AutoloaderC.php

<?php
/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <benjamin.woester@googlemail.com> wrote this file. As long as you retain
 * this notice you can do whatever you want with this stuff. If we meet some
 * day, and you think this stuff is worth it, you can buy me a beer in return.
 * Benjamin Wöster
 * ----------------------------------------------------------------------------
 */
/**
 * @author     Benjamin Wöster <benjamin.woester@googlemail.com>
 * @package    libIwParsers
 * @subpackage helpers
 */

/////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////

class AutoloaderC
{
    static private $_instance = null;
    private $_aPathes = array();

    ///////////////////////////////////////////////////////////////////////

    /**
     * Returns an instance of the factory.
     *
     * @return instance of the factory.
     */
    static private function getInstance()
    {
        if (self::$_instance === null) {
            self::$_instance = new AutoloaderC();
        }

        return self::$_instance;
    }

    ///////////////////////////////////////////////////////////////////////

    static public function addPath($pathName)
    {
        $instance = AutoloaderC::getInstance();

        if (is_dir($pathName)
            && in_array($pathName, $instance->_aPathes) === false
        ) {
            $instance->_aPathes[] = $pathName;
        }
    }

    ///////////////////////////////////////////////////////////////////////

    static public function load($className)
    {
        $instance = AutoloaderC::getInstance();

        foreach ($instance->_aPathes as $path) {
            if (file_exists($path . DIRECTORY_SEPARATOR . $className . '.php')) {
                //the load-method will only be called for classes that haven't
                //been defined. So there should be no need for require_once.
                //Hopefully this gives a bit more speed.
                require($path . DIRECTORY_SEPARATOR . $className . '.php');
                break;
            }
        }
    }

}