friendship ended with social-app. php is my new best friend
veryroundbird.house
1<?php
2
3/*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12namespace Symfony\Component\CssSelector\Parser\Tokenizer;
13
14/**
15 * CSS selector tokenizer escaping applier.
16 *
17 * This component is a port of the Python cssselect library,
18 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
19 *
20 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
21 *
22 * @internal
23 */
24class TokenizerEscaping
25{
26 public function __construct(
27 private TokenizerPatterns $patterns,
28 ) {
29 }
30
31 public function escapeUnicode(string $value): string
32 {
33 $value = $this->replaceUnicodeSequences($value);
34
35 return preg_replace($this->patterns->getSimpleEscapePattern(), '$1', $value);
36 }
37
38 public function escapeUnicodeAndNewLine(string $value): string
39 {
40 $value = preg_replace($this->patterns->getNewLineEscapePattern(), '', $value);
41
42 return $this->escapeUnicode($value);
43 }
44
45 private function replaceUnicodeSequences(string $value): string
46 {
47 return preg_replace_callback($this->patterns->getUnicodeEscapePattern(), function ($match) {
48 $c = hexdec($match[1]);
49
50 if (0x80 > $c %= 0x200000) {
51 return \chr($c);
52 }
53 if (0x800 > $c) {
54 return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
55 }
56 if (0x10000 > $c) {
57 return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
58 }
59
60 return '';
61 }, $value);
62 }
63}