1 files changed, 88 insertions, 0 deletions
diff --git a/include/smarty/libs/sysplugins/smarty_internal_method_registerfilter.php b/include/smarty/libs/sysplugins/smarty_internal_method_registerfilter.php
new file mode 100644
index 000000000..84b2c2630
--- /dev/null
+++ b/include/smarty/libs/sysplugins/smarty_internal_method_registerfilter.php
@@ -0,0 +1,88 @@
+<?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)
+    {
+        $smarty = isset($obj->smarty) ? $obj->smarty : $obj;
+        $this->_checkFilterType($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}\"");
+        }
+    }
+}
+\ No newline at end of file