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- <?php
-
- /**
- * Smarty Method RegisterFilter
- *
- * Smarty::registerFilter() method
- *
- * @package Smarty
- * @subpackage PluginsInternal
- * @author Uwe Tews
- */
- class Smarty_Internal_Method_RegisterFilter
- {
- /**
- * Valid for Smarty and template object
- *
- * @var int
- */
- public $objMap = 3;
-
- /**
- * Valid filter types
- *
- * @var array
- */
- private $filterTypes = array('pre' => true, 'post' => true, 'output' => true, 'variable' => true);
-
- /**
- * Registers a filter function
- *
- * @api Smarty::registerFilter()
- *
- * @link http://www.smarty.net/docs/en/api.register.filter.tpl
- *
- * @param \Smarty_Internal_TemplateBase|\Smarty_Internal_Template|\Smarty $obj
- * @param string $type filter type
- * @param callback $callback
- * @param string|null $name optional filter name
- *
- * @return \Smarty|\Smarty_Internal_Template
- * @throws \SmartyException
- */
- public function registerFilter(Smarty_Internal_TemplateBase $obj, $type, $callback, $name = null)
- {
- $smarty = $obj->_getSmartyObj();
- $this->_checkFilterType($type);
- $name = isset($name) ? $name : $this->_getFilterName($callback);
- if (!is_callable($callback)) {
- throw new SmartyException("{$type}filter '{$name}' not callable");
- }
- $smarty->registered_filters[ $type ][ $name ] = $callback;
- return $obj;
- }
-
- /**
- * Return internal filter name
- *
- * @param callback $function_name
- *
- * @return string internal filter name
- */
- public function _getFilterName($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 $type
- *
- * @throws \SmartyException
- */
- public function _checkFilterType($type)
- {
- if (!isset($this->filterTypes[ $type ])) {
- throw new SmartyException("Illegal filter type '{$type}'");
- }
- }
- }
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