1804 lines
52 KiB
PHP
1804 lines
52 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <info@getid3.org> //
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// available at https://github.com/JamesHeinrich/getID3 //
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// or https://www.getid3.org //
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// or http://getid3.sourceforge.net //
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// //
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// getid3.lib.php - part of getID3() //
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// see readme.txt for more details //
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// ///
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/////////////////////////////////////////////////////////////////
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class getid3_lib
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{
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/**
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* @param string $string
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* @param bool $hex
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* @param bool $spaces
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* @param string|bool $htmlencoding
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*
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* @return string
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*/
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public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
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$returnstring = '';
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for ($i = 0; $i < strlen($string); $i++) {
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if ($hex) {
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$returnstring .= str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT);
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} else {
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$returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string[$i]) ? $string[$i] : '¤');
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}
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if ($spaces) {
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$returnstring .= ' ';
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}
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}
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if (!empty($htmlencoding)) {
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if ($htmlencoding === true) {
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$htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
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}
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$returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
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}
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return $returnstring;
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}
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/**
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* Truncates a floating-point number at the decimal point.
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*
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* @param float $floatnumber
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*
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* @return float|int returns int (if possible, otherwise float)
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*/
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public static function trunc($floatnumber) {
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if ($floatnumber >= 1) {
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$truncatednumber = floor($floatnumber);
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} elseif ($floatnumber <= -1) {
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$truncatednumber = ceil($floatnumber);
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} else {
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$truncatednumber = 0;
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}
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if (self::intValueSupported($truncatednumber)) {
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$truncatednumber = (int) $truncatednumber;
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}
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return $truncatednumber;
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}
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/**
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* @param int|null $variable
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* @param int $increment
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*
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* @return bool
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*/
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public static function safe_inc(&$variable, $increment=1) {
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if (isset($variable)) {
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$variable += $increment;
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} else {
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$variable = $increment;
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}
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return true;
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}
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/**
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* @param int|float $floatnum
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*
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* @return int|float
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*/
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public static function CastAsInt($floatnum) {
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// convert to float if not already
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$floatnum = (float) $floatnum;
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// convert a float to type int, only if possible
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if (self::trunc($floatnum) == $floatnum) {
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// it's not floating point
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if (self::intValueSupported($floatnum)) {
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// it's within int range
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$floatnum = (int) $floatnum;
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}
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}
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return $floatnum;
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}
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/**
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* @param int $num
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*
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* @return bool
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*/
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public static function intValueSupported($num) {
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// check if integers are 64-bit
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static $hasINT64 = null;
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if ($hasINT64 === null) { // 10x faster than is_null()
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$hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
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if (!$hasINT64 && !defined('PHP_INT_MIN')) {
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define('PHP_INT_MIN', ~PHP_INT_MAX);
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}
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}
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// if integers are 64-bit - no other check required
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if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { // phpcs:ignore PHPCompatibility.Constants.NewConstants.php_int_minFound
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return true;
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}
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return false;
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}
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/**
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* @param string $fraction
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*
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* @return float
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*/
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public static function DecimalizeFraction($fraction) {
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list($numerator, $denominator) = explode('/', $fraction);
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return $numerator / ($denominator ? $denominator : 1);
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}
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/**
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* @param string $binarynumerator
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*
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* @return float
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*/
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public static function DecimalBinary2Float($binarynumerator) {
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$numerator = self::Bin2Dec($binarynumerator);
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$denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
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return ($numerator / $denominator);
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}
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/**
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* @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
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*
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* @param string $binarypointnumber
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* @param int $maxbits
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*
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* @return array
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*/
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public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
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if (strpos($binarypointnumber, '.') === false) {
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$binarypointnumber = '0.'.$binarypointnumber;
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} elseif ($binarypointnumber[0] == '.') {
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$binarypointnumber = '0'.$binarypointnumber;
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}
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$exponent = 0;
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while (($binarypointnumber[0] != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
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if (substr($binarypointnumber, 1, 1) == '.') {
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$exponent--;
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$binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
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} else {
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$pointpos = strpos($binarypointnumber, '.');
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$exponent += ($pointpos - 1);
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$binarypointnumber = str_replace('.', '', $binarypointnumber);
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$binarypointnumber = $binarypointnumber[0].'.'.substr($binarypointnumber, 1);
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}
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}
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$binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
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return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
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}
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/**
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* @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
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*
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* @param float $floatvalue
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*
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* @return string
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*/
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public static function Float2BinaryDecimal($floatvalue) {
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$maxbits = 128; // to how many bits of precision should the calculations be taken?
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$intpart = self::trunc($floatvalue);
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$floatpart = abs($floatvalue - $intpart);
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$pointbitstring = '';
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while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
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$floatpart *= 2;
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$pointbitstring .= (string) self::trunc($floatpart);
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$floatpart -= self::trunc($floatpart);
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}
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$binarypointnumber = decbin($intpart).'.'.$pointbitstring;
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return $binarypointnumber;
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}
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/**
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* @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
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*
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* @param float $floatvalue
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* @param int $bits
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*
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* @return string|false
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*/
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public static function Float2String($floatvalue, $bits) {
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$exponentbits = 0;
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$fractionbits = 0;
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switch ($bits) {
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case 32:
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$exponentbits = 8;
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$fractionbits = 23;
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break;
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case 64:
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$exponentbits = 11;
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$fractionbits = 52;
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break;
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default:
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return false;
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}
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if ($floatvalue >= 0) {
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$signbit = '0';
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} else {
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$signbit = '1';
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}
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$normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
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$biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
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$exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
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$fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
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return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
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}
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/**
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* @param string $byteword
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*
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* @return float|false
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*/
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public static function LittleEndian2Float($byteword) {
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return self::BigEndian2Float(strrev($byteword));
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}
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/**
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* ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
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*
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* @link http://www.psc.edu/general/software/packages/ieee/ieee.html
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* @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
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*
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* @param string $byteword
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*
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* @return float|false
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*/
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public static function BigEndian2Float($byteword) {
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$bitword = self::BigEndian2Bin($byteword);
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if (!$bitword) {
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return 0;
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}
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$signbit = $bitword[0];
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$floatvalue = 0;
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$exponentbits = 0;
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$fractionbits = 0;
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switch (strlen($byteword) * 8) {
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case 32:
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$exponentbits = 8;
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$fractionbits = 23;
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break;
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case 64:
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$exponentbits = 11;
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$fractionbits = 52;
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break;
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case 80:
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// 80-bit Apple SANE format
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// http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
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$exponentstring = substr($bitword, 1, 15);
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$isnormalized = intval($bitword[16]);
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$fractionstring = substr($bitword, 17, 63);
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$exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
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$fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
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$floatvalue = $exponent * $fraction;
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if ($signbit == '1') {
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$floatvalue *= -1;
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}
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return $floatvalue;
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default:
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return false;
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}
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$exponentstring = substr($bitword, 1, $exponentbits);
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$fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
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$exponent = self::Bin2Dec($exponentstring);
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$fraction = self::Bin2Dec($fractionstring);
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if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
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// Not a Number
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$floatvalue = false;
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} elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
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if ($signbit == '1') {
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$floatvalue = '-infinity';
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} else {
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$floatvalue = '+infinity';
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}
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} elseif (($exponent == 0) && ($fraction == 0)) {
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if ($signbit == '1') {
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$floatvalue = -0;
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} else {
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$floatvalue = 0;
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}
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$floatvalue = ($signbit ? 0 : -0);
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} elseif (($exponent == 0) && ($fraction != 0)) {
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// These are 'unnormalized' values
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$floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
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if ($signbit == '1') {
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$floatvalue *= -1;
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}
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} elseif ($exponent != 0) {
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$floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
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if ($signbit == '1') {
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$floatvalue *= -1;
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}
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}
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return (float) $floatvalue;
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}
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/**
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* @param string $byteword
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* @param bool $synchsafe
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* @param bool $signed
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*
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* @return int|float|false
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* @throws Exception
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*/
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public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
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$intvalue = 0;
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$bytewordlen = strlen($byteword);
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if ($bytewordlen == 0) {
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return false;
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}
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for ($i = 0; $i < $bytewordlen; $i++) {
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if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
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//$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
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$intvalue += (ord($byteword[$i]) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
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} else {
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$intvalue += ord($byteword[$i]) * pow(256, ($bytewordlen - 1 - $i));
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}
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}
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if ($signed && !$synchsafe) {
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// synchsafe ints are not allowed to be signed
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if ($bytewordlen <= PHP_INT_SIZE) {
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$signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
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if ($intvalue & $signMaskBit) {
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$intvalue = 0 - ($intvalue & ($signMaskBit - 1));
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}
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} else {
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throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
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}
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}
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return self::CastAsInt($intvalue);
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}
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/**
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* @param string $byteword
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* @param bool $signed
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*
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* @return int|float|false
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*/
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public static function LittleEndian2Int($byteword, $signed=false) {
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return self::BigEndian2Int(strrev($byteword), false, $signed);
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}
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/**
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* @param string $byteword
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*
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* @return string
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*/
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public static function LittleEndian2Bin($byteword) {
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return self::BigEndian2Bin(strrev($byteword));
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}
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/**
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* @param string $byteword
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*
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* @return string
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*/
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public static function BigEndian2Bin($byteword) {
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$binvalue = '';
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$bytewordlen = strlen($byteword);
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for ($i = 0; $i < $bytewordlen; $i++) {
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$binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT);
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}
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return $binvalue;
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}
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/**
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* @param int $number
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* @param int $minbytes
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* @param bool $synchsafe
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* @param bool $signed
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*
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* @return string
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* @throws Exception
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*/
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public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
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if ($number < 0) {
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throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
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}
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$maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
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$intstring = '';
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if ($signed) {
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if ($minbytes > PHP_INT_SIZE) {
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throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()');
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}
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$number = $number & (0x80 << (8 * ($minbytes - 1)));
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}
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while ($number != 0) {
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$quotient = ($number / ($maskbyte + 1));
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$intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
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$number = floor($quotient);
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}
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return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
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}
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/**
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* @param int $number
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*
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* @return string
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*/
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public static function Dec2Bin($number) {
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while ($number >= 256) {
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$bytes[] = (($number / 256) - (floor($number / 256))) * 256;
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$number = floor($number / 256);
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}
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$bytes[] = $number;
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$binstring = '';
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for ($i = 0; $i < count($bytes); $i++) {
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$binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring;
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}
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return $binstring;
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}
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/**
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* @param string $binstring
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* @param bool $signed
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*
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* @return int|float
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*/
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public static function Bin2Dec($binstring, $signed=false) {
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$signmult = 1;
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if ($signed) {
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if ($binstring[0] == '1') {
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$signmult = -1;
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}
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$binstring = substr($binstring, 1);
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}
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$decvalue = 0;
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for ($i = 0; $i < strlen($binstring); $i++) {
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$decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
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}
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return self::CastAsInt($decvalue * $signmult);
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}
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/**
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* @param string $binstring
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*
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* @return string
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*/
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public static function Bin2String($binstring) {
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// return 'hi' for input of '0110100001101001'
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$string = '';
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$binstringreversed = strrev($binstring);
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for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
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$string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
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}
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return $string;
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}
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/**
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* @param int $number
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* @param int $minbytes
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* @param bool $synchsafe
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*
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* @return string
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*/
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public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
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$intstring = '';
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while ($number > 0) {
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if ($synchsafe) {
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$intstring = $intstring.chr($number & 127);
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$number >>= 7;
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} else {
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$intstring = $intstring.chr($number & 255);
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$number >>= 8;
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}
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}
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return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
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}
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/**
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|
* @param mixed $array1
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* @param mixed $array2
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*
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* @return array|false
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*/
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public static function array_merge_clobber($array1, $array2) {
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|
// written by kcØhireability*com
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|
// taken from http://www.php.net/manual/en/function.array-merge-recursive.php
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|
if (!is_array($array1) || !is_array($array2)) {
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return false;
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}
|
|
$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;
|
|
}
|
|
|
|
/**
|
|
* @param mixed $array1
|
|
* @param mixed $array2
|
|
*
|
|
* @return array|false
|
|
*/
|
|
public static function array_merge_noclobber($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;
|
|
}
|
|
|
|
/**
|
|
* @param mixed $array1
|
|
* @param mixed $array2
|
|
*
|
|
* @return array|false|null
|
|
*/
|
|
public static function flipped_array_merge_noclobber($array1, $array2) {
|
|
if (!is_array($array1) || !is_array($array2)) {
|
|
return false;
|
|
}
|
|
# naturally, this only works non-recursively
|
|
$newarray = array_flip($array1);
|
|
foreach (array_flip($array2) as $key => $val) {
|
|
if (!isset($newarray[$key])) {
|
|
$newarray[$key] = count($newarray);
|
|
}
|
|
}
|
|
return array_flip($newarray);
|
|
}
|
|
|
|
/**
|
|
* @param array $theArray
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function ksort_recursive(&$theArray) {
|
|
ksort($theArray);
|
|
foreach ($theArray as $key => $value) {
|
|
if (is_array($value)) {
|
|
self::ksort_recursive($theArray[$key]);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param string $filename
|
|
* @param int $numextensions
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function fileextension($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 '';
|
|
}
|
|
|
|
/**
|
|
* @param int $seconds
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function PlaytimeString($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);
|
|
}
|
|
|
|
/**
|
|
* @param int $macdate
|
|
*
|
|
* @return int|float
|
|
*/
|
|
public static function DateMac2Unix($macdate) {
|
|
// Macintosh timestamp: seconds since 00:00h January 1, 1904
|
|
// UNIX timestamp: seconds since 00:00h January 1, 1970
|
|
return self::CastAsInt($macdate - 2082844800);
|
|
}
|
|
|
|
/**
|
|
* @param string $rawdata
|
|
*
|
|
* @return float
|
|
*/
|
|
public static function FixedPoint8_8($rawdata) {
|
|
return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
|
|
}
|
|
|
|
/**
|
|
* @param string $rawdata
|
|
*
|
|
* @return float
|
|
*/
|
|
public static function FixedPoint16_16($rawdata) {
|
|
return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
|
|
}
|
|
|
|
/**
|
|
* @param string $rawdata
|
|
*
|
|
* @return float
|
|
*/
|
|
public static function FixedPoint2_30($rawdata) {
|
|
$binarystring = self::BigEndian2Bin($rawdata);
|
|
return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
|
|
}
|
|
|
|
|
|
/**
|
|
* @param string $ArrayPath
|
|
* @param string $Separator
|
|
* @param mixed $Value
|
|
*
|
|
* @return array
|
|
*/
|
|
public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
|
|
// assigns $Value to a nested array path:
|
|
// $foo = self::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';
|
|
$ArrayPath = ltrim($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;
|
|
}
|
|
|
|
/**
|
|
* @param array $arraydata
|
|
* @param bool $returnkey
|
|
*
|
|
* @return int|false
|
|
*/
|
|
public static function array_max($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);
|
|
}
|
|
|
|
/**
|
|
* @param array $arraydata
|
|
* @param bool $returnkey
|
|
*
|
|
* @return int|false
|
|
*/
|
|
public static function array_min($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);
|
|
}
|
|
|
|
/**
|
|
* @param string $XMLstring
|
|
*
|
|
* @return array|false
|
|
*/
|
|
public static function XML2array($XMLstring) {
|
|
if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
|
|
// http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
|
|
// https://core.trac.wordpress.org/changeset/29378
|
|
// This function has been deprecated in PHP 8.0 because in libxml 2.9.0, external entity loading is
|
|
// disabled by default, but is still needed when LIBXML_NOENT is used.
|
|
$loader = @libxml_disable_entity_loader(true);
|
|
$XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT);
|
|
$return = self::SimpleXMLelement2array($XMLobject);
|
|
@libxml_disable_entity_loader($loader);
|
|
return $return;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param SimpleXMLElement|array|mixed $XMLobject
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public static function SimpleXMLelement2array($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;
|
|
}
|
|
|
|
/**
|
|
* Returns checksum for a file from starting position to absolute end position.
|
|
*
|
|
* @param string $file
|
|
* @param int $offset
|
|
* @param int $end
|
|
* @param string $algorithm
|
|
*
|
|
* @return string|false
|
|
* @throws getid3_exception
|
|
*/
|
|
public static function hash_data($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;
|
|
}
|
|
|
|
/**
|
|
* @param string $filename_source
|
|
* @param string $filename_dest
|
|
* @param int $offset
|
|
* @param int $length
|
|
*
|
|
* @return bool
|
|
* @throws Exception
|
|
*
|
|
* @deprecated Unused, may be removed in future versions of getID3
|
|
*/
|
|
public static function CopyFileParts($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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param int $charval
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_int_utf8($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
|
|
*
|
|
* @param string $string
|
|
* @param bool $bom
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_iso88591_utf8($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]);
|
|
$newcharstring .= self::iconv_fallback_int_utf8($charval);
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* ISO-8859-1 => UTF-16BE
|
|
*
|
|
* @param string $string
|
|
* @param bool $bom
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_iso88591_utf16be($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
|
|
*
|
|
* @param string $string
|
|
* @param bool $bom
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_iso88591_utf16le($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)
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_iso88591_utf16($string) {
|
|
return self::iconv_fallback_iso88591_utf16le($string, true);
|
|
}
|
|
|
|
/**
|
|
* UTF-8 => ISO-8859-1
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf8_iso88591($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
|
|
*
|
|
* @param string $string
|
|
* @param bool $bom
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf8_utf16be($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) ? self::BigEndian2String($charval, 2) : "\x00".'?');
|
|
}
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-8 => UTF-16LE
|
|
*
|
|
* @param string $string
|
|
* @param bool $bom
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf8_utf16le($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) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
|
|
}
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-8 => UTF-16LE (BOM)
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf8_utf16($string) {
|
|
return self::iconv_fallback_utf8_utf16le($string, true);
|
|
}
|
|
|
|
/**
|
|
* UTF-16BE => UTF-8
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16be_utf8($string) {
|
|
if (substr($string, 0, 2) == "\xFE\xFF") {
|
|
// strip BOM
|
|
$string = substr($string, 2);
|
|
}
|
|
$newcharstring = '';
|
|
for ($i = 0; $i < strlen($string); $i += 2) {
|
|
$charval = self::BigEndian2Int(substr($string, $i, 2));
|
|
$newcharstring .= self::iconv_fallback_int_utf8($charval);
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-16LE => UTF-8
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16le_utf8($string) {
|
|
if (substr($string, 0, 2) == "\xFF\xFE") {
|
|
// strip BOM
|
|
$string = substr($string, 2);
|
|
}
|
|
$newcharstring = '';
|
|
for ($i = 0; $i < strlen($string); $i += 2) {
|
|
$charval = self::LittleEndian2Int(substr($string, $i, 2));
|
|
$newcharstring .= self::iconv_fallback_int_utf8($charval);
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-16BE => ISO-8859-1
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16be_iso88591($string) {
|
|
if (substr($string, 0, 2) == "\xFE\xFF") {
|
|
// strip BOM
|
|
$string = substr($string, 2);
|
|
}
|
|
$newcharstring = '';
|
|
for ($i = 0; $i < strlen($string); $i += 2) {
|
|
$charval = self::BigEndian2Int(substr($string, $i, 2));
|
|
$newcharstring .= (($charval < 256) ? chr($charval) : '?');
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-16LE => ISO-8859-1
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16le_iso88591($string) {
|
|
if (substr($string, 0, 2) == "\xFF\xFE") {
|
|
// strip BOM
|
|
$string = substr($string, 2);
|
|
}
|
|
$newcharstring = '';
|
|
for ($i = 0; $i < strlen($string); $i += 2) {
|
|
$charval = self::LittleEndian2Int(substr($string, $i, 2));
|
|
$newcharstring .= (($charval < 256) ? chr($charval) : '?');
|
|
}
|
|
return $newcharstring;
|
|
}
|
|
|
|
/**
|
|
* UTF-16 (BOM) => ISO-8859-1
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16_iso88591($string) {
|
|
$bom = substr($string, 0, 2);
|
|
if ($bom == "\xFE\xFF") {
|
|
return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
|
|
} elseif ($bom == "\xFF\xFE") {
|
|
return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
|
|
}
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* UTF-16 (BOM) => UTF-8
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function iconv_fallback_utf16_utf8($string) {
|
|
$bom = substr($string, 0, 2);
|
|
if ($bom == "\xFE\xFF") {
|
|
return self::iconv_fallback_utf16be_utf8(substr($string, 2));
|
|
} elseif ($bom == "\xFF\xFE") {
|
|
return self::iconv_fallback_utf16le_utf8(substr($string, 2));
|
|
}
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* @param string $in_charset
|
|
* @param string $out_charset
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
* @throws Exception
|
|
*/
|
|
public static function iconv_fallback($in_charset, $out_charset, $string) {
|
|
|
|
if ($in_charset == $out_charset) {
|
|
return $string;
|
|
}
|
|
|
|
// mb_convert_encoding() available
|
|
if (function_exists('mb_convert_encoding')) {
|
|
if ((strtoupper($in_charset) == 'UTF-16') && (substr($string, 0, 2) != "\xFE\xFF") && (substr($string, 0, 2) != "\xFF\xFE")) {
|
|
// if BOM missing, mb_convert_encoding will mishandle the conversion, assume UTF-16BE and prepend appropriate BOM
|
|
$string = "\xFF\xFE".$string;
|
|
}
|
|
if ((strtoupper($in_charset) == 'UTF-16') && (strtoupper($out_charset) == 'UTF-8')) {
|
|
if (($string == "\xFF\xFE") || ($string == "\xFE\xFF")) {
|
|
// if string consists of only BOM, mb_convert_encoding will return the BOM unmodified
|
|
return '';
|
|
}
|
|
}
|
|
if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) {
|
|
switch ($out_charset) {
|
|
case 'ISO-8859-1':
|
|
$converted_string = rtrim($converted_string, "\x00");
|
|
break;
|
|
}
|
|
return $converted_string;
|
|
}
|
|
return $string;
|
|
|
|
// iconv() available
|
|
} elseif (function_exists('iconv')) {
|
|
if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
|
|
switch ($out_charset) {
|
|
case 'ISO-8859-1':
|
|
$converted_string = rtrim($converted_string, "\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;
|
|
}
|
|
|
|
|
|
// neither mb_convert_encoding or iconv() is 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($out_charset)];
|
|
return self::$ConversionFunction($string);
|
|
}
|
|
throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
|
|
}
|
|
|
|
/**
|
|
* @param mixed $data
|
|
* @param string $charset
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public static function recursiveMultiByteCharString2HTML($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;
|
|
}
|
|
// integer, float, objects, resources, etc
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* @param string|int|float $string
|
|
* @param string $charset
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
|
|
$string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
|
|
$HTMLstring = '';
|
|
|
|
switch (strtolower($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) == 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) {
|
|
$charval = self::LittleEndian2Int(substr($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;
|
|
}
|
|
|
|
/**
|
|
* @param int $namecode
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function RGADnameLookup($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] : '');
|
|
}
|
|
|
|
/**
|
|
* @param int $originatorcode
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function RGADoriginatorLookup($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] : '');
|
|
}
|
|
|
|
/**
|
|
* @param int $rawadjustment
|
|
* @param int $signbit
|
|
*
|
|
* @return float
|
|
*/
|
|
public static function RGADadjustmentLookup($rawadjustment, $signbit) {
|
|
$adjustment = (float) $rawadjustment / 10;
|
|
if ($signbit == 1) {
|
|
$adjustment *= -1;
|
|
}
|
|
return $adjustment;
|
|
}
|
|
|
|
/**
|
|
* @param int $namecode
|
|
* @param int $originatorcode
|
|
* @param int $replaygain
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function RGADgainString($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;
|
|
}
|
|
|
|
/**
|
|
* @param float $amplitude
|
|
*
|
|
* @return float
|
|
*/
|
|
public static function RGADamplitude2dB($amplitude) {
|
|
return 20 * log10($amplitude);
|
|
}
|
|
|
|
/**
|
|
* @param string $imgData
|
|
* @param array $imageinfo
|
|
*
|
|
* @return array|false
|
|
*/
|
|
public static function GetDataImageSize($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(); // https://github.com/JamesHeinrich/getID3/issues/52
|
|
}
|
|
|
|
// yes this is ugly, feel free to suggest a better way
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* @param string $mime_type
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function ImageExtFromMime($mime_type) {
|
|
// temporary way, works OK for now, but should be reworked in the future
|
|
return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
|
|
}
|
|
|
|
/**
|
|
* @param array $ThisFileInfo
|
|
* @param bool $option_tags_html default true (just as in the main getID3 class)
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function CopyTagsToComments(&$ThisFileInfo, $option_tags_html=true) {
|
|
// Copy all entries from ['tags'] into common ['comments']
|
|
if (!empty($ThisFileInfo['tags'])) {
|
|
if (isset($ThisFileInfo['tags']['id3v1'])) {
|
|
// bubble ID3v1 to the end, if present to aid in detecting bad ID3v1 encodings
|
|
$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])) {
|
|
|
|
// 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;
|
|
}
|
|
}
|
|
if (function_exists('mb_convert_encoding')) {
|
|
if (trim($value) == trim(substr(mb_convert_encoding($existingvalue, $ThisFileInfo['id3v1']['encoding'], $ThisFileInfo['encoding']), 0, 30))) {
|
|
// value stored in ID3v1 appears to be probably the multibyte value transliterated (badly) into ISO-8859-1 in ID3v1.
|
|
// As an example, Foobar2000 will do this if you tag a file with Chinese or Arabic or Cyrillic or something that doesn't fit into ISO-8859-1 the ID3v1 will consist of mostly "?" characters, one per multibyte unrepresentable character
|
|
break 2;
|
|
}
|
|
}
|
|
|
|
} elseif (!is_array($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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// attempt to standardize spelling of returned keys
|
|
$StandardizeFieldNames = array(
|
|
'tracknumber' => 'track_number',
|
|
'track' => 'track_number',
|
|
);
|
|
foreach ($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 ($option_tags_html) {
|
|
// Copy ['comments'] to ['comments_html']
|
|
if (!empty($ThisFileInfo['comments'])) {
|
|
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][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param string $key
|
|
* @param int $begin
|
|
* @param int $end
|
|
* @param string $file
|
|
* @param string $name
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function EmbeddedLookup($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] : '');
|
|
}
|
|
|
|
/**
|
|
* @param string $filename
|
|
* @param string $sourcefile
|
|
* @param bool $DieOnFailure
|
|
*
|
|
* @return bool
|
|
* @throws Exception
|
|
*/
|
|
public static function IncludeDependency($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;
|
|
}
|
|
|
|
/**
|
|
* @param string $string
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function trimNullByte($string) {
|
|
return trim($string, "\x00");
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
*
|
|
* @return float|bool
|
|
*/
|
|
public static function getFileSizeSyscall($path) {
|
|
$filesize = false;
|
|
|
|
if (GETID3_OS_ISWINDOWS) {
|
|
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:
|
|
$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;
|
|
}
|
|
|
|
/**
|
|
* @param string $filename
|
|
*
|
|
* @return string|false
|
|
*/
|
|
public static function truepath($filename) {
|
|
// 2017-11-08: this could use some improvement, patches welcome
|
|
if (preg_match('#^(\\\\\\\\|//)[a-z0-9]#i', $filename, $matches)) {
|
|
// PHP's built-in realpath function does not work on UNC Windows shares
|
|
$goodpath = array();
|
|
foreach (explode('/', str_replace('\\', '/', $filename)) as $part) {
|
|
if ($part == '.') {
|
|
continue;
|
|
}
|
|
if ($part == '..') {
|
|
if (count($goodpath)) {
|
|
array_pop($goodpath);
|
|
} else {
|
|
// cannot step above this level, already at top level
|
|
return false;
|
|
}
|
|
} else {
|
|
$goodpath[] = $part;
|
|
}
|
|
}
|
|
return implode(DIRECTORY_SEPARATOR, $goodpath);
|
|
}
|
|
return realpath($filename);
|
|
}
|
|
|
|
/**
|
|
* Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268)
|
|
*
|
|
* @param string $path A path.
|
|
* @param string $suffix If the name component ends in suffix this will also be cut off.
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function mb_basename($path, $suffix = null) {
|
|
$splited = preg_split('#/#', rtrim($path, '/ '));
|
|
return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1);
|
|
}
|
|
|
|
}
|