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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\CssSelector\Parser\Handler;
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13
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14 use Symfony\Component\CssSelector\Exception\InternalErrorException;
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15 use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
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16 use Symfony\Component\CssSelector\Parser\Reader;
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17 use Symfony\Component\CssSelector\Parser\Token;
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18 use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
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19 use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
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20 use Symfony\Component\CssSelector\Parser\TokenStream;
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21
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22 /**
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23 * CSS selector comment handler.
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24 *
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25 * This component is a port of the Python cssselect library,
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26 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
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27 *
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28 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
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29 *
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30 * @internal
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31 */
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32 class StringHandler implements HandlerInterface
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33 {
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34 private $patterns;
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35 private $escaping;
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36
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37 public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
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38 {
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39 $this->patterns = $patterns;
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40 $this->escaping = $escaping;
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41 }
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42
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43 /**
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44 * {@inheritdoc}
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45 */
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46 public function handle(Reader $reader, TokenStream $stream)
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47 {
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48 $quote = $reader->getSubstring(1);
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49
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50 if (!\in_array($quote, ["'", '"'])) {
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51 return false;
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52 }
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53
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54 $reader->moveForward(1);
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55 $match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
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56
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57 if (!$match) {
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58 throw new InternalErrorException(sprintf('Should have found at least an empty match at %s.', $reader->getPosition()));
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59 }
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60
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61 // check unclosed strings
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62 if (\strlen($match[0]) === $reader->getRemainingLength()) {
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63 throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
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64 }
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65
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66 // check quotes pairs validity
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67 if ($quote !== $reader->getSubstring(1, \strlen($match[0]))) {
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68 throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
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69 }
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70
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71 $string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
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72 $stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
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73 $reader->moveForward(\strlen($match[0]) + 1);
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74
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75 return true;
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76 }
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77 }
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