<?php // -*- mode:php; tab-width:4; indent-tabs-mode:t; c-basic-offset:4; -*-
#CMS - CMS Made Simple
#(c)2004-2007 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.org
#
#This program is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#$Id$
 
/**
 * Wrapper class around Cache:Lite for caching full pages and function output.
 *
 * @author Ted Kulp
 * @since 2.0
 * @version $Revision$
 * @modifiedby $LastChangedBy$
 * @lastmodified $Date$
 * @license GPL
 **/
class CmsCache extends CmsObject
{
  static private $instances = null;
  private $cache = null;
  
  function __construct($type = 'function')
  {
    parent::__construct();
 
    // Set a few options
    $options = array(
        'cacheDir' => cms_join_path(ROOT_DIR, 'tmp', 'cache/'),
        'lifeTime' => 300
    );
 
    if ($type == 'function')
    {
      //if (!CmsConfig::get('function_caching') || CmsConfig::get('debug'))
      if (!CmsConfig::get('function_caching'))
        $options['caching'] = false;
 
      require_once(cms_join_path(ROOT_DIR, 'lib', 'pear', 'cache', 'lite', 'Function.php'));
      $this->cache = new Cache_Lite_Function($options);
    }
    else
    {
      require_once(cms_join_path(ROOT_DIR, 'lib', 'pear', 'cache', 'lite', 'Function.php'));
      $this->cache = new Cache_Lite($options);
    }
  }
  
  public static function get_instance($type = 'function')
  {
    if (self::$instances == null)
    {
      self::$instances = array();
    }
 
    if (empty(self::$instances[$type]))
    {
      self::$instances[$type] = new CmsCache($type);
    }
 
    return self::$instances[$type];
  }
  
  public function get($id, $group = 'default', $doNotTestCacheValidity = FALSE)
  {
    return $this->cache->get($id, $group, $doNotTestCacheValidity);
  }
  
  public function save($data, $id = NULL, $group = 'default')
  {
    return $this->cache->save($data, $id, $group);
  }
  
  public function call()
  {
    $args = func_get_args();
    return call_user_func_array(array($this->cache, 'call'), $args);
  }
  
  public function drop()
  {
    $args = func_get_args();
    return call_user_func_array(array($this->cache, 'drop'), $args);
  }
  
  public function clean($group = FALSE, $mode = 'ingroup')
  {
    CmsContentOperations::clear_cache();
    return $this->clean($group, $mode);
  }
  
  static public function clear($group = FALSE, $mode = 'ingroup')
  {
    return self::get_instance()->clean($group, $mode);
  }
}
 
# vim:ts=4 sw=4 noet
?>