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<?php
/**
* Akeeba Engine
* The modular PHP5 site backup engine
* @copyright Copyright (c)2009-2014 Nicholas K. Dionysopoulos
* @license GNU GPL version 3 or, at your option, any later version
* @package akeebaengine
*
*/
// Protection against direct access
defined('AKEEBAENGINE') or die();
global $Akeeba_Class_Map;
// Class map
if (empty($Akeeba_Class_Map))
{
$Akeeba_Class_Map = array(
'AECoreDomain' => 'core' . DIRECTORY_SEPARATOR . 'domain',
'AECore' => 'core',
'AEUtil' => 'utils',
'AEAbstract' => 'abstract',
'AEPlatform' => 'platform',
'AEFilterStackPlatform' => 'filters' . DIRECTORY_SEPARATOR . 'stack',
'AEFilterPlatform' => 'filters',
'AEDriverPlatform' => 'drivers',
'AEArchiver' => 'engines' . DIRECTORY_SEPARATOR . 'archiver',
'AEDumpNative' => 'engines' . DIRECTORY_SEPARATOR . 'dump' . DIRECTORY_SEPARATOR . 'native',
'AEDumpReverse' => 'engines' . DIRECTORY_SEPARATOR . 'dump' . DIRECTORY_SEPARATOR . 'reverse',
'AEDump' => 'engines' . DIRECTORY_SEPARATOR . 'dump',
'AEFinalization' => 'engines' . DIRECTORY_SEPARATOR . 'finalization',
'AEScan' => 'engines' . DIRECTORY_SEPARATOR . 'scan',
'AEWriter' => 'engines' . DIRECTORY_SEPARATOR . 'writer',
'AEPostproc' => 'engines' . DIRECTORY_SEPARATOR . 'proc',
'AEFilterStack' => 'filters' . DIRECTORY_SEPARATOR . 'stack',
'AEFilter' => 'filters',
'AEDriver' => 'drivers',
'AEQuery' => 'drivers' . DIRECTORY_SEPARATOR . 'query',
'AEQueryPlatform' => 'drivers' . DIRECTORY_SEPARATOR . 'query',
);
}
/**
* Loads the $class from a file in the directory $path, if and only if
* the class name starts with $prefix. Will also try the plugins path
* if the class is not present in the regular location.
*
* @param string $class The class name
* @param string $prefix The prefix to test
* @param string $path The path to load the class from
*
* @return boolean True if we loaded the class
*/
function LoadIfPrefix($class, $prefix, $path)
{
// Find the root path of Akeeba's installation. Static so that we can save some CPU time.
static $root;
static $platformDirs = array();
if (empty($root))
{
if (defined('AKEEBAROOT'))
{
$root = AKEEBAROOT;
}
else
{
$root = dirname(__FILE__);
}
}
if (empty($platformDirs))
{
$platformDirs = AEPlatform::getInstance()->getPlatformDirectories();
}
if (strpos($class, $prefix) === 0)
{
$filename = strtolower(substr($class, strlen($prefix))) . '.php';
// Try the plugins path
$filePath = $root . DIRECTORY_SEPARATOR . 'plugins' . DIRECTORY_SEPARATOR . $path . DIRECTORY_SEPARATOR . $filename;
if (file_exists($filePath))
{
require $filePath;
if (class_exists($class, false))
{
return true;
}
}
// Try the platform overrides
foreach ($platformDirs as $dir)
{
$filePath = $dir . '/' . $path . '/' . $filename;
if (file_exists($filePath))
{
require $filePath;
if (class_exists($class, false))
{
return true;
}
}
}
// Try the regular path
$filePath = $root . DIRECTORY_SEPARATOR . $path . DIRECTORY_SEPARATOR . $filename;
if (file_exists($filePath))
{
require $filePath;
if (class_exists($class, false))
{
return true;
}
}
}
return false;
}
/**
* PHP5 class autoloader for all of Akeeba's classes
*
* @param string $class_name The class name to load
*/
function AEAutoloader($class_name)
{
global $Akeeba_Class_Map;
// We can only handle AE* class names
if (substr($class_name, 0, 2) != 'AE')
{
return;
}
// The configuration class is a special case
if ($class_name == 'AEConfiguration')
{
if (defined('AKEEBAROOT'))
{
$root = AKEEBAROOT;
}
else
{
$root = dirname(__FILE__);
}
require_once $root . DIRECTORY_SEPARATOR . 'configuration.php';
}
// Try to load the class using the prefix-to-path mapping, also handles plugin path
foreach ($Akeeba_Class_Map as $prefix => $path)
{
if (LoadIfPrefix($class_name, $prefix, $path))
{
return true;
}
}
return false;
}