<?php

/**

 * Smarty plugin

 *

 * @package    Smarty

 * @subpackage PluginsFunction

 */

/**

 * Smarty {counter} function plugin

 * Type:     function<br>

 * Name:     counter<br>

 * Purpose:  print out a counter value

 *

 * @author Monte Ohrt <monte at ohrt dot com>

 * @link   http://www.smarty.net/manual/en/language.function.counter.php {counter}

 *         (Smarty online manual)

 *

 * @param array $params parameters

 * @param Smarty_Internal_Template $template template object

 *

 * @return string|null

 */

function smarty_function_counter($params, $template) {

    static $counters = array();

    $name = (isset($params['name'])) ? $params['name'] : 'default';

    if (!isset($counters[$name])) {

        $counters[$name] = array(

            'start' => 1,

            'skip' => 1,

            'direction' => 'up',

            'count' => 1

        );

    }

    $counter =& $counters[$name];

    if (isset($params['start'])) {

        $counter['start'] = $counter['count'] = (int)$params['start'];

    }

    if (!empty($params['assign'])) {

        $counter['assign'] = $params['assign'];

    }

    if (isset($counter['assign'])) {

        $template->assign($counter['assign'], $counter['count']);

    }

    if (isset($params['print'])) {

        $print = (bool)$params['print'];

    } else {

        $print = empty($counter['assign']);

    }

    if ($print) {

        $retval = $counter['count'];

    } else {

        $retval = null;

    }

    if (isset($params['skip'])) {

        $counter['skip'] = $params['skip'];

    }

    if (isset($params['direction'])) {

        $counter['direction'] = $params['direction'];

    }

    if ($counter['direction'] == "down") {

        $counter['count'] -= $counter['skip'];

    } else {

        $counter['count'] += $counter['skip'];

    }

    return $retval;

}