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File: includes/getid3/getid3.lib.php

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File: includes/getid3/getid3.lib.php
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Description: getID3 dependency
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<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at http://getid3.sourceforge.net // // or http://www.getid3.org // ///////////////////////////////////////////////////////////////// // // // getid3.lib.php - part of getID3() // // See readme.txt for more details // // /// ///////////////////////////////////////////////////////////////// class getid3_lib { static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') { $returnstring = ''; for ($i = 0; $i < strlen($string); $i++) { if ($hex) { $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT); } else { $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : '¤'); } if ($spaces) { $returnstring .= ' '; } } if (!empty($htmlencoding)) { if ($htmlencoding === true) { $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean } $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding); } return $returnstring; } static function trunc($floatnumber) { // truncates a floating-point number at the decimal point // returns int (if possible, otherwise float) if ($floatnumber >= 1) { $truncatednumber = floor($floatnumber); } elseif ($floatnumber <= -1) { $truncatednumber = ceil($floatnumber); } else { $truncatednumber = 0; } if (getid3_lib::intValueSupported($truncatednumber)) { $truncatednumber = (int) $truncatednumber; } return $truncatednumber; } static function safe_inc(&$variable, $increment=1) { if (isset($variable)) { $variable += $increment; } else { $variable = $increment; } return true; } static function CastAsInt($floatnum) { // convert to float if not already $floatnum = (float) $floatnum; // convert a float to type int, only if possible if (getid3_lib::trunc($floatnum) == $floatnum) { // it's not floating point if (getid3_lib::intValueSupported($floatnum)) { // it's within int range $floatnum = (int) $floatnum; } } return $floatnum; } public static function intValueSupported($num) { // check if integers are 64-bit static $hasINT64 = null; if ($hasINT64 === null) { // 10x faster than is_null() $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1 if (!$hasINT64 && !defined('PHP_INT_MIN')) { define('PHP_INT_MIN', ~PHP_INT_MAX); } } // if integers are 64-bit - no other check required if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { return true; } return false; } static function DecimalizeFraction($fraction) { list($numerator, $denominator) = explode('/', $fraction); return $numerator / ($denominator ? $denominator : 1); } static function DecimalBinary2Float($binarynumerator) { $numerator = getid3_lib::Bin2Dec($binarynumerator); $denominator = getid3_lib::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator))); return ($numerator / $denominator); } static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html if (strpos($binarypointnumber, '.') === false) { $binarypointnumber = '0.'.$binarypointnumber; } elseif ($binarypointnumber{0} == '.') { $binarypointnumber = '0'.$binarypointnumber; } $exponent = 0; while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) { if (substr($binarypointnumber, 1, 1) == '.') { $exponent--; $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3); } else { $pointpos = strpos($binarypointnumber, '.'); $exponent += ($pointpos - 1); $binarypointnumber = str_replace('.', '', $binarypointnumber); $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1); } } $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT); return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent); } static function Float2BinaryDecimal($floatvalue) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html $maxbits = 128; // to how many bits of precision should the calculations be taken? $intpart = getid3_lib::trunc($floatvalue); $floatpart = abs($floatvalue - $intpart); $pointbitstring = ''; while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) { $floatpart *= 2; $pointbitstring .= (string) getid3_lib::trunc($floatpart); $floatpart -= getid3_lib::trunc($floatpart); } $binarypointnumber = decbin($intpart).'.'.$pointbitstring; return $binarypointnumber; } static function Float2String($floatvalue, $bits) { // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html switch ($bits) { case 32: $exponentbits = 8; $fractionbits = 23; break; case 64: $exponentbits = 11; $fractionbits = 52; break; default: return false; break; } if ($floatvalue >= 0) { $signbit = '0'; } else { $signbit = '1'; } $normalizedbinary = getid3_lib::NormalizeBinaryPoint(getid3_lib::Float2BinaryDecimal($floatvalue), $fractionbits); $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT); $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT); return getid3_lib::BigEndian2String(getid3_lib::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false); } static function LittleEndian2Float($byteword) { return getid3_lib::BigEndian2Float(strrev($byteword)); } static function BigEndian2Float($byteword) { // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic // http://www.psc.edu/general/software/packages/ieee/ieee.html // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html $bitword = getid3_lib::BigEndian2Bin($byteword); if (!$bitword) { return 0; } $signbit = $bitword{0}; switch (strlen($byteword) * 8) { case 32: $exponentbits = 8; $fractionbits = 23; break; case 64: $exponentbits = 11; $fractionbits = 52; break; case 80: // 80-bit Apple SANE format // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/ $exponentstring = substr($bitword, 1, 15); $isnormalized = intval($bitword{16}); $fractionstring = substr($bitword, 17, 63); $exponent = pow(2, getid3_lib::Bin2Dec($exponentstring) - 16383); $fraction = $isnormalized + getid3_lib::DecimalBinary2Float($fractionstring); $floatvalue = $exponent * $fraction; if ($signbit == '1') { $floatvalue *= -1; } return $floatvalue; break; default: return false; break; } $exponentstring = substr($bitword, 1, $exponentbits); $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits); $exponent = getid3_lib::Bin2Dec($exponentstring); $fraction = getid3_lib::Bin2Dec($fractionstring); if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) { // Not a Number $floatvalue = false; } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) { if ($signbit == '1') { $floatvalue = '-infinity'; } else { $floatvalue = '+infinity'; } } elseif (($exponent == 0) && ($fraction == 0)) { if ($signbit == '1') { $floatvalue = -0; } else { $floatvalue = 0; } $floatvalue = ($signbit ? 0 : -0); } elseif (($exponent == 0) && ($fraction != 0)) { // These are 'unnormalized' values $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * getid3_lib::DecimalBinary2Float($fractionstring); if ($signbit == '1') { $floatvalue *= -1; } } elseif ($exponent != 0) { $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + getid3_lib::DecimalBinary2Float($fractionstring)); if ($signbit == '1') { $floatvalue *= -1; } } return (float) $floatvalue; } static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) { $intvalue = 0; $bytewordlen = strlen($byteword); if ($bytewordlen == 0) { return false; } for ($i = 0; $i < $bytewordlen; $i++) { if ($synchsafe) { // disregard MSB, effectively 7-bit bytes //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems $intvalue += (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7); } else { $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i)); } } if ($signed && !$synchsafe) { // synchsafe ints are not allowed to be signed if ($bytewordlen <= PHP_INT_SIZE) { $signMaskBit = 0x80 << (8 * ($bytewordlen - 1)); if ($intvalue & $signMaskBit) { $intvalue = 0 - ($intvalue & ($signMaskBit - 1)); } } else { throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in getid3_lib::BigEndian2Int()'); break; } } return getid3_lib::CastAsInt($intvalue); } static function LittleEndian2Int($byteword, $signed=false) { return getid3_lib::BigEndian2Int(strrev($byteword), false, $signed); } static function BigEndian2Bin($byteword) { $binvalue = ''; $bytewordlen = strlen($byteword); for ($i = 0; $i < $bytewordlen; $i++) { $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT); } return $binvalue; } static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) { if ($number < 0) { throw new Exception('ERROR: getid3_lib::BigEndian2String() does not support negative numbers'); } $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF); $intstring = ''; if ($signed) { if ($minbytes > PHP_INT_SIZE) { throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in getid3_lib::BigEndian2String()'); } $number = $number & (0x80 << (8 * ($minbytes - 1))); } while ($number != 0) { $quotient = ($number / ($maskbyte + 1)); $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring; $number = floor($quotient); } return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT); } static function Dec2Bin($number) { while ($number >= 256) { $bytes[] = (($number / 256) - (floor($number / 256))) * 256; $number = floor($number / 256); } $bytes[] = $number; $binstring = ''; for ($i = 0; $i < count($bytes); $i++) { $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring; } return $binstring; } static function Bin2Dec($binstring, $signed=false) { $signmult = 1; if ($signed) { if ($binstring{0} == '1') { $signmult = -1; } $binstring = substr($binstring, 1); } $decvalue = 0; for ($i = 0; $i < strlen($binstring); $i++) { $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); } return getid3_lib::CastAsInt($decvalue * $signmult); } static function Bin2String($binstring) { // return 'hi' for input of '0110100001101001' $string = ''; $binstringreversed = strrev($binstring); for ($i = 0; $i < strlen($binstringreversed); $i += 8) { $string = chr(getid3_lib::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string; } return $string; } static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) { $intstring = ''; while ($number > 0) { if ($synchsafe) { $intstring = $intstring.chr($number & 127); $number >>= 7; } else { $intstring = $intstring.chr($number & 255); $number >>= 8; } } return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT); } static function array_merge_clobber($array1, $array2) { // written by kcØhireability*com // taken from http://www.php.net/manual/en/function.array-merge-recursive.php if (!is_array($array1) || !is_array($array2)) { return false; } $newarray = $array1; foreach ($array2 as $key => $val) { if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { $newarray[$key] = getid3_lib::array_merge_clobber($newarray[$key], $val); } else { $newarray[$key] = $val; } } return $newarray; } static function array_merge_noclobber($array1, $array2) { if (!is_array($array1) || !is_array($array2)) { return false; } $newarray = $array1; foreach ($array2 as $key => $val) { if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { $newarray[$key] = getid3_lib::array_merge_noclobber($newarray[$key], $val); } elseif (!isset($newarray[$key])) { $newarray[$key] = $val; } } return $newarray; } static function ksort_recursive(&$theArray) { ksort($theArray); foreach ($theArray as $key => $value) { if (is_array($value)) { self::ksort_recursive($theArray[$key]); } } return true; } static function fileextension($filename, $numextensions=1) { if (strstr($filename, '.')) { $reversedfilename = strrev($filename); $offset = 0; for ($i = 0; $i < $numextensions; $i++) { $offset = strpos($reversedfilename, '.', $offset + 1); if ($offset === false) { return ''; } } return strrev(substr($reversedfilename, 0, $offset)); } return ''; } static function PlaytimeString($seconds) { $sign = (($seconds < 0) ? '-' : ''); $seconds = abs($seconds); $H = floor( $seconds / 3600); $M = floor(($seconds - (3600 * $H) ) / 60); $S = round( $seconds - (3600 * $H) - (60 * $M) ); return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT); } static function DateMac2Unix($macdate) { // Macintosh timestamp: seconds since 00:00h January 1, 1904 // UNIX timestamp: seconds since 00:00h January 1, 1970 return getid3_lib::CastAsInt($macdate - 2082844800); } static function FixedPoint8_8($rawdata) { return getid3_lib::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (getid3_lib::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8)); } static function FixedPoint16_16($rawdata) { return getid3_lib::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (getid3_lib::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16)); } static function FixedPoint2_30($rawdata) { $binarystring = getid3_lib::BigEndian2Bin($rawdata); return getid3_lib::Bin2Dec(substr($binarystring, 0, 2)) + (float) (getid3_lib::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30)); } static function CreateDeepArray($ArrayPath, $Separator, $Value) { // assigns $Value to a nested array path: // $foo = getid3_lib::CreateDeepArray('/path/to/my', '/', 'file.txt') // is the same as: // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt')))); // or // $foo['path']['to']['my'] = 'file.txt'; while ($ArrayPath && ($ArrayPath{0} == $Separator)) { $ArrayPath = substr($ArrayPath, 1); } if (($pos = strpos($ArrayPath, $Separator)) !== false) { $ReturnedArray[substr($ArrayPath, 0, $pos)] = getid3_lib::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value); } else { $ReturnedArray[$ArrayPath] = $Value; } return $ReturnedArray; } static function array_max($arraydata, $returnkey=false) { $maxvalue = false; $maxkey = false; foreach ($arraydata as $key => $value) { if (!is_array($value)) { if ($value > $maxvalue) { $maxvalue = $value; $maxkey = $key; } } } return ($returnkey ? $maxkey : $maxvalue); } static function array_min($arraydata, $returnkey=false) { $minvalue = false; $minkey = false; foreach ($arraydata as $key => $value) { if (!is_array($value)) { if ($value > $minvalue) { $minvalue = $value; $minkey = $key; } } } return ($returnkey ? $minkey : $minvalue); } static function XML2array($XMLstring) { if (function_exists('simplexml_load_string')) { if (function_exists('get_object_vars')) { $XMLobject = simplexml_load_string($XMLstring); return self::SimpleXMLelement2array($XMLobject); } } return false; } static function SimpleXMLelement2array($XMLobject) { if (!is_object($XMLobject) && !is_array($XMLobject)) { return $XMLobject; } $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject); foreach ($XMLarray as $key => $value) { $XMLarray[$key] = self::SimpleXMLelement2array($value); } return $XMLarray; } // Allan Hansen <ahØartemis*dk> // getid3_lib::md5_data() - returns md5sum for a file from startuing position to absolute end position static function hash_data($file, $offset, $end, $algorithm) { static $tempdir = ''; if (!getid3_lib::intValueSupported($end)) { return false; } switch ($algorithm) { case 'md5': $hash_function = 'md5_file'; $unix_call = 'md5sum'; $windows_call = 'md5sum.exe'; $hash_length = 32; break; case 'sha1': $hash_function = 'sha1_file'; $unix_call = 'sha1sum'; $windows_call = 'sha1sum.exe'; $hash_length = 40; break; default: throw new Exception('Invalid algorithm ('.$algorithm.') in getid3_lib::hash_data()'); break; } $size = $end - $offset; while (true) { if (GETID3_OS_ISWINDOWS) { // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data // Fall back to create-temp-file method: if ($algorithm == 'sha1') { break; } $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call); foreach ($RequiredFiles as $required_file) { if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) { // helper apps not available - fall back to old method break; } } $commandline = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' "'.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).'" | '; $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | '; $commandline .= GETID3_HELPERAPPSDIR.$windows_call; } else { $commandline = 'head -c'.$end.' '.escapeshellarg($file).' | '; $commandline .= 'tail -c'.$size.' | '; $commandline .= $unix_call; } if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) { //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm'); break; } return substr(`$commandline`, 0, $hash_length); } if (empty($tempdir)) { // yes this is ugly, feel free to suggest a better way require_once(dirname(__FILE__).'/getid3.php'); $getid3_temp = new getID3(); $tempdir = $getid3_temp->tempdir; unset($getid3_temp); } // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir if (($data_filename = tempnam($tempdir, 'gI3')) === false) { // can't find anywhere to create a temp file, just fail return false; } // Init $result = false; // copy parts of file try { getid3_lib::CopyFileParts($file, $data_filename, $offset, $end - $offset); $result = $hash_function($data_filename); } catch (Exception $e) { throw new Exception('getid3_lib::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage()); } unlink($data_filename); return $result; } static function CopyFileParts($filename_source, $filename_dest, $offset, $length) { if (!getid3_lib::intValueSupported($offset + $length)) { throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit'); } if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) { if (($fp_dest = fopen($filename_dest, 'wb'))) { if (fseek($fp_src, $offset, SEEK_SET) == 0) { $byteslefttowrite = $length; while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) { $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite); $byteslefttowrite -= $byteswritten; } return true; } else { throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source); } fclose($fp_dest); } else { throw new Exception('failed to create file for writing '.$filename_dest); } fclose($fp_src); } else { throw new Exception('failed to open file for reading '.$filename_source); } return false; } static function iconv_fallback_int_utf8($charval) { if ($charval < 128) { // 0bbbbbbb $newcharstring = chr($charval); } elseif ($charval < 2048) { // 110bbbbb 10bbbbbb $newcharstring = chr(($charval >> 6) | 0xC0); $newcharstring .= chr(($charval & 0x3F) | 0x80); } elseif ($charval < 65536) { // 1110bbbb 10bbbbbb 10bbbbbb $newcharstring = chr(($charval >> 12) | 0xE0); $newcharstring .= chr(($charval >> 6) | 0xC0); $newcharstring .= chr(($charval & 0x3F) | 0x80); } else { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $newcharstring = chr(($charval >> 18) | 0xF0); $newcharstring .= chr(($charval >> 12) | 0xC0); $newcharstring .= chr(($charval >> 6) | 0xC0); $newcharstring .= chr(($charval & 0x3F) | 0x80); } return $newcharstring; } // ISO-8859-1 => UTF-8 static function iconv_fallback_iso88591_utf8($string, $bom=false) { if (function_exists('utf8_encode')) { return utf8_encode($string); } // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) $newcharstring = ''; if ($bom) { $newcharstring .= "\xEF\xBB\xBF"; } for ($i = 0; $i < strlen($string); $i++) { $charval = ord($string{$i}); $newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval); } return $newcharstring; } // ISO-8859-1 => UTF-16BE static function iconv_fallback_iso88591_utf16be($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFE\xFF"; } for ($i = 0; $i < strlen($string); $i++) { $newcharstring .= "\x00".$string{$i}; } return $newcharstring; } // ISO-8859-1 => UTF-16LE static function iconv_fallback_iso88591_utf16le($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFF\xFE"; } for ($i = 0; $i < strlen($string); $i++) { $newcharstring .= $string{$i}."\x00"; } return $newcharstring; } // ISO-8859-1 => UTF-16LE (BOM) static function iconv_fallback_iso88591_utf16($string) { return getid3_lib::iconv_fallback_iso88591_utf16le($string, true); } // UTF-8 => ISO-8859-1 static function iconv_fallback_utf8_iso88591($string) { if (function_exists('utf8_decode')) { return utf8_decode($string); } // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) $newcharstring = ''; $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string{$offset}) | 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & ((ord($string{($offset + 1)}) & 0x3F) << 12) & ((ord($string{($offset + 2)}) & 0x3F) << 6) & (ord($string{($offset + 3)}) & 0x3F); $offset += 4; } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & ((ord($string{($offset + 1)}) & 0x3F) << 6) & (ord($string{($offset + 2)}) & 0x3F); $offset += 3; } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & (ord($string{($offset + 1)}) & 0x3F); $offset += 2; } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string{$offset}); $offset += 1; } else { // error? throw some kind of warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } } return $newcharstring; } // UTF-8 => UTF-16BE static function iconv_fallback_utf8_utf16be($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFE\xFF"; } $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string{$offset}) | 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & ((ord($string{($offset + 1)}) & 0x3F) << 12) & ((ord($string{($offset + 2)}) & 0x3F) << 6) & (ord($string{($offset + 3)}) & 0x3F); $offset += 4; } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & ((ord($string{($offset + 1)}) & 0x3F) << 6) & (ord($string{($offset + 2)}) & 0x3F); $offset += 3; } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & (ord($string{($offset + 1)}) & 0x3F); $offset += 2; } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string{$offset}); $offset += 1; } else { // error? throw some kind of warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 65536) ? getid3_lib::BigEndian2String($charval, 2) : "\x00".'?'); } } return $newcharstring; } // UTF-8 => UTF-16LE static function iconv_fallback_utf8_utf16le($string, $bom=false) { $newcharstring = ''; if ($bom) { $newcharstring .= "\xFF\xFE"; } $offset = 0; $stringlength = strlen($string); while ($offset < $stringlength) { if ((ord($string{$offset}) | 0x07) == 0xF7) { // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) & ((ord($string{($offset + 1)}) & 0x3F) << 12) & ((ord($string{($offset + 2)}) & 0x3F) << 6) & (ord($string{($offset + 3)}) & 0x3F); $offset += 4; } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) { // 1110bbbb 10bbbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) & ((ord($string{($offset + 1)}) & 0x3F) << 6) & (ord($string{($offset + 2)}) & 0x3F); $offset += 3; } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) { // 110bbbbb 10bbbbbb $charval = ((ord($string{($offset + 0)}) & 0x1F) << 6) & (ord($string{($offset + 1)}) & 0x3F); $offset += 2; } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) { // 0bbbbbbb $charval = ord($string{$offset}); $offset += 1; } else { // error? maybe throw some warning here? $charval = false; $offset += 1; } if ($charval !== false) { $newcharstring .= (($charval < 65536) ? getid3_lib::LittleEndian2String($charval, 2) : '?'."\x00"); } } return $newcharstring; } // UTF-8 => UTF-16LE (BOM) static function iconv_fallback_utf8_utf16($string) { return getid3_lib::iconv_fallback_utf8_utf16le($string, true); } // UTF-16BE => UTF-8 static function iconv_fallback_utf16be_utf8($string) { if (substr($string, 0, 2) == "\xFE\xFF") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::BigEndian2Int(substr($string, $i, 2)); $newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval); } return $newcharstring; } // UTF-16LE => UTF-8 static function iconv_fallback_utf16le_utf8($string) { if (substr($string, 0, 2) == "\xFF\xFE") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2)); $newcharstring .= getid3_lib::iconv_fallback_int_utf8($charval); } return $newcharstring; } // UTF-16BE => ISO-8859-1 static function iconv_fallback_utf16be_iso88591($string) { if (substr($string, 0, 2) == "\xFE\xFF") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::BigEndian2Int(substr($string, $i, 2)); $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } return $newcharstring; } // UTF-16LE => ISO-8859-1 static function iconv_fallback_utf16le_iso88591($string) { if (substr($string, 0, 2) == "\xFF\xFE") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2)); $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } return $newcharstring; } // UTF-16 (BOM) => ISO-8859-1 static function iconv_fallback_utf16_iso88591($string) { $bom = substr($string, 0, 2); if ($bom == "\xFE\xFF") { return getid3_lib::iconv_fallback_utf16be_iso88591(substr($string, 2)); } elseif ($bom == "\xFF\xFE") { return getid3_lib::iconv_fallback_utf16le_iso88591(substr($string, 2)); } return $string; } // UTF-16 (BOM) => UTF-8 static function iconv_fallback_utf16_utf8($string) { $bom = substr($string, 0, 2); if ($bom == "\xFE\xFF") { return getid3_lib::iconv_fallback_utf16be_utf8(substr($string, 2)); } elseif ($bom == "\xFF\xFE") { return getid3_lib::iconv_fallback_utf16le_utf8(substr($string, 2)); } return $string; } static function iconv_fallback($in_charset, $out_charset, $string) { if ($in_charset == $out_charset) { return $string; } // iconv() availble if (function_exists('iconv')) { if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) { switch ($out_charset) { case 'ISO-8859-1': $converted_string = rtrim($converted_string, "\x00"); break; } return $converted_string; } // iconv() may sometimes fail with "illegal character in input string" error message // and return an empty string, but returning the unconverted string is more useful return $string; } // iconv() not available static $ConversionFunctionList = array(); if (empty($ConversionFunctionList)) { $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8'; $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16'; $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be'; $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le'; $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591'; $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16'; $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be'; $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le'; $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591'; $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8'; $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591'; $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8'; $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591'; $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8'; } if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) { $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)]; return getid3_lib::$ConversionFunction($string); } throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset); } static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') { $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string $HTMLstring = ''; switch ($charset) { case '1251': case '1252': case '866': case '932': case '936': case '950': case 'BIG5': case 'BIG5-HKSCS': case 'cp1251': case 'cp1252': case 'cp866': case 'EUC-JP': case 'EUCJP': case 'GB2312': case 'ibm866': case 'ISO-8859-1': case 'ISO-8859-15': case 'ISO8859-1': case 'ISO8859-15': case 'KOI8-R': case 'koi8-ru': case 'koi8r': case 'Shift_JIS': case 'SJIS': case 'win-1251': case 'Windows-1251': case 'Windows-1252': $HTMLstring = htmlentities($string, ENT_COMPAT, $charset); break; case 'UTF-8': $strlen = strlen($string); for ($i = 0; $i < $strlen; $i++) { $char_ord_val = ord($string{$i}); $charval = 0; if ($char_ord_val < 0x80) { $charval = $char_ord_val; } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) { $charval = (($char_ord_val & 0x07) << 18); $charval += ((ord($string{++$i}) & 0x3F) << 12); $charval += ((ord($string{++$i}) & 0x3F) << 6); $charval += (ord($string{++$i}) & 0x3F); } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) { $charval = (($char_ord_val & 0x0F) << 12); $charval += ((ord($string{++$i}) & 0x3F) << 6); $charval += (ord($string{++$i}) & 0x3F); } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) { $charval = (($char_ord_val & 0x1F) << 6); $charval += (ord($string{++$i}) & 0x3F); } if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= htmlentities(chr($charval)); } else { $HTMLstring .= '&#'.$charval.';'; } } break; case 'UTF-16LE': for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2)); if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= chr($charval); } else { $HTMLstring .= '&#'.$charval.';'; } } break; case 'UTF-16BE': for ($i = 0; $i < strlen($string); $i += 2) { $charval = getid3_lib::BigEndian2Int(substr($string, $i, 2)); if (($charval >= 32) && ($charval <= 127)) { $HTMLstring .= chr($charval); } else { $HTMLstring .= '&#'.$charval.';'; } } break; default: $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()'; break; } return $HTMLstring; } static function RGADnameLookup($namecode) { static $RGADname = array(); if (empty($RGADname)) { $RGADname[0] = 'not set'; $RGADname[1] = 'Track Gain Adjustment'; $RGADname[2] = 'Album Gain Adjustment'; } return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : ''); } static function RGADoriginatorLookup($originatorcode) { static $RGADoriginator = array(); if (empty($RGADoriginator)) { $RGADoriginator[0] = 'unspecified'; $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer'; $RGADoriginator[2] = 'set by user'; $RGADoriginator[3] = 'determined automatically'; } return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : ''); } static function RGADadjustmentLookup($rawadjustment, $signbit) { $adjustment = $rawadjustment / 10; if ($signbit == 1) { $adjustment *= -1; } return (float) $adjustment; } static function RGADgainString($namecode, $originatorcode, $replaygain) { if ($replaygain < 0) { $signbit = '1'; } else { $signbit = '0'; } $storedreplaygain = intval(round($replaygain * 10)); $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT); $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT); $gainstring .= $signbit; $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT); return $gainstring; } static function RGADamplitude2dB($amplitude) { return 20 * log10($amplitude); } static function GetDataImageSize($imgData, &$imageinfo) { static $tempdir = ''; if (empty($tempdir)) { // yes this is ugly, feel free to suggest a better way require_once(dirname(__FILE__).'/getid3.php'); $getid3_temp = new getID3(); $tempdir = $getid3_temp->tempdir; unset($getid3_temp); } $GetDataImageSize = false; if ($tempfilename = tempnam($tempdir, 'gI3')) { if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) { fwrite($tmp, $imgData); fclose($tmp); $GetDataImageSize = @GetImageSize($tempfilename, $imageinfo); } unlink($tempfilename); } return $GetDataImageSize; } static function ImageTypesLookup($imagetypeid) { static $ImageTypesLookup = array(); if (empty($ImageTypesLookup)) { $ImageTypesLookup[1] = 'gif'; $ImageTypesLookup[2] = 'jpeg'; $ImageTypesLookup[3] = 'png'; $ImageTypesLookup[4] = 'swf'; $ImageTypesLookup[5] = 'psd'; $ImageTypesLookup[6] = 'bmp'; $ImageTypesLookup[7] = 'tiff (little-endian)'; $ImageTypesLookup[8] = 'tiff (big-endian)'; $ImageTypesLookup[9] = 'jpc'; $ImageTypesLookup[10] = 'jp2'; $ImageTypesLookup[11] = 'jpx'; $ImageTypesLookup[12] = 'jb2'; $ImageTypesLookup[13] = 'swc'; $ImageTypesLookup[14] = 'iff'; } return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : ''); } static function CopyTagsToComments(&$ThisFileInfo) { // Copy all entries from ['tags'] into common ['comments'] if (!empty($ThisFileInfo['tags'])) { foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) { foreach ($tagarray as $tagname => $tagdata) { foreach ($tagdata as $key => $value) { if (!empty($value)) { if (empty($ThisFileInfo['comments'][$tagname])) { // fall through and append value } elseif ($tagtype == 'id3v1') { $newvaluelength = strlen(trim($value)); foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { $oldvaluelength = strlen(trim($existingvalue)); if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) { // new value is identical but shorter-than (or equal-length to) one already in comments - skip break 2; } } } elseif (!is_array($value)) { $newvaluelength = strlen(trim($value)); foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { $oldvaluelength = strlen(trim($existingvalue)); if (($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) { $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value); break 2; } } } if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) { $value = (is_string($value) ? trim($value) : $value); $ThisFileInfo['comments'][$tagname][] = $value; } } } } } // Copy to ['comments_html'] foreach ($ThisFileInfo['comments'] as $field => $values) { if ($field == 'picture') { // pictures can take up a lot of space, and we don't need multiple copies of them // let there be a single copy in [comments][picture], and not elsewhere continue; } foreach ($values as $index => $value) { if (is_array($value)) { $ThisFileInfo['comments_html'][$field][$index] = $value; } else { $ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;', '', getid3_lib::MultiByteCharString2HTML($value, $ThisFileInfo['encoding'])); } } } } return true; } static function EmbeddedLookup($key, $begin, $end, $file, $name) { // Cached static $cache; if (isset($cache[$file][$name])) { return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); } // Init $keylength = strlen($key); $line_count = $end - $begin - 7; // Open php file $fp = fopen($file, 'r'); // Discard $begin lines for ($i = 0; $i < ($begin + 3); $i++) { fgets($fp, 1024); } // Loop thru line while (0 < $line_count--) { // Read line $line = ltrim(fgets($fp, 1024), "\t "); // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key //$keycheck = substr($line, 0, $keylength); //if ($key == $keycheck) { // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1); // break; //} // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1)); $explodedLine = explode("\t", $line, 2); $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : ''); $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : ''); $cache[$file][$name][$ThisKey] = trim($ThisValue); } // Close and return fclose($fp); return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); } static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) { global $GETID3_ERRORARRAY; if (file_exists($filename)) { if (include_once($filename)) { return true; } else { $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors'; } } else { $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing'; } if ($DieOnFailure) { throw new Exception($diemessage); } else { $GETID3_ERRORARRAY[] = $diemessage; } return false; } public static function trimNullByte($string) { return trim($string, "\x00"); } } ?>