<?php
/**
 * Akeeba Engine
 * The modular PHP5 site backup engine
 * @copyright Copyright (c)2009-2011 Nicholas K. Dionysopoulos
 * @license GNU GPL version 3 or, at your option, any later version
 * @package akeebaengine
 * @version $Id: dateconditional.php 410 2011-01-24 11:29:01Z nikosdion $
 */

// Protection against direct access
defined('AKEEBAENGINE') or die('Restricted access');

/**
 * Date conditional filter
 * 
 * It will only backup files modified after a specific date and time
 */
class AEFilterStackDateconditional extends AEAbstractFilter
{
	function __construct()
	{
		$this->object	= 'file';
		$this->subtype	= 'all';
		$this->method	= 'api';
	}

	protected function is_excluded_by_api($test, $root)
	{
		static $from_datetime;

		$config =& AEFactory::getConfiguration();
		if(is_null($from_datetime) && $filter_switch)
		{
			$user_setting = $config->get('core.filters.dateconditional.start');
			$from_datetime = strtotime($user_setting);
		}
		
		// Get the filesystem path for $root
		$fsroot = $config->get('volatile.filesystem.current_root','');
		$ds = ($fsroot == '') || ($fsroot == '/') ? '' : DS;
		$filename = $fsroot.$ds.$test;

		// Get the timestamp of the file
		$timestamp = @filemtime($filename);

		// If we could not get this information, include the file in the archive
		if($timestamp === false) return false;

		// Compare it with the user-defined minimum timestamp and exclude if it's older than that
		if($timestamp <= $from_datetime) {
			return true;
		}

		// No match? Just include the file!
		return false;
	}

}