1: <?php
 2: /**
 3:  * Smarty Internal Plugin Filter Handler
 4:  * Smarty filter handler class
 5:  *
 6:  * @package    Smarty
 7:  * @subpackage PluginsInternal
 8:  * @author     Uwe Tews
 9:  */
10: 
11: /**
12:  * Class for filter processing
13:  *
14:  * @package    Smarty
15:  * @subpackage PluginsInternal
16:  */
17: class Smarty_Internal_Filter_Handler
18: {
19:     /**
20:      * Run filters over content
21:      * The filters will be lazy loaded if required
22:      * class name format: Smarty_FilterType_FilterName
23:      * plugin filename format: filtertype.filtername.php
24:      * Smarty2 filter plugins could be used
25:      *
26:      * @param  string                   $type     the type of filter ('pre','post','output') which shall run
27:      * @param  string                   $content  the content which shall be processed by the filters
28:      * @param  Smarty_Internal_Template $template template object
29:      *
30:      * @throws SmartyException
31:      * @return string                   the filtered content
32:      */
33:     public static function runFilter($type, $content, Smarty_Internal_Template $template)
34:     {
35:         $output = $content;
36:         // loop over autoload filters of specified type
37:         if (!empty($template->smarty->autoload_filters[$type])) {
38:             foreach ((array) $template->smarty->autoload_filters[$type] as $name) {
39:                 $plugin_name = "Smarty_{$type}filter_{$name}";
40:                 if ($template->smarty->loadPlugin($plugin_name)) {
41:                     if (function_exists($plugin_name)) {
42:                         // use loaded Smarty2 style plugin
43:                         $output = $plugin_name($output, $template);
44:                     } elseif (class_exists($plugin_name, false)) {
45:                         // loaded class of filter plugin
46:                         $output = call_user_func(array($plugin_name, 'execute'), $output, $template);
47:                     }
48:                 } else {
49:                     // nothing found, throw exception
50:                     throw new SmartyException("Unable to load filter {$plugin_name}");
51:                 }
52:             }
53:         }
54:         // loop over registerd filters of specified type
55:         if (!empty($template->smarty->registered_filters[$type])) {
56:             foreach ($template->smarty->registered_filters[$type] as $key => $name) {
57:                 if (is_array($template->smarty->registered_filters[$type][$key])) {
58:                     $output = call_user_func($template->smarty->registered_filters[$type][$key], $output, $template);
59:                 } else {
60:                     $output = $template->smarty->registered_filters[$type][$key]($output, $template);
61:                 }
62:             }
63:         }
64:         // return filtered output
65:         return $output;
66:     }
67: }
68: