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<?php
/**
* @version $Id: format.php 14401 2010-01-26 14:10:00Z louis $
* @package Joomla.Framework
* @subpackage Registry
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* Abstract Format for JRegistry
*
* @abstract
* @package Joomla.Framework
* @subpackage Registry
* @since 1.5
*/
class JRegistryFormat extends JObject
{
/**
* Returns a reference to a Format object, only creating it
* if it doesn't already exist.
*
* @static
* @param string $format The format to load
* @return object Registry format handler
* @since 1.5
*/
function &getInstance($format)
{
static $instances;
if (!isset ($instances)) {
$instances = array ();
}
$format = strtolower(JFilterInput::clean($format, 'word'));
if (empty ($instances[$format]))
{
$class = 'JRegistryFormat'.$format;
if(!class_exists($class))
{
$path = dirname(__FILE__).DS.'format'.DS.$format.'.php';
if (file_exists($path)) {
require_once($path);
} else {
JError::raiseError(500,JText::_('Unable to load format class'));
}
}
$instances[$format] = new $class ();
}
return $instances[$format];
}
/**
* Converts an XML formatted string into an object
*
* @abstract
* @access public
* @param string $data Formatted string
* @return object Data Object
* @since 1.5
*/
function stringToObject( $data, $namespace='' ) {
return true;
}
/**
* Converts an object into a formatted string
*
* @abstract
* @access public
* @param object $object Data Source Object
* @return string Formatted string
* @since 1.5
*/
function objectToString( &$object ) {
}
}