StringHandler.php in Zircon Profile 8.0

Namespace

Symfony\Component\CssSelector\Parser\Handler

File

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

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\CssSelector\Parser\Handler;

use Symfony\Component\CssSelector\Exception\InternalErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\TokenStream;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;

/**
 * CSS selector comment handler.
 *
 * 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 <[e-mail]>
 */
class StringHandler implements HandlerInterface {

  /**
   * @var TokenizerPatterns
   */
  private $patterns;

  /**
   * @var TokenizerEscaping
   */
  private $escaping;

  /**
   * @param TokenizerPatterns $patterns
   * @param TokenizerEscaping $escaping
   */
  public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping) {
    $this->patterns = $patterns;
    $this->escaping = $escaping;
  }

  /**
   * {@inheritdoc}
   */
  public function handle(Reader $reader, TokenStream $stream) {
    $quote = $reader
      ->getSubstring(1);
    if (!in_array($quote, array(
      "'",
      '"',
    ))) {
      return false;
    }
    $reader
      ->moveForward(1);
    $match = $reader
      ->findPattern($this->patterns
      ->getQuotedStringPattern($quote));
    if (!$match) {
      throw new InternalErrorException(sprintf('Should have found at least an empty match at %s.', $reader
        ->getPosition()));
    }

    // check unclosed strings
    if (strlen($match[0]) === $reader
      ->getRemainingLength()) {
      throw SyntaxErrorException::unclosedString($reader
        ->getPosition() - 1);
    }

    // check quotes pairs validity
    if ($quote !== $reader
      ->getSubstring(1, strlen($match[0]))) {
      throw SyntaxErrorException::unclosedString($reader
        ->getPosition() - 1);
    }
    $string = $this->escaping
      ->escapeUnicodeAndNewLine($match[0]);
    $stream
      ->push(new Token(Token::TYPE_STRING, $string, $reader
      ->getPosition()));
    $reader
      ->moveForward(strlen($match[0]) + 1);
    return true;
  }

}

Classes

Name	Description
StringHandler	CSS selector comment handler.