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Edit File : Iconv.php \| Size : 22.09 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Polyfill\Iconv; /* * iconv implementation in pure PHP, UTF-8 centric. * * Implemented: * - iconv - Convert string to requested character encoding * - iconv_mime_decode - Decodes a MIME header field * - iconv_mime_decode_headers - Decodes multiple MIME header fields at once * - iconv_get_encoding - Retrieve internal configuration variables of iconv extension * - iconv_set_encoding - Set current setting for character encoding conversion * - iconv_mime_encode - Composes a MIME header field * - iconv_strlen - Returns the character count of string * - iconv_strpos - Finds position of first occurrence of a needle within a haystack * - iconv_strrpos - Finds the last occurrence of a needle within a haystack * - iconv_substr - Cut out part of a string * * Charsets available for conversion are defined by files * in the charset/ directory and by Iconv::$alias below. * You're welcome to send back any addition you make. * * @author Nicolas Grekas <p@tchwork.com> * * @internal / final class Iconv { public const ERROR_ILLEGAL_CHARACTER = 'iconv(): Detected an illegal character in input string'; public const ERROR_WRONG_CHARSET = 'iconv(): Wrong charset, conversion from `%s\' to `%s\' is not allowed'; public static $inputEncoding = 'utf-8'; public static $outputEncoding = 'utf-8'; public static $internalEncoding = 'utf-8'; private static $alias = [ 'utf8' => 'utf-8', 'ascii' => 'us-ascii', 'tis-620' => 'iso-8859-11', 'cp1250' => 'windows-1250', 'cp1251' => 'windows-1251', 'cp1252' => 'windows-1252', 'cp1253' => 'windows-1253', 'cp1254' => 'windows-1254', 'cp1255' => 'windows-1255', 'cp1256' => 'windows-1256', 'cp1257' => 'windows-1257', 'cp1258' => 'windows-1258', 'shift-jis' => 'cp932', 'shift_jis' => 'cp932', 'latin1' => 'iso-8859-1', 'latin2' => 'iso-8859-2', 'latin3' => 'iso-8859-3', 'latin4' => 'iso-8859-4', 'latin5' => 'iso-8859-9', 'latin6' => 'iso-8859-10', 'latin7' => 'iso-8859-13', 'latin8' => 'iso-8859-14', 'latin9' => 'iso-8859-15', 'latin10' => 'iso-8859-16', 'iso8859-1' => 'iso-8859-1', 'iso8859-2' => 'iso-8859-2', 'iso8859-3' => 'iso-8859-3', 'iso8859-4' => 'iso-8859-4', 'iso8859-5' => 'iso-8859-5', 'iso8859-6' => 'iso-8859-6', 'iso8859-7' => 'iso-8859-7', 'iso8859-8' => 'iso-8859-8', 'iso8859-9' => 'iso-8859-9', 'iso8859-10' => 'iso-8859-10', 'iso8859-11' => 'iso-8859-11', 'iso8859-12' => 'iso-8859-12', 'iso8859-13' => 'iso-8859-13', 'iso8859-14' => 'iso-8859-14', 'iso8859-15' => 'iso-8859-15', 'iso8859-16' => 'iso-8859-16', 'iso_8859-1' => 'iso-8859-1', 'iso_8859-2' => 'iso-8859-2', 'iso_8859-3' => 'iso-8859-3', 'iso_8859-4' => 'iso-8859-4', 'iso_8859-5' => 'iso-8859-5', 'iso_8859-6' => 'iso-8859-6', 'iso_8859-7' => 'iso-8859-7', 'iso_8859-8' => 'iso-8859-8', 'iso_8859-9' => 'iso-8859-9', 'iso_8859-10' => 'iso-8859-10', 'iso_8859-11' => 'iso-8859-11', 'iso_8859-12' => 'iso-8859-12', 'iso_8859-13' => 'iso-8859-13', 'iso_8859-14' => 'iso-8859-14', 'iso_8859-15' => 'iso-8859-15', 'iso_8859-16' => 'iso-8859-16', 'iso88591' => 'iso-8859-1', 'iso88592' => 'iso-8859-2', 'iso88593' => 'iso-8859-3', 'iso88594' => 'iso-8859-4', 'iso88595' => 'iso-8859-5', 'iso88596' => 'iso-8859-6', 'iso88597' => 'iso-8859-7', 'iso88598' => 'iso-8859-8', 'iso88599' => 'iso-8859-9', 'iso885910' => 'iso-8859-10', 'iso885911' => 'iso-8859-11', 'iso885912' => 'iso-8859-12', 'iso885913' => 'iso-8859-13', 'iso885914' => 'iso-8859-14', 'iso885915' => 'iso-8859-15', 'iso885916' => 'iso-8859-16', ]; private static $translitMap = []; private static $convertMap = []; private static $errorHandler; private static $lastError; private static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4]; private static $isValidUtf8; public static function iconv($inCharset, $outCharset, $str) { $str = (string) $str; if ('' === $str) { return ''; } // Prepare for //IGNORE and //TRANSLIT $translit = $ignore = ''; $outCharset = strtolower($outCharset); $inCharset = strtolower($inCharset); if ('' === $outCharset) { $outCharset = 'iso-8859-1'; } if ('' === $inCharset) { $inCharset = 'iso-8859-1'; } do { $loop = false; if ('//translit' === substr($outCharset, -10)) { $loop = $translit = true; $outCharset = substr($outCharset, 0, -10); } if ('//ignore' === substr($outCharset, -8)) { $loop = $ignore = true; $outCharset = substr($outCharset, 0, -8); } } while ($loop); do { $loop = false; if ('//translit' === substr($inCharset, -10)) { $loop = true; $inCharset = substr($inCharset, 0, -10); } if ('//ignore' === substr($inCharset, -8)) { $loop = true; $inCharset = substr($inCharset, 0, -8); } } while ($loop); if (isset(self::$alias[$inCharset])) { $inCharset = self::$alias[$inCharset]; } if (isset(self::$alias[$outCharset])) { $outCharset = self::$alias[$outCharset]; } // Load charset maps if (('utf-8' !== $inCharset && !self::loadMap('from.', $inCharset, $inMap)) \|\| ('utf-8' !== $outCharset && !self::loadMap('to.', $outCharset, $outMap))) { trigger_error(sprintf(self::ERROR_WRONG_CHARSET, $inCharset, $outCharset)); return false; } if ('utf-8' !== $inCharset) { // Convert input to UTF-8 $result = ''; if (self::mapToUtf8($result, $inMap, $str, $ignore)) { $str = $result; } else { $str = false; } self::$isValidUtf8 = true; } else { self::$isValidUtf8 = preg_match('//u', $str); if (!self::$isValidUtf8 && !$ignore) { trigger_error(self::ERROR_ILLEGAL_CHARACTER); return false; } if ('utf-8' === $outCharset) { // UTF-8 validation $str = self::utf8ToUtf8($str, $ignore); } } if ('utf-8' !== $outCharset && false !== $str) { // Convert output to UTF-8 $result = ''; if (self::mapFromUtf8($result, $outMap, $str, $ignore, $translit)) { return $result; } return false; } return $str; } public static function iconv_mime_decode_headers($str, $mode = 0, $charset = null) { if (null === $charset) { $charset = self::$internalEncoding; } if (false !== strpos($str, "\r")) { $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n"); } $str = explode("\n\n", $str, 2); $headers = []; $str = preg_split('/\n(?![ \t])/', $str[0]); foreach ($str as $str) { $str = self::iconv_mime_decode($str, $mode, $charset); if (false === $str) { return false; } $str = explode(':', $str, 2); if (2 === \count($str)) { if (isset($headers[$str[0]])) { if (!\is_array($headers[$str[0]])) { $headers[$str[0]] = [$headers[$str[0]]]; } $headers[$str[0]][] = ltrim($str[1]); } else { $headers[$str[0]] = ltrim($str[1]); } } } return $headers; } public static function iconv_mime_decode($str, $mode = 0, $charset = null) { if (null === $charset) { $charset = self::$internalEncoding; } if (\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) { $charset .= '//IGNORE'; } if (false !== strpos($str, "\r")) { $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n"); } $str = preg_split('/\n(?![ \t])/', rtrim($str), 2); $str = preg_replace('/[ \t]\n[ \t]+/', ' ', rtrim($str[0])); $str = preg_split('/=\?([^?]+)\?([bqBQ])\?(.*?)\?=/', $str, -1, \PREG_SPLIT_DELIM_CAPTURE); $result = self::iconv('utf-8', $charset, $str[0]); if (false === $result) { return false; } $i = 1; $len = \count($str); while ($i < $len) { $c = strtolower($str[$i]); if ((\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) && 'utf-8' !== $c && !isset(self::$alias[$c]) && !self::loadMap('from.', $c, $d)) { $d = false; } elseif ('B' === strtoupper($str[$i + 1])) { $d = base64_decode($str[$i + 2]); } else { $d = rawurldecode(strtr(str_replace('%', '%25', $str[$i + 2]), '=_', '% ')); } if (false !== $d) { if ('' !== $d) { if ('' === $d = self::iconv($c, $charset, $d)) { $str[$i + 3] = substr($str[$i + 3], 1); } else { $result .= $d; } } $d = self::iconv('utf-8', $charset, $str[$i + 3]); if ('' !== trim($d)) { $result .= $d; } } elseif (\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) { $result .= "=?{$str[$i]}?{$str[$i + 1]}?{$str[$i + 2]}?={$str[$i + 3]}"; } else { $result = false; break; } $i += 4; } return $result; } public static function iconv_get_encoding($type = 'all') { switch ($type) { case 'input_encoding': return self::$inputEncoding; case 'output_encoding': return self::$outputEncoding; case 'internal_encoding': return self::$internalEncoding; } return [ 'input_encoding' => self::$inputEncoding, 'output_encoding' => self::$outputEncoding, 'internal_encoding' => self::$internalEncoding, ]; } public static function iconv_set_encoding($type, $charset) { switch ($type) { case 'input_encoding': self::$inputEncoding = $charset; break; case 'output_encoding': self::$outputEncoding = $charset; break; case 'internal_encoding': self::$internalEncoding = $charset; break; default: return false; } return true; } public static function iconv_mime_encode($fieldName, $fieldValue, $pref = null) { if (!\is_array($pref)) { $pref = []; } $pref += [ 'scheme' => 'B', 'input-charset' => self::$internalEncoding, 'output-charset' => self::$internalEncoding, 'line-length' => 76, 'line-break-chars' => "\r\n", ]; if (preg_match('/[\x80-\xFF]/', $fieldName)) { $fieldName = ''; } $scheme = strtoupper(substr($pref['scheme'], 0, 1)); $in = strtolower($pref['input-charset']); $out = strtolower($pref['output-charset']); if ('utf-8' !== $in && false === $fieldValue = self::iconv($in, 'utf-8', $fieldValue)) { return false; } preg_match_all('/./us', $fieldValue, $chars); $chars = $chars[0] ?? []; $lineBreak = (int) $pref['line-length']; $lineStart = "=?{$pref['output-charset']}?{$scheme}?"; $lineLength = \strlen($fieldName) + 2 + \strlen($lineStart) + 2; $lineOffset = \strlen($lineStart) + 3; $lineData = ''; $fieldValue = []; $Q = 'Q' === $scheme; foreach ($chars as $c) { if ('utf-8' !== $out && false === $c = self::iconv('utf-8', $out, $c)) { return false; } $o = $Q ? $c = preg_replace_callback( '/[=_\?\x00-\x1F\x80-\xFF]/', [__CLASS__, 'qpByteCallback'], $c ) : base64_encode($lineData.$c); if (isset($o[$lineBreak - $lineLength])) { if (!$Q) { $lineData = base64_encode($lineData); } $fieldValue[] = $lineStart.$lineData.'?='; $lineLength = $lineOffset; $lineData = ''; } $lineData .= $c; $Q && $lineLength += \strlen($c); } if ('' !== $lineData) { if (!$Q) { $lineData = base64_encode($lineData); } $fieldValue[] = $lineStart.$lineData.'?='; } return $fieldName.': '.implode($pref['line-break-chars'].' ', $fieldValue); } public static function iconv_strlen($s, $encoding = null) { static $hasXml = null; if (null === $hasXml) { $hasXml = \extension_loaded('xml'); } if ($hasXml) { return self::strlen1($s, $encoding); } return self::strlen2($s, $encoding); } public static function strlen1($s, $encoding = null) { if (null === $encoding) { $encoding = self::$internalEncoding; } if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) { return false; } return \strlen(utf8_decode($s)); } public static function strlen2($s, $encoding = null) { if (null === $encoding) { $encoding = self::$internalEncoding; } if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) { return false; } $ulenMask = self::$ulenMask; $i = 0; $j = 0; $len = \strlen($s); while ($i < $len) { $u = $s[$i] & "\xF0"; $i += $ulenMask[$u] ?? 1; ++$j; } return $j; } public static function iconv_strpos($haystack, $needle, $offset = 0, $encoding = null) { if (null === $encoding) { $encoding = self::$internalEncoding; } if (0 !== stripos($encoding, 'utf-8')) { if (false === $haystack = self::iconv($encoding, 'utf-8', $haystack)) { return false; } if (false === $needle = self::iconv($encoding, 'utf-8', $needle)) { return false; } } if ($offset = (int) $offset) { $haystack = self::iconv_substr($haystack, $offset, 2147483647, 'utf-8'); } $pos = strpos($haystack, $needle); return false === $pos ? false : ($offset + ($pos ? self::iconv_strlen(substr($haystack, 0, $pos), 'utf-8') : 0)); } public static function iconv_strrpos($haystack, $needle, $encoding = null) { if (null === $encoding) { $encoding = self::$internalEncoding; } if (0 !== stripos($encoding, 'utf-8')) { if (false === $haystack = self::iconv($encoding, 'utf-8', $haystack)) { return false; } if (false === $needle = self::iconv($encoding, 'utf-8', $needle)) { return false; } } $pos = isset($needle[0]) ? strrpos($haystack, $needle) : false; return false === $pos ? false : self::iconv_strlen($pos ? substr($haystack, 0, $pos) : $haystack, 'utf-8'); } public static function iconv_substr($s, $start, $length = 2147483647, $encoding = null) { if (null === $encoding) { $encoding = self::$internalEncoding; } if (0 !== stripos($encoding, 'utf-8')) { $encoding = null; } elseif (false === $s = self::iconv($encoding, 'utf-8', $s)) { return false; } $s = (string) $s; $slen = self::iconv_strlen($s, 'utf-8'); $start = (int) $start; if (0 > $start) { $start += $slen; } if (0 > $start) { if (\PHP_VERSION_ID < 80000) { return false; } $start = 0; } if ($start >= $slen) { return \PHP_VERSION_ID >= 80000 ? '' : false; } $rx = $slen - $start; if (0 > $length) { $length += $rx; } if (0 === $length) { return ''; } if (0 > $length) { return \PHP_VERSION_ID >= 80000 ? '' : false; } if ($length > $rx) { $length = $rx; } $rx = '/^'.($start ? self::pregOffset($start) : '').'('.self::pregOffset($length).')/u'; $s = preg_match($rx, $s, $s) ? $s[1] : ''; if (null === $encoding) { return $s; } return self::iconv('utf-8', $encoding, $s); } private static function loadMap($type, $charset, &$map) { if (!isset(self::$convertMap[$type.$charset])) { if (false === $map = self::getData($type.$charset)) { if ('to.' === $type && self::loadMap('from.', $charset, $map)) { $map = array_flip($map); } else { return false; } } self::$convertMap[$type.$charset] = $map; } else { $map = self::$convertMap[$type.$charset]; } return true; } private static function utf8ToUtf8($str, $ignore) { $ulenMask = self::$ulenMask; $valid = self::$isValidUtf8; $u = $str; $i = $j = 0; $len = \strlen($str); while ($i < $len) { if ($str[$i] < "\x80") { $u[$j++] = $str[$i++]; } else { $ulen = $str[$i] & "\xF0"; $ulen = $ulenMask[$ulen] ?? 1; $uchr = substr($str, $i, $ulen); if (1 === $ulen \|\| !($valid \|\| preg_match('/^.$/us', $uchr))) { if ($ignore) { ++$i; continue; } trigger_error(self::ERROR_ILLEGAL_CHARACTER); return false; } $i += $ulen; $u[$j++] = $uchr[0]; isset($uchr[1]) && 0 !== ($u[$j++] = $uchr[1]) && isset($uchr[2]) && 0 !== ($u[$j++] = $uchr[2]) && isset($uchr[3]) && 0 !== ($u[$j++] = $uchr[3]); } } return substr($u, 0, $j); } private static function mapToUtf8(&$result, array $map, $str, $ignore) { $len = \strlen($str); for ($i = 0; $i < $len; ++$i) { if (isset($str[$i + 1], $map[$str[$i].$str[$i + 1]])) { $result .= $map[$str[$i].$str[++$i]]; } elseif (isset($map[$str[$i]])) { $result .= $map[$str[$i]]; } elseif (!$ignore) { trigger_error(self::ERROR_ILLEGAL_CHARACTER); return false; } } return true; } private static function mapFromUtf8(&$result, array $map, $str, $ignore, $translit) { $ulenMask = self::$ulenMask; $valid = self::$isValidUtf8; if ($translit && !self::$translitMap) { self::$translitMap = self::getData('translit'); } $i = 0; $len = \strlen($str); while ($i < $len) { if ($str[$i] < "\x80") { $uchr = $str[$i++]; } else { $ulen = $str[$i] & "\xF0"; $ulen = $ulenMask[$ulen] ?? 1; $uchr = substr($str, $i, $ulen); if ($ignore && (1 === $ulen \|\| !($valid \|\| preg_match('/^.$/us', $uchr)))) { ++$i; continue; } $i += $ulen; } if (isset($map[$uchr])) { $result .= $map[$uchr]; } elseif ($translit) { if (isset(self::$translitMap[$uchr])) { $uchr = self::$translitMap[$uchr]; } elseif ($uchr >= "\xC3\x80") { $uchr = \Normalizer::normalize($uchr, \Normalizer::NFD); if ($uchr[0] < "\x80") { $uchr = $uchr[0]; } elseif ($ignore) { continue; } else { return false; } } elseif ($ignore) { continue; } else { return false; } $str = $uchr.substr($str, $i); $len = \strlen($str); $i = 0; } elseif (!$ignore) { return false; } } return true; } private static function qpByteCallback(array $m) { return '='.strtoupper(dechex(\ord($m[0]))); } private static function pregOffset($offset) { $rx = []; $offset = (int) $offset; while ($offset > 65535) { $rx[] = '.{65535}'; $offset -= 65535; } return implode('', $rx).'.{'.$offset.'}'; } private static function getData($file) { if (file_exists($file = __DIR__.'/Resources/charset/'.$file.'.php')) { return require $file; } return false; } } Back

Edit File : Iconv.php | Size : 22.09 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Polyfill\Iconv;

/**
 * iconv implementation in pure PHP, UTF-8 centric.
 *
 * Implemented:
 * - iconv              - Convert string to requested character encoding
 * - iconv_mime_decode  - Decodes a MIME header field
 * - iconv_mime_decode_headers - Decodes multiple MIME header fields at once
 * - iconv_get_encoding - Retrieve internal configuration variables of iconv extension
 * - iconv_set_encoding - Set current setting for character encoding conversion
 * - iconv_mime_encode  - Composes a MIME header field
 * - iconv_strlen       - Returns the character count of string
 * - iconv_strpos       - Finds position of first occurrence of a needle within a haystack
 * - iconv_strrpos      - Finds the last occurrence of a needle within a haystack
 * - iconv_substr       - Cut out part of a string
 *
 * Charsets available for conversion are defined by files
 * in the charset/ directory and by Iconv::$alias below.
 * You're welcome to send back any addition you make.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @internal
 */
final class Iconv
{
    public const ERROR_ILLEGAL_CHARACTER = 'iconv(): Detected an illegal character in input string';
    public const ERROR_WRONG_CHARSET = 'iconv(): Wrong charset, conversion from `%s\' to `%s\' is not allowed';

public static $inputEncoding = 'utf-8';
    public static $outputEncoding = 'utf-8';
    public static $internalEncoding = 'utf-8';

private static $alias = [
        'utf8' => 'utf-8',
        'ascii' => 'us-ascii',
        'tis-620' => 'iso-8859-11',
        'cp1250' => 'windows-1250',
        'cp1251' => 'windows-1251',
        'cp1252' => 'windows-1252',
        'cp1253' => 'windows-1253',
        'cp1254' => 'windows-1254',
        'cp1255' => 'windows-1255',
        'cp1256' => 'windows-1256',
        'cp1257' => 'windows-1257',
        'cp1258' => 'windows-1258',
        'shift-jis' => 'cp932',
        'shift_jis' => 'cp932',
        'latin1' => 'iso-8859-1',
        'latin2' => 'iso-8859-2',
        'latin3' => 'iso-8859-3',
        'latin4' => 'iso-8859-4',
        'latin5' => 'iso-8859-9',
        'latin6' => 'iso-8859-10',
        'latin7' => 'iso-8859-13',
        'latin8' => 'iso-8859-14',
        'latin9' => 'iso-8859-15',
        'latin10' => 'iso-8859-16',
        'iso8859-1' => 'iso-8859-1',
        'iso8859-2' => 'iso-8859-2',
        'iso8859-3' => 'iso-8859-3',
        'iso8859-4' => 'iso-8859-4',
        'iso8859-5' => 'iso-8859-5',
        'iso8859-6' => 'iso-8859-6',
        'iso8859-7' => 'iso-8859-7',
        'iso8859-8' => 'iso-8859-8',
        'iso8859-9' => 'iso-8859-9',
        'iso8859-10' => 'iso-8859-10',
        'iso8859-11' => 'iso-8859-11',
        'iso8859-12' => 'iso-8859-12',
        'iso8859-13' => 'iso-8859-13',
        'iso8859-14' => 'iso-8859-14',
        'iso8859-15' => 'iso-8859-15',
        'iso8859-16' => 'iso-8859-16',
        'iso_8859-1' => 'iso-8859-1',
        'iso_8859-2' => 'iso-8859-2',
        'iso_8859-3' => 'iso-8859-3',
        'iso_8859-4' => 'iso-8859-4',
        'iso_8859-5' => 'iso-8859-5',
        'iso_8859-6' => 'iso-8859-6',
        'iso_8859-7' => 'iso-8859-7',
        'iso_8859-8' => 'iso-8859-8',
        'iso_8859-9' => 'iso-8859-9',
        'iso_8859-10' => 'iso-8859-10',
        'iso_8859-11' => 'iso-8859-11',
        'iso_8859-12' => 'iso-8859-12',
        'iso_8859-13' => 'iso-8859-13',
        'iso_8859-14' => 'iso-8859-14',
        'iso_8859-15' => 'iso-8859-15',
        'iso_8859-16' => 'iso-8859-16',
        'iso88591' => 'iso-8859-1',
        'iso88592' => 'iso-8859-2',
        'iso88593' => 'iso-8859-3',
        'iso88594' => 'iso-8859-4',
        'iso88595' => 'iso-8859-5',
        'iso88596' => 'iso-8859-6',
        'iso88597' => 'iso-8859-7',
        'iso88598' => 'iso-8859-8',
        'iso88599' => 'iso-8859-9',
        'iso885910' => 'iso-8859-10',
        'iso885911' => 'iso-8859-11',
        'iso885912' => 'iso-8859-12',
        'iso885913' => 'iso-8859-13',
        'iso885914' => 'iso-8859-14',
        'iso885915' => 'iso-8859-15',
        'iso885916' => 'iso-8859-16',
    ];
    private static $translitMap = [];
    private static $convertMap = [];
    private static $errorHandler;
    private static $lastError;

private static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
    private static $isValidUtf8;

public static function iconv($inCharset, $outCharset, $str)
    {
        $str = (string) $str;
        if ('' === $str) {
            return '';
        }

// Prepare for //IGNORE and //TRANSLIT

$translit = $ignore = '';

$outCharset = strtolower($outCharset);
        $inCharset = strtolower($inCharset);

if ('' === $outCharset) {
            $outCharset = 'iso-8859-1';
        }
        if ('' === $inCharset) {
            $inCharset = 'iso-8859-1';
        }

do {
            $loop = false;

if ('//translit' === substr($outCharset, -10)) {
                $loop = $translit = true;
                $outCharset = substr($outCharset, 0, -10);
            }

if ('//ignore' === substr($outCharset, -8)) {
                $loop = $ignore = true;
                $outCharset = substr($outCharset, 0, -8);
            }
        } while ($loop);

do {
            $loop = false;

if ('//translit' === substr($inCharset, -10)) {
                $loop = true;
                $inCharset = substr($inCharset, 0, -10);
            }

if ('//ignore' === substr($inCharset, -8)) {
                $loop = true;
                $inCharset = substr($inCharset, 0, -8);
            }
        } while ($loop);

if (isset(self::$alias[$inCharset])) {
            $inCharset = self::$alias[$inCharset];
        }
        if (isset(self::$alias[$outCharset])) {
            $outCharset = self::$alias[$outCharset];
        }

// Load charset maps

if (('utf-8' !== $inCharset && !self::loadMap('from.', $inCharset, $inMap))
          || ('utf-8' !== $outCharset && !self::loadMap('to.', $outCharset, $outMap))) {
            trigger_error(sprintf(self::ERROR_WRONG_CHARSET, $inCharset, $outCharset));

return false;
        }

if ('utf-8' !== $inCharset) {
            // Convert input to UTF-8
            $result = '';
            if (self::mapToUtf8($result, $inMap, $str, $ignore)) {
                $str = $result;
            } else {
                $str = false;
            }
            self::$isValidUtf8 = true;
        } else {
            self::$isValidUtf8 = preg_match('//u', $str);

if (!self::$isValidUtf8 && !$ignore) {
                trigger_error(self::ERROR_ILLEGAL_CHARACTER);

return false;
            }

if ('utf-8' === $outCharset) {
                // UTF-8 validation
                $str = self::utf8ToUtf8($str, $ignore);
            }
        }

if ('utf-8' !== $outCharset && false !== $str) {
            // Convert output to UTF-8
            $result = '';
            if (self::mapFromUtf8($result, $outMap, $str, $ignore, $translit)) {
                return $result;
            }

return false;
        }

return $str;
    }

public static function iconv_mime_decode_headers($str, $mode = 0, $charset = null)
    {
        if (null === $charset) {
            $charset = self::$internalEncoding;
        }

if (false !== strpos($str, "\r")) {
            $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n");
        }
        $str = explode("\n\n", $str, 2);

$headers = [];

$str = preg_split('/\n(?![ \t])/', $str[0]);
        foreach ($str as $str) {
            $str = self::iconv_mime_decode($str, $mode, $charset);
            if (false === $str) {
                return false;
            }
            $str = explode(':', $str, 2);

if (2 === \count($str)) {
                if (isset($headers[$str[0]])) {
                    if (!\is_array($headers[$str[0]])) {
                        $headers[$str[0]] = [$headers[$str[0]]];
                    }
                    $headers[$str[0]][] = ltrim($str[1]);
                } else {
                    $headers[$str[0]] = ltrim($str[1]);
                }
            }
        }

return $headers;
    }

public static function iconv_mime_decode($str, $mode = 0, $charset = null)
    {
        if (null === $charset) {
            $charset = self::$internalEncoding;
        }
        if (\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) {
            $charset .= '//IGNORE';
        }

if (false !== strpos($str, "\r")) {
            $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n");
        }
        $str = preg_split('/\n(?![ \t])/', rtrim($str), 2);
        $str = preg_replace('/[ \t]*\n[ \t]+/', ' ', rtrim($str[0]));
        $str = preg_split('/=\?([^?]+)\?([bqBQ])\?(.*?)\?=/', $str, -1, \PREG_SPLIT_DELIM_CAPTURE);

$result = self::iconv('utf-8', $charset, $str[0]);
        if (false === $result) {
            return false;
        }

$i = 1;
        $len = \count($str);

while ($i < $len) {
            $c = strtolower($str[$i]);
            if ((\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode)
              && 'utf-8' !== $c
              && !isset(self::$alias[$c])
              && !self::loadMap('from.', $c, $d)) {
                $d = false;
            } elseif ('B' === strtoupper($str[$i + 1])) {
                $d = base64_decode($str[$i + 2]);
            } else {
                $d = rawurldecode(strtr(str_replace('%', '%25', $str[$i + 2]), '=_', '% '));
            }

if (false !== $d) {
                if ('' !== $d) {
                    if ('' === $d = self::iconv($c, $charset, $d)) {
                        $str[$i + 3] = substr($str[$i + 3], 1);
                    } else {
                        $result .= $d;
                    }
                }
                $d = self::iconv('utf-8', $charset, $str[$i + 3]);
                if ('' !== trim($d)) {
                    $result .= $d;
                }
            } elseif (\ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) {
                $result .= "=?{$str[$i]}?{$str[$i + 1]}?{$str[$i + 2]}?={$str[$i + 3]}";
            } else {
                $result = false;
                break;
            }

$i += 4;
        }

return $result;
    }

public static function iconv_get_encoding($type = 'all')
    {
        switch ($type) {
            case 'input_encoding': return self::$inputEncoding;
            case 'output_encoding': return self::$outputEncoding;
            case 'internal_encoding': return self::$internalEncoding;
        }

return [
            'input_encoding' => self::$inputEncoding,
            'output_encoding' => self::$outputEncoding,
            'internal_encoding' => self::$internalEncoding,
        ];
    }

public static function iconv_set_encoding($type, $charset)
    {
        switch ($type) {
            case 'input_encoding': self::$inputEncoding = $charset; break;
            case 'output_encoding': self::$outputEncoding = $charset; break;
            case 'internal_encoding': self::$internalEncoding = $charset; break;
            default: return false;
        }

return true;
    }

public static function iconv_mime_encode($fieldName, $fieldValue, $pref = null)
    {
        if (!\is_array($pref)) {
            $pref = [];
        }

$pref += [
            'scheme' => 'B',
            'input-charset' => self::$internalEncoding,
            'output-charset' => self::$internalEncoding,
            'line-length' => 76,
            'line-break-chars' => "\r\n",
        ];

if (preg_match('/[\x80-\xFF]/', $fieldName)) {
            $fieldName = '';
        }

$scheme = strtoupper(substr($pref['scheme'], 0, 1));
        $in = strtolower($pref['input-charset']);
        $out = strtolower($pref['output-charset']);

if ('utf-8' !== $in && false === $fieldValue = self::iconv($in, 'utf-8', $fieldValue)) {
            return false;
        }

preg_match_all('/./us', $fieldValue, $chars);

$chars = $chars[0] ?? [];

$lineBreak = (int) $pref['line-length'];
        $lineStart = "=?{$pref['output-charset']}?{$scheme}?";
        $lineLength = \strlen($fieldName) + 2 + \strlen($lineStart) + 2;
        $lineOffset = \strlen($lineStart) + 3;
        $lineData = '';

$fieldValue = [];

$Q = 'Q' === $scheme;

foreach ($chars as $c) {
            if ('utf-8' !== $out && false === $c = self::iconv('utf-8', $out, $c)) {
                return false;
            }

$o = $Q
                ? $c = preg_replace_callback(
                    '/[=_\?\x00-\x1F\x80-\xFF]/',
                    [__CLASS__, 'qpByteCallback'],
                    $c
                )
                : base64_encode($lineData.$c);

if (isset($o[$lineBreak - $lineLength])) {
                if (!$Q) {
                    $lineData = base64_encode($lineData);
                }
                $fieldValue[] = $lineStart.$lineData.'?=';
                $lineLength = $lineOffset;
                $lineData = '';
            }

$lineData .= $c;
            $Q && $lineLength += \strlen($c);
        }

if ('' !== $lineData) {
            if (!$Q) {
                $lineData = base64_encode($lineData);
            }
            $fieldValue[] = $lineStart.$lineData.'?=';
        }

return $fieldName.': '.implode($pref['line-break-chars'].' ', $fieldValue);
    }

public static function iconv_strlen($s, $encoding = null)
    {
        static $hasXml = null;
        if (null === $hasXml) {
            $hasXml = \extension_loaded('xml');
        }

if ($hasXml) {
            return self::strlen1($s, $encoding);
        }

return self::strlen2($s, $encoding);
    }

public static function strlen1($s, $encoding = null)
    {
        if (null === $encoding) {
            $encoding = self::$internalEncoding;
        }
        if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) {
            return false;
        }

return \strlen(utf8_decode($s));
    }

public static function strlen2($s, $encoding = null)
    {
        if (null === $encoding) {
            $encoding = self::$internalEncoding;
        }
        if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) {
            return false;
        }

$ulenMask = self::$ulenMask;

$i = 0;
        $j = 0;
        $len = \strlen($s);

while ($i < $len) {
            $u = $s[$i] & "\xF0";
            $i += $ulenMask[$u] ?? 1;
            ++$j;
        }

return $j;
    }

public static function iconv_strpos($haystack, $needle, $offset = 0, $encoding = null)
    {
        if (null === $encoding) {
            $encoding = self::$internalEncoding;
        }

if (0 !== stripos($encoding, 'utf-8')) {
            if (false === $haystack = self::iconv($encoding, 'utf-8', $haystack)) {
                return false;
            }
            if (false === $needle = self::iconv($encoding, 'utf-8', $needle)) {
                return false;
            }
        }

if ($offset = (int) $offset) {
            $haystack = self::iconv_substr($haystack, $offset, 2147483647, 'utf-8');
        }
        $pos = strpos($haystack, $needle);

return false === $pos ? false : ($offset + ($pos ? self::iconv_strlen(substr($haystack, 0, $pos), 'utf-8') : 0));
    }

public static function iconv_strrpos($haystack, $needle, $encoding = null)
    {
        if (null === $encoding) {
            $encoding = self::$internalEncoding;
        }

$pos = isset($needle[0]) ? strrpos($haystack, $needle) : false;

return false === $pos ? false : self::iconv_strlen($pos ? substr($haystack, 0, $pos) : $haystack, 'utf-8');
    }

public static function iconv_substr($s, $start, $length = 2147483647, $encoding = null)
    {
        if (null === $encoding) {
            $encoding = self::$internalEncoding;
        }
        if (0 !== stripos($encoding, 'utf-8')) {
            $encoding = null;
        } elseif (false === $s = self::iconv($encoding, 'utf-8', $s)) {
            return false;
        }

$s = (string) $s;
        $slen = self::iconv_strlen($s, 'utf-8');
        $start = (int) $start;

if (0 > $start) {
            $start += $slen;
        }
        if (0 > $start) {
            if (\PHP_VERSION_ID < 80000) {
                return false;
            }

$start = 0;
        }
        if ($start >= $slen) {
            return \PHP_VERSION_ID >= 80000 ? '' : false;
        }

$rx = $slen - $start;

if (0 > $length) {
            $length += $rx;
        }
        if (0 === $length) {
            return '';
        }
        if (0 > $length) {
            return \PHP_VERSION_ID >= 80000 ? '' : false;
        }

if ($length > $rx) {
            $length = $rx;
        }

$rx = '/^'.($start ? self::pregOffset($start) : '').'('.self::pregOffset($length).')/u';

$s = preg_match($rx, $s, $s) ? $s[1] : '';

if (null === $encoding) {
            return $s;
        }

return self::iconv('utf-8', $encoding, $s);
    }

private static function loadMap($type, $charset, &$map)
    {
        if (!isset(self::$convertMap[$type.$charset])) {
            if (false === $map = self::getData($type.$charset)) {
                if ('to.' === $type && self::loadMap('from.', $charset, $map)) {
                    $map = array_flip($map);
                } else {
                    return false;
                }
            }

self::$convertMap[$type.$charset] = $map;
        } else {
            $map = self::$convertMap[$type.$charset];
        }

return true;
    }

private static function utf8ToUtf8($str, $ignore)
    {
        $ulenMask = self::$ulenMask;
        $valid = self::$isValidUtf8;

$u = $str;
        $i = $j = 0;
        $len = \strlen($str);

while ($i < $len) {
            if ($str[$i] < "\x80") {
                $u[$j++] = $str[$i++];
            } else {
                $ulen = $str[$i] & "\xF0";
                $ulen = $ulenMask[$ulen] ?? 1;
                $uchr = substr($str, $i, $ulen);

if (1 === $ulen || !($valid || preg_match('/^.$/us', $uchr))) {
                    if ($ignore) {
                        ++$i;
                        continue;
                    }

trigger_error(self::ERROR_ILLEGAL_CHARACTER);

return false;
                }

$i += $ulen;

$u[$j++] = $uchr[0];

isset($uchr[1]) && 0 !== ($u[$j++] = $uchr[1])
                    && isset($uchr[2]) && 0 !== ($u[$j++] = $uchr[2])
                    && isset($uchr[3]) && 0 !== ($u[$j++] = $uchr[3]);
            }
        }

return substr($u, 0, $j);
    }

private static function mapToUtf8(&$result, array $map, $str, $ignore)
    {
        $len = \strlen($str);
        for ($i = 0; $i < $len; ++$i) {
            if (isset($str[$i + 1], $map[$str[$i].$str[$i + 1]])) {
                $result .= $map[$str[$i].$str[++$i]];
            } elseif (isset($map[$str[$i]])) {
                $result .= $map[$str[$i]];
            } elseif (!$ignore) {
                trigger_error(self::ERROR_ILLEGAL_CHARACTER);

return false;
            }
        }

return true;
    }

private static function mapFromUtf8(&$result, array $map, $str, $ignore, $translit)
    {
        $ulenMask = self::$ulenMask;
        $valid = self::$isValidUtf8;

if ($translit && !self::$translitMap) {
            self::$translitMap = self::getData('translit');
        }

$i = 0;
        $len = \strlen($str);

while ($i < $len) {
            if ($str[$i] < "\x80") {
                $uchr = $str[$i++];
            } else {
                $ulen = $str[$i] & "\xF0";
                $ulen = $ulenMask[$ulen] ?? 1;
                $uchr = substr($str, $i, $ulen);

if ($ignore && (1 === $ulen || !($valid || preg_match('/^.$/us', $uchr)))) {
                    ++$i;
                    continue;
                }

$i += $ulen;
            }

if (isset($map[$uchr])) {
                $result .= $map[$uchr];
            } elseif ($translit) {
                if (isset(self::$translitMap[$uchr])) {
                    $uchr = self::$translitMap[$uchr];
                } elseif ($uchr >= "\xC3\x80") {
                    $uchr = \Normalizer::normalize($uchr, \Normalizer::NFD);

if ($uchr[0] < "\x80") {
                        $uchr = $uchr[0];
                    } elseif ($ignore) {
                        continue;
                    } else {
                        return false;
                    }
                } elseif ($ignore) {
                    continue;
                } else {
                    return false;
                }

$str = $uchr.substr($str, $i);
                $len = \strlen($str);
                $i = 0;
            } elseif (!$ignore) {
                return false;
            }
        }

return true;
    }

private static function qpByteCallback(array $m)
    {
        return '='.strtoupper(dechex(\ord($m[0])));
    }

private static function pregOffset($offset)
    {
        $rx = [];
        $offset = (int) $offset;

while ($offset > 65535) {
            $rx[] = '.{65535}';
            $offset -= 65535;
        }

return implode('', $rx).'.{'.$offset.'}';
    }

private static function getData($file)
    {
        if (file_exists($file = __DIR__.'/Resources/charset/'.$file.'.php')) {
            return require $file;
        }

return false;
    }
}

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