<?php
/**
* Autoloader
*
* @package Less
* @subpackage autoload
*/
class Less_Autoloader {
/**
* Registered flag
*
* @var boolean
*/
protected static $registered = false;
/**
* Library directory
*
* @var string
*/
protected static $libDir;
/**
* Register the autoloader in the spl autoloader
*
* @return void
* @throws Exception If there was an error in registration
*/
public static function register(){
if( self::$registered ){
return;
}
self::$libDir = dirname(__FILE__);
if(false === spl_autoload_register(array('Less_Autoloader', 'loadClass'))){
throw new Exception('Unable to register Less_Autoloader::loadClass as an autoloading method.');
}
self::$registered = true;
}
/**
* Unregisters the autoloader
*
* @return void
*/
public static function unregister(){
spl_autoload_unregister(array('Less_Autoloader', 'loadClass'));
self::$registered = false;
}
/**
* Loads the class
*
* @param string $className The class to load
*/
public static function loadClass($className){
// handle only package classes
if(strpos($className, 'Less_') !== 0){
return;
}
$className = substr($className,5);
$fileName = self::$libDir . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
if(file_exists($fileName)){
require $fileName;
return true;
}else{
throw new Exception('file not loadable '.$fileName);
}
}
}