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* symfony 5.4 (diff dev) * symfony 5.4 (working) * symfony 5.4 (update autoload) * symfony 5.4 (remove swiftmailer mailer implementation) * symfony 5.4 (php doc and split Global accessor class) ### Impacted packages: composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies
66 lines
1.7 KiB
PHP
66 lines
1.7 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\CssSelector\Parser\Tokenizer;
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/**
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* CSS selector tokenizer escaping applier.
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*
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* This component is a port of the Python cssselect library,
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
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*
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
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*
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* @internal
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*/
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class TokenizerEscaping
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{
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private $patterns;
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public function __construct(TokenizerPatterns $patterns)
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{
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$this->patterns = $patterns;
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}
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public function escapeUnicode(string $value): string
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{
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$value = $this->replaceUnicodeSequences($value);
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return preg_replace($this->patterns->getSimpleEscapePattern(), '$1', $value);
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}
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public function escapeUnicodeAndNewLine(string $value): string
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{
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$value = preg_replace($this->patterns->getNewLineEscapePattern(), '', $value);
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return $this->escapeUnicode($value);
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}
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private function replaceUnicodeSequences(string $value): string
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{
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return preg_replace_callback($this->patterns->getUnicodeEscapePattern(), function ($match) {
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$c = hexdec($match[1]);
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if (0x80 > $c %= 0x200000) {
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return \chr($c);
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}
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if (0x800 > $c) {
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return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
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}
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if (0x10000 > $c) {
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return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
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}
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return '';
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}, $value);
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}
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}
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