1); 168 } 169 } 170 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT); 171 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent); 172 } 173 174 /** 175 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html 176 * 177 * @param float $floatvalue 178 * 179 * @return string 180 */ 181 public static function Float2BinaryDecimal($floatvalue) { 182 $maxbits = 128; // to how many bits of precision should the calculations be taken? 183 $intpart = self::trunc($floatvalue); 184 $floatpart = abs($floatvalue - $intpart); 185 $pointbitstring = ''; 186 while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) { 187 $floatpart *= 2; 188 $pointbitstring .= (string) self::trunc($floatpart); 189 $floatpart -= self::trunc($floatpart); 190 } 191 $binarypointnumber = decbin($intpart).'.'.$pointbitstring; 192 return $binarypointnumber; 193 } 194 195 /** 196 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html 197 * 198 * @param float $floatvalue 199 * @param int $bits 200 * 201 * @return string|false 202 */ 203 public static function Float2String($floatvalue, $bits) { 204 $exponentbits = 0; 205 $fractionbits = 0; 206 switch ($bits) { 207 case 32: 208 $exponentbits = 8; 209 $fractionbits = 23; 210 break; 211 212 case 64: 213 $exponentbits = 11; 214 $fractionbits = 52; 215 break; 216 217 default: 218 return false; 219 break; 220 } 221 if ($floatvalue >= 0) { 222 $signbit = '0'; 223 } else { 224 $signbit = '1'; 225 } 226 $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits); 227 $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent 228 $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT); 229 $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT); 230 231 return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false); 232 } 233 234 /** 235 * @param string $byteword 236 * 237 * @return float|false 238 */ 239 public static function LittleEndian2Float($byteword) { 240 return self::BigEndian2Float(strrev($byteword)); 241 } 242 243 /** 244 * ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic 245 * 246 * @link http://www.psc.edu/general/software/packages/ieee/ieee.html 247 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html 248 * 249 * @param string $byteword 250 * 251 * @return float|false 252 */ 253 public static function BigEndian2Float($byteword) { 254 $bitword = self::BigEndian2Bin($byteword); 255 if (!$bitword) { 256 return 0; 257 } 258 $signbit = $bitword[0]; 259 $floatvalue = 0; 260 $exponentbits = 0; 261 $fractionbits = 0; 262 263 switch (strlen($byteword) * 8) { 264 case 32: 265 $exponentbits = 8; 266 $fractionbits = 23; 267 break; 268 269 case 64: 270 $exponentbits = 11; 271 $fractionbits = 52; 272 break; 273 274 case 80: 275 // 80-bit Apple SANE format 276 // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/ 277 $exponentstring = substr($bitword, 1, 15); 278 $isnormalized = intval($bitword[16]); 279 $fractionstring = substr($bitword, 17, 63); 280 $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383); 281 $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring); 282 $floatvalue = $exponent * $fraction; 283 if ($signbit == '1') { 284 $floatvalue *= -1; 285 } 286 return $floatvalue; 287 break; 288 289 default: 290 return false; 291 break; 292 } 293 $exponentstring = substr($bitword, 1, $exponentbits); 294 $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits); 295 $exponent = self::Bin2Dec($exponentstring); 296 $fraction = self::Bin2Dec($fractionstring); 297 298 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) { 299 // Not a Number 300 $floatvalue = false; 301 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) { 302 if ($signbit == '1') { 303 $floatvalue = '-infinity'; 304 } else { 305 $floatvalue = '+infinity'; 306 } 307 } elseif (($exponent == 0) && ($fraction == 0)) { 308 if ($signbit == '1') { 309 $floatvalue = -0; 310 } else { 311 $floatvalue = 0; 312 } 313 $floatvalue = ($signbit ? 0 : -0); 314 } elseif (($exponent == 0) && ($fraction != 0)) { 315 // These are 'unnormalized' values 316 $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring); 317 if ($signbit == '1') { 318 $floatvalue *= -1; 319 } 320 } elseif ($exponent != 0) { 321 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring)); 322 if ($signbit == '1') { 323 $floatvalue *= -1; 324 } 325 } 326 return (float) $floatvalue; 327 } 328 329 /** 330 * @param string $byteword 331 * @param bool $synchsafe 332 * @param bool $signed 333 * 334 * @return int|float|false 335 * @throws Exception 336 */ 337 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) { 338 $intvalue = 0; 339 $bytewordlen = strlen($byteword); 340 if ($bytewordlen == 0) { 341 return false; 342 } 343 for ($i = 0; $i < $bytewordlen; $i++) { 344 if ($synchsafe) { // disregard MSB, effectively 7-bit bytes 345 //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems 346 $intvalue += (ord($byteword[$i]) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7); 347 } else { 348 $intvalue += ord($byteword[$i]) * pow(256, ($bytewordlen - 1 - $i)); 349 } 350 } 351 if ($signed && !$synchsafe) { 352 // synchsafe ints are not allowed to be signed 353 if ($bytewordlen <= PHP_INT_SIZE) { 354 $signMaskBit = 0x80 << (8 * ($bytewordlen - 1)); 355 if ($intvalue & $signMaskBit) { 356 $intvalue = 0 - ($intvalue & ($signMaskBit - 1)); 357 } 358 } else { 359 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()'); 360 } 361 } 362 return self::CastAsInt($intvalue); 363 } 364 365 /** 366 * @param string $byteword 367 * @param bool $signed 368 * 369 * @return int|float|false 370 */ 371 public static function LittleEndian2Int($byteword, $signed=false) { 372 return self::BigEndian2Int(strrev($byteword), false, $signed); 373 } 374 375 /** 376 * @param string $byteword 377 * 378 * @return string 379 */ 380 public static function LittleEndian2Bin($byteword) { 381 return self::BigEndian2Bin(strrev($byteword)); 382 } 383 384 /** 385 * @param string $byteword 386 * 387 * @return string 388 */ 389 public static function BigEndian2Bin($byteword) { 390 $binvalue = ''; 391 $bytewordlen = strlen($byteword); 392 for ($i = 0; $i < $bytewordlen; $i++) { 393 $binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT); 394 } 395 return $binvalue; 396 } 397 398 /** 399 * @param int $number 400 * @param int $minbytes 401 * @param bool $synchsafe 402 * @param bool $signed 403 * 404 * @return string 405 * @throws Exception 406 */ 407 public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) { 408 if ($number < 0) { 409 throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers'); 410 } 411 $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF); 412 $intstring = ''; 413 if ($signed) { 414 if ($minbytes > PHP_INT_SIZE) { 415 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()'); 416 } 417 $number = $number & (0x80 << (8 * ($minbytes - 1))); 418 } 419 while ($number != 0) { 420 $quotient = ($number / ($maskbyte + 1)); 421 $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring; 422 $number = floor($quotient); 423 } 424 return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT); 425 } 426 427 /** 428 * @param int $number 429 * 430 * @return string 431 */ 432 public static function Dec2Bin($number) { 433 while ($number >= 256) { 434 $bytes[] = (($number / 256) - (floor($number / 256))) * 256; 435 $number = floor($number / 256); 436 } 437 $bytes[] = $number; 438 $binstring = ''; 439 for ($i = 0; $i < count($bytes); $i++) { 440 $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring; 441 } 442 return $binstring; 443 } 444 445 /** 446 * @param string $binstring 447 * @param bool $signed 448 * 449 * @return int|float 450 */ 451 public static function Bin2Dec($binstring, $signed=false) { 452 $signmult = 1; 453 if ($signed) { 454 if ($binstring[0] == '1') { 455 $signmult = -1; 456 } 457 $binstring = substr($binstring, 1); 458 } 459 $decvalue = 0; 460 for ($i = 0; $i < strlen($binstring); $i++) { 461 $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); 462 } 463 return self::CastAsInt($decvalue * $signmult); 464 } 465 466 /** 467 * @param string $binstring 468 * 469 * @return string 470 */ 471 public static function Bin2String($binstring) { 472 // return 'hi' for input of '0110100001101001' 473 $string = ''; 474 $binstringreversed = strrev($binstring); 475 for ($i = 0; $i < strlen($binstringreversed); $i += 8) { 476 $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string; 477 } 478 return $string; 479 } 480 481 /** 482 * @param int $number 483 * @param int $minbytes 484 * @param bool $synchsafe 485 * 486 * @return string 487 */ 488 public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) { 489 $intstring = ''; 490 while ($number > 0) { 491 if ($synchsafe) { 492 $intstring = $intstring.chr($number & 127); 493 $number >>= 7; 494 } else { 495 $intstring = $intstring.chr($number & 255); 496 $number >>= 8; 497 } 498 } 499 return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT); 500 } 501 502 /** 503 * @param array $array1 504 * @param array $array2 505 * 506 * @return array|false 507 */ 508 public static function array_merge_clobber($array1, $array2) { 509 // written by kcØhireability*com 510 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php 511 if (!is_array($array1) || !is_array($array2)) { 512 return false; 513 } 514 $newarray = $array1; 515 foreach ($array2 as $key => $val) { 516 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { 517 $newarray[$key] = self::array_merge_clobber($newarray[$key], $val); 518 } else { 519 $newarray[$key] = $val; 520 } 521 } 522 return $newarray; 523 } 524 525 /** 526 * @param array $array1 527 * @param array $array2 528 * 529 * @return array|false 530 */ 531 public static function array_merge_noclobber($array1, $array2) { 532 if (!is_array($array1) || !is_array($array2)) { 533 return false; 534 } 535 $newarray = $array1; 536 foreach ($array2 as $key => $val) { 537 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { 538 $newarray[$key] = self::array_merge_noclobber($newarray[$key], $val); 539 } elseif (!isset($newarray[$key])) { 540 $newarray[$key] = $val; 541 } 542 } 543 return $newarray; 544 } 545 546 /** 547 * @param array $array1 548 * @param array $array2 549 * 550 * @return array|false|null 551 */ 552 public static function flipped_array_merge_noclobber($array1, $array2) { 553 if (!is_array($array1) || !is_array($array2)) { 554 return false; 555 } 556 # naturally, this only works non-recursively 557 $newarray = array_flip($array1); 558 foreach (array_flip($array2) as $key => $val) { 559 if (!isset($newarray[$key])) { 560 $newarray[$key] = count($newarray); 561 } 562 } 563 return array_flip($newarray); 564 } 565 566 /** 567 * @param array $theArray 568 * 569 * @return bool 570 */ 571 public static function ksort_recursive(&$theArray) { 572 ksort($theArray); 573 foreach ($theArray as $key => $value) { 574 if (is_array($value)) { 575 self::ksort_recursive($theArray[$key]); 576 } 577 } 578 return true; 579 } 580 581 /** 582 * @param string $filename 583 * @param int $numextensions 584 * 585 * @return string 586 */ 587 public static function fileextension($filename, $numextensions=1) { 588 if (strstr($filename, '.')) { 589 $reversedfilename = strrev($filename); 590 $offset = 0; 591 for ($i = 0; $i < $numextensions; $i++) { 592 $offset = strpos($reversedfilename, '.', $offset + 1); 593 if ($offset === false) { 594 return ''; 595 } 596 } 597 return strrev(substr($reversedfilename, 0, $offset)); 598 } 599 return ''; 600 } 601 602 /** 603 * @param int $seconds 604 * 605 * @return string 606 */ 607 public static function PlaytimeString($seconds) { 608 $sign = (($seconds < 0) ? '-' : ''); 609 $seconds = round(abs($seconds)); 610 $H = (int) floor( $seconds / 3600); 611 $M = (int) floor(($seconds - (3600 * $H) ) / 60); 612 $S = (int) round( $seconds - (3600 * $H) - (60 * $M) ); 613 return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT); 614 } 615 616 /** 617 * @param int $macdate 618 * 619 * @return int|float 620 */ 621 public static function DateMac2Unix($macdate) { 622 // Macintosh timestamp: seconds since 00:00h January 1, 1904 623 // UNIX timestamp: seconds since 00:00h January 1, 1970 624 return self::CastAsInt($macdate - 2082844800); 625 } 626 627 /** 628 * @param string $rawdata 629 * 630 * @return float 631 */ 632 public static function FixedPoint8_8($rawdata) { 633 return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8)); 634 } 635 636 /** 637 * @param string $rawdata 638 * 639 * @return float 640 */ 641 public static function FixedPoint16_16($rawdata) { 642 return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16)); 643 } 644 645 /** 646 * @param string $rawdata 647 * 648 * @return float 649 */ 650 public static function FixedPoint2_30($rawdata) { 651 $binarystring = self::BigEndian2Bin($rawdata); 652 return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30)); 653 } 654 655 656 /** 657 * @param string $ArrayPath 658 * @param string $Separator 659 * @param mixed $Value 660 * 661 * @return array 662 */ 663 public static function CreateDeepArray($ArrayPath, $Separator, $Value) { 664 // assigns $Value to a nested array path: 665 // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt') 666 // is the same as: 667 // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt')))); 668 // or 669 // $foo['path']['to']['my'] = 'file.txt'; 670 $ArrayPath = ltrim($ArrayPath, $Separator); 671 if (($pos = strpos($ArrayPath, $Separator)) !== false) { 672 $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value); 673 } else { 674 $ReturnedArray[$ArrayPath] = $Value; 675 } 676 return $ReturnedArray; 677 } 678 679 /** 680 * @param array $arraydata 681 * @param bool $returnkey 682 * 683 * @return int|false 684 */ 685 public static function array_max($arraydata, $returnkey=false) { 686 $maxvalue = false; 687 $maxkey = false; 688 foreach ($arraydata as $key => $value) { 689 if (!is_array($value)) { 690 if ($value > $maxvalue) { 691 $maxvalue = $value; 692 $maxkey = $key; 693 } 694 } 695 } 696 return ($returnkey ? $maxkey : $maxvalue); 697 } 698 699 /** 700 * @param array $arraydata 701 * @param bool $returnkey 702 * 703 * @return int|false 704 */ 705 public static function array_min($arraydata, $returnkey=false) { 706 $minvalue = false; 707 $minkey = false; 708 foreach ($arraydata as $key => $value) { 709 if (!is_array($value)) { 710 if ($value > $minvalue) { 711 $minvalue = $value; 712 $minkey = $key; 713 } 714 } 715 } 716 return ($returnkey ? $minkey : $minvalue); 717 } 718 719 /** 720 * @param string $XMLstring 721 * 722 * @return array|false 723 */ 724 public static function XML2array($XMLstring) { 725 if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) { 726 // http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html 727 // https://core.trac.wordpress.org/changeset/29378 728 $loader = libxml_disable_entity_loader(true); 729 $XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT); 730 $return = self::SimpleXMLelement2array($XMLobject); 731 libxml_disable_entity_loader($loader); 732 return $return; 733 } 734 return false; 735 } 736 737 /** 738 * @param SimpleXMLElement|array $XMLobject 739 * 740 * @return array 741 */ 742 public static function SimpleXMLelement2array($XMLobject) { 743 if (!is_object($XMLobject) && !is_array($XMLobject)) { 744 return $XMLobject; 745 } 746 $XMLarray = $XMLobject instanceof SimpleXMLElement ? get_object_vars($XMLobject) : $XMLobject; 747 foreach ($XMLarray as $key => $value) { 748 $XMLarray[$key] = self::SimpleXMLelement2array($value); 749 } 750 return $XMLarray; 751 } 752 753 /** 754 * Returns checksum for a file from starting position to absolute end position. 755 * 756 * @param string $file 757 * @param int $offset 758 * @param int $end 759 * @param string $algorithm 760 * 761 * @return string|false 762 * @throws getid3_exception 763 */ 764 public static function hash_data($file, $offset, $end, $algorithm) { 765 if (!self::intValueSupported($end)) { 766 return false; 767 } 768 if (!in_array($algorithm, array('md5', 'sha1'))) { 769 throw new getid3_exception('Invalid algorithm ('.$algorithm.') in self::hash_data()'); 770 } 771 772 $size = $end - $offset; 773 774 $fp = fopen($file, 'rb'); 775 fseek($fp, $offset); 776 $ctx = hash_init($algorithm); 777 while ($size > 0) { 778 $buffer = fread($fp, min($size, getID3::FREAD_BUFFER_SIZE)); 779 hash_update($ctx, $buffer); 780 $size -= getID3::FREAD_BUFFER_SIZE; 781 } 782 $hash = hash_final($ctx); 783 fclose($fp); 784 785 return $hash; 786 } 787 788 /** 789 * @param string $filename_source 790 * @param string $filename_dest 791 * @param int $offset 792 * @param int $length 793 * 794 * @return bool 795 * @throws Exception 796 * 797 * @deprecated Unused, may be removed in future versions of getID3 798 */ 799 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) { 800 if (!self::intValueSupported($offset + $length)) { 801 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit'); 802 } 803 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) { 804 if (($fp_dest = fopen($filename_dest, 'wb'))) { 805 if (fseek($fp_src, $offset) == 0) { 806 $byteslefttowrite = $length; 807 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) { 808 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite); 809 $byteslefttowrite -= $byteswritten; 810 } 811 fclose($fp_dest); 812 return true; 813 } else { 814 fclose($fp_src); 815 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source); 816 } 817 } else { 818 throw new Exception('failed to create file for writing '.$filename_dest); 819 } 820 } else { 821 throw new Exception('failed to open file for reading '.$filename_source); 822 } 823 } 824 825 /** 826 * @param int $charval 827 * 828 * @return string 829 */ 830 public static function iconv_fallback_int_utf8($charval) { 831 if ($charval < 128) { 832 // 0bbbbbbb 833 $newcharstring = chr($charval); 834 } elseif ($charval < 2048) { 835 // 110bbbbb 10bbbbbb 836 $newcharstring = chr(($charval >> 6) | 0xC0); 837 $newcharstring .= chr(($charval & 0x3F) | 0x80); 838 } elseif ($charval < 65536) { 839 // 1110bbbb 10bbbbbb 10bbbbbb 840 $newcharstring = chr(($charval >> 12) | 0xE0); 841 $newcharstring .= chr(($charval >> 6) | 0xC0); 842 $newcharstring .= chr(($charval & 0x3F) | 0x80); 843 } else { 844 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 845 $newcharstring = chr(($charval >> 18) | 0xF0); 846 $newcharstring .= chr(($charval >> 12) | 0xC0); 847 $newcharstring .= chr(($charval >> 6) | 0xC0); 848 $newcharstring .= chr(($charval & 0x3F) | 0x80); 849 } 850 return $newcharstring; 851 } 852 853 /** 854 * ISO-8859-1 => UTF-8 855 * 856 * @param string $string 857 * @param bool $bom 858 * 859 * @return string 860 */ 861 public static function iconv_fallback_iso88591_utf8($string, $bom=false) { 862 if (function_exists('utf8_encode')) { 863 return utf8_encode($string); 864 } 865 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 866 $newcharstring = ''; 867 if ($bom) { 868 $newcharstring .= "\xEF\xBB\xBF"; 869 } 870 for ($i = 0; $i < strlen($string); $i++) { 871 $charval = ord($string[$i]); 872 $newcharstring .= self::iconv_fallback_int_utf8($charval); 873 } 874 return $newcharstring; 875 } 876 877 /** 878 * ISO-8859-1 => UTF-16BE 879 * 880 * @param string $string 881 * @param bool $bom 882 * 883 * @return string 884 */ 885 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) { 886 $newcharstring = ''; 887 if ($bom) { 888 $newcharstring .= "\xFE\xFF"; 889 } 890 for ($i = 0; $i < strlen($string); $i++) { 891 $newcharstring .= "\x00".$string[$i]; 892 } 893 return $newcharstring; 894 } 895 896 /** 897 * ISO-8859-1 => UTF-16LE 898 * 899 * @param string $string 900 * @param bool $bom 901 * 902 * @return string 903 */ 904 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) { 905 $newcharstring = ''; 906 if ($bom) { 907 $newcharstring .= "\xFF\xFE"; 908 } 909 for ($i = 0; $i < strlen($string); $i++) { 910 $newcharstring .= $string[$i]."\x00"; 911 } 912 return $newcharstring; 913 } 914 915 /** 916 * ISO-8859-1 => UTF-16LE (BOM) 917 * 918 * @param string $string 919 * 920 * @return string 921 */ 922 public static function iconv_fallback_iso88591_utf16($string) { 923 return self::iconv_fallback_iso88591_utf16le($string, true); 924 } 925 926 /** 927 * UTF-8 => ISO-8859-1 928 * 929 * @param string $string 930 * 931 * @return string 932 */ 933 public static function iconv_fallback_utf8_iso88591($string) { 934 if (function_exists('utf8_decode')) { 935 return utf8_decode($string); 936 } 937 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 938 $newcharstring = ''; 939 $offset = 0; 940 $stringlength = strlen($string); 941 while ($offset < $stringlength) { 942 if ((ord($string[$offset]) | 0x07) == 0xF7) { 943 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 944 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 945 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 946 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 947 (ord($string[($offset + 3)]) & 0x3F); 948 $offset += 4; 949 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 950 // 1110bbbb 10bbbbbb 10bbbbbb 951 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 952 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 953 (ord($string[($offset + 2)]) & 0x3F); 954 $offset += 3; 955 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 956 // 110bbbbb 10bbbbbb 957 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 958 (ord($string[($offset + 1)]) & 0x3F); 959 $offset += 2; 960 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 961 // 0bbbbbbb 962 $charval = ord($string[$offset]); 963 $offset += 1; 964 } else { 965 // error? throw some kind of warning here? 966 $charval = false; 967 $offset += 1; 968 } 969 if ($charval !== false) { 970 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 971 } 972 } 973 return $newcharstring; 974 } 975 976 /** 977 * UTF-8 => UTF-16BE 978 * 979 * @param string $string 980 * @param bool $bom 981 * 982 * @return string 983 */ 984 public static function iconv_fallback_utf8_utf16be($string, $bom=false) { 985 $newcharstring = ''; 986 if ($bom) { 987 $newcharstring .= "\xFE\xFF"; 988 } 989 $offset = 0; 990 $stringlength = strlen($string); 991 while ($offset < $stringlength) { 992 if ((ord($string[$offset]) | 0x07) == 0xF7) { 993 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 994 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 995 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 996 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 997 (ord($string[($offset + 3)]) & 0x3F); 998 $offset += 4; 999 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 1000 // 1110bbbb 10bbbbbb 10bbbbbb 1001 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 1002 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 1003 (ord($string[($offset + 2)]) & 0x3F); 1004 $offset += 3; 1005 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 1006 // 110bbbbb 10bbbbbb 1007 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 1008 (ord($string[($offset + 1)]) & 0x3F); 1009 $offset += 2; 1010 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 1011 // 0bbbbbbb 1012 $charval = ord($string[$offset]); 1013 $offset += 1; 1014 } else { 1015 // error? throw some kind of warning here? 1016 $charval = false; 1017 $offset += 1; 1018 } 1019 if ($charval !== false) { 1020 $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?'); 1021 } 1022 } 1023 return $newcharstring; 1024 } 1025 1026 /** 1027 * UTF-8 => UTF-16LE 1028 * 1029 * @param string $string 1030 * @param bool $bom 1031 * 1032 * @return string 1033 */ 1034 public static function iconv_fallback_utf8_utf16le($string, $bom=false) { 1035 $newcharstring = ''; 1036 if ($bom) { 1037 $newcharstring .= "\xFF\xFE"; 1038 } 1039 $offset = 0; 1040 $stringlength = strlen($string); 1041 while ($offset < $stringlength) { 1042 if ((ord($string[$offset]) | 0x07) == 0xF7) { 1043 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 1044 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 1045 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 1046 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 1047 (ord($string[($offset + 3)]) & 0x3F); 1048 $offset += 4; 1049 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 1050 // 1110bbbb 10bbbbbb 10bbbbbb 1051 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 1052 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 1053 (ord($string[($offset + 2)]) & 0x3F); 1054 $offset += 3; 1055 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 1056 // 110bbbbb 10bbbbbb 1057 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 1058 (ord($string[($offset + 1)]) & 0x3F); 1059 $offset += 2; 1060 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 1061 // 0bbbbbbb 1062 $charval = ord($string[$offset]); 1063 $offset += 1; 1064 } else { 1065 // error? maybe throw some warning here? 1066 $charval = false; 1067 $offset += 1; 1068 } 1069 if ($charval !== false) { 1070 $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00"); 1071 } 1072 } 1073 return $newcharstring; 1074 } 1075 1076 /** 1077 * UTF-8 => UTF-16LE (BOM) 1078 * 1079 * @param string $string 1080 * 1081 * @return string 1082 */ 1083 public static function iconv_fallback_utf8_utf16($string) { 1084 return self::iconv_fallback_utf8_utf16le($string, true); 1085 } 1086 1087 /** 1088 * UTF-16BE => UTF-8 1089 * 1090 * @param string $string 1091 * 1092 * @return string 1093 */ 1094 public static function iconv_fallback_utf16be_utf8($string) { 1095 if (substr($string, 0, 2) == "\xFE\xFF") { 1096 // strip BOM 1097 $string = substr($string, 2); 1098 } 1099 $newcharstring = ''; 1100 for ($i = 0; $i < strlen($string); $i += 2) { 1101 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1102 $newcharstring .= self::iconv_fallback_int_utf8($charval); 1103 } 1104 return $newcharstring; 1105 } 1106 1107 /** 1108 * UTF-16LE => UTF-8 1109 * 1110 * @param string $string 1111 * 1112 * @return string 1113 */ 1114 public static function iconv_fallback_utf16le_utf8($string) { 1115 if (substr($string, 0, 2) == "\xFF\xFE") { 1116 // strip BOM 1117 $string = substr($string, 2); 1118 } 1119 $newcharstring = ''; 1120 for ($i = 0; $i < strlen($string); $i += 2) { 1121 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1122 $newcharstring .= self::iconv_fallback_int_utf8($charval); 1123 } 1124 return $newcharstring; 1125 } 1126 1127 /** 1128 * UTF-16BE => ISO-8859-1 1129 * 1130 * @param string $string 1131 * 1132 * @return string 1133 */ 1134 public static function iconv_fallback_utf16be_iso88591($string) { 1135 if (substr($string, 0, 2) == "\xFE\xFF") { 1136 // strip BOM 1137 $string = substr($string, 2); 1138 } 1139 $newcharstring = ''; 1140 for ($i = 0; $i < strlen($string); $i += 2) { 1141 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1142 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 1143 } 1144 return $newcharstring; 1145 } 1146 1147 /** 1148 * UTF-16LE => ISO-8859-1 1149 * 1150 * @param string $string 1151 * 1152 * @return string 1153 */ 1154 public static function iconv_fallback_utf16le_iso88591($string) { 1155 if (substr($string, 0, 2) == "\xFF\xFE") { 1156 // strip BOM 1157 $string = substr($string, 2); 1158 } 1159 $newcharstring = ''; 1160 for ($i = 0; $i < strlen($string); $i += 2) { 1161 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1162 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 1163 } 1164 return $newcharstring; 1165 } 1166 1167 /** 1168 * UTF-16 (BOM) => ISO-8859-1 1169 * 1170 * @param string $string 1171 * 1172 * @return string 1173 */ 1174 public static function iconv_fallback_utf16_iso88591($string) { 1175 $bom = substr($string, 0, 2); 1176 if ($bom == "\xFE\xFF") { 1177 return self::iconv_fallback_utf16be_iso88591(substr($string, 2)); 1178 } elseif ($bom == "\xFF\xFE") { 1179 return self::iconv_fallback_utf16le_iso88591(substr($string, 2)); 1180 } 1181 return $string; 1182 } 1183 1184 /** 1185 * UTF-16 (BOM) => UTF-8 1186 * 1187 * @param string $string 1188 * 1189 * @return string 1190 */ 1191 public static function iconv_fallback_utf16_utf8($string) { 1192 $bom = substr($string, 0, 2); 1193 if ($bom == "\xFE\xFF") { 1194 return self::iconv_fallback_utf16be_utf8(substr($string, 2)); 1195 } elseif ($bom == "\xFF\xFE") { 1196 return self::iconv_fallback_utf16le_utf8(substr($string, 2)); 1197 } 1198 return $string; 1199 } 1200 1201 /** 1202 * @param string $in_charset 1203 * @param string $out_charset 1204 * @param string $string 1205 * 1206 * @return string 1207 * @throws Exception 1208 */ 1209 public static function iconv_fallback($in_charset, $out_charset, $string) { 1210 1211 if ($in_charset == $out_charset) { 1212 return $string; 1213 } 1214 1215 // mb_convert_encoding() available 1216 if (function_exists('mb_convert_encoding')) { 1217 if ((strtoupper($in_charset) == 'UTF-16') && (substr($string, 0, 2) != "\xFE\xFF") && (substr($string, 0, 2) != "\xFF\xFE")) { 1218 // if BOM missing, mb_convert_encoding will mishandle the conversion, assume UTF-16BE and prepend appropriate BOM 1219 $string = "\xFF\xFE".$string; 1220 } 1221 if ((strtoupper($in_charset) == 'UTF-16') && (strtoupper($out_charset) == 'UTF-8')) { 1222 if (($string == "\xFF\xFE") || ($string == "\xFE\xFF")) { 1223 // if string consists of only BOM, mb_convert_encoding will return the BOM unmodified 1224 return ''; 1225 } 1226 } 1227 if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) { 1228 switch ($out_charset) { 1229 case 'ISO-8859-1': 1230 $converted_string = rtrim($converted_string, "\x00"); 1231 break; 1232 } 1233 return $converted_string; 1234 } 1235 return $string; 1236 1237 // iconv() available 1238 } elseif (function_exists('iconv')) { 1239 if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) { 1240 switch ($out_charset) { 1241 case 'ISO-8859-1': 1242 $converted_string = rtrim($converted_string, "\x00"); 1243 break; 1244 } 1245 return $converted_string; 1246 } 1247 1248 // iconv() may sometimes fail with "illegal character in input string" error message 1249 // and return an empty string, but returning the unconverted string is more useful 1250 return $string; 1251 } 1252 1253 1254 // neither mb_convert_encoding or iconv() is available 1255 static $ConversionFunctionList = array(); 1256 if (empty($ConversionFunctionList)) { 1257 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8'; 1258 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16'; 1259 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be'; 1260 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le'; 1261 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591'; 1262 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16'; 1263 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be'; 1264 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le'; 1265 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591'; 1266 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8'; 1267 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591'; 1268 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8'; 1269 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591'; 1270 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8'; 1271 } 1272 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) { 1273 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)]; 1274 return self::$ConversionFunction($string); 1275 } 1276 throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset); 1277 } 1278 1279 /** 1280 * @param mixed $data 1281 * @param string $charset 1282 * 1283 * @return mixed 1284 */ 1285 public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') { 1286 if (is_string($data)) { 1287 return self::MultiByteCharString2HTML($data, $charset); 1288 } elseif (is_array($data)) { 1289 $return_data = array(); 1290 foreach ($data as $key => $value) { 1291 $return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset); 1292 } 1293 return $return_data; 1294 } 1295 // integer, float, objects, resources, etc 1296 return $data; 1297 } 1298 1299 /** 1300 * @param string|int|float $string 1301 * @param string $charset 1302 * 1303 * @return string 1304 */ 1305 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') { 1306 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string 1307 $HTMLstring = ''; 1308 1309 switch (strtolower($charset)) { 1310 case '1251': 1311 case '1252': 1312 case '866': 1313 case '932': 1314 case '936': 1315 case '950': 1316 case 'big5': 1317 case 'big5-hkscs': 1318 case 'cp1251': 1319 case 'cp1252': 1320 case 'cp866': 1321 case 'euc-jp': 1322 case 'eucjp': 1323 case 'gb2312': 1324 case 'ibm866': 1325 case 'iso-8859-1': 1326 case 'iso-8859-15': 1327 case 'iso8859-1': 1328 case 'iso8859-15': 1329 case 'koi8-r': 1330 case 'koi8-ru': 1331 case 'koi8r': 1332 case 'shift_jis': 1333 case 'sjis': 1334 case 'win-1251': 1335 case 'windows-1251': 1336 case 'windows-1252': 1337 $HTMLstring = htmlentities($string, ENT_COMPAT, $charset); 1338 break; 1339 1340 case 'utf-8': 1341 $strlen = strlen($string); 1342 for ($i = 0; $i < $strlen; $i++) { 1343 $char_ord_val = ord($string[$i]); 1344 $charval = 0; 1345 if ($char_ord_val < 0x80) { 1346 $charval = $char_ord_val; 1347 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) { 1348 $charval = (($char_ord_val & 0x07) << 18); 1349 $charval += ((ord($string[++$i]) & 0x3F) << 12); 1350 $charval += ((ord($string[++$i]) & 0x3F) << 6); 1351 $charval += (ord($string[++$i]) & 0x3F); 1352 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) { 1353 $charval = (($char_ord_val & 0x0F) << 12); 1354 $charval += ((ord($string[++$i]) & 0x3F) << 6); 1355 $charval += (ord($string[++$i]) & 0x3F); 1356 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) { 1357 $charval = (($char_ord_val & 0x1F) << 6); 1358 $charval += (ord($string[++$i]) & 0x3F); 1359 } 1360 if (($charval >= 32) && ($charval <= 127)) { 1361 $HTMLstring .= htmlentities(chr($charval)); 1362 } else { 1363 $HTMLstring .= '&#'.$charval.';'; 1364 } 1365 } 1366 break; 1367 1368 case 'utf-16le': 1369 for ($i = 0; $i < strlen($string); $i += 2) { 1370 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1371 if (($charval >= 32) && ($charval <= 127)) { 1372 $HTMLstring .= chr($charval); 1373 } else { 1374 $HTMLstring .= '&#'.$charval.';'; 1375 } 1376 } 1377 break; 1378 1379 case 'utf-16be': 1380 for ($i = 0; $i < strlen($string); $i += 2) { 1381 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1382 if (($charval >= 32) && ($charval <= 127)) { 1383 $HTMLstring .= chr($charval); 1384 } else { 1385 $HTMLstring .= '&#'.$charval.';'; 1386 } 1387 } 1388 break; 1389 1390 default: 1391 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()'; 1392 break; 1393 } 1394 return $HTMLstring; 1395 } 1396 1397 /** 1398 * @param int $namecode 1399 * 1400 * @return string 1401 */ 1402 public static function RGADnameLookup($namecode) { 1403 static $RGADname = array(); 1404 if (empty($RGADname)) { 1405 $RGADname[0] = 'not set'; 1406 $RGADname[1] = 'Track Gain Adjustment'; 1407 $RGADname[2] = 'Album Gain Adjustment'; 1408 } 1409 1410 return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : ''); 1411 } 1412 1413 /** 1414 * @param int $originatorcode 1415 * 1416 * @return string 1417 */ 1418 public static function RGADoriginatorLookup($originatorcode) { 1419 static $RGADoriginator = array(); 1420 if (empty($RGADoriginator)) { 1421 $RGADoriginator[0] = 'unspecified'; 1422 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer'; 1423 $RGADoriginator[2] = 'set by user'; 1424 $RGADoriginator[3] = 'determined automatically'; 1425 } 1426 1427 return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : ''); 1428 } 1429 1430 /** 1431 * @param int $rawadjustment 1432 * @param int $signbit 1433 * 1434 * @return float 1435 */ 1436 public static function RGADadjustmentLookup($rawadjustment, $signbit) { 1437 $adjustment = (float) $rawadjustment / 10; 1438 if ($signbit == 1) { 1439 $adjustment *= -1; 1440 } 1441 return $adjustment; 1442 } 1443 1444 /** 1445 * @param int $namecode 1446 * @param int $originatorcode 1447 * @param int $replaygain 1448 * 1449 * @return string 1450 */ 1451 public static function RGADgainString($namecode, $originatorcode, $replaygain) { 1452 if ($replaygain < 0) { 1453 $signbit = '1'; 1454 } else { 1455 $signbit = '0'; 1456 } 1457 $storedreplaygain = intval(round($replaygain * 10)); 1458 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT); 1459 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT); 1460 $gainstring .= $signbit; 1461 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT); 1462 1463 return $gainstring; 1464 } 1465 1466 /** 1467 * @param float $amplitude 1468 * 1469 * @return float 1470 */ 1471 public static function RGADamplitude2dB($amplitude) { 1472 return 20 * log10($amplitude); 1473 } 1474 1475 /** 1476 * @param string $imgData 1477 * @param array $imageinfo 1478 * 1479 * @return array|false 1480 */ 1481 public static function GetDataImageSize($imgData, &$imageinfo=array()) { 1482 static $tempdir = ''; 1483 if (empty($tempdir)) { 1484 if (function_exists('sys_get_temp_dir')) { 1485 $tempdir = sys_get_temp_dir(); // https://github.com/JamesHeinrich/getID3/issues/52 1486 } 1487 1488 // yes this is ugly, feel free to suggest a better way 1489 if (include_once(dirname(__FILE__).'/getid3.php')) { 1490 if ($getid3_temp = new getID3()) { 1491 if ($getid3_temp_tempdir = $getid3_temp->tempdir) { 1492 $tempdir = $getid3_temp_tempdir; 1493 } 1494 unset($getid3_temp, $getid3_temp_tempdir); 1495 } 1496 } 1497 } 1498 $GetDataImageSize = false; 1499 if ($tempfilename = tempnam($tempdir, 'gI3')) { 1500 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) { 1501 fwrite($tmp, $imgData); 1502 fclose($tmp); 1503 $GetDataImageSize = @getimagesize($tempfilename, $imageinfo); 1504 if (($GetDataImageSize === false) || !isset($GetDataImageSize[0]) || !isset($GetDataImageSize[1])) { 1505 return false; 1506 } 1507 $GetDataImageSize['height'] = $GetDataImageSize[0]; 1508 $GetDataImageSize['width'] = $GetDataImageSize[1]; 1509 } 1510 unlink($tempfilename); 1511 } 1512 return $GetDataImageSize; 1513 } 1514 1515 /** 1516 * @param string $mime_type 1517 * 1518 * @return string 1519 */ 1520 public static function ImageExtFromMime($mime_type) { 1521 // temporary way, works OK for now, but should be reworked in the future 1522 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type); 1523 } 1524 1525 /** 1526 * @param array $ThisFileInfo 1527 * 1528 * @return bool 1529 */ 1530 public static function CopyTagsToComments(&$ThisFileInfo) { 1531 1532 // Copy all entries from ['tags'] into common ['comments'] 1533 if (!empty($ThisFileInfo['tags'])) { 1534 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) { 1535 foreach ($tagarray as $tagname => $tagdata) { 1536 foreach ($tagdata as $key => $value) { 1537 if (!empty($value)) { 1538 if (empty($ThisFileInfo['comments'][$tagname])) { 1539 1540 // fall through and append value 1541 1542 } elseif ($tagtype == 'id3v1') { 1543 1544 $newvaluelength = strlen(trim($value)); 1545 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1546 $oldvaluelength = strlen(trim($existingvalue)); 1547 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) { 1548 // new value is identical but shorter-than (or equal-length to) one already in comments - skip 1549 break 2; 1550 } 1551 } 1552 1553 } elseif (!is_array($value)) { 1554 1555 $newvaluelength = strlen(trim($value)); 1556 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1557 $oldvaluelength = strlen(trim($existingvalue)); 1558 if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) { 1559 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value); 1560 //break 2; 1561 break; 1562 } 1563 } 1564 1565 } 1566 if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) { 1567 $value = (is_string($value) ? trim($value) : $value); 1568 if (!is_int($key) && !ctype_digit($key)) { 1569 $ThisFileInfo['comments'][$tagname][$key] = $value; 1570 } else { 1571 if (isset($ThisFileInfo['comments'][$tagname])) { 1572 $ThisFileInfo['comments'][$tagname] = array($value); 1573 } else { 1574 $ThisFileInfo['comments'][$tagname][] = $value; 1575 } 1576 } 1577 } 1578 } 1579 } 1580 } 1581 } 1582 1583 // attempt to standardize spelling of returned keys 1584 $StandardizeFieldNames = array( 1585 'tracknumber' => 'track_number', 1586 'track' => 'track_number', 1587 ); 1588 foreach ($StandardizeFieldNames as $badkey => $goodkey) { 1589 if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) { 1590 $ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey]; 1591 unset($ThisFileInfo['comments'][$badkey]); 1592 } 1593 } 1594 1595 // Copy to ['comments_html'] 1596 if (!empty($ThisFileInfo['comments'])) { 1597 foreach ($ThisFileInfo['comments'] as $field => $values) { 1598 if ($field == 'picture') { 1599 // pictures can take up a lot of space, and we don't need multiple copies of them 1600 // let there be a single copy in [comments][picture], and not elsewhere 1601 continue; 1602 } 1603 foreach ($values as $index => $value) { 1604 if (is_array($value)) { 1605 $ThisFileInfo['comments_html'][$field][$index] = $value; 1606 } else { 1607 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding'])); 1608 } 1609 } 1610 } 1611 } 1612 1613 } 1614 return true; 1615 } 1616 1617 /** 1618 * @param string $key 1619 * @param int $begin 1620 * @param int $end 1621 * @param string $file 1622 * @param string $name 1623 * 1624 * @return string 1625 */ 1626 public static function EmbeddedLookup($key, $begin, $end, $file, $name) { 1627 1628 // Cached 1629 static $cache; 1630 if (isset($cache[$file][$name])) { 1631 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1632 } 1633 1634 // Init 1635 $keylength = strlen($key); 1636 $line_count = $end - $begin - 7; 1637 1638 // Open php file 1639 $fp = fopen($file, 'r'); 1640 1641 // Discard $begin lines 1642 for ($i = 0; $i < ($begin + 3); $i++) { 1643 fgets($fp, 1024); 1644 } 1645 1646 // Loop thru line 1647 while (0 < $line_count--) { 1648 1649 // Read line 1650 $line = ltrim(fgets($fp, 1024), "\t "); 1651 1652 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key 1653 //$keycheck = substr($line, 0, $keylength); 1654 //if ($key == $keycheck) { 1655 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1); 1656 // break; 1657 //} 1658 1659 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key 1660 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1)); 1661 $explodedLine = explode("\t", $line, 2); 1662 $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : ''); 1663 $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : ''); 1664 $cache[$file][$name][$ThisKey] = trim($ThisValue); 1665 } 1666 1667 // Close and return 1668 fclose($fp); 1669 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1670 } 1671 1672 /** 1673 * @param string $filename 1674 * @param string $sourcefile 1675 * @param bool $DieOnFailure 1676 * 1677 * @return bool 1678 * @throws Exception 1679 */ 1680 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) { 1681 global $GETID3_ERRORARRAY; 1682 1683 if (file_exists($filename)) { 1684 if (include_once($filename)) { 1685 return true; 1686 } else { 1687 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors'; 1688 } 1689 } else { 1690 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing'; 1691 } 1692 if ($DieOnFailure) { 1693 throw new Exception($diemessage); 1694 } else { 1695 $GETID3_ERRORARRAY[] = $diemessage; 1696 } 1697 return false; 1698 } 1699 1700 /** 1701 * @param string $string 1702 * 1703 * @return string 1704 */ 1705 public static function trimNullByte($string) { 1706 return trim($string, "\x00"); 1707 } 1708 1709 /** 1710 * @param string $path 1711 * 1712 * @return float|bool 1713 */ 1714 public static function getFileSizeSyscall($path) { 1715 $filesize = false; 1716 1717 if (GETID3_OS_ISWINDOWS) { 1718 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: 1719 $filesystem = new COM('Scripting.FileSystemObject'); 1720 $file = $filesystem->GetFile($path); 1721 $filesize = $file->Size(); 1722 unset($filesystem, $file); 1723 } else { 1724 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI'; 1725 } 1726 } else { 1727 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\''; 1728 } 1729 if (isset($commandline)) { 1730 $output = trim(`$commandline`); 1731 if (ctype_digit($output)) { 1732 $filesize = (float) $output; 1733 } 1734 } 1735 return $filesize; 1736 } 1737 1738 /** 1739 * @param string $filename 1740 * 1741 * @return string|false 1742 */ 1743 public static function truepath($filename) { 1744 // 2017-11-08: this could use some improvement, patches welcome 1745 if (preg_match('#^(\\\\\\\\|//)[a-z0-9]#i', $filename, $matches)) { 1746 // PHP's built-in realpath function does not work on UNC Windows shares 1747 $goodpath = array(); 1748 foreach (explode('/', str_replace('\\', '/', $filename)) as $part) { 1749 if ($part == '.') { 1750 continue; 1751 } 1752 if ($part == '..') { 1753 if (count($goodpath)) { 1754 array_pop($goodpath); 1755 } else { 1756 // cannot step above this level, already at top level 1757 return false; 1758 } 1759 } else { 1760 $goodpath[] = $part; 1761 } 1762 } 1763 return implode(DIRECTORY_SEPARATOR, $goodpath); 1764 } 1765 return realpath($filename); 1766 } 1767 1768 /** 1769 * Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268) 1770 * 1771 * @param string $path A path. 1772 * @param string $suffix If the name component ends in suffix this will also be cut off. 1773 * 1774 * @return string 1775 */ 1776 public static function mb_basename($path, $suffix = null) { 1777 $splited = preg_split('#/#', rtrim($path, '/ ')); 1778 return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1); 1779 } 1780 1781 }
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| Generated: Sun Apr 5 01:00:03 2020 | Cross-referenced by PHPXref 0.7.1 |