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<?php
class getid3_lib
{
public 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("#[ -~]#", $string[$i]) ? $string[$i] : '¤');
}
if ($spaces) {
$returnstring .= ' ';
}
}
if (!empty($htmlencoding)) {
if ($htmlencoding === true) {
$htmlencoding = 'UTF-8';
}
$returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
}
return $returnstring;
}
public static function trunc($floatnumber)
{
if ($floatnumber >= 1) {
$truncatednumber = floor($floatnumber);
} elseif ($floatnumber <= -1) {
$truncatednumber = ceil($floatnumber);
} else {
$truncatednumber = 0;
}
if (self::intValueSupported($truncatednumber)) {
$truncatednumber = (int) $truncatednumber;
}
return $truncatednumber;
}
public static function safe_inc(&$variable, $increment = 1)
{
if (isset($variable)) {
$variable += $increment;
} else {
$variable = $increment;
}
return true;
}
public static function CastAsInt($floatnum)
{
$floatnum = (float) $floatnum;
if (self::trunc($floatnum) == $floatnum) {
if (self::intValueSupported($floatnum)) {
$floatnum = (int) $floatnum;
}
}
return $floatnum;
}
public static function intValueSupported($num)
{
static $hasINT64 = null;
if ($hasINT64 === null) {
$hasINT64 = is_int(pow(2, 31));
if (!$hasINT64 && !defined('PHP_INT_MIN')) {
define('PHP_INT_MIN', ~PHP_INT_MAX);
}
}
if ($hasINT64 || $num <= PHP_INT_MAX && $num >= PHP_INT_MIN) {
return true;
}
return false;
}
public static function DecimalizeFraction($fraction)
{
list($numerator, $denominator) = explode('/', $fraction);
return $numerator / ($denominator ? $denominator : 1);
}
public static function DecimalBinary2Float($binarynumerator)
{
$numerator = self::Bin2Dec($binarynumerator);
$denominator = self::Bin2Dec('1' . str_repeat('0', strlen($binarynumerator)));
return $numerator / $denominator;
}
public static function NormalizeBinaryPoint($binarypointnumber, $maxbits = 52)
{
if (strpos($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) $exponent);
}
public static function Float2BinaryDecimal($floatvalue)
{
$maxbits = 128;
$intpart = self::trunc($floatvalue);
$floatpart = abs($floatvalue - $intpart);
$pointbitstring = '';
while ($floatpart != 0 && strlen($pointbitstring) < $maxbits) {
$floatpart *= 2;
$pointbitstring .= (string) self::trunc($floatpart);
$floatpart -= self::trunc($floatpart);
}
$binarypointnumber = decbin($intpart) . '.' . $pointbitstring;
return $binarypointnumber;
}
public static function Float2String($floatvalue, $bits)
{
$exponentbits = 0;
$fractionbits = 0;
switch ($bits) {
case 32:
$exponentbits = 8;
$fractionbits = 23;
break;
case 64:
$exponentbits = 11;
$fractionbits = 52;
break;
default:
return false;
}
if ($floatvalue >= 0) {
$signbit = '0';
} else {
$signbit = '1';
}
$normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
$biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent'];
$exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
$fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
return self::BigEndian2String(self::Bin2Dec($signbit . $exponentbitstring . $fractionbitstring), $bits % 8, false);
}
public static function LittleEndian2Float($byteword)
{
return self::BigEndian2Float(strrev($byteword));
}
public static function BigEndian2Float($byteword)
{
$bitword = self::BigEndian2Bin($byteword);
if (!$bitword) {
return 0;
}
$signbit = $bitword[0];
$floatvalue = 0;
$exponentbits = 0;
$fractionbits = 0;
switch (strlen($byteword) * 8) {
case 32:
$exponentbits = 8;
$fractionbits = 23;
break;
case 64:
$exponentbits = 11;
$fractionbits = 52;
break;
case 80:
$exponentstring = substr($bitword, 1, 15);
$isnormalized = intval($bitword[16]);
$fractionstring = substr($bitword, 17, 63);
$exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
$fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
$floatvalue = $exponent * $fraction;
if ($signbit == '1') {
$floatvalue *= -1;
}
return $floatvalue;
default:
return false;
}
$exponentstring = substr($bitword, 1, $exponentbits);
$fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
$exponent = self::Bin2Dec($exponentstring);
$fraction = self::Bin2Dec($fractionstring);
if ($exponent == pow(2, $exponentbits) - 1 && $fraction != 0) {
$floatvalue = false;
} elseif ($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) {
$floatvalue = pow(2, -1 * (pow(2, $exponentbits - 1) - 2)) * self::DecimalBinary2Float($fractionstring);
if ($signbit == '1') {
$floatvalue *= -1;
}
} elseif ($exponent != 0) {
$floatvalue = pow(2, $exponent - (pow(2, $exponentbits - 1) - 1)) * (1 + self::DecimalBinary2Float($fractionstring));
if ($signbit == '1') {
$floatvalue *= -1;
}
}
return (float) $floatvalue;
}
public static function BigEndian2Int($byteword, $synchsafe = false, $signed = false)
{
$intvalue = 0;
$bytewordlen = strlen($byteword);
if ($bytewordlen == 0) {
return false;
}
for ($i = 0; $i < $bytewordlen; $i++) {
if ($synchsafe) {
$intvalue += (ord($byteword[$i]) & 0x7f) * pow(2, ($bytewordlen - 1 - $i) * 7);
} else {
$intvalue += ord($byteword[$i]) * pow(256, $bytewordlen - 1 - $i);
}
}
if ($signed && !$synchsafe) {
if ($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 self::BigEndian2Int()');
}
}
return self::CastAsInt($intvalue);
}
public static function LittleEndian2Int($byteword, $signed = false)
{
return self::BigEndian2Int(strrev($byteword), false, $signed);
}
public static function LittleEndian2Bin($byteword)
{
return self::BigEndian2Bin(strrev($byteword));
}
public static function BigEndian2Bin($byteword)
{
$binvalue = '';
$bytewordlen = strlen($byteword);
for ($i = 0; $i < $bytewordlen; $i++) {
$binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT);
}
return $binvalue;
}
public static function BigEndian2String($number, $minbytes = 1, $synchsafe = false, $signed = false)
{
if ($number < 0) {
throw new Exception('ERROR: self::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 self::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, $minbytes, "\0", STR_PAD_LEFT);
}
public static function Dec2Bin($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 $binstring;
}
public static function Bin2Dec($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, $i);
}
return self::CastAsInt($decvalue * $signmult);
}
public static function Bin2String($binstring)
{
$string = '';
$binstringreversed = strrev($binstring);
for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
$string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))) . $string;
}
return $string;
}
public static function LittleEndian2String($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, $minbytes, "\0", STR_PAD_RIGHT);
}
public static function array_merge_clobber($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] = self::array_merge_clobber($newarray[$key], $val);
} else {
$newarray[$key] = $val;
}
}
return $newarray;
}
public static function array_merge_noclobber($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] = self::array_merge_noclobber($newarray[$key], $val);
} elseif (!isset($newarray[$key])) {
$newarray[$key] = $val;
}
}
return $newarray;
}
public static function flipped_array_merge_noclobber($array1, $array2)
{
if (!is_array($array1) || !is_array($array2)) {
return false;
}
$newarray = array_flip($array1);
foreach (array_flip($array2) as $key => $val) {
if (!isset($newarray[$key])) {
$newarray[$key] = count($newarray);
}
}
return array_flip($newarray);
}
public static function ksort_recursive(&$theArray)
{
ksort($theArray);
foreach ($theArray as $key => $value) {
if (is_array($value)) {
self::ksort_recursive($theArray[$key]);
}
}
return true;
}
public 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, $offset));
}
return '';
}
public static function PlaytimeString($seconds)
{
$sign = $seconds < 0 ? '-' : '';
$seconds = round(abs($seconds));
$H = (int) floor($seconds / 3600);
$M = (int) floor(($seconds - 3600 * $H) / 60);
$S = (int) round($seconds - 3600 * $H - 60 * $M);
return $sign . ($H ? $H . ':' : '') . ($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)) . ':' . str_pad($S, 2, 0, STR_PAD_LEFT);
}
public static function DateMac2Unix($macdate)
{
return self::CastAsInt($macdate - 2082844800);
}
public static function FixedPoint8_8($rawdata)
{
return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
}
public static function FixedPoint16_16($rawdata)
{
return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
}
public static function FixedPoint2_30($rawdata)
{
$binarystring = self::BigEndian2Bin($rawdata);
return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
}
public static function CreateDeepArray($ArrayPath, $Separator, $Value)
{
$ArrayPath = ltrim($ArrayPath, $Separator);
if (($pos = strpos($ArrayPath, $Separator)) !== false) {
$ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
} else {
$ReturnedArray[$ArrayPath] = $Value;
}
return $ReturnedArray;
}
public static function array_max($arraydata, $returnkey = false)
{
$maxvalue = false;
$maxkey = false;
foreach ($arraydata as $key => $value) {
if (!is_array($value)) {
if ($maxvalue === false || $value > $maxvalue) {
$maxvalue = $value;
$maxkey = $key;
}
}
}
return $returnkey ? $maxkey : $maxvalue;
}
public static function array_min($arraydata, $returnkey = false)
{
$minvalue = false;
$minkey = false;
foreach ($arraydata as $key => $value) {
if (!is_array($value)) {
if ($minvalue === false || $value < $minvalue) {
$minvalue = $value;
$minkey = $key;
}
}
}
return $returnkey ? $minkey : $minvalue;
}
public static function XML2array($XMLstring)
{
if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
if (PHP_VERSION_ID < 80000) {
$loader = libxml_disable_entity_loader(true);
}
$XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT);
$return = self::SimpleXMLelement2array($XMLobject);
if (PHP_VERSION_ID < 80000 && isset($loader)) {
libxml_disable_entity_loader($loader);
}
return $return;
}
return false;
}
public static function SimpleXMLelement2array($XMLobject)
{
if (!is_object($XMLobject) && !is_array($XMLobject)) {
return $XMLobject;
}
$XMLarray = $XMLobject instanceof SimpleXMLElement ? get_object_vars($XMLobject) : $XMLobject;
foreach ($XMLarray as $key => $value) {
$XMLarray[$key] = self::SimpleXMLelement2array($value);
}
return $XMLarray;
}
public static function hash_data($file, $offset, $end, $algorithm)
{
if (!self::intValueSupported($end)) {
return false;
}
if (!in_array($algorithm, array('md5', 'sha1'))) {
throw new getid3_exception('Invalid algorithm (' . $algorithm . ') in self::hash_data()');
}
$size = $end - $offset;
$fp = fopen($file, 'rb');
fseek($fp, $offset);
$ctx = hash_init($algorithm);
while ($size > 0) {
$buffer = fread($fp, min($size, getID3::FREAD_BUFFER_SIZE));
hash_update($ctx, $buffer);
$size -= getID3::FREAD_BUFFER_SIZE;
}
$hash = hash_final($ctx);
fclose($fp);
return $hash;
}
public static function CopyFileParts($filename_source, $filename_dest, $offset, $length)
{
if (!self::intValueSupported($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) == 0) {
$byteslefttowrite = $length;
while ($byteslefttowrite > 0 && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
$byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
$byteslefttowrite -= $byteswritten;
}
fclose($fp_dest);
return true;
} else {
fclose($fp_src);
throw new Exception('failed to seek to offset ' . $offset . ' in ' . $filename_source);
}
} else {
throw new Exception('failed to create file for writing ' . $filename_dest);
}
} else {
throw new Exception('failed to open file for reading ' . $filename_source);
}
}
public static function iconv_fallback_int_utf8($charval)
{
if ($charval < 128) {
$newcharstring = chr($charval);
} elseif ($charval < 2048) {
$newcharstring = chr($charval >> 6 | 0xc0);
$newcharstring .= chr($charval & 0x3f | 0x80);
} elseif ($charval < 65536) {
$newcharstring = chr($charval >> 12 | 0xe0);
$newcharstring .= chr($charval >> 6 | 0xc0);
$newcharstring .= chr($charval & 0x3f | 0x80);
} else {
$newcharstring = chr($charval >> 18 | 0xf0);
$newcharstring .= chr($charval >> 12 | 0xc0);
$newcharstring .= chr($charval >> 6 | 0xc0);
$newcharstring .= chr($charval & 0x3f | 0x80);
}
return $newcharstring;
}
public static function iconv_fallback_iso88591_utf8($string, $bom = false)
{
if (function_exists('utf8_encode')) {
return utf8_encode($string);
}
$newcharstring = '';
if ($bom) {
$newcharstring .= "";
}
for ($i = 0; $i < strlen($string); $i++) {
$charval = ord($string[$i]);
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
public static function iconv_fallback_iso88591_utf16be($string, $bom = false)
{
$newcharstring = '';
if ($bom) {
$newcharstring .= "";
}
for ($i = 0; $i < strlen($string); $i++) {
$newcharstring .= "\0" . $string[$i];
}
return $newcharstring;
}
public static function iconv_fallback_iso88591_utf16le($string, $bom = false)
{
$newcharstring = '';
if ($bom) {
$newcharstring .= "";
}
for ($i = 0; $i < strlen($string); $i++) {
$newcharstring .= $string[$i] . "\0";
}
return $newcharstring;
}
public static function iconv_fallback_iso88591_utf16($string)
{
return self::iconv_fallback_iso88591_utf16le($string, true);
}
public static function iconv_fallback_utf8_iso88591($string)
{
if (function_exists('utf8_decode')) {
return utf8_decode($string);
}
$newcharstring = '';
$offset = 0;
$stringlength = strlen($string);
while ($offset < $stringlength) {
if ((ord($string[$offset]) | 0x7) == 0xf7) {
$charval = (ord($string[$offset + 0]) & 0x7) << 18 & (ord($string[$offset + 1]) & 0x3f) << 12 & (ord($string[$offset + 2]) & 0x3f) << 6 & (ord($string[$offset + 3]) & 0x3f);
$offset += 4;
} elseif ((ord($string[$offset]) | 0xf) == 0xef) {
$charval = (ord($string[$offset + 0]) & 0xf) << 12 & (ord($string[$offset + 1]) & 0x3f) << 6 & (ord($string[$offset + 2]) & 0x3f);
$offset += 3;
} elseif ((ord($string[$offset]) | 0x1f) == 0xdf) {
$charval = (ord($string[$offset + 0]) & 0x1f) << 6 & (ord($string[$offset + 1]) & 0x3f);
$offset += 2;
} elseif ((ord($string[$offset]) | 0x7f) == 0x7f) {
$charval = ord($string[$offset]);
$offset += 1;
} else {
$charval = false;
$offset += 1;
}
if ($charval !== false) {
$newcharstring .= $charval < 256 ? chr($charval) : '?';
}
}
return $newcharstring;
}
public static function iconv_fallback_utf8_utf16be($string, $bom = false)
{
$newcharstring = '';
if ($bom) {
$newcharstring .= "";
}
$offset = 0;
$stringlength = strlen($string);
while ($offset < $stringlength) {
if ((ord($string[$offset]) | 0x7) == 0xf7) {
$charval = (ord($string[$offset + 0]) & 0x7) << 18 & (ord($string[$offset + 1]) & 0x3f) << 12 & (ord($string[$offset + 2]) & 0x3f) << 6 & (ord($string[$offset + 3]) & 0x3f);
$offset += 4;
} elseif ((ord($string[$offset]) | 0xf) == 0xef) {
$charval = (ord($string[$offset + 0]) & 0xf) << 12 & (ord($string[$offset + 1]) & 0x3f) << 6 & (ord($string[$offset + 2]) & 0x3f);
$offset += 3;
} elseif ((ord($string[$offset]) | 0x1f) == 0xdf) {
$charval = (ord($string[$offset + 0]) & 0x1f) << 6 & (ord($string[$offset + 1]) & 0x3f);
$offset += 2;
} elseif ((ord($string[$offset]) | 0x7f) == 0x7f) {
$charval = ord($string[$offset]);
$offset += 1;
} else {
$charval = false;
$offset += 1;
}
if ($charval !== false) {
$newcharstring .= $charval < 65536 ? self::BigEndian2String($charval, 2) : "\0" . '?';
}
}
return $newcharstring;
}
public static function iconv_fallback_utf8_utf16le($string, $bom = false)
{
$newcharstring = '';
if ($bom) {
$newcharstring .= "";
}
$offset = 0;
$stringlength = strlen($string);
while ($offset < $stringlength) {
if ((ord($string[$offset]) | 0x7) == 0xf7) {
$charval = (ord($string[$offset + 0]) & 0x7) << 18 & (ord($string[$offset + 1]) & 0x3f) << 12 & (ord($string[$offset + 2]) & 0x3f) << 6 & (ord($string[$offset + 3]) & 0x3f);
$offset += 4;
} elseif ((ord($string[$offset]) | 0xf) == 0xef) {
$charval = (ord($string[$offset + 0]) & 0xf) << 12 & (ord($string[$offset + 1]) & 0x3f) << 6 & (ord($string[$offset + 2]) & 0x3f);
$offset += 3;
} elseif ((ord($string[$offset]) | 0x1f) == 0xdf) {
$charval = (ord($string[$offset + 0]) & 0x1f) << 6 & (ord($string[$offset + 1]) & 0x3f);
$offset += 2;
} elseif ((ord($string[$offset]) | 0x7f) == 0x7f) {
$charval = ord($string[$offset]);
$offset += 1;
} else {
$charval = false;
$offset += 1;
}
if ($charval !== false) {
$newcharstring .= $charval < 65536 ? self::LittleEndian2String($charval, 2) : '?' . "\0";
}
}
return $newcharstring;
}
public static function iconv_fallback_utf8_utf16($string)
{
return self::iconv_fallback_utf8_utf16le($string, true);
}
public static function iconv_fallback_utf16be_utf8($string)
{
if (substr($string, 0, 2) == "") {
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::BigEndian2Int(substr($string, $i, 2));
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
public static function iconv_fallback_utf16le_utf8($string)
{
if (substr($string, 0, 2) == "") {
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::LittleEndian2Int(substr($string, $i, 2));
$newcharstring .= self::iconv_fallback_int_utf8($charval);
}
return $newcharstring;
}
public static function iconv_fallback_utf16be_iso88591($string)
{
if (substr($string, 0, 2) == "") {
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::BigEndian2Int(substr($string, $i, 2));
$newcharstring .= $charval < 256 ? chr($charval) : '?';
}
return $newcharstring;
}
public static function iconv_fallback_utf16le_iso88591($string)
{
if (substr($string, 0, 2) == "") {
$string = substr($string, 2);
}
$newcharstring = '';
for ($i = 0; $i < strlen($string); $i += 2) {
$charval = self::LittleEndian2Int(substr($string, $i, 2));
$newcharstring .= $charval < 256 ? chr($charval) : '?';
}
return $newcharstring;
}
public static function iconv_fallback_utf16_iso88591($string)
{
$bom = substr($string, 0, 2);
if ($bom == "") {
return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
} elseif ($bom == "") {
return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
}
return $string;
}
public static function iconv_fallback_utf16_utf8($string)
{
$bom = substr($string, 0, 2);
if ($bom == "") {
return self::iconv_fallback_utf16be_utf8(substr($string, 2));
} elseif ($bom == "") {
return self::iconv_fallback_utf16le_utf8(substr($string, 2));
}
return $string;
}
public static function iconv_fallback($in_charset, $out_charset, $string)
{
if ($in_charset == $out_charset) {
return $string;
}
if (function_exists('mb_convert_encoding')) {
if (strtoupper($in_charset) == 'UTF-16' && substr($string, 0, 2) != "" && substr($string, 0, 2) != "") {
$string = "" . $string;
}
if (strtoupper($in_charset) == 'UTF-16' && strtoupper($out_charset) == 'UTF-8') {
if ($string == "" || $string == "") {
return '';
}
}
if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) {
switch ($out_charset) {
case 'ISO-8859-1':
$converted_string = rtrim($converted_string, "\0");
break;
}
return $converted_string;
}
return $string;
} elseif (function_exists('iconv')) {
if ($converted_string = @iconv($in_charset, $out_charset . '//TRANSLIT', $string)) {
switch ($out_charset) {
case 'ISO-8859-1':
$converted_string = rtrim($converted_string, "\0");
break;
}
return $converted_string;
}
return $string;
}
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($out_charset)];
return self::$ConversionFunction($string);
}
throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from ' . $in_charset . ' to ' . $out_charset);
}
public static function recursiveMultiByteCharString2HTML($data, $charset = 'ISO-8859-1')
{
if (is_string($data)) {
return self::MultiByteCharString2HTML($data, $charset);
} elseif (is_array($data)) {
$return_data = array();
foreach ($data as $key => $value) {
$return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset);
}
return $return_data;
}
return $data;
}
public static function MultiByteCharString2HTML($string, $charset = 'ISO-8859-1')
{
$string = (string) $string;
$HTMLstring = '';
switch (strtolower($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 == 0xf && $i + 3 < $strlen) {
$charval = ($char_ord_val & 0x7) << 18;
$charval += (ord($string[++$i]) & 0x3f) << 12;
$charval += (ord($string[++$i]) & 0x3f) << 6;
$charval += ord($string[++$i]) & 0x3f;
} elseif (($char_ord_val & 0xe0) >> 5 == 0x7 && $i + 2 < $strlen) {
$charval = ($char_ord_val & 0xf) << 12;
$charval += (ord($string[++$i]) & 0x3f) << 6;
$charval += ord($string[++$i]) & 0x3f;
} elseif (($char_ord_val & 0xc0) >> 6 == 0x3 && $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) {
$charval = self::LittleEndian2Int(substr($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) {
$charval = self::BigEndian2Int(substr($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 $HTMLstring;
}
public static function RGADnameLookup($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] : '';
}
public 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] : '';
}
public static function RGADadjustmentLookup($rawadjustment, $signbit)
{
$adjustment = (float) $rawadjustment / 10;
if ($signbit == 1) {
$adjustment *= -1;
}
return $adjustment;
}
public static function RGADgainString($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 $gainstring;
}
public static function RGADamplitude2dB($amplitude)
{
return 20 * log10($amplitude);
}
public static function GetDataImageSize($imgData, &$imageinfo = array())
{
if (PHP_VERSION_ID >= 50400) {
$GetDataImageSize = @getimagesizefromstring($imgData, $imageinfo);
if ($GetDataImageSize === false || !isset($GetDataImageSize[0], $GetDataImageSize[1])) {
return false;
}
$GetDataImageSize['height'] = $GetDataImageSize[0];
$GetDataImageSize['width'] = $GetDataImageSize[1];
return $GetDataImageSize;
}
static $tempdir = '';
if (empty($tempdir)) {
if (function_exists('sys_get_temp_dir')) {
$tempdir = sys_get_temp_dir();
}
if (include_once dirname(__FILE__) . '/getid3.php') {
$getid3_temp = new getID3();
if ($getid3_temp_tempdir = $getid3_temp->tempdir) {
$tempdir = $getid3_temp_tempdir;
}
unset($getid3_temp, $getid3_temp_tempdir);
}
}
$GetDataImageSize = false;
if ($tempfilename = tempnam($tempdir, 'gI3')) {
if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
fwrite($tmp, $imgData);
fclose($tmp);
$GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
if ($GetDataImageSize === false || !isset($GetDataImageSize[0]) || !isset($GetDataImageSize[1])) {
return false;
}
$GetDataImageSize['height'] = $GetDataImageSize[0];
$GetDataImageSize['width'] = $GetDataImageSize[1];
}
unlink($tempfilename);
}
return $GetDataImageSize;
}
public static function ImageExtFromMime($mime_type)
{
return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
}
public static function CopyTagsToComments(&$ThisFileInfo, $option_tags_html = true)
{
if (!empty($ThisFileInfo['tags'])) {
if (isset($ThisFileInfo['tags']['id3v1'])) {
$ID3v1 = $ThisFileInfo['tags']['id3v1'];
unset($ThisFileInfo['tags']['id3v1']);
$ThisFileInfo['tags']['id3v1'] = $ID3v1;
unset($ID3v1);
}
foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
foreach ($tagarray as $tagname => $tagdata) {
foreach ($tagdata as $key => $value) {
if (!empty($value)) {
if (empty($ThisFileInfo['comments'][$tagname])) {
} 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)) {
break 2;
}
}
if (function_exists('mb_convert_encoding')) {
if (trim($value) == trim(substr(mb_convert_encoding($existingvalue, $ThisFileInfo['id3v1']['encoding'], $ThisFileInfo['encoding']), 0, 30))) {
break 2;
}
}
} elseif (!is_array($value)) {
$newvaluelength = strlen(trim($value));
foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
$oldvaluelength = strlen(trim($existingvalue));
if (strlen($existingvalue) > 10 && $newvaluelength > $oldvaluelength && substr(trim($value), 0, strlen($existingvalue)) == $existingvalue) {
$ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
break;
}
}
}
if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
$value = is_string($value) ? trim($value) : $value;
if (!is_int($key) && !ctype_digit($key)) {
$ThisFileInfo['comments'][$tagname][$key] = $value;
} else {
if (!isset($ThisFileInfo['comments'][$tagname])) {
$ThisFileInfo['comments'][$tagname] = array($value);
} else {
$ThisFileInfo['comments'][$tagname][] = $value;
}
}
}
}
}
}
}
$StandardizeFieldNames = array('tracknumber' => 'track_number', 'track' => 'track_number');
foreach ($StandardizeFieldNames as $badkey => $goodkey) {
if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) {
$ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey];
unset($ThisFileInfo['comments'][$badkey]);
}
}
if ($option_tags_html) {
if (!empty($ThisFileInfo['comments'])) {
foreach ($ThisFileInfo['comments'] as $field => $values) {
if ($field == 'picture') {
continue;
}
foreach ($values as $index => $value) {
if (is_array($value)) {
$ThisFileInfo['comments_html'][$field][$index] = $value;
} else {
$ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
}
}
}
}
}
}
return true;
}
public static function EmbeddedLookup($key, $begin, $end, $file, $name)
{
static $cache;
if (isset($cache[$file][$name])) {
return isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '';
}
$keylength = strlen($key);
$line_count = $end - $begin - 7;
$fp = fopen($file, 'r');
for ($i = 0; $i < $begin + 3; $i++) {
fgets($fp, 1024);
}
while (0 < $line_count--) {
$line = ltrim(fgets($fp, 1024), "\t ");
$explodedLine = explode("\t", $line, 2);
$ThisKey = isset($explodedLine[0]) ? $explodedLine[0] : '';
$ThisValue = isset($explodedLine[1]) ? $explodedLine[1] : '';
$cache[$file][$name][$ThisKey] = trim($ThisValue);
}
fclose($fp);
return isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '';
}
public 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($string, "\0");
}
public static function getFileSizeSyscall($path)
{
$filesize = false;
if (GETID3_OS_ISWINDOWS) {
if (class_exists('COM')) {
$filesystem = new COM('Scripting.FileSystemObject');
$file = $filesystem->GetFile($path);
$filesize = $file->Size();
unset($filesystem, $file);
} else {
$commandline = 'for %I in (' . escapeshellarg($path) . ') do @echo %~zI';
}
} else {
$commandline = 'ls -l ' . escapeshellarg($path) . ' | awk \'{print $5}\'';
}
if (isset($commandline)) {
$output = trim(`{$commandline}`);
if (ctype_digit($output)) {
$filesize = (float) $output;
}
}
return $filesize;
}
public static function truepath($filename)
{
if (preg_match('#^(\\\\\\\\|//)[a-z0-9]#i', $filename, $matches)) {
$goodpath = array();
foreach (explode('/', str_replace('\\', '/', $filename)) as $part) {
if ($part == '.') {
continue;
}
if ($part == '..') {
if (count($goodpath)) {
array_pop($goodpath);
} else {
return false;
}
} else {
$goodpath[] = $part;
}
}
return implode(DIRECTORY_SEPARATOR, $goodpath);
}
return realpath($filename);
}
public static function mb_basename($path, $suffix = null)
{
$splited = preg_split('#/#', rtrim($path, '/ '));
return substr(basename('X' . $splited[count($splited) - 1], $suffix), 1);
}
}