<?php
namespace MailPoetVendor\Symfony\Polyfill\Iconv;
if (!defined('ABSPATH')) exit;
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 >= "À") {
 $uchr = \MailPoetVendor\Normalizer::normalize($uchr, \MailPoetVendor\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;
 }
}
