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<?php
/**
* Smarty plugin
*
* @package Smarty
* @subpackage PluginsFunction
*/
/**
* Smarty {cycle} function plugin
* Type: function<br>
* Name: cycle<br>
* Date: May 3, 2002<br>
* Purpose: cycle through given values<br>
* Params:
* <pre>
* - 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.
* </pre>
* Examples:<br>
* <pre>
* {cycle values="#eeeeee,#d0d0d0d"}
* {cycle name=row values="one,two,three" reset=true}
* {cycle name=row}
* </pre>
*
* @link http://www.smarty.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 $params parameters
* @param Smarty_Internal_Template $template template object
*
* @return string|null
*/
function smarty_function_cycle($params, $template)
{
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) $params['reset'] : false;
if (!isset($params['values'])) {
if (!isset($cycle_vars[$name]['values'])) {
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;
$template->assign($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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