Goetas\Twital\EventSubscriber\FixTwigExpressionSubscriber

Complexity

Total Complexity

9

Size/Duplication

Total Lines	74
Duplicated Lines	0 %

Coupling/Cohesion

Dependencies

2

Test Coverage

Coverage

97.44%

Importance

Changes	3
Bugs	1	Features	1

4 Methods

Rating	Name	Duplication	Size	Complexity
A	getSubscribedEvents()	0	7	1
A	__construct()	0	9	1
B	addPlaceholder()	0	24	4
A	removePlaceholder()	0	18	3

<?php
namespace Goetas\Twital\EventSubscriber;

use Goetas\Twital\EventDispatcher\SourceEvent;

/**
 *
 * @author Martin Hasoň <martin.hason@gmail.com>
 *
 */
class FixTwigExpressionSubscriber extends AbstractTwigExpressionSubscriber
{
    public static function getSubscribedEvents()
    {
        return array(
            'compiler.pre_load' => array('addPlaceholder', 128),
            'compiler.post_dump' => array('removePlaceholder', -128),
        );
    }

    protected $placeholders = array();

    public function __construct($placeholder = array('twital', 'twital'), array $options = array())
    {
        parent::__construct($placeholder, $options);

        $this->regexes = array_merge($this->regexes, array(
            'placeholder' => '{( ?)('.preg_quote($placeholder[0]).'[a-z0-9]+?'.preg_quote($placeholder[1]).')}iu',
        ));
        $this->regexes['twig'] = '{(.?)('.substr($this->regexes['twig'], 1, -5).')}siuU';
    }

    /**
     *
     * @param SourceEvent $event
     */
    public function addPlaceholder(SourceEvent $event)
    {
        $source = $event->getTemplate();
        $format = $this->placeholderFormat;
        $placeholders = array();

        $source = preg_replace_callback($this->regexes['twig'], function ($matches) use ($format, &$placeholders) {
            $startChar = $matches[1];
            $id = ('<' === $startChar || '/' === $startChar) ? $matches[2] : mt_rand();
            $placeholder = sprintf($format, md5($id));

            if (!in_array($startChar, array(' ', '<', '>', '/'), true)) {
                $placeholder = ' '.$placeholder;
            }

            $placeholders[$placeholder] = $matches[2];

            return $startChar.$placeholder;
        }, $source);

        $this->placeholders = $placeholders;

        $event->setTemplate($source);
    }

    /**
     *
     * @param SourceEvent $event
     */
    public function removePlaceholder(SourceEvent $event)
    {
        $source = $event->getTemplate();

        $placeholders = $this->placeholders;

        $source = preg_replace_callback($this->regexes['placeholder'], function($matches) use ($placeholders) {
            if (isset($placeholders[$matches[0]])) {
                return $placeholders[$matches[0]];
            } elseif (isset($placeholders[$matches[2]])) {
                return $matches[1].$placeholders[$matches[2]];
            } else {
                return $matches[0];
            }
        }, $source);

        $event->setTemplate($source);
    }
}