<?php
namespace MailPoetVendor\Symfony\Polyfill\Mbstring;
if (!defined('ABSPATH')) exit;
final class Mbstring
{
 public const MB_CASE_FOLD = \PHP_INT_MAX;
 private const SIMPLE_CASE_FOLD = [['µ', 'ſ', "ͅ", 'ς', "ϐ", "ϑ", "ϕ", "ϖ", "ϰ", "ϱ", "ϵ", "ẛ", "ι"], ['μ', 's', 'ι', 'σ', 'β', 'θ', 'φ', 'π', 'κ', 'ρ', 'ε', "ṡ", 'ι']];
 private static $encodingList = ['ASCII', 'UTF-8'];
 private static $language = 'neutral';
 private static $internalEncoding = 'UTF-8';
 public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)
 {
 if (\is_array($fromEncoding) || null !== $fromEncoding && \false !== \strpos($fromEncoding, ',')) {
 $fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
 } else {
 $fromEncoding = self::getEncoding($fromEncoding);
 }
 $toEncoding = self::getEncoding($toEncoding);
 if ('BASE64' === $fromEncoding) {
 $s = \base64_decode($s);
 $fromEncoding = $toEncoding;
 }
 if ('BASE64' === $toEncoding) {
 return \base64_encode($s);
 }
 if ('HTML-ENTITIES' === $toEncoding || 'HTML' === $toEncoding) {
 if ('HTML-ENTITIES' === $fromEncoding || 'HTML' === $fromEncoding) {
 $fromEncoding = 'Windows-1252';
 }
 if ('UTF-8' !== $fromEncoding) {
 $s = \iconv($fromEncoding, 'UTF-8//IGNORE', $s);
 }
 return \preg_replace_callback('/[\\x80-\\xFF]+/', [__CLASS__, 'html_encoding_callback'], $s);
 }
 if ('HTML-ENTITIES' === $fromEncoding) {
 $s = \html_entity_decode($s, \ENT_COMPAT, 'UTF-8');
 $fromEncoding = 'UTF-8';
 }
 return \iconv($fromEncoding, $toEncoding . '//IGNORE', $s);
 }
 public static function mb_convert_variables($toEncoding, $fromEncoding, &...$vars)
 {
 $ok = \true;
 \array_walk_recursive($vars, function (&$v) use(&$ok, $toEncoding, $fromEncoding) {
 if (\false === ($v = self::mb_convert_encoding($v, $toEncoding, $fromEncoding))) {
 $ok = \false;
 }
 });
 return $ok ? $fromEncoding : \false;
 }
 public static function mb_decode_mimeheader($s)
 {
 return \iconv_mime_decode($s, 2, self::$internalEncoding);
 }
 public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefeed = null, $indent = null)
 {
 \trigger_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead', \E_USER_WARNING);
 }
 public static function mb_decode_numericentity($s, $convmap, $encoding = null)
 {
 if (null !== $s && !\is_scalar($s) && !(\is_object($s) && \method_exists($s, '__toString'))) {
 \trigger_error('mb_decode_numericentity() expects parameter 1 to be string, ' . \gettype($s) . ' given', \E_USER_WARNING);
 return null;
 }
 if (!\is_array($convmap) || 80000 > \PHP_VERSION_ID && !$convmap) {
 return \false;
 }
 if (null !== $encoding && !\is_scalar($encoding)) {
 \trigger_error('mb_decode_numericentity() expects parameter 3 to be string, ' . \gettype($s) . ' given', \E_USER_WARNING);
 return '';
 // Instead of null (cf. mb_encode_numericentity).
 }
 $s = (string) $s;
 if ('' === $s) {
 return '';
 }
 $encoding = self::getEncoding($encoding);
 if ('UTF-8' === $encoding) {
 $encoding = null;
 if (!\preg_match('//u', $s)) {
 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
 }
 } else {
 $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
 }
 $cnt = \floor(\count($convmap) / 4) * 4;
 for ($i = 0; $i < $cnt; $i += 4) {
 // collector_decode_htmlnumericentity ignores $convmap[$i + 3]
 $convmap[$i] += $convmap[$i + 2];
 $convmap[$i + 1] += $convmap[$i + 2];
 }
 $s = \preg_replace_callback('/&#(?:0*([0-9]+)|x0*([0-9a-fA-F]+))(?!&);?/', function (array $m) use($cnt, $convmap) {
 $c = isset($m[2]) ? (int) \hexdec($m[2]) : $m[1];
 for ($i = 0; $i < $cnt; $i += 4) {
 if ($c >= $convmap[$i] && $c <= $convmap[$i + 1]) {
 return self::mb_chr($c - $convmap[$i + 2]);
 }
 }
 return $m[0];
 }, $s);
 if (null === $encoding) {
 return $s;
 }
 return \iconv('UTF-8', $encoding . '//IGNORE', $s);
 }
 public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = \false)
 {
 if (null !== $s && !\is_scalar($s) && !(\is_object($s) && \method_exists($s, '__toString'))) {
 \trigger_error('mb_encode_numericentity() expects parameter 1 to be string, ' . \gettype($s) . ' given', \E_USER_WARNING);
 return null;
 }
 if (!\is_array($convmap) || 80000 > \PHP_VERSION_ID && !$convmap) {
 return \false;
 }
 if (null !== $encoding && !\is_scalar($encoding)) {
 \trigger_error('mb_encode_numericentity() expects parameter 3 to be string, ' . \gettype($s) . ' given', \E_USER_WARNING);
 return null;
 // Instead of '' (cf. mb_decode_numericentity).
 }
 if (null !== $is_hex && !\is_scalar($is_hex)) {
 \trigger_error('mb_encode_numericentity() expects parameter 4 to be boolean, ' . \gettype($s) . ' given', \E_USER_WARNING);
 return null;
 }
 $s = (string) $s;
 if ('' === $s) {
 return '';
 }
 $encoding = self::getEncoding($encoding);
 if ('UTF-8' === $encoding) {
 $encoding = null;
 if (!\preg_match('//u', $s)) {
 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
 }
 } else {
 $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
 }
 static $ulenMask = ["\xc0" => 2, "\xd0" => 2, "\xe0" => 3, "\xf0" => 4];
 $cnt = \floor(\count($convmap) / 4) * 4;
 $i = 0;
 $len = \strlen($s);
 $result = '';
 while ($i < $len) {
 $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xf0"];
 $uchr = \substr($s, $i, $ulen);
 $i += $ulen;
 $c = self::mb_ord($uchr);
 for ($j = 0; $j < $cnt; $j += 4) {
 if ($c >= $convmap[$j] && $c <= $convmap[$j + 1]) {
 $cOffset = $c + $convmap[$j + 2] & $convmap[$j + 3];
 $result .= $is_hex ? \sprintf('&#x%X;', $cOffset) : '&#' . $cOffset . ';';
 continue 2;
 }
 }
 $result .= $uchr;
 }
 if (null === $encoding) {
 return $result;
 }
 return \iconv('UTF-8', $encoding . '//IGNORE', $result);
 }
 public static function mb_convert_case($s, $mode, $encoding = null)
 {
 $s = (string) $s;
 if ('' === $s) {
 return '';
 }
 $encoding = self::getEncoding($encoding);
 if ('UTF-8' === $encoding) {
 $encoding = null;
 if (!\preg_match('//u', $s)) {
 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
 }
 } else {
 $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
 }
 if (\MB_CASE_TITLE == $mode) {
 static $titleRegexp = null;
 if (null === $titleRegexp) {
 $titleRegexp = self::getData('titleCaseRegexp');
 }
 $s = \preg_replace_callback($titleRegexp, [__CLASS__, 'title_case'], $s);
 } else {
 if (\MB_CASE_UPPER == $mode) {
 static $upper = null;
 if (null === $upper) {
 $upper = self::getData('upperCase');
 }
 $map = $upper;
 } else {
 if (self::MB_CASE_FOLD === $mode) {
 static $caseFolding = null;
 if (null === $caseFolding) {
 $caseFolding = self::getData('caseFolding');
 }
 $s = \strtr($s, $caseFolding);
 }
 static $lower = null;
 if (null === $lower) {
 $lower = self::getData('lowerCase');
 }
 $map = $lower;
 }
 static $ulenMask = ["\xc0" => 2, "\xd0" => 2, "\xe0" => 3, "\xf0" => 4];
 $i = 0;
 $len = \strlen($s);
 while ($i < $len) {
 $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xf0"];
 $uchr = \substr($s, $i, $ulen);
 $i += $ulen;
 if (isset($map[$uchr])) {
 $uchr = $map[$uchr];
 $nlen = \strlen($uchr);
 if ($nlen == $ulen) {
 $nlen = $i;
 do {
 $s[--$nlen] = $uchr[--$ulen];
 } while ($ulen);
 } else {
 $s = \substr_replace($s, $uchr, $i - $ulen, $ulen);
 $len += $nlen - $ulen;
 $i += $nlen - $ulen;
 }
 }
 }
 }
 if (null === $encoding) {
 return $s;
 }
 return \iconv('UTF-8', $encoding . '//IGNORE', $s);
 }
 public static function mb_internal_encoding($encoding = null)
 {
 if (null === $encoding) {
 return self::$internalEncoding;
 }
 $normalizedEncoding = self::getEncoding($encoding);
 if ('UTF-8' === $normalizedEncoding || \false !== @\iconv($normalizedEncoding, $normalizedEncoding, ' ')) {
 self::$internalEncoding = $normalizedEncoding;
 return \true;
 }
 if (80000 > \PHP_VERSION_ID) {
 return \false;
 }
 throw new \ValueError(\sprintf('Argument #1 ($encoding) must be a valid encoding, "%s" given', $encoding));
 }
 public static function mb_language($lang = null)
 {
 if (null === $lang) {
 return self::$language;
 }
 switch ($normalizedLang = \strtolower($lang)) {
 case 'uni':
 case 'neutral':
 self::$language = $normalizedLang;
 return \true;
 }
 if (80000 > \PHP_VERSION_ID) {
 return \false;
 }
 throw new \ValueError(\sprintf('Argument #1 ($language) must be a valid language, "%s" given', $lang));
 }
 public static function mb_list_encodings()
 {
 return ['UTF-8'];
 }
 public static function mb_encoding_aliases($encoding)
 {
 switch (\strtoupper($encoding)) {
 case 'UTF8':
 case 'UTF-8':
 return ['utf8'];
 }
 return \false;
 }
 public static function mb_check_encoding($var = null, $encoding = null)
 {
 if (\PHP_VERSION_ID < 70200 && \is_array($var)) {
 \trigger_error('mb_check_encoding() expects parameter 1 to be string, array given', \E_USER_WARNING);
 return null;
 }
 if (null === $encoding) {
 if (null === $var) {
 return \false;
 }
 $encoding = self::$internalEncoding;
 }
 if (!\is_array($var)) {
 return self::mb_detect_encoding($var, [$encoding]) || \false !== @\iconv($encoding, $encoding, $var);
 }
 foreach ($var as $key => $value) {
 if (!self::mb_check_encoding($key, $encoding)) {
 return \false;
 }
 if (!self::mb_check_encoding($value, $encoding)) {
 return \false;
 }
 }
 return \true;
 }
 public static function mb_detect_encoding($str, $encodingList = null, $strict = \false)
 {
 if (null === $encodingList) {
 $encodingList = self::$encodingList;
 } else {
 if (!\is_array($encodingList)) {
 $encodingList = \array_map('trim', \explode(',', $encodingList));
 }
 $encodingList = \array_map('strtoupper', $encodingList);
 }
 foreach ($encodingList as $enc) {
 switch ($enc) {
 case 'ASCII':
 if (!\preg_match('/[\\x80-\\xFF]/', $str)) {
 return $enc;
 }
 break;
 case 'UTF8':
 case 'UTF-8':
 if (\preg_match('//u', $str)) {
 return 'UTF-8';
 }
 break;
 default:
 if (0 === \strncmp($enc, 'ISO-8859-', 9)) {
 return $enc;
 }
 }
 }
 return \false;
 }
 public static function mb_detect_order($encodingList = null)
 {
 if (null === $encodingList) {
 return self::$encodingList;
 }
 if (!\is_array($encodingList)) {
 $encodingList = \array_map('trim', \explode(',', $encodingList));
 }
 $encodingList = \array_map('strtoupper', $encodingList);
 foreach ($encodingList as $enc) {
 switch ($enc) {
 default:
 if (\strncmp($enc, 'ISO-8859-', 9)) {
 return \false;
 }
 // no break
 case 'ASCII':
 case 'UTF8':
 case 'UTF-8':
 }
 }
 self::$encodingList = $encodingList;
 return \true;
 }
 public static function mb_strlen($s, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('CP850' === $encoding || 'ASCII' === $encoding) {
 return \strlen($s);
 }
 return @\iconv_strlen($s, $encoding);
 }
 public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('CP850' === $encoding || 'ASCII' === $encoding) {
 return \strpos($haystack, $needle, $offset);
 }
 $needle = (string) $needle;
 if ('' === $needle) {
 if (80000 > \PHP_VERSION_ID) {
 \trigger_error(__METHOD__ . ': Empty delimiter', \E_USER_WARNING);
 return \false;
 }
 return 0;
 }
 return \iconv_strpos($haystack, $needle, $offset, $encoding);
 }
 public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('CP850' === $encoding || 'ASCII' === $encoding) {
 return \strrpos($haystack, $needle, $offset);
 }
 if ($offset != (int) $offset) {
 $offset = 0;
 } elseif ($offset = (int) $offset) {
 if ($offset < 0) {
 if (0 > ($offset += self::mb_strlen($needle))) {
 $haystack = self::mb_substr($haystack, 0, $offset, $encoding);
 }
 $offset = 0;
 } else {
 $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
 }
 }
 $pos = '' !== $needle || 80000 > \PHP_VERSION_ID ? \iconv_strrpos($haystack, $needle, $encoding) : self::mb_strlen($haystack, $encoding);
 return \false !== $pos ? $offset + $pos : \false;
 }
 public static function mb_str_split($string, $split_length = 1, $encoding = null)
 {
 if (null !== $string && !\is_scalar($string) && !(\is_object($string) && \method_exists($string, '__toString'))) {
 \trigger_error('mb_str_split() expects parameter 1 to be string, ' . \gettype($string) . ' given', \E_USER_WARNING);
 return null;
 }
 if (1 > ($split_length = (int) $split_length)) {
 if (80000 > \PHP_VERSION_ID) {
 \trigger_error('The length of each segment must be greater than zero', \E_USER_WARNING);
 return \false;
 }
 throw new \ValueError('Argument #2 ($length) must be greater than 0');
 }
 if (null === $encoding) {
 $encoding = \mb_internal_encoding();
 }
 if ('UTF-8' === ($encoding = self::getEncoding($encoding))) {
 $rx = '/(';
 while (65535 < $split_length) {
 $rx .= '.{65535}';
 $split_length -= 65535;
 }
 $rx .= '.{' . $split_length . '})/us';
 return \preg_split($rx, $string, -1, \PREG_SPLIT_DELIM_CAPTURE | \PREG_SPLIT_NO_EMPTY);
 }
 $result = [];
 $length = \mb_strlen($string, $encoding);
 for ($i = 0; $i < $length; $i += $split_length) {
 $result[] = \mb_substr($string, $i, $split_length, $encoding);
 }
 return $result;
 }
 public static function mb_strtolower($s, $encoding = null)
 {
 return self::mb_convert_case($s, \MB_CASE_LOWER, $encoding);
 }
 public static function mb_strtoupper($s, $encoding = null)
 {
 return self::mb_convert_case($s, \MB_CASE_UPPER, $encoding);
 }
 public static function mb_substitute_character($c = null)
 {
 if (null === $c) {
 return 'none';
 }
 if (0 === \strcasecmp($c, 'none')) {
 return \true;
 }
 if (80000 > \PHP_VERSION_ID) {
 return \false;
 }
 if (\is_int($c) || 'long' === $c || 'entity' === $c) {
 return \false;
 }
 throw new \ValueError('Argument #1 ($substitute_character) must be "none", "long", "entity" or a valid codepoint');
 }
 public static function mb_substr($s, $start, $length = null, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('CP850' === $encoding || 'ASCII' === $encoding) {
 return (string) \substr($s, $start, null === $length ? 2147483647 : $length);
 }
 if ($start < 0) {
 $start = \iconv_strlen($s, $encoding) + $start;
 if ($start < 0) {
 $start = 0;
 }
 }
 if (null === $length) {
 $length = 2147483647;
 } elseif ($length < 0) {
 $length = \iconv_strlen($s, $encoding) + $length - $start;
 if ($length < 0) {
 return '';
 }
 }
 return (string) \iconv_substr($s, $start, $length, $encoding);
 }
 public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
 {
 [$haystack, $needle] = \str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], [self::mb_convert_case($haystack, \MB_CASE_LOWER, $encoding), self::mb_convert_case($needle, \MB_CASE_LOWER, $encoding)]);
 return self::mb_strpos($haystack, $needle, $offset, $encoding);
 }
 public static function mb_stristr($haystack, $needle, $part = \false, $encoding = null)
 {
 $pos = self::mb_stripos($haystack, $needle, 0, $encoding);
 return self::getSubpart($pos, $part, $haystack, $encoding);
 }
 public static function mb_strrchr($haystack, $needle, $part = \false, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('CP850' === $encoding || 'ASCII' === $encoding) {
 $pos = \strrpos($haystack, $needle);
 } else {
 $needle = self::mb_substr($needle, 0, 1, $encoding);
 $pos = \iconv_strrpos($haystack, $needle, $encoding);
 }
 return self::getSubpart($pos, $part, $haystack, $encoding);
 }
 public static function mb_strrichr($haystack, $needle, $part = \false, $encoding = null)
 {
 $needle = self::mb_substr($needle, 0, 1, $encoding);
 $pos = self::mb_strripos($haystack, $needle, $encoding);
 return self::getSubpart($pos, $part, $haystack, $encoding);
 }
 public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
 {
 $haystack = self::mb_convert_case($haystack, \MB_CASE_LOWER, $encoding);
 $needle = self::mb_convert_case($needle, \MB_CASE_LOWER, $encoding);
 $haystack = \str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], $haystack);
 $needle = \str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], $needle);
 return self::mb_strrpos($haystack, $needle, $offset, $encoding);
 }
 public static function mb_strstr($haystack, $needle, $part = \false, $encoding = null)
 {
 $pos = \strpos($haystack, $needle);
 if (\false === $pos) {
 return \false;
 }
 if ($part) {
 return \substr($haystack, 0, $pos);
 }
 return \substr($haystack, $pos);
 }
 public static function mb_get_info($type = 'all')
 {
 $info = ['internal_encoding' => self::$internalEncoding, 'http_output' => 'pass', 'http_output_conv_mimetypes' => '^(text/|application/xhtml\\+xml)', 'func_overload' => 0, 'func_overload_list' => 'no overload', 'mail_charset' => 'UTF-8', 'mail_header_encoding' => 'BASE64', 'mail_body_encoding' => 'BASE64', 'illegal_chars' => 0, 'encoding_translation' => 'Off', 'language' => self::$language, 'detect_order' => self::$encodingList, 'substitute_character' => 'none', 'strict_detection' => 'Off'];
 if ('all' === $type) {
 return $info;
 }
 if (isset($info[$type])) {
 return $info[$type];
 }
 return \false;
 }
 public static function mb_http_input($type = '')
 {
 return \false;
 }
 public static function mb_http_output($encoding = null)
 {
 return null !== $encoding ? 'pass' === $encoding : 'pass';
 }
 public static function mb_strwidth($s, $encoding = null)
 {
 $encoding = self::getEncoding($encoding);
 if ('UTF-8' !== $encoding) {
 $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
 }
 $s = \preg_replace('/[\\x{1100}-\\x{115F}\\x{2329}\\x{232A}\\x{2E80}-\\x{303E}\\x{3040}-\\x{A4CF}\\x{AC00}-\\x{D7A3}\\x{F900}-\\x{FAFF}\\x{FE10}-\\x{FE19}\\x{FE30}-\\x{FE6F}\\x{FF00}-\\x{FF60}\\x{FFE0}-\\x{FFE6}\\x{20000}-\\x{2FFFD}\\x{30000}-\\x{3FFFD}]/u', '', $s, -1, $wide);
 return ($wide << 1) + \iconv_strlen($s, 'UTF-8');
 }
 public static function mb_substr_count($haystack, $needle, $encoding = null)
 {
 return \substr_count($haystack, $needle);
 }
 public static function mb_output_handler($contents, $status)
 {
 return $contents;
 }
 public static function mb_chr($code, $encoding = null)
 {
 if (0x80 > ($code %= 0x200000)) {
 $s = \chr($code);
 } elseif (0x800 > $code) {
 $s = \chr(0xc0 | $code >> 6) . \chr(0x80 | $code & 0x3f);
 } elseif (0x10000 > $code) {
 $s = \chr(0xe0 | $code >> 12) . \chr(0x80 | $code >> 6 & 0x3f) . \chr(0x80 | $code & 0x3f);
 } else {
 $s = \chr(0xf0 | $code >> 18) . \chr(0x80 | $code >> 12 & 0x3f) . \chr(0x80 | $code >> 6 & 0x3f) . \chr(0x80 | $code & 0x3f);
 }
 if ('UTF-8' !== ($encoding = self::getEncoding($encoding))) {
 $s = \mb_convert_encoding($s, $encoding, 'UTF-8');
 }
 return $s;
 }
 public static function mb_ord($s, $encoding = null)
 {
 if ('UTF-8' !== ($encoding = self::getEncoding($encoding))) {
 $s = \mb_convert_encoding($s, 'UTF-8', $encoding);
 }
 if (1 === \strlen($s)) {
 return \ord($s);
 }
 $code = ($s = \unpack('C*', \substr($s, 0, 4))) ? $s[1] : 0;
 if (0xf0 <= $code) {
 return ($code - 0xf0 << 18) + ($s[2] - 0x80 << 12) + ($s[3] - 0x80 << 6) + $s[4] - 0x80;
 }
 if (0xe0 <= $code) {
 return ($code - 0xe0 << 12) + ($s[2] - 0x80 << 6) + $s[3] - 0x80;
 }
 if (0xc0 <= $code) {
 return ($code - 0xc0 << 6) + $s[2] - 0x80;
 }
 return $code;
 }
 public static function mb_str_pad(string $string, int $length, string $pad_string = ' ', int $pad_type = \STR_PAD_RIGHT,?string $encoding = null) : string
 {
 if (!\in_array($pad_type, [\STR_PAD_RIGHT, \STR_PAD_LEFT, \STR_PAD_BOTH], \true)) {
 throw new \ValueError('mb_str_pad(): Argument #4 ($pad_type) must be STR_PAD_LEFT, STR_PAD_RIGHT, or STR_PAD_BOTH');
 }
 if (null === $encoding) {
 $encoding = self::mb_internal_encoding();
 }
 try {
 $validEncoding = @self::mb_check_encoding('', $encoding);
 } catch (\ValueError $e) {
 throw new \ValueError(\sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
 }
 // BC for PHP 7.3 and lower
 if (!$validEncoding) {
 throw new \ValueError(\sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
 }
 if (self::mb_strlen($pad_string, $encoding) <= 0) {
 throw new \ValueError('mb_str_pad(): Argument #3 ($pad_string) must be a non-empty string');
 }
 $paddingRequired = $length - self::mb_strlen($string, $encoding);
 if ($paddingRequired < 1) {
 return $string;
 }
 switch ($pad_type) {
 case \STR_PAD_LEFT:
 return self::mb_substr(\str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding) . $string;
 case \STR_PAD_RIGHT:
 return $string . self::mb_substr(\str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding);
 default:
 $leftPaddingLength = \floor($paddingRequired / 2);
 $rightPaddingLength = $paddingRequired - $leftPaddingLength;
 return self::mb_substr(\str_repeat($pad_string, $leftPaddingLength), 0, $leftPaddingLength, $encoding) . $string . self::mb_substr(\str_repeat($pad_string, $rightPaddingLength), 0, $rightPaddingLength, $encoding);
 }
 }
 private static function getSubpart($pos, $part, $haystack, $encoding)
 {
 if (\false === $pos) {
 return \false;
 }
 if ($part) {
 return self::mb_substr($haystack, 0, $pos, $encoding);
 }
 return self::mb_substr($haystack, $pos, null, $encoding);
 }
 private static function html_encoding_callback(array $m)
 {
 $i = 1;
 $entities = '';
 $m = \unpack('C*', \htmlentities($m[0], \ENT_COMPAT, 'UTF-8'));
 while (isset($m[$i])) {
 if (0x80 > $m[$i]) {
 $entities .= \chr($m[$i++]);
 continue;
 }
 if (0xf0 <= $m[$i]) {
 $c = ($m[$i++] - 0xf0 << 18) + ($m[$i++] - 0x80 << 12) + ($m[$i++] - 0x80 << 6) + $m[$i++] - 0x80;
 } elseif (0xe0 <= $m[$i]) {
 $c = ($m[$i++] - 0xe0 << 12) + ($m[$i++] - 0x80 << 6) + $m[$i++] - 0x80;
 } else {
 $c = ($m[$i++] - 0xc0 << 6) + $m[$i++] - 0x80;
 }
 $entities .= '&#' . $c . ';';
 }
 return $entities;
 }
 private static function title_case(array $s)
 {
 return self::mb_convert_case($s[1], \MB_CASE_UPPER, 'UTF-8') . self::mb_convert_case($s[2], \MB_CASE_LOWER, 'UTF-8');
 }
 private static function getData($file)
 {
 if (\file_exists($file = __DIR__ . '/Resources/unidata/' . $file . '.php')) {
 return require $file;
 }
 return \false;
 }
 private static function getEncoding($encoding)
 {
 if (null === $encoding) {
 return self::$internalEncoding;
 }
 if ('UTF-8' === $encoding) {
 return 'UTF-8';
 }
 $encoding = \strtoupper($encoding);
 if ('8BIT' === $encoding || 'BINARY' === $encoding) {
 return 'CP850';
 }
 if ('UTF8' === $encoding) {
 return 'UTF-8';
 }
 return $encoding;
 }
}
