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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Security\Core\Util;

/**
 * Class related functionality for objects that
 * might or might not be proxy objects at the moment.
 *
 * @see Doctrine\Common\Util\ClassUtils
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 * @author Johannes Schmitt <schmittjoh@gmail.com>
 */
class ClassUtils
{
    /**
     * Marker for Proxy class names.
     *
     * @var string
     */
    const MARKER = '__CG__';

    /**
     * Length of the proxy marker
     *
     * @var int
     */
    const MARKER_LENGTH = 6;

    /**
     * This class should not be instantiated
     */
    private function __construct() {}

    /**
     * Gets the real class name of a class name that could be a proxy.
     *
     * @param string|object
     * @return string
     */
    public static function getRealClass($object)
    {
        $class = is_object($object) ? get_class($object) : $object;

        if (false === $pos = strrpos($class, '\\'.self::MARKER.'\\')) {
            return $class;
        }

        return substr($class, $pos + self::MARKER_LENGTH + 2);
    }
}