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<?php
/**
* @version 3.2.9 April 1, 2020
* @author RocketTheme http://www.rockettheme.com
* @copyright Copyright (C) 2007 - 2020 RocketTheme, LLC
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*
* derived from JoomlaRTCacheDriver with original copyright and license
* @copyright Copyright (C) 2005 - 2010 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
// No direct access
defined('ROKCOMMON') or die;
/**
* Abstract Format for RokCommon_Registry
*
* @abstract
* @package JoomlaRTCacheDriver.Framework
* @subpackage Registry
* @since 1.5
*/
abstract class RokCommon_Registry_Format
{
protected static $instances;
/**
* Returns a reference to a Format object, only creating it
* if it doesn't already exist.
*
* @param string The format to load
* @return object Registry format handler
* @throws RokCommon_Loader_Exception
* @since 1.5
*/
public static function getInstance($type)
{
// Initialize static variable.
if (!isset (self::$instances)) {
self::$instances = array ();
}
// Sanitize format type.
$type = strtoupper(preg_replace('/[^A-Z0-9_]/i', '', $type));
// Only instantiate the object if it doesn't already exist.
if (!isset(self::$instances[$type])) {
// Only load the file the class does not exist.
$class = 'RokCommon_Registry_Format_'.$type;
if (!class_exists($class)) {
throw new RokCommon_Loader_Exception('Unable to find Registry format ' . $type);
}
self::$instances[$type] = new $class();
}
return self::$instances[$type];
}
/**
* Converts an object into a formatted string.
*
* @param object Data Source Object.
* @param array An array of options for the formatter.
* @return string Formatted string.
* @since 1.5
*/
abstract public function objectToString($object, $options = null);
/**
* Converts a formatted string into an object.
*
* @param string Formatted string
* @param array An array of options for the formatter.
* @return object Data Object
* @since 1.5
*/
abstract public function stringToObject($data, $options = null);
}