<?php

/**

 * Smarty plugin

 * @package Smarty

 * @subpackage plugins

 */

/**

 * Smarty {cycle} function plugin

 *

 * Type:     function<br>

 * Name:     cycle<br>

 * Date:     May 3, 2002<br>

 * Purpose:  cycle through given values<br>

 * Input:

 *         - name = name of cycle (optional)

 *         - values = comma separated list of values to cycle,

 *                    or an array of values to cycle

 *                    (this can be left out for subsequent calls)

 *         - reset = boolean - resets given var to true

 *         - print = boolean - print var or not. default is true

 *         - advance = boolean - whether or not to advance the cycle

 *         - delimiter = the value delimiter, default is ","

 *         - assign = boolean, assigns to template var instead of

 *                    printed.

 *

 * Examples:<br>

 * <pre>

 * {cycle values="#eeeeee,#d0d0d0d"}

 * {cycle name=row values="one,two,three" reset=true}

 * {cycle name=row}

 * </pre>

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

 *       (Smarty online manual)

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

 * @author credit to Mark Priatel <mpriatel@rogers.com>

 * @author credit to Gerard <gerard@interfold.com>

 * @author credit to Jason Sweat <jsweat_php@yahoo.com>

 * @version  1.3

 * @param array

 * @param Smarty

 * @return string|null

 */

function smarty_function_cycle($params, &$smarty)

{

    static $cycle_vars;

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

    $print = (isset($params['print'])) ? (bool)$params['print'] : true;

    $advance = (isset($params['advance'])) ? (bool)$params['advance'] : true;

    $reset = (isset($params['reset'])) ? (bool)$params['reset'] : false;

    if (!in_array('values', array_keys($params))) {

        if(!isset($cycle_vars[$name]['values'])) {

            $smarty->trigger_error("cycle: missing 'values' parameter");

            return;

        }

    } else {

        if(isset($cycle_vars[$name]['values'])

            && $cycle_vars[$name]['values'] != $params['values'] ) {

            $cycle_vars[$name]['index'] = 0;

        }

        $cycle_vars[$name]['values'] = $params['values'];

    }

    $cycle_vars[$name]['delimiter'] = (isset($params['delimiter'])) ? $params['delimiter'] : ',';

    if(is_array($cycle_vars[$name]['values'])) {

        $cycle_array = $cycle_vars[$name]['values'];

    } else {

        $cycle_array = explode($cycle_vars[$name]['delimiter'],$cycle_vars[$name]['values']);

    }

    if(!isset($cycle_vars[$name]['index']) || $reset ) {

        $cycle_vars[$name]['index'] = 0;

    }

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

        $print = false;

        $smarty->assign($params['assign'], $cycle_array[$cycle_vars[$name]['index']]);

    }

    if($print) {

        $retval = $cycle_array[$cycle_vars[$name]['index']];

    } else {

        $retval = null;

    }

    if($advance) {

        if ( $cycle_vars[$name]['index'] >= count($cycle_array) -1 ) {

            $cycle_vars[$name]['index'] = 0;

        } else {

            $cycle_vars[$name]['index']++;

        }

    }

    return $retval;

}

/* vim: set expandtab: */

?>