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Current File : /var/www/web032/htdocs/cms/administrator/components/com_cache/models/cache.php
<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_cache
 *
 * @copyright   (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\Utilities\ArrayHelper;

/**
 * Cache Model
 *
 * @since  1.6
 */
class CacheModelCache extends JModelList
{
	/**
	 * An Array of CacheItems indexed by cache group ID
	 *
	 * @var Array
	 */
	protected $_data = array();

	/**
	 * Group total
	 *
	 * @var integer
	 */
	protected $_total = null;

	/**
	 * Pagination object
	 *
	 * @var object
	 */
	protected $_pagination = null;

	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 *
	 * @since   3.5
	 */
	public function __construct($config = array())
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array(
				'group',
				'count',
				'size',
				'client_id',
			);
		}

		parent::__construct($config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @param   string  $ordering   Field for ordering.
	 * @param   string  $direction  Direction of ordering.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function populateState($ordering = 'group', $direction = 'asc')
	{
		// Load the filter state.
		$this->setState('filter.search', $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search', '', 'string'));

		// Special case for client id.
		$clientId = (int) $this->getUserStateFromRequest($this->context . '.client_id', 'client_id', 0, 'int');
		$clientId = (!in_array($clientId, array (0, 1))) ? 0 : $clientId;
		$this->setState('client_id', $clientId);

		parent::populateState($ordering, $direction);
	}

	/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param   string  $id  A prefix for the store id.
	 *
	 * @return  string  A store id.
	 *
	 * @since   3.5
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id	.= ':' . $this->getState('client_id');
		$id	.= ':' . $this->getState('filter.search');

		return parent::getStoreId($id);
	}

	/**
	 * Method to get cache data
	 *
	 * @return array
	 */
	public function getData()
	{
		if (empty($this->_data))
		{
			try
			{
				$cache = $this->getCache();
				$data  = $cache->getAll();

				if ($data && count($data) > 0)
				{
					// Process filter by search term.
					if ($search = $this->getState('filter.search'))
					{
						foreach ($data as $key => $cacheItem)
						{
							if (stripos($cacheItem->group, $search) === false)
							{
								unset($data[$key]);
								continue;
							}
						}
					}

					// Process ordering.
					$listOrder = $this->getState('list.ordering', 'group');
					$listDirn  = $this->getState('list.direction', 'ASC');

					$this->_data = ArrayHelper::sortObjects($data, $listOrder, strtolower($listDirn) === 'desc' ? -1 : 1, true, true);

					// Process pagination.
					$limit = (int) $this->getState('list.limit', 25);

					if ($limit !== 0)
					{
						$start = (int) $this->getState('list.start', 0);

						return array_slice($this->_data, $start, $limit);
					}
				}
				else
				{
					$this->_data = array();
				}
			}
			catch (JCacheExceptionConnecting $exception)
			{
				$this->setError(JText::_('COM_CACHE_ERROR_CACHE_CONNECTION_FAILED'));
				$this->_data = array();
			}
			catch (JCacheExceptionUnsupported $exception)
			{
				$this->setError(JText::_('COM_CACHE_ERROR_CACHE_DRIVER_UNSUPPORTED'));
				$this->_data = array();
			}
		}

		return $this->_data;
	}

	/**
	 * Method to get cache instance.
	 *
	 * @return JCacheController
	 */
	public function getCache($clientId = null)
	{
		$conf = JFactory::getConfig();

		if (is_null($clientId))
		{
			$clientId = $this->getState('client_id');
		}

		$options = array(
			'defaultgroup' => '',
			'storage'      => $conf->get('cache_handler', ''),
			'caching'      => true,
			'cachebase'    => (int) $clientId === 1 ? JPATH_ADMINISTRATOR . '/cache' : $conf->get('cache_path', JPATH_SITE . '/cache')
		);

		return JCache::getInstance('', $options);
	}

	/**
	 * Method to get client data.
	 *
	 * @return array
	 *
	 * @deprecated  4.0  No replacement.
	 */
	public function getClient()
	{
		return JApplicationHelper::getClientInfo($this->getState('client_id', 0));
	}

	/**
	 * Get the number of current Cache Groups.
	 *
	 * @return  integer
	 */
	public function getTotal()
	{
		if (empty($this->_total))
		{
			$this->_total = count($this->getData());
		}

		return $this->_total;
	}

	/**
	 * Method to get a pagination object for the cache.
	 *
	 * @return  JPagination
	 */
	public function getPagination()
	{
		if (empty($this->_pagination))
		{
			$this->_pagination = new JPagination($this->getTotal(), $this->getState('list.start'), $this->getState('list.limit'));
		}

		return $this->_pagination;
	}

	/**
	 * Clean out a cache group as named by param.
	 * If no param is passed clean all cache groups.
	 *
	 * @param   string  $group  Cache group name.
	 *
	 * @return  boolean  True on success, false otherwise
	 */
	public function clean($group = '')
	{
		try
		{
			$this->getCache()->clean($group);
		}
		catch (JCacheExceptionConnecting $exception)
		{
			return false;
		}
		catch (JCacheExceptionUnsupported $exception)
		{
			return false;
		}

		Factory::getApplication()->triggerEvent('onAfterPurge', array($group));

		return true;
	}

	/**
	 * Purge an array of cache groups.
	 *
	 * @param   array  $array  Array of cache group names.
	 *
	 * @return  array  Array with errors, if they exist.
	 */
	public function cleanlist($array)
	{
		$errors = array();

		foreach ($array as $group)
		{
			if (!$this->clean($group))
			{
				$errors[] = $group;
			}
		}

		return $errors;
	}

	/**
	 * Purge all cache items.
	 *
	 * @return  boolean  True if successful; false otherwise.
	 */
	public function purge()
	{
		try
		{
			JFactory::getCache('')->gc();
		}
		catch (JCacheExceptionConnecting $exception)
		{
			return false;
		}
		catch (JCacheExceptionUnsupported $exception)
		{
			return false;
		}

		Factory::getApplication()->triggerEvent('onAfterPurge', array());

		return true;
	}
}

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