/**
* Smarty - HTML Purifier block plugin
*
* File: block.purify.php<br>
* Type: block<br>
* Name: purify<br>
* Date: Oct 20, 2010<br>
* Purpose: Purify template output.<br>
* Install: Drop into the plugin directory, call
* <code>{purify}HTML fragment{/purify}</code>
* from template.
*
* @param array $params
* <pre>
* Params: assign: string (null)
* </pre>
* @param string $content
* @param Smarty
* @return string purified content
*/
function smarty_block_purify($params, $content, &$smarty)
{
if (is_null($content))
{
return;
}
$assign = null;
foreach ($params as $_key => $_val)
{
switch ($_key)
{
case 'assign':
$$_key = (string)$_val;
break;
default:
$smarty->trigger_error("purify: unknown attribute '$_key'");
}
}
$purifier = Piwik_HTMLPurifier::getInstance();
$output = $purifier->purify($content);
return $assign ? $smarty->assign($assign, $output) : $output;
}
/**
* Returns the singleton HTMLPurifier or a mock object
*
* @return HTMLPurifier|Piwik_HTMLPurifier
*/
public static function getInstance()
{
if (self::$instance == null) {
if (file_exists(PIWIK_INCLUDE_PATH . '/libs/HTMLPurifier.php')) {
if (!class_exists('HTMLPurifier_Bootstrap', false)) {
HTMLPurifier_Bootstrap::registerAutoload();
}
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.SerializerPath', PIWIK_USER_PATH . '/tmp/purifier');
self::$instance = new HTMLPurifier($config);
} else {
$c = __CLASS__;
self::$instance = new $c();
}
}
return self::$instance;
}
