library/Smarty/libs/sysplugins/smarty_internal_filter_handler.php

   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 }