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Edit File: UnicodeString.php

<?php
namespace MailPoetVendor\Symfony\Component\String;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Symfony\Component\String\Exception\ExceptionInterface;
use MailPoetVendor\Symfony\Component\String\Exception\InvalidArgumentException;
class UnicodeString extends AbstractUnicodeString
{
 public function __construct(string $string = '')
 {
 $this->string = \normalizer_is_normalized($string) ? $string : \normalizer_normalize($string);
 if (\false === $this->string) {
 throw new InvalidArgumentException('Invalid UTF-8 string.');
 }
 }
 public function append(string ...$suffix) : AbstractString
 {
 $str = clone $this;
 $str->string = $this->string . (1 >= \count($suffix) ? $suffix[0] ?? '' : \implode('', $suffix));
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 if (\false === $str->string) {
 throw new InvalidArgumentException('Invalid UTF-8 string.');
 }
 return $str;
 }
 public function chunk(int $length = 1) : array
 {
 if (1 > $length) {
 throw new InvalidArgumentException('The chunk length must be greater than zero.');
 }
 if ('' === $this->string) {
 return [];
 }
 $rx = '/(';
 while (65535 < $length) {
 $rx .= '\\X{65535}';
 $length -= 65535;
 }
 $rx .= '\\X{' . $length . '})/u';
 $str = clone $this;
 $chunks = [];
 foreach (\preg_split($rx, $this->string, -1, \PREG_SPLIT_DELIM_CAPTURE | \PREG_SPLIT_NO_EMPTY) as $chunk) {
 $str->string = $chunk;
 $chunks[] = clone $str;
 }
 return $chunks;
 }
 public function endsWith($suffix) : bool
 {
 if ($suffix instanceof AbstractString) {
 $suffix = $suffix->string;
 } elseif (\is_array($suffix) || $suffix instanceof \Traversable) {
 return parent::endsWith($suffix);
 } else {
 $suffix = (string) $suffix;
 }
 $form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
 \normalizer_is_normalized($suffix, $form) ?: ($suffix = \normalizer_normalize($suffix, $form));
 if ('' === $suffix || \false === $suffix) {
 return \false;
 }
 if ($this->ignoreCase) {
 return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix)), $suffix, 0, 'UTF-8');
 }
 return $suffix === \grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix));
 }
 public function equalsTo($string) : bool
 {
 if ($string instanceof AbstractString) {
 $string = $string->string;
 } elseif (\is_array($string) || $string instanceof \Traversable) {
 return parent::equalsTo($string);
 } else {
 $string = (string) $string;
 }
 $form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
 \normalizer_is_normalized($string, $form) ?: ($string = \normalizer_normalize($string, $form));
 if ('' !== $string && \false !== $string && $this->ignoreCase) {
 return \strlen($string) === \strlen($this->string) && 0 === \mb_stripos($this->string, $string, 0, 'UTF-8');
 }
 return $string === $this->string;
 }
 public function indexOf($needle, int $offset = 0) : ?int
 {
 if ($needle instanceof AbstractString) {
 $needle = $needle->string;
 } elseif (\is_array($needle) || $needle instanceof \Traversable) {
 return parent::indexOf($needle, $offset);
 } else {
 $needle = (string) $needle;
 }
 $form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
 \normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
 if ('' === $needle || \false === $needle) {
 return null;
 }
 try {
 $i = $this->ignoreCase ? \grapheme_stripos($this->string, $needle, $offset) : \grapheme_strpos($this->string, $needle, $offset);
 } catch (\ValueError $e) {
 return null;
 }
 return \false === $i ? null : $i;
 }
 public function indexOfLast($needle, int $offset = 0) : ?int
 {
 if ($needle instanceof AbstractString) {
 $needle = $needle->string;
 } elseif (\is_array($needle) || $needle instanceof \Traversable) {
 return parent::indexOfLast($needle, $offset);
 } else {
 $needle = (string) $needle;
 }
 $form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
 \normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
 if ('' === $needle || \false === $needle) {
 return null;
 }
 $string = $this->string;
 if (0 > $offset) {
 // workaround https://bugs.php.net/74264
 if (0 > ($offset += \grapheme_strlen($needle))) {
 $string = \grapheme_substr($string, 0, $offset);
 }
 $offset = 0;
 }
 $i = $this->ignoreCase ? \grapheme_strripos($string, $needle, $offset) : \grapheme_strrpos($string, $needle, $offset);
 return \false === $i ? null : $i;
 }
 public function join(array $strings, ?string $lastGlue = null) : AbstractString
 {
 $str = parent::join($strings, $lastGlue);
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 return $str;
 }
 public function length() : int
 {
 return \grapheme_strlen($this->string);
 }
 public function normalize(int $form = self::NFC) : parent
 {
 $str = clone $this;
 if (\in_array($form, [self::NFC, self::NFKC], \true)) {
 \normalizer_is_normalized($str->string, $form) ?: ($str->string = \normalizer_normalize($str->string, $form));
 } elseif (!\in_array($form, [self::NFD, self::NFKD], \true)) {
 throw new InvalidArgumentException('Unsupported normalization form.');
 } elseif (!\normalizer_is_normalized($str->string, $form)) {
 $str->string = \normalizer_normalize($str->string, $form);
 $str->ignoreCase = null;
 }
 return $str;
 }
 public function prepend(string ...$prefix) : AbstractString
 {
 $str = clone $this;
 $str->string = (1 >= \count($prefix) ? $prefix[0] ?? '' : \implode('', $prefix)) . $this->string;
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 if (\false === $str->string) {
 throw new InvalidArgumentException('Invalid UTF-8 string.');
 }
 return $str;
 }
 public function replace(string $from, string $to) : AbstractString
 {
 $str = clone $this;
 \normalizer_is_normalized($from) ?: ($from = \normalizer_normalize($from));
 if ('' !== $from && \false !== $from) {
 $tail = $str->string;
 $result = '';
 $indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
 while ('' !== $tail && \false !== ($i = $indexOf($tail, $from))) {
 $slice = \grapheme_substr($tail, 0, $i);
 $result .= $slice . $to;
 $tail = \substr($tail, \strlen($slice) + \strlen($from));
 }
 $str->string = $result . $tail;
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 if (\false === $str->string) {
 throw new InvalidArgumentException('Invalid UTF-8 string.');
 }
 }
 return $str;
 }
 public function replaceMatches(string $fromRegexp, $to) : AbstractString
 {
 $str = parent::replaceMatches($fromRegexp, $to);
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 return $str;
 }
 public function slice(int $start = 0, ?int $length = null) : AbstractString
 {
 $str = clone $this;
 if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
 $start = 0;
 }
 $str->string = (string) \grapheme_substr($this->string, $start, $length ?? 2147483647);
 return $str;
 }
 public function splice(string $replacement, int $start = 0, ?int $length = null) : AbstractString
 {
 $str = clone $this;
 if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
 $start = 0;
 }
 $start = $start ? \strlen(\grapheme_substr($this->string, 0, $start)) : 0;
 $length = $length ? \strlen(\grapheme_substr($this->string, $start, $length ?? 2147483647)) : $length;
 $str->string = \substr_replace($this->string, $replacement, $start, $length ?? 2147483647);
 \normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
 if (\false === $str->string) {
 throw new InvalidArgumentException('Invalid UTF-8 string.');
 }
 return $str;
 }
 public function split(string $delimiter, ?int $limit = null, ?int $flags = null) : array
 {
 if (1 > ($limit = $limit ?? 2147483647)) {
 throw new InvalidArgumentException('Split limit must be a positive integer.');
 }
 if ('' === $delimiter) {
 throw new InvalidArgumentException('Split delimiter is empty.');
 }
 if (null !== $flags) {
 return parent::split($delimiter . 'u', $limit, $flags);
 }
 \normalizer_is_normalized($delimiter) ?: ($delimiter = \normalizer_normalize($delimiter));
 if (\false === $delimiter) {
 throw new InvalidArgumentException('Split delimiter is not a valid UTF-8 string.');
 }
 $str = clone $this;
 $tail = $this->string;
 $chunks = [];
 $indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
 while (1 < $limit && \false !== ($i = $indexOf($tail, $delimiter))) {
 $str->string = \grapheme_substr($tail, 0, $i);
 $chunks[] = clone $str;
 $tail = \substr($tail, \strlen($str->string) + \strlen($delimiter));
 --$limit;
 }
 $str->string = $tail;
 $chunks[] = clone $str;
 return $chunks;
 }
 public function startsWith($prefix) : bool
 {
 if ($prefix instanceof AbstractString) {
 $prefix = $prefix->string;
 } elseif (\is_array($prefix) || $prefix instanceof \Traversable) {
 return parent::startsWith($prefix);
 } else {
 $prefix = (string) $prefix;
 }
 $form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
 \normalizer_is_normalized($prefix, $form) ?: ($prefix = \normalizer_normalize($prefix, $form));
 if ('' === $prefix || \false === $prefix) {
 return \false;
 }
 if ($this->ignoreCase) {
 return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES), $prefix, 0, 'UTF-8');
 }
 return $prefix === \grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES);
 }
 public function __wakeup()
 {
 if (!\is_string($this->string)) {
 throw new \BadMethodCallException('Cannot unserialize ' . __CLASS__);
 }
 \normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
 }
 public function __clone()
 {
 if (null === $this->ignoreCase) {
 \normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
 }
 $this->ignoreCase = \false;
 }
}

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