WEB-INF/lib/smarty/sysplugins/smarty_internal_filter.php

   1 <?php
   2
   3 /**
   4  * Smarty Internal Plugin Filter
   5  *
   6  * External Smarty filter methods
   7  *
   8  * @package Smarty
   9  * @author Uwe Tews
  10  */
  11
  12 /**
  13  * Class for filter methods
  14  */
  15 class Smarty_Internal_Filter {
  16
  17     function __construct($smarty)
  18     {
  19         $this->smarty = $smarty;
  20     }
  21     /**
  22      * Registers a filter function
  23      *
  24      * @param string $type filter type
  25      * @param callback $callback
  26      */
  27         public function registerFilter($type, $callback)
  28         {
  29                 $this->smarty->registered_filters[$type][$this->_get_filter_name($callback)] = $callback;
  30         }
  31
  32     /**
  33      * Unregisters a filter function
  34      *
  35      * @param string $type filter type
  36      * @param callback $callback
  37      */
  38         public function unregisterFilter($type, $callback)
  39         {
  40                 $name = $this->_get_filter_name($callback);
  41                 if(isset($this->smarty->registered_filters[$type][$name])) {
  42                 unset($this->smarty->registered_filters[$type][$name]);
  43                 }
  44         }
  45
  46
  47     /**
  48      * Return internal filter name
  49      *
  50      * @param callback $function_name
  51      */
  52     public function _get_filter_name($function_name)
  53     {
  54         if (is_array($function_name)) {
  55             $_class_name = (is_object($function_name[0]) ?
  56                 get_class($function_name[0]) : $function_name[0]);
  57             return $_class_name . '_' . $function_name[1];
  58         } else {
  59             return $function_name;
  60         }
  61     }
  62
  63
  64     /**
  65      * load a filter of specified type and name
  66      *
  67      * @param string $type filter type
  68      * @param string $name filter name
  69      * @return bool
  70      */
  71     function loadFilter($type, $name)
  72     {
  73         $_plugin = "smarty_{$type}filter_{$name}";
  74         $_filter_name = $_plugin;
  75         if ($this->smarty->loadPlugin($_plugin)) {
  76             if (class_exists($_plugin, false)) {
  77                 $_plugin = array($_plugin, 'execute');
  78             }
  79             if (is_callable($_plugin)) {
  80                 return $this->smarty->registered_filters[$type][$_filter_name] = $_plugin;
  81             }
  82         }
  83         throw new SmartyException("{$type}filter \"{$name}\" not callable");
  84         return false;
  85     }
  86
  87
  88 }
  89 ?>