_test/vendor/symfony/css-selector/Parser/Handler/StringHandler.php

   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
  12 namespace Symfony\Component\CssSelector\Parser\Handler;
  13
  14 use Symfony\Component\CssSelector\Exception\InternalErrorException;
  15 use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
  16 use Symfony\Component\CssSelector\Parser\Reader;
  17 use Symfony\Component\CssSelector\Parser\Token;
  18 use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
  19 use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
  20 use Symfony\Component\CssSelector\Parser\TokenStream;
  21
  22 /**
  23  * CSS selector comment handler.
  24  *
  25  * This component is a port of the Python cssselect library,
  26  * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
  27  *
  28  * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
  29  *
  30  * @internal
  31  */
  32 class StringHandler implements HandlerInterface
  33 {
  34     private $patterns;
  35     private $escaping;
  36
  37     public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
  38     {
  39         $this->patterns = $patterns;
  40         $this->escaping = $escaping;
  41     }
  42
  43     /**
  44      * {@inheritdoc}
  45      */
  46     public function handle(Reader $reader, TokenStream $stream): bool
  47     {
  48         $quote = $reader->getSubstring(1);
  49
  50         if (!\in_array($quote, ["'", '"'])) {
  51             return false;
  52         }
  53
  54         $reader->moveForward(1);
  55         $match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
  56
  57         if (!$match) {
  58             throw new InternalErrorException(sprintf('Should have found at least an empty match at %d.', $reader->getPosition()));
  59         }
  60
  61         // check unclosed strings
  62         if (\strlen($match[0]) === $reader->getRemainingLength()) {
  63             throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
  64         }
  65
  66         // check quotes pairs validity
  67         if ($quote !== $reader->getSubstring(1, \strlen($match[0]))) {
  68             throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
  69         }
  70
  71         $string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
  72         $stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
  73         $reader->moveForward(\strlen($match[0]) + 1);
  74
  75         return true;
  76     }
  77 }