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<?php namespace Bitrix\Main\Text; use Bitrix\Main\Application; use Bitrix\Main\Config\Configuration; class Encoding { /** * Converts data from a source encoding to a target encoding. * * @param string\|array\|\SplFixedArray $data The data to convert. From main 16.0.10 data can be an array. * @param string $charsetFrom The source encoding. * @param string $charsetTo The target encoding. * @return string\|array\|\SplFixedArray\|bool Returns converted data or false on error. / public static function convertEncoding($data, $charsetFrom, $charsetTo) { $charsetFrom = static::resolveAlias($charsetFrom); $charsetTo = static::resolveAlias($charsetTo); if ((string)$charsetFrom == '' \|\| (string)$charsetTo == '') { // incorrect encoding return $data; } if (strcasecmp($charsetFrom, $charsetTo) == 0) { // no need to convert return $data; } // mb_encoding_aliases emits an E_WARNING level error if encoding is unknown if (@mb_encoding_aliases($charsetFrom) === false \|\| @mb_encoding_aliases($charsetTo) === false) { // unknown encoding return $data; } return self::convert($data, $charsetFrom, $charsetTo); } protected static function resolveAlias($alias) { static $map = array( 'csksc56011987' => 'euc-kr', 'ks_c_5601-1987' => 'euc-kr', 'ks_c_5601-1989' => 'euc-kr', 'ksc5601' => 'euc-kr', 'ksc_5601' => 'euc-kr', 'windows-1257' => 'ISO-8859-13', ); if(is_string($alias)) { $alias = strtolower(trim($alias)); if(isset($map[$alias])) { return $map[$alias]; } } return $alias; } protected static function convert(&$data, $charsetFrom, $charsetTo) { if(is_array($data) \|\| $data instanceof \SplFixedArray) { //let's do a recursion foreach($data as $key => $value) { $newKey = self::convert($key, $charsetFrom, $charsetTo); $newValue = self::convert($value, $charsetFrom, $charsetTo); $data[$newKey] = $newValue; if($newKey != $key) { unset($data[$key]); } } return $data; } elseif(is_string($data)) { if($data == '') { return ''; } return static::convertByMbstring($data, $charsetFrom, $charsetTo); } return $data; } /* * @deprecated Deprecated in main 16.0.10. Use Encoding::convertEncoding(). * @param $data * @param $charsetFrom * @param $charsetTo * @return mixed / public static function convertEncodingArray($data, $charsetFrom, $charsetTo) { return self::convertEncoding($data, $charsetFrom, $charsetTo); } /* * @param string $string * @return bool\|string / public static function convertEncodingToCurrent($string) { $isUtf8String = self::detectUtf8($string); $isUtf8Config = Application::isUtfMode(); $currentCharset = null; if (!$isUtf8Config && $isUtf8String) { $context = Application::getInstance()->getContext(); if ($context != null) { $culture = $context->getCulture(); if ($culture != null) { $currentCharset = $culture->getCharset(); } } } if ($currentCharset == null) { $currentCharset = Configuration::getValue("default_charset"); } if ($currentCharset == null) { $currentCharset = "Windows-1251"; } $fromCp = ""; $toCp = ""; if ($isUtf8Config && !$isUtf8String) { $fromCp = $currentCharset; $toCp = "UTF-8"; } elseif (!$isUtf8Config && $isUtf8String) { $fromCp = "UTF-8"; $toCp = $currentCharset; } if ($fromCp !== $toCp) { $string = self::convertEncoding($string, $fromCp, $toCp); } return $string; } /* * @param string $string * @return bool / public static function detectUtf8($string) { //http://mail.nl.linux.org/linux-utf8/1999-09/msg00110.html $string = preg_replace_callback("/(%)([0-9A-F]{2})/i", function ($match) { return chr(hexdec($match[2])); }, $string); //valid UTF-8 octet sequences //0xxxxxxx //110xxxxx 10xxxxxx //1110xxxx 10xxxxxx 10xxxxxx //11110xxx 10xxxxxx 10xxxxxx 10xxxxxx $prevBits8and7 = 0; $isUtf = 0; foreach(unpack("C", $string) as $byte) { $hiBits8and7 = $byte & 0xC0; if ($hiBits8and7 == 0x80) { if ($prevBits8and7 == 0xC0) $isUtf++; elseif (($prevBits8and7 & 0x80) == 0x00) $isUtf--; } elseif ($prevBits8and7 == 0xC0) { $isUtf--; } $prevBits8and7 = $hiBits8and7; } return ($isUtf > 0); } protected static function convertByMbstring($data, $charsetFrom, $charsetTo) { //For UTF-16 we have to detect the order of bytes //Default for mbstring extension is Big endian //Little endian have to pointed explicitly if (strtoupper($charsetFrom) == "UTF-16") { $ch = substr($data, 0, 1); if ($ch == "\xFF" && substr($data, 1, 1) == "\xFE") { //If Little endian found - cutoff BOF bytes and point mbstring to this fact explicitly $res = mb_convert_encoding(substr($data, 2), $charsetTo, "UTF-16LE"); } elseif ($ch == "\xFE" && substr($data, 1, 1) == "\xFF") { //If it is Big endian, just remove BOF bytes $res = mb_convert_encoding(substr($data, 2), $charsetTo, $charsetFrom); } else { //Otherwise assime Little endian without BOF $res = mb_convert_encoding($data, $charsetTo, "UTF-16LE"); } } else { $res = mb_convert_encoding($data, $charsetTo, $charsetFrom); } return $res; } }

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