<?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\ClassLoader;

/**

 * A class loader that uses a mapping file to look up paths.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

class MapClassLoader

{

    private $map = array();

    /**

     * Constructor.

     *

     * @param array $map A map where keys are classes and values the absolute file path

     */

    public function __construct(array $map)

    {

        $this->map = $map;

    }

    /**

     * Registers this instance as an autoloader.

     *

     * @param Boolean $prepend Whether to prepend the autoloader or not

     */

    public function register($prepend = false)

    {

        spl_autoload_register(array($this, 'loadClass'), true, $prepend);

    }

    /**

     * Loads the given class or interface.

     *

     * @param string $class The name of the class

     */

    public function loadClass($class)

    {

        if ('\\' === $class[0]) {

            $class = substr($class, 1);

        }

        if (isset($this->map[$class])) {

            require $this->map[$class];

        }

    }

    /**

     * Finds the path to the file where the class is defined.

     *

     * @param string $class The name of the class

     *

     * @return string|null The path, if found

     */

    public function findFile($class)

    {

        if ('\\' === $class[0]) {

            $class = substr($class, 1);

        }

        if (isset($this->map[$class])) {

            return $this->map[$class];

        }

    }

}