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- improvement allow closures as callback at $smarty->registerFilter() #…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| <?php | ||
|
|
||
| /** | ||
| * Smarty Extension Filter | ||
| * | ||
| * Register filter methods | ||
| * Load filter method | ||
| * | ||
| * @package Smarty | ||
| * @subpackage PluginsInternal | ||
| * @author Uwe Tews | ||
| */ | ||
| class Smarty_Internal_Extension_Filter | ||
| { | ||
| /** | ||
| * Valid filter types | ||
| * | ||
| * @var array | ||
| */ | ||
| static $filterTypes = array('pre' => true, 'post' => true, 'output' => true, 'variable' => true); | ||
|
|
||
| /** | ||
| * Registers a filter function | ||
| * | ||
| * @param \Smarty_Internal_Template|\Smarty $obj | ||
| * @param string $type filter type | ||
| * @param callback $callback | ||
| * @param string|null $name optional filter name | ||
| * | ||
| * @throws \SmartyException | ||
| */ | ||
| static function registerFilter($obj, $type, $callback, $name) | ||
| { | ||
| self::_checkFilterType($type); | ||
| $name = isset($name) ? $name : self::_getFilterName($callback); | ||
| if (!is_callable($callback)) { | ||
| throw new SmartyException("{$type}filter \"{$name}\" not callable"); | ||
| } | ||
| $smarty = isset($obj->smarty) ? $obj->smarty : $obj; | ||
| $smarty->registered_filters[$type][$name] = $callback; | ||
| } | ||
|
|
||
| /** | ||
| * Unregisters a filter function | ||
| * | ||
| * @param \Smarty_Internal_Template|\Smarty $obj | ||
| * @param string $type filter type | ||
| * @param callback|string $callback | ||
| * | ||
| */ | ||
| static function unregisterFilter($obj, $type, $callback) | ||
| { | ||
| self::_checkFilterType($type); | ||
| $smarty = isset($obj->smarty) ? $obj->smarty : $obj; | ||
| if (isset($smarty->registered_filters[$type])) { | ||
| $name = is_string($callback) ? $callback : self::_getFilterName($callback); | ||
| if (isset($smarty->registered_filters[$type][$name])) { | ||
| unset($smarty->registered_filters[$type][$name]); | ||
| if (empty($smarty->registered_filters[$type])) { | ||
| unset($smarty->registered_filters[$type]); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * load a filter of specified type and name | ||
| * | ||
| * @param \Smarty_Internal_Template|\Smarty $obj | ||
| * @param string $type filter type | ||
| * @param string $name filter name | ||
| * | ||
| * @return bool | ||
| * @throws SmartyException if filter could not be loaded | ||
| */ | ||
| static function loadFilter($obj, $type, $name) | ||
| { | ||
| self::_checkFilterType($type); | ||
| $smarty = isset($obj->smarty) ? $obj->smarty : $obj; | ||
| $_plugin = "smarty_{$type}filter_{$name}"; | ||
| $_filter_name = $_plugin; | ||
| if ($smarty->loadPlugin($_plugin)) { | ||
| if (class_exists($_plugin, false)) { | ||
| $_plugin = array($_plugin, 'execute'); | ||
| } | ||
| if (is_callable($_plugin)) { | ||
| $smarty->registered_filters[$type][$_filter_name] = $_plugin; | ||
| return true; | ||
| } | ||
| } | ||
| throw new SmartyException("{$type}filter \"{$name}\" not callable"); | ||
| } | ||
|
|
||
| /** | ||
| * unload a filter of specified type and name | ||
| * | ||
| * @param \Smarty_Internal_Template|\Smarty $obj | ||
| * @param string $type filter type | ||
| * @param string $name filter name | ||
| * | ||
| */ | ||
| static function unloadFilter($obj, $type, $name) | ||
| { | ||
| self::_checkFilterType($type); | ||
| $smarty = isset($obj->smarty) ? $obj->smarty : $obj; | ||
| if (isset($smarty->registered_filters[$type])) { | ||
| $_filter_name = "smarty_{$type}filter_{$name}"; | ||
| if (isset($smarty->registered_filters[$type][$_filter_name])) { | ||
| unset ($smarty->registered_filters[$type][$_filter_name]); | ||
| if (empty($smarty->registered_filters[$type])) { | ||
| unset($smarty->registered_filters[$type]); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Return internal filter name | ||
| * | ||
| * @param callback $function_name | ||
| * | ||
| * @return string internal filter name | ||
| */ | ||
| static function _getFilterName($function_name) | ||
| { | ||
| if (is_array($function_name)) { | ||
| $_class_name = (is_object($function_name[0]) ? get_class($function_name[0]) : $function_name[0]); | ||
|
|
||
| return $_class_name . '_' . $function_name[1]; | ||
| } elseif (is_string($function_name)) { | ||
| return $function_name; | ||
| } else { | ||
| return 'closure'; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Check if filter type is valid | ||
| * | ||
| * @param string $type | ||
| * | ||
| * @throws \SmartyException | ||
| */ | ||
| static function _checkFilterType($type) | ||
| { | ||
| if (!isset(self::$filterTypes[$type])) { | ||
| throw new SmartyException("Illegal filter type \"{$type}\""); | ||
| } | ||
| } | ||
| } |
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