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<?php
/**
* Kronolith_Driver:: defines an API for implementing storage backends
* for Kronolith.
*
* $Horde: kronolith/lib/Driver.php,v 1.8.2.2 2003/04/04 19:23:59 chuck Exp $
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @version $Revision: 1.8.2.2 $
* @since Kronolith 0.1
* @package kronolith
*/
class Kronolith_Driver {
/**
* A hash containing any parameters for the current driver.
*
* @var array $_params
*/
var $_params = array();
/**
* The current calendar.
*
* @var string $_calendar
*/
var $_calendar;
/**
* Constructor - just store the $params in our newly-created
* object. All other work is done by open().
*
* @param optional array $params Any parameters needed for this driver.
*/
function Kronolith_Driver($params = array())
{
$this->_params = $params;
}
/**
* Get the currently open calendar.
*
* @return string The current calendar name.
*/
function getCalendar()
{
return $this->_calendar;
}
/**
* Attempts to return a concrete Kronolith_Driver instance based
* on $driver.
*
* @param $driver The type of concrete Kronolith_Driver subclass to return.
* This is based on the calendar driver ($driver). The
* code is dynamically included.
*
* @param $params (optional) A hash containing any additional
* configuration or connection parameters a subclass
* might need.
*
* @return The newly created concrete Kronolith_Driver instance, or false
* on error.
*/
function &factory($driver, $params = array())
{
$driver = strtolower(basename($driver));
include_once dirname(__FILE__) . '/Driver/' . $driver . '.php';
$class = 'Kronolith_Driver_' . $driver;
if (class_exists($class)) {
return new $class($params);
} else {
Horde::fatal(new PEAR_Error(sprintf(_("Unable to load the definition of %s."), $class)), __FILE__, __LINE__);
}
}
}
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