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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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