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<?php class Autoloader { private $directory; private $prefix; private $prefixLength; /** * @param string $baseDirectory Base directory where the source files are located. */ public function __construct($baseDirectory = __DIR__) { $this->directory = $baseDirectory; $this->prefix = __NAMESPACE__ . '\\'; $this->prefixLength = strlen($this->prefix); } /** * Registers the autoloader class with the PHP SPL autoloader. * * @param boolean $prepend Prepend the autoloader on the stack instead of appending it. */ public static function register($prepend = false) { spl_autoload_register(array(new self, 'autoload'), true, $prepend); } /** * Loads a class from a file using its fully qualified name. * * @param string $className Fully qualified name of a class. */ public function autoload($className) { if (0 === strpos($className, $this->prefix)) { $parts = explode('\\', substr($className, $this->prefixLength)); $filepath = $this->directory.DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $parts).'.php'; if (is_file($filepath)) { require($filepath); } } } }