Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\ClassLoader;
Chris@0: 
Chris@0: /**
Chris@0:  * A PSR-4 compatible class loader.
Chris@0:  *
Chris@0:  * See http://www.php-fig.org/psr/psr-4/
Chris@0:  *
Chris@0:  * @author Alexander M. Turek <me@derrabus.de>
Chris@0:  */
Chris@0: class Psr4ClassLoader
Chris@0: {
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      */
Chris@0:     private $prefixes = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $prefix
Chris@0:      * @param string $baseDir
Chris@0:      */
Chris@0:     public function addPrefix($prefix, $baseDir)
Chris@0:     {
Chris@0:         $prefix = trim($prefix, '\\').'\\';
Chris@0:         $baseDir = rtrim($baseDir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
Chris@0:         $this->prefixes[] = array($prefix, $baseDir);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $class
Chris@0:      *
Chris@0:      * @return string|null
Chris@0:      */
Chris@0:     public function findFile($class)
Chris@0:     {
Chris@0:         $class = ltrim($class, '\\');
Chris@0: 
Chris@0:         foreach ($this->prefixes as list($currentPrefix, $currentBaseDir)) {
Chris@0:             if (0 === strpos($class, $currentPrefix)) {
Chris@0:                 $classWithoutPrefix = substr($class, strlen($currentPrefix));
Chris@0:                 $file = $currentBaseDir.str_replace('\\', DIRECTORY_SEPARATOR, $classWithoutPrefix).'.php';
Chris@0:                 if (file_exists($file)) {
Chris@0:                     return $file;
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $class
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public function loadClass($class)
Chris@0:     {
Chris@0:         $file = $this->findFile($class);
Chris@0:         if (null !== $file) {
Chris@0:             require $file;
Chris@0: 
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@0:         return false;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Registers this instance as an autoloader.
Chris@0:      *
Chris@0:      * @param bool $prepend
Chris@0:      */
Chris@0:     public function register($prepend = false)
Chris@0:     {
Chris@0:         spl_autoload_register(array($this, 'loadClass'), true, $prepend);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Removes this instance from the registered autoloaders.
Chris@0:      */
Chris@0:     public function unregister()
Chris@0:     {
Chris@0:         spl_autoload_unregister(array($this, 'loadClass'));
Chris@0:     }
Chris@0: }