bug #385 update to smarty-3.1.28-dev (from Github)

1 files changed, 204 insertions, 699 deletions

diff --git a/include/smarty/libs/sysplugins/smarty_internal_templatebase.php b/include/smarty/libs/sysplugins/smarty_internal_templatebase.php
index 1cb9bb949..9b4953dee 100644
--- a/include/smarty/libs/sysplugins/smarty_internal_templatebase.php
+++ b/include/smarty/libs/sysplugins/smarty_internal_templatebase.php
@@ -1,811 +1,316 @@
 <?php
 /**
  * Smarty Internal Plugin Smarty Template  Base
+ * This file contains the basic shared methods for template handling
  *
- * This file contains the basic shared methodes for template handling
- *
- * @package Smarty
+ * @package    Smarty
  * @subpackage Template
- * @author Uwe Tews
+ * @author     Uwe Tews
  */
 
 /**
- * Class with shared template methodes
+ * Class with shared template methods
  *
- * @package Smarty
- * @subpackage Template
+ * @package      Smarty
+ * @subpackage   Template
+ *
+ * @property Smarty $smarty
+ * @method Smarty_Internal_TemplateBase setAutoloadFilters(mixed $filters, string $type = null)
+ * @method Smarty_Internal_TemplateBase addAutoloadFilters(mixed $filters, string $type = null)
+ * @method array getAutoloadFilters(string $type = null)
+ * @local_method Smarty_Internal_TemplateBase registerFilter(string $type, callback $callback, string $name = null)
+ * @method Smarty_Internal_TemplateBase unregisterFilter(string $type, mixed $callback)
+ * @method Smarty_Internal_TemplateBase unloadFilter(string $type, string $name)
+ * @method string getDebugTemplate()
+ * @method Smarty_Internal_TemplateBase setDebugTemplate(string $tpl_name)
+ * @method Smarty_Internal_TemplateBase setDefaultModifier(mixed $modifiers)
+ * @method Smarty_Internal_TemplateBase addDefaultModifier(mixed $modifiers)
+ * @method array getDefaultModifier()
+ * @method Smarty_Internal_TemplateBase registerDefaultPluginHandler(callback $callback)
+ * @method Smarty_Internal_TemplateBase registerResource(string $name, Smarty_Resource $resource_handler)
+ * @method Smarty_Internal_TemplateBase unregisterResource(string $name)
+ * @method Smarty_Internal_TemplateBase registerCacheResource(string $name, Smarty_CacheResource $resource_handler)
+ * @method Smarty_Internal_TemplateBase unregisterCacheResource(string $name)
+ * @method Smarty_Internal_TemplateBase unregisterPlugin(string $type, string $name)
+ * @method Smarty_Internal_TemplateBase unregisterObject(string $object_name)
+ * @method object getRegisteredObject(string $object_name)
+ * @method Smarty_Internal_TemplateBase registerClass(string $class_name, string $class_impl)
+ * @method Smarty_Internal_TemplateBase createData(Smarty_Internal_Data $parent = null, string $name = null)
+ * @method array getTags(mixed $template = null)
  */
-abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data {
-
+abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data
+{
     /**
-     * fetches a rendered Smarty template
+     * Set this if you want different sets of cache files for the same
+     * templates.
      *
-     * @param string $template          the resource handle of the template file or template object
-     * @param mixed  $cache_id          cache id to be used with this template
-     * @param mixed  $compile_id        compile id to be used with this template
-     * @param object $parent            next higher level of Smarty variables
-     * @param bool   $display           true: display, false: fetch
-     * @param bool   $merge_tpl_vars    if true parent template variables merged in to local scope
-     * @param bool   $no_output_filter  if true do not run output filter
-     * @return string rendered template output
+     * @var string
      */
-    public function fetch($template = null, $cache_id = null, $compile_id = null, $parent = null, $display = false, $merge_tpl_vars = true, $no_output_filter = false)
-    {
-        if ($template === null && $this instanceof $this->template_class) {
-            $template = $this;
-        }
-        if (!empty($cache_id) && is_object($cache_id)) {
-            $parent = $cache_id;
-            $cache_id = null;
-        }
-        if ($parent === null && ($this instanceof Smarty || is_string($template))) {
-            $parent = $this;
-        }
-        // create template object if necessary
-        $_template = ($template instanceof $this->template_class)
-        ? $template
-        : $this->smarty->createTemplate($template, $cache_id, $compile_id, $parent, false);
-        // if called by Smarty object make sure we use current caching status
-        if ($this instanceof Smarty) {
-            $_template->caching = $this->caching;
-        }
-        // merge all variable scopes into template
-        if ($merge_tpl_vars) {
-            // save local variables
-            $save_tpl_vars = $_template->tpl_vars;
-            $save_config_vars = $_template->config_vars;
-            $ptr_array = array($_template);
-            $ptr = $_template;
-            while (isset($ptr->parent)) {
-                $ptr_array[] = $ptr = $ptr->parent;
-            }
-            $ptr_array = array_reverse($ptr_array);
-            $parent_ptr = reset($ptr_array);
-            $tpl_vars = $parent_ptr->tpl_vars;
-            $config_vars = $parent_ptr->config_vars;
-            while ($parent_ptr = next($ptr_array)) {
-                if (!empty($parent_ptr->tpl_vars)) {
-                    $tpl_vars = array_merge($tpl_vars, $parent_ptr->tpl_vars);
-                }
-                if (!empty($parent_ptr->config_vars)) {
-                    $config_vars = array_merge($config_vars, $parent_ptr->config_vars);
-                }
-            }
-            if (!empty(Smarty::$global_tpl_vars)) {
-                $tpl_vars = array_merge(Smarty::$global_tpl_vars, $tpl_vars);
-            }
-            $_template->tpl_vars = $tpl_vars;
-            $_template->config_vars = $config_vars;
-        }
-        // dummy local smarty variable
-        if (!isset($_template->tpl_vars['smarty'])) {
-            $_template->tpl_vars['smarty'] = new Smarty_Variable;
-        }
-        if (isset($this->smarty->error_reporting)) {
-            $_smarty_old_error_level = error_reporting($this->smarty->error_reporting);
-        }
-        // check URL debugging control
-        if (!$this->smarty->debugging && $this->smarty->debugging_ctrl == 'URL') {
-            if (isset($_SERVER['QUERY_STRING'])) {
-                $_query_string = $_SERVER['QUERY_STRING'];
-            } else {
-                $_query_string = '';
-            }
-            if (false !== strpos($_query_string, $this->smarty->smarty_debug_id)) {
-                if (false !== strpos($_query_string, $this->smarty->smarty_debug_id . '=on')) {
-                    // enable debugging for this browser session
-                    setcookie('SMARTY_DEBUG', true);
-                    $this->smarty->debugging = true;
-                } elseif (false !== strpos($_query_string, $this->smarty->smarty_debug_id . '=off')) {
-                    // disable debugging for this browser session
-                    setcookie('SMARTY_DEBUG', false);
-                    $this->smarty->debugging = false;
-                } else {
-                    // enable debugging for this page
-                    $this->smarty->debugging = true;
-                }
-            } else {
-                if (isset($_COOKIE['SMARTY_DEBUG'])) {
-                    $this->smarty->debugging = true;
-                }
-            }
-        }
-        // must reset merge template date
-        $_template->smarty->merged_templates_func = array();
-        // get rendered template
-        // disable caching for evaluated code
-        if ($_template->source->recompiled) {
-            $_template->caching = false;
-        }
-        // checks if template exists
-        if (!$_template->source->exists) {
-            if ($_template->parent instanceof Smarty_Internal_Template) {
-                $parent_resource = " in '{$_template->parent->template_resource}'";
-            } else {
-                $parent_resource = '';
-            }
-            throw new SmartyException("Unable to load template {$_template->source->type} '{$_template->source->name}'{$parent_resource}");
-        }
-        // read from cache or render
-        if (!($_template->caching == Smarty::CACHING_LIFETIME_CURRENT || $_template->caching == Smarty::CACHING_LIFETIME_SAVED) || !$_template->cached->valid) {
-            // render template (not loaded and not in cache)
-            if (!$_template->source->uncompiled) {
-                $_smarty_tpl = $_template;
-                if ($_template->source->recompiled) {
-                    if ($this->smarty->debugging) {
-                        Smarty_Internal_Debug::start_compile($_template);
-                    }
-                    $code = $_template->compiler->compileTemplate($_template);
-                    if ($this->smarty->debugging) {
-                        Smarty_Internal_Debug::end_compile($_template);
-                    }
-                    if ($this->smarty->debugging) {
-                        Smarty_Internal_Debug::start_render($_template);
-                    }
-                    try {
-                        ob_start();
-                        eval("?>" . $code);
-                        unset($code);
-                    } catch (Exception $e) {
-                        ob_get_clean();
-                        throw $e;
-                    }
-                } else {
-                    if (!$_template->compiled->exists || ($_template->smarty->force_compile && !$_template->compiled->isCompiled)) {
-                        $_template->compileTemplateSource();
-                    }
-                    if ($this->smarty->debugging) {
-                        Smarty_Internal_Debug::start_render($_template);
-                    }
-                    if (!$_template->compiled->loaded) {
-                        include($_template->compiled->filepath);
-                        if ($_template->mustCompile) {
-                            // recompile and load again
-                            $_template->compileTemplateSource();
-                            include($_template->compiled->filepath);
-                        }
-                        $_template->compiled->loaded = true;
-                    } else {
-                        $_template->decodeProperties($_template->compiled->_properties, false);
-                    }
-                    try {
-                        ob_start();
-                        if (empty($_template->properties['unifunc']) || !is_callable($_template->properties['unifunc'])) {
-                            throw new SmartyException("Invalid compiled template for '{$_template->template_resource}'");
-                        }
-                        array_unshift($_template->_capture_stack,array());
-                        //
-                        // render compiled template
-                        //
-                        $_template->properties['unifunc']($_template);
-                        // any unclosed {capture} tags ?
-                        if (isset($_template->_capture_stack[0][0])) {
-                            $_template->capture_error();
-                        }
-                        array_shift($_template->_capture_stack);
-                    } catch (Exception $e) {
-                        ob_get_clean();
-                        throw $e;
-                    }
-                }
-            } else {
-                if ($_template->source->uncompiled) {
-                    if ($this->smarty->debugging) {
-                        Smarty_Internal_Debug::start_render($_template);
-                    }
-                    try {
-                        ob_start();
-                        $_template->source->renderUncompiled($_template);
-                    } catch (Exception $e) {
-                        ob_get_clean();
-                        throw $e;
-                    }
-                } else {
-                    throw new SmartyException("Resource '$_template->source->type' must have 'renderUncompiled' method");
-                }
-            }
-            $_output = ob_get_clean();
-            if (!$_template->source->recompiled && empty($_template->properties['file_dependency'][$_template->source->uid])) {
-                $_template->properties['file_dependency'][$_template->source->uid] = array($_template->source->filepath, $_template->source->timestamp, $_template->source->type);
-            }
-            if ($_template->parent instanceof Smarty_Internal_Template) {
-                $_template->parent->properties['file_dependency'] = array_merge($_template->parent->properties['file_dependency'], $_template->properties['file_dependency']);
-                foreach ($_template->required_plugins as $code => $tmp1) {
-                    foreach ($tmp1 as $name => $tmp) {
-                        foreach ($tmp as $type => $data) {
-                            $_template->parent->required_plugins[$code][$name][$type] = $data;
-                        }
-                    }
-                }
-            }
-            if ($this->smarty->debugging) {
-                Smarty_Internal_Debug::end_render($_template);
-            }
-            // write to cache when nessecary
-            if (!$_template->source->recompiled && ($_template->caching == Smarty::CACHING_LIFETIME_SAVED || $_template->caching == Smarty::CACHING_LIFETIME_CURRENT)) {
-                if ($this->smarty->debugging) {
-                    Smarty_Internal_Debug::start_cache($_template);
-                }
-                $_template->properties['has_nocache_code'] = false;
-                // get text between non-cached items
-                $cache_split = preg_split("!/\*%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*\/(.+?)/\*/%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*/!s", $_output);
-                // get non-cached items
-                preg_match_all("!/\*%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*\/(.+?)/\*/%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*/!s", $_output, $cache_parts);
-                $output = '';
-                // loop over items, stitch back together
-                foreach ($cache_split as $curr_idx => $curr_split) {
-                    // escape PHP tags in template content
-                    $output .= preg_replace('/(<%|%>|<\?php|<\?|\?>)/', '<?php echo \'$1\'; ?>', $curr_split);
-                    if (isset($cache_parts[0][$curr_idx])) {
-                        $_template->properties['has_nocache_code'] = true;
-                        // remove nocache tags from cache output
-                        $output .= preg_replace("!/\*/?%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*/!", '', $cache_parts[0][$curr_idx]);
-                    }
-                }
-                if (!$no_output_filter && !$_template->has_nocache_code && (isset($this->smarty->autoload_filters['output']) || isset($this->smarty->registered_filters['output']))) {
-                    $output = Smarty_Internal_Filter_Handler::runFilter('output', $output, $_template);
-                }
-                // rendering (must be done before writing cache file because of {function} nocache handling)
-                $_smarty_tpl = $_template;
-                try {
-                    ob_start();
-                    eval("?>" . $output);
-                    $_output = ob_get_clean();
-                } catch (Exception $e) {
-                    ob_get_clean();
-                    throw $e;
-                }
-                // write cache file content
-                $_template->writeCachedContent($output);
-                if ($this->smarty->debugging) {
-                    Smarty_Internal_Debug::end_cache($_template);
-                }
-            } else {
-                // var_dump('renderTemplate', $_template->has_nocache_code, $_template->template_resource, $_template->properties['nocache_hash'], $_template->parent->properties['nocache_hash'], $_output);
-                if (!empty($_template->properties['nocache_hash']) && !empty($_template->parent->properties['nocache_hash'])) {
-                    // replace nocache_hash
-                    $_output = str_replace("{$_template->properties['nocache_hash']}", $_template->parent->properties['nocache_hash'], $_output);
-                    $_template->parent->has_nocache_code = $_template->parent->has_nocache_code || $_template->has_nocache_code;
-                }
-            }
-        } else {
-            if ($this->smarty->debugging) {
-                Smarty_Internal_Debug::start_cache($_template);
-            }
-            try {
-                ob_start();
-                array_unshift($_template->_capture_stack,array());
-                //
-                // render cached template
-                //
-                $_template->properties['unifunc']($_template);
-                // any unclosed {capture} tags ?
-                if (isset($_template->_capture_stack[0][0])) {
-                    $_template->capture_error();
-                }
-                array_shift($_template->_capture_stack);
-                $_output = ob_get_clean();
-            } catch (Exception $e) {
-                ob_get_clean();
-                throw $e;
-            }
-            if ($this->smarty->debugging) {
-                Smarty_Internal_Debug::end_cache($_template);
-            }
-        }
-        if ((!$this->caching || $_template->has_nocache_code || $_template->source->recompiled) && !$no_output_filter && (isset($this->smarty->autoload_filters['output']) || isset($this->smarty->registered_filters['output']))) {
-            $_output = Smarty_Internal_Filter_Handler::runFilter('output', $_output, $_template);
-        }
-        if (isset($this->error_reporting)) {
-            error_reporting($_smarty_old_error_level);
-        }
-        // display or fetch
-        if ($display) {
-            if ($this->caching && $this->cache_modified_check) {
-                $_isCached = $_template->isCached() && !$_template->has_nocache_code;
-                $_last_modified_date = @substr($_SERVER['HTTP_IF_MODIFIED_SINCE'], 0, strpos($_SERVER['HTTP_IF_MODIFIED_SINCE'], 'GMT') + 3);
-                if ($_isCached && $_template->cached->timestamp <= strtotime($_last_modified_date)) {
-                    switch (PHP_SAPI) {
-                        case 'cgi':         // php-cgi < 5.3
-                        case 'cgi-fcgi':    // php-cgi >= 5.3
-                        case 'fpm-fcgi':    // php-fpm >= 5.3.3
-                        header('Status: 304 Not Modified');
-                        break;
-
-                        case 'cli':
-                        if (/* ^phpunit */!empty($_SERVER['SMARTY_PHPUNIT_DISABLE_HEADERS'])/* phpunit$ */) {
-                            $_SERVER['SMARTY_PHPUNIT_HEADERS'][] = '304 Not Modified';
-                        }
-                        break;
-
-                        default:
-                        header($_SERVER['SERVER_PROTOCOL'].' 304 Not Modified');
-                        break;
-                    }
-                } else {
-                    switch (PHP_SAPI) {
-                        case 'cli':
-                        if (/* ^phpunit */!empty($_SERVER['SMARTY_PHPUNIT_DISABLE_HEADERS'])/* phpunit$ */) {
-                            $_SERVER['SMARTY_PHPUNIT_HEADERS'][] = 'Last-Modified: ' . gmdate('D, d M Y H:i:s', $_template->cached->timestamp) . ' GMT';
-                        }
-                        break;
-
-                        default:
-                        header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $_template->cached->timestamp) . ' GMT');
-                        break;
-                    }
-                    echo $_output;
-                }
-            } else {
-                echo $_output;
-            }
-            // debug output
-            if ($this->smarty->debugging) {
-                Smarty_Internal_Debug::display_debug($this);
-            }
-            if ($merge_tpl_vars) {
-                // restore local variables
-                $_template->tpl_vars = $save_tpl_vars;
-                $_template->config_vars =  $save_config_vars;
-            }
-            return;
-        } else {
-            if ($merge_tpl_vars) {
-                // restore local variables
-                $_template->tpl_vars = $save_tpl_vars;
-                $_template->config_vars =  $save_config_vars;
-            }
-            // return fetched content
-            return $_output;
-        }
-    }
+    public $cache_id = null;
 
     /**
-     * displays a Smarty template
+     * Set this if you want different sets of compiled files for the same
+     * templates.
      *
-     * @param string $template   the resource handle of the template file or template object
-     * @param mixed  $cache_id   cache id to be used with this template
-     * @param mixed  $compile_id compile id to be used with this template
-     * @param object $parent     next higher level of Smarty variables
+     * @var string
      */
-    public function display($template = null, $cache_id = null, $compile_id = null, $parent = null)
-    {
-        // display template
-        $this->fetch($template, $cache_id, $compile_id, $parent, true);
-    }
+    public $compile_id = null;
 
     /**
-     * test if cache is valid
+     * caching enabled
      *
-     * @param string|object $template   the resource handle of the template file or template object
-     * @param mixed         $cache_id   cache id to be used with this template
-     * @param mixed         $compile_id compile id to be used with this template
-     * @param object        $parent     next higher level of Smarty variables
-     * @return boolean cache status
+     * @var boolean
      */
-    public function isCached($template = null, $cache_id = null, $compile_id = null, $parent = null)
-    {
-        if ($template === null && $this instanceof $this->template_class) {
-            return $this->cached->valid;
-        }
-        if (!($template instanceof $this->template_class)) {
-            if ($parent === null) {
-                $parent = $this;
-            }
-            $template = $this->smarty->createTemplate($template, $cache_id, $compile_id, $parent, false);
-        }
-        // return cache status of template
-        return $template->cached->valid;
-    }
+    public $caching = false;
 
     /**
-     * creates a data object
+     * cache lifetime in seconds
      *
-     * @param object $parent next higher level of Smarty variables
-     * @returns Smarty_Data data object
+     * @var integer
      */
-    public function createData($parent = null)
-    {
-        return new Smarty_Data($parent, $this);
-    }
+    public $cache_lifetime = 3600;
 
     /**
-     * Registers plugin to be used in templates
+     * universal cache
      *
-     * @param string   $type       plugin type
-     * @param string   $tag        name of template tag
-     * @param callback $callback   PHP callback to register
-     * @param boolean  $cacheable  if true (default) this fuction is cachable
-     * @param array    $cache_attr caching attributes if any
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException when the plugin tag is invalid
+     * @var array()
      */
-    public function registerPlugin($type, $tag, $callback, $cacheable = true, $cache_attr = null)
-    {
-        if (isset($this->smarty->registered_plugins[$type][$tag])) {
-            throw new SmartyException("Plugin tag \"{$tag}\" already registered");
-        } elseif (!is_callable($callback)) {
-            throw new SmartyException("Plugin \"{$tag}\" not callable");
-        } else {
-            $this->smarty->registered_plugins[$type][$tag] = array($callback, (bool) $cacheable, (array) $cache_attr);
-        }
-
-        return $this;
-    }
+    public $_cache = array();
 
     /**
-     * Unregister Plugin
+     * fetches a rendered Smarty template
      *
-     * @param string $type of plugin
-     * @param string $tag name of plugin
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     */
-    public function unregisterPlugin($type, $tag)
-    {
-        if (isset($this->smarty->registered_plugins[$type][$tag])) {
-            unset($this->smarty->registered_plugins[$type][$tag]);
-        }
-
-        return $this;
-    }
-
-    /**
-     * Registers a resource to fetch a template
+     * @param  string $template         the resource handle of the template file or template object
+     * @param  mixed  $cache_id         cache id to be used with this template
+     * @param  mixed  $compile_id       compile id to be used with this template
+     * @param  object $parent           next higher level of Smarty variables
      *
-     * @param string $type name of resource type
-     * @param Smarty_Resource|array $callback or instance of Smarty_Resource, or array of callbacks to handle resource (deprecated)
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
+     * @throws Exception
+     * @throws SmartyException
+     * @return string rendered template output
      */
-    public function registerResource($type, $callback)
+    public function fetch($template = null, $cache_id = null, $compile_id = null, $parent = null)
     {
-        $this->smarty->registered_resources[$type] = $callback instanceof Smarty_Resource ? $callback : array($callback, false);
-        return $this;
+        $result = $this->_execute($template, $cache_id, $compile_id, $parent, 0);
+        return $result === null ? ob_get_clean() : $result;
     }
 
     /**
-     * Unregisters a resource
+     * displays a Smarty template
      *
-     * @param string $type name of resource type
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
+     * @param string $template   the resource handle of the template file or template object
+     * @param mixed  $cache_id   cache id to be used with this template
+     * @param mixed  $compile_id compile id to be used with this template
+     * @param object $parent     next higher level of Smarty variables
      */
-    public function unregisterResource($type)
+    public function display($template = null, $cache_id = null, $compile_id = null, $parent = null)
     {
-        if (isset($this->smarty->registered_resources[$type])) {
-            unset($this->smarty->registered_resources[$type]);
-        }
-
-        return $this;
+        // display template
+        $this->_execute($template, $cache_id, $compile_id, $parent, 1);
     }
 
     /**
-     * Registers a cache resource to cache a template's output
+     * test if cache is valid
      *
-     * @param string               $type     name of cache resource type
-     * @param Smarty_CacheResource $callback instance of Smarty_CacheResource to handle output caching
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     */
-    public function registerCacheResource($type, Smarty_CacheResource $callback)
-    {
-        $this->smarty->registered_cache_resources[$type] = $callback;
-        return $this;
-    }
-
-    /**
-     * Unregisters a cache resource
+     * @api  Smarty::isCached()
+     * @link http://www.smarty.net/docs/en/api.is.cached.tpl
+     *
+     * @param  null|string|\Smarty_Internal_Template $template   the resource handle of the template file or template object
+     * @param  mixed                                 $cache_id   cache id to be used with this template
+     * @param  mixed                                 $compile_id compile id to be used with this template
+     * @param  object                                $parent     next higher level of Smarty variables
      *
-     * @param string $type name of cache resource type
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
+     * @return boolean       cache status
      */
-    public function unregisterCacheResource($type)
+    public function isCached($template = null, $cache_id = null, $compile_id = null, $parent = null)
     {
-        if (isset($this->smarty->registered_cache_resources[$type])) {
-            unset($this->smarty->registered_cache_resources[$type]);
-        }
-
-        return $this;
+        return $this->_execute($template, $cache_id, $compile_id, $parent, 2);
     }
 
     /**
-     * Registers object to be used in templates
+     * fetches a rendered Smarty template
      *
-     * @param string  $object        name of template object
-     * @param object  $object_impl   the referenced PHP object to register
-     * @param array   $allowed       list of allowed methods (empty = all)
-     * @param boolean $smarty_args   smarty argument format, else traditional
-     * @param array   $block_methods list of block-methods
-     * @param array $block_functs list of methods that are block format
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException if any of the methods in $allowed or $block_methods are invalid
+     * @param  string $template   the resource handle of the template file or template object
+     * @param  mixed  $cache_id   cache id to be used with this template
+     * @param  mixed  $compile_id compile id to be used with this template
+     * @param  object $parent     next higher level of Smarty variables
+     * @param  string $function  function type 0 = fetch,  1 = display, 2 = isCache
+     *
+     * @return mixed
+     * @throws \Exception
+     * @throws \SmartyException
      */
-    public function registerObject($object_name, $object_impl, $allowed = array(), $smarty_args = true, $block_methods = array())
+    private function _execute($template, $cache_id, $compile_id, $parent, $function)
     {
-        // test if allowed methodes callable
-        if (!empty($allowed)) {
-            foreach ((array) $allowed as $method) {
-                if (!is_callable(array($object_impl, $method))) {
-                    throw new SmartyException("Undefined method '$method' in registered object");
-                }
+        $smarty = $this->_objType == 1 ? $this : $this->smarty;
+        if ($template === null) {
+            if ($this->_objType != 2) {
+                throw new SmartyException($function . '():Missing \'$template\' parameter');
+            } else {
+                $template = clone $this;
+            }
+        } elseif (is_object($template)) {
+            if (!isset($template->_objType) || $template->_objType != 2) {
+                throw new SmartyException($function . '():Template object expected');
+            } else {
+                /* @var Smarty_Internal_Template $template */
+                $template = clone $template;
+            }
+        } else {
+            // get template object
+            /* @var Smarty_Internal_Template $template */
+            $template = $smarty->createTemplate($template, $cache_id, $compile_id, $parent, false);
+            if ($this->_objType == 1) {
+                // set caching in template object
+                $template->caching = $this->caching;
             }
         }
-        // test if block methodes callable
-        if (!empty($block_methods)) {
-            foreach ((array) $block_methods as $method) {
-                if (!is_callable(array($object_impl, $method))) {
-                    throw new SmartyException("Undefined method '$method' in registered object");
+        // fetch template content
+        $level = ob_get_level();
+        try {
+            $_smarty_old_error_level =
+                ($this->_objType == 1 && isset($smarty->error_reporting)) ? error_reporting($smarty->error_reporting) :
+                    null;
+            if ($function == 2) {
+                if ($template->caching) {
+                    // return cache status of template
+                    if (!isset($template->cached)) {
+                        $template->loadCached();
+                    }
+                    $result = $template->cached->isCached($template);
+                    $template->smarty->_cache['isCached'][$template->_getTemplateId()] = $template;
+                } else {
+                    return false;
+                }
+            } else {
+                ob_start();
+                $template->_mergeVars();
+                if (!empty(Smarty::$global_tpl_vars)) {
+                    $template->tpl_vars = array_merge(Smarty::$global_tpl_vars, $template->tpl_vars);
                 }
+                $result = $template->render(false, $function);
             }
+            if (isset($_smarty_old_error_level)) {
+                error_reporting($_smarty_old_error_level);
+            }
+            return $result;
         }
-        // register the object
-        $this->smarty->registered_objects[$object_name] =
-        array($object_impl, (array) $allowed, (boolean) $smarty_args, (array) $block_methods);
-        return $this;
-    }
-
-    /**
-     * return a reference to a registered object
-     *
-     * @param string $name object name
-     * @return object
-     * @throws SmartyException if no such object is found
-     */
-    public function getRegisteredObject($name)
-    {
-        if (!isset($this->smarty->registered_objects[$name])) {
-            throw new SmartyException("'$name' is not a registered object");
-        }
-        if (!is_object($this->smarty->registered_objects[$name][0])) {
-            throw new SmartyException("registered '$name' is not an object");
+        catch (Exception $e) {
+            while (ob_get_level() > $level) {
+                ob_end_clean();
+            }
+            throw $e;
         }
-        return $this->smarty->registered_objects[$name][0];
     }
 
     /**
-     * unregister an object
+     * Registers plugin to be used in templates
      *
-     * @param string $name object name
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     */
-    public function unregisterObject($name)
-    {
-        if (isset($this->smarty->registered_objects[$name])) {
-            unset($this->smarty->registered_objects[$name]);
-        }
-
-        return $this;
-    }
-
-    /**
-     * Registers static classes to be used in templates
+     * @api  Smarty::registerPlugin()
+     * @link http://www.smarty.net/docs/en/api.register.plugin.tpl
      *
-     * @param string $class name of template class
-     * @param string $class_impl the referenced PHP class to register
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException if $class_impl does not refer to an existing class
-     */
-    public function registerClass($class_name, $class_impl)
-    {
-        // test if exists
-        if (!class_exists($class_impl)) {
-            throw new SmartyException("Undefined class '$class_impl' in register template class");
-        }
-        // register the class
-        $this->smarty->registered_classes[$class_name] = $class_impl;
-        return $this;
-    }
-
-    /**
-     * Registers a default plugin handler
+     * @param  string   $type       plugin type
+     * @param  string   $name       name of template tag
+     * @param  callback $callback   PHP callback to register
+     * @param  bool     $cacheable  if true (default) this function is cache able
+     * @param  mixed    $cache_attr caching attributes if any
      *
-     * @param callable $callback class/method name
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException if $callback is not callable
+     * @return \Smarty|\Smarty_Internal_Template
+     * @throws SmartyException              when the plugin tag is invalid
      */
-    public function registerDefaultPluginHandler($callback)
+    public function registerPlugin($type, $name, $callback, $cacheable = true, $cache_attr = null)
     {
-        if (is_callable($callback)) {
-            $this->smarty->default_plugin_handler_func = $callback;
-        } else {
-            throw new SmartyException("Default plugin handler '$callback' not callable");
-        }
-
-        return $this;
+        return $this->ext->registerPlugin->registerPlugin($this, $type, $name, $callback, $cacheable, $cache_attr);
     }
 
     /**
-     * Registers a default template handler
+     * load a filter of specified type and name
      *
-     * @param callable $callback class/method name
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException if $callback is not callable
-     */
-    public function registerDefaultTemplateHandler($callback)
-    {
-        if (is_callable($callback)) {
-            $this->smarty->default_template_handler_func = $callback;
-        } else {
-            throw new SmartyException("Default template handler '$callback' not callable");
-        }
-
-        return $this;
-    }
-
-    /**
-     * Registers a default template handler
+     * @api  Smarty::loadFilter()
+     * @link http://www.smarty.net/docs/en/api.load.filter.tpl
+     *
+     * @param  string $type filter type
+     * @param  string $name filter name
      *
-     * @param callable $callback class/method name
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     * @throws SmartyException if $callback is not callable
+     * @return bool
+     * @throws SmartyException if filter could not be loaded
      */
-    public function registerDefaultConfigHandler($callback)
+    public function loadFilter($type, $name)
     {
-        if (is_callable($callback)) {
-            $this->smarty->default_config_handler_func = $callback;
-        } else {
-            throw new SmartyException("Default config handler '$callback' not callable");
-        }
-
-        return $this;
+        return $this->ext->loadFilter->loadFilter($this, $type, $name);
     }
 
     /**
      * Registers a filter function
      *
-     * @param string $type filter type
-     * @param callback $callback
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
-     */
-    public function registerFilter($type, $callback)
-    {
-        $this->smarty->registered_filters[$type][$this->_get_filter_name($callback)] = $callback;
-        return $this;
-    }
-
-    /**
-     * Unregisters a filter function
+     * @api  Smarty::registerFilter()
+     * @link http://www.smarty.net/docs/en/api.register.filter.tpl
+     *
+     * @param  string      $type filter type
+     * @param  callback    $callback
+     * @param  string|null $name optional filter name
      *
-     * @param string $type filter type
-     * @param callback $callback
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
+     * @return \Smarty|\Smarty_Internal_Template
+     * @throws \SmartyException
      */
-    public function unregisterFilter($type, $callback)
+    public function registerFilter($type, $callback, $name = null)
     {
-        $name = $this->_get_filter_name($callback);
-        if (isset($this->smarty->registered_filters[$type][$name])) {
-            unset($this->smarty->registered_filters[$type][$name]);
-        }
-
-        return $this;
+        return $this->ext->registerFilter->registerFilter($this, $type, $callback, $name);
     }
 
     /**
-     * Return internal filter name
+     * Registers object to be used in templates
      *
-     * @param callback $function_name
-     * @return string internal filter name
+     * @api  Smarty::registerObject()
+     * @link http://www.smarty.net/docs/en/api.register.object.tpl
+     *
+     * @param  string $object_name
+     * @param  object $object                     the referenced PHP object to register
+     * @param  array  $allowed_methods_properties list of allowed methods (empty = all)
+     * @param  bool   $format                     smarty argument format, else traditional
+     * @param  array  $block_methods              list of block-methods
+     *
+     * @return \Smarty|\Smarty_Internal_Template
+     * @throws \SmartyException
      */
-    public function _get_filter_name($function_name)
+    public function registerObject($object_name, $object, $allowed_methods_properties = array(), $format = true,
+                                   $block_methods = array())
     {
-        if (is_array($function_name)) {
-            $_class_name = (is_object($function_name[0]) ?
-            get_class($function_name[0]) : $function_name[0]);
-            return $_class_name . '_' . $function_name[1];
-        } else {
-            return $function_name;
-        }
+        return $this->ext->registerObject->registerObject($this, $object_name, $object, $allowed_methods_properties,
+                                                          $format, $block_methods);
     }
 
     /**
-     * load a filter of specified type and name
-     *
-     * @param string $type filter type
-     * @param string $name filter name
-     * @throws SmartyException if filter could not be loaded
+     * @param boolean $caching
      */
-    public function loadFilter($type, $name)
+    public function setCaching($caching)
     {
-        $_plugin = "smarty_{$type}filter_{$name}";
-        $_filter_name = $_plugin;
-        if ($this->smarty->loadPlugin($_plugin)) {
-            if (class_exists($_plugin, false)) {
-                $_plugin = array($_plugin, 'execute');
-            }
-            if (is_callable($_plugin)) {
-                $this->smarty->registered_filters[$type][$_filter_name] = $_plugin;
-                return true;
-            }
-        }
-        throw new SmartyException("{$type}filter \"{$name}\" not callable");
+        $this->caching = $caching;
     }
 
     /**
-     * unload a filter of specified type and name
-     *
-     * @param string $type filter type
-     * @param string $name filter name
-     * @return Smarty_Internal_Templatebase current Smarty_Internal_Templatebase (or Smarty or Smarty_Internal_Template) instance for chaining
+     * @param int $cache_lifetime
      */
-    public function unloadFilter($type, $name)
+    public function setCacheLifetime($cache_lifetime)
     {
-        $_filter_name = "smarty_{$type}filter_{$name}";
-        if (isset($this->smarty->registered_filters[$type][$_filter_name])) {
-            unset ($this->smarty->registered_filters[$type][$_filter_name]);
-        }
-
-        return $this;
+        $this->cache_lifetime = $cache_lifetime;
     }
 
     /**
-     * preg_replace callback to convert camelcase getter/setter to underscore property names
-     *
-     * @param string $match match string
-     * @return string replacemant
+     * @param string $compile_id
      */
-    private function replaceCamelcase($match) {
-        return "_" . strtolower($match[1]);
+    public function setCompileId($compile_id)
+    {
+        $this->compile_id = $compile_id;
     }
 
     /**
-     * Handle unknown class methods
-     *
-     * @param string $name unknown method-name
-     * @param array  $args argument array
+     * @param string $cache_id
      */
-    public function __call($name, $args)
+    public function setCacheId($cache_id)
     {
-        static $_prefixes = array('set' => true, 'get' => true);
-        static $_resolved_property_name = array();
-        static $_resolved_property_source = array();
-
-        // method of Smarty object?
-        if (method_exists($this->smarty, $name)) {
-            return call_user_func_array(array($this->smarty, $name), $args);
-        }
-        // see if this is a set/get for a property
-        $first3 = strtolower(substr($name, 0, 3));
-        if (isset($_prefixes[$first3]) && isset($name[3]) && $name[3] !== '_') {
-            if (isset($_resolved_property_name[$name])) {
-                $property_name = $_resolved_property_name[$name];
-            } else {
-                // try to keep case correct for future PHP 6.0 case-sensitive class methods
-                // lcfirst() not available < PHP 5.3.0, so improvise
-                $property_name = strtolower(substr($name, 3, 1)) . substr($name, 4);
-                // convert camel case to underscored name
-                $property_name = preg_replace_callback('/([A-Z])/', array($this,'replaceCamelcase'), $property_name);
-                $_resolved_property_name[$name] = $property_name;
-            }
-            if (isset($_resolved_property_source[$property_name])) {
-                $_is_this = $_resolved_property_source[$property_name];
-            } else {
-                $_is_this = null;
-                if (property_exists($this, $property_name)) {
-                    $_is_this = true;
-                } else if (property_exists($this->smarty, $property_name)) {
-                    $_is_this = false;
-                }
-                $_resolved_property_source[$property_name] = $_is_this;
-            }
-            if ($_is_this) {
-                if ($first3 == 'get')
-                return $this->$property_name;
-                else
-                return $this->$property_name = $args[0];
-            } else if ($_is_this === false) {
-                if ($first3 == 'get')
-                return $this->smarty->$property_name;
-                else
-                return $this->smarty->$property_name = $args[0];
-            } else {
-                throw new SmartyException("property '$property_name' does not exist.");
-                return false;
-            }
-        }
-        if ($name == 'Smarty') {
-            throw new SmartyException("PHP5 requires you to call __construct() instead of Smarty()");
-        }
-        // must be unknown
-        throw new SmartyException("Call of unknown method '$name'.");
+        $this->cache_id = $cache_id;
     }
 
 }
 
-?>
\ No newline at end of file