<?php
/**
* gTemplate Plugins
*
* @package gTemplate
* @subpackage Plugins
*/
/**
* gTemplate {cycle} function plugin
*
* Type: function<br>
* Name: cycle<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>
*
* @version 1.0
* @author Tamas David (G-Lex) <glex at mittudomain.info>
* @link https://github.com/glex86/g-template-php G-Template Engine on Github
*
* @internal Some source codes are taken from Smarty
* @internal author Monte Ohrt <monte at ohrt dot com>
* @internal author credit to Mark Priatel <mpriatel@rogers.com>
* @internal author credit to Gerard <gerard@interfold.com>
* @internal author credit to Jason Sweat <jsweat_php@yahoo.com>
* @internal internal link http://smarty.net Smarty
*/
function tpl_function_cycle($params, &$gTpl)
{
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'])) {
$gTpl->trigger_error("cycle: missing 'values' parameter");
return;
}
} else {
if(isset($cycle_vars[$name]['values'])
&& $cycle_vars[$name]['values'] != $params['values'] ) {
$cycle_vars[$name]['index'] = 0;
}
$cycle_vars[$name]['values'] = $params['values'];
}
if (isset($params['delimiter'])) {
$cycle_vars[$name]['delimiter'] = $params['delimiter'];
} elseif (!isset($cycle_vars[$name]['delimiter'])) {
$cycle_vars[$name]['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;
$gTpl->assign($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;
}
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