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Direktori : /home2/selectio/www/3-idiots/vendor/symfony/css-selector/Parser/Tokenizer/ |
Current File : /home2/selectio/www/3-idiots/vendor/symfony/css-selector/Parser/Tokenizer/TokenizerEscaping.php |
<?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\Component\CssSelector\Parser\Tokenizer; /** * CSS selector tokenizer escaping applier. * * This component is a port of the Python cssselect library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> * * @internal */ class TokenizerEscaping { private TokenizerPatterns $patterns; public function __construct(TokenizerPatterns $patterns) { $this->patterns = $patterns; } public function escapeUnicode(string $value): string { $value = $this->replaceUnicodeSequences($value); return preg_replace($this->patterns->getSimpleEscapePattern(), '$1', $value); } public function escapeUnicodeAndNewLine(string $value): string { $value = preg_replace($this->patterns->getNewLineEscapePattern(), '', $value); return $this->escapeUnicode($value); } private function replaceUnicodeSequences(string $value): string { return preg_replace_callback($this->patterns->getUnicodeEscapePattern(), function ($match) { $c = hexdec($match[1]); if (0x80 > $c %= 0x200000) { return \chr($c); } if (0x800 > $c) { return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F); } if (0x10000 > $c) { return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F); } return ''; }, $value); } }