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<?php
/**
*------------------------------------------------------------------------------
* iCagenda v3 by Jooml!C - Events Management Extension for Joomla! 2.5 / 3.x
*------------------------------------------------------------------------------
*
* @package LiveUpdate 2.1.5 - 2.2.1
* @copyright Copyright (c)2010-2013 Nicholas K. Dionysopoulos / AkeebaBackup.com
* @license GNU LGPLv3 or later <http://www.gnu.org/copyleft/lesser.html>
*
* @version 3.1.8 2013-08-30
* @since 1.2.6
*/
/**
* Specific PHP 5.3 min control - iCagenda
*/
defined('_JEXEC') or die();
/**
* Abstract class for the update parameters storage
* @author nicholas
*
*/
abstract class LiveUpdateStorage
{
/**
* @var JRegistry The update data registry
*/
protected $registry = null;
/**
* @var string The key prefix for the registry data
*/
protected $keyPrefix = 'update.';
/**
* Singleton implementation
*
* @param string $type Storage tyme (file, component)
* @param array $config Configuration array
*
* @return LiveUpdateStorage
*/
public static function getInstance($type, $config)
{
static $instances = array();
$sig = md5($type, serialize($config));
if (!array_key_exists($sig, $instances))
{
$className = 'LiveUpdateStorage' . ucfirst($type);
if (!class_exists($className))
{
if (version_compare(phpversion(), '5.3.0', '<')) {
require_once dirname(__FILE__).'/'.strtolower($type).'.php';
} else {
require_once __DIR__ . '/' . strtolower($type) . '.php';
}
}
$object = new $className($config);
$object->load($config);
$instances[$sig] = $object;
}
return $instances[$sig];
}
/**
* Set a value to the storage registry. Automatically encodes updatedata.
*
* @param string $key The key to set
* @param mixed $value The value of the key to set
*
* @return void
*/
public final function set($key, $value)
{
if ($key == 'updatedata')
{
if (function_exists('base64_encode') && function_exists('base64_decode'))
{
$value = base64_encode(serialize($value));
}
else
{
$value = serialize($value);
}
}
$this->registry->set($this->keyPrefix . $key, $value);
}
/**
* Read a value from the storage registry
*
* @param string $key The key to read
* @param mixed $default The default value of the key, if the key is not present
*
* @return mixed The value of the key
*/
public final function get($key, $default)
{
$value = $this->registry->get($this->keyPrefix . $key, $default);
if ($key == 'updatedata')
{
if (function_exists('base64_encode') && function_exists('base64_decode'))
{
$value = unserialize(base64_decode($value));
}
else
{
$value = unserialize($value);
}
}
return $value;
}
/**
* Save the contents of the registry to the appropriate storage
*
* @return void
*/
abstract public function save();
/**
* Load data from the storage
*
* @param array The configuration options
*
* @return void
*/
abstract public function load($config);
}