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- cache modified check implemented

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This commit is contained in:
Uwe.Tews
2010-02-26 12:58:36 +00:00
parent 0426dd0459
commit 3059df16aa
2 changed files with 290 additions and 248 deletions
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3
change_log.txt
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@@ -1,3 +1,6 @@
26/02/2010
- cache modified check implemented
24/02/2010
- bugfix on expressions in doublequoted string enclosed in backticks
- added security property $static_classes for static class security

155
libs/Smarty.class.php
View File

@@ -232,7 +232,8 @@ class Smarty extends Smarty_Internal_Data {
/**
* Class constructor, initializes basic smarty properties
*/
public function __construct() {
public function __construct()
{
// self reference needed by other classes methods
$this->smarty = $this;
@@ -253,8 +254,7 @@ class Smarty extends Smarty_Internal_Data {
if (!$this->debugging && $this->debugging_ctrl == 'URL') {
if (isset($_SERVER['QUERY_STRING'])) {
$_query_string = $_SERVER['QUERY_STRING'];
}
else {
} else {
$_query_string = '';
}
if (false !== strpos($_query_string, $this->smarty_debug_id)) {
@@ -262,18 +262,15 @@ class Smarty extends Smarty_Internal_Data {
// enable debugging for this browser session
setcookie('SMARTY_DEBUG', true);
$this->debugging = true;
}
elseif (false !== strpos($_query_string, $this->smarty_debug_id . '=off')) {
} elseif (false !== strpos($_query_string, $this->smarty_debug_id . '=off')) {
// disable debugging for this browser session
setcookie('SMARTY_DEBUG', false);
$this->debugging = false;
}
else {
} else {
// enable debugging for this page
$this->debugging = true;
}
}
else {
} else {
if (isset($_COOKIE['SMARTY_DEBUG'])) {
$this->debugging = true;
}
@@ -287,7 +284,8 @@ class Smarty extends Smarty_Internal_Data {
/**
* Class destructor
*/
public function __destruct() {
public function __destruct()
{
// restore to previous exception handler, if any
if (!empty($this->exception_handler))
restore_exception_handler();
@@ -302,7 +300,8 @@ class Smarty extends Smarty_Internal_Data {
* @param object $ |null $parent next higher level of Smarty variables
* @return string rendered template output
*/
public function fetch($template, $cache_id = null, $compile_id = null, $parent = null) {
public function fetch($template, $cache_id = null, $compile_id = null, $parent = null, $display = false)
{
if (is_object($cache_id)) {
$parent = $cache_id;
$cache_id = null;
@@ -316,17 +315,49 @@ class Smarty extends Smarty_Internal_Data {
$_template = $this->createTemplate ($template, $cache_id, $compile_id, $parent);
$_smarty_old_error_level = $this->debugging ? error_reporting() : error_reporting(isset($this->error_reporting)
? $this->error_reporting : error_reporting() &~E_NOTICE);
// obtain data for cache modified check
if ($this->cache_modified_check && $this->caching && $display) {
$_isCached = $_template->isCached() && !$_template->has_nocache_code;
if ($_isCached) {
$_gmt_mtime = gmdate('D, d M Y H:i:s', $_template->getCachedTimestamp()) . ' GMT';
} else {
$_gmt_mtime = '';
}
}
// return redered template
if (isset($this->autoload_filters['output']) || isset($this->registered_filters['output'])) {
$_output = Smarty_Internal_Filter_Handler::runFilter('output', $_template->getRenderedTemplate(), $this);
}
else {
} else {
$_output = $_template->getRenderedTemplate();
}
$_template->rendered_content = null;
error_reporting($_smarty_old_error_level);
// display or fetch
if ($display) {
if ($this->caching && $this->cache_modified_check) {
$_last_modified_date = @substr($_SERVER['HTTP_IF_MODIFIED_SINCE'], 0, strpos($_SERVER['HTTP_IF_MODIFIED_SINCE'], 'GMT') + 3);
if ($_isCached && $_gmt_mtime == $_last_modified_date) {
if (php_sapi_name() == 'cgi')
header('Status: 304 Not Modified');
else
header('HTTP/1.1 304 Not Modified');
} else {
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $_template->getCachedTimestamp()) . ' GMT');
echo $_output;
}
} else {
echo $_output;
}
// debug output
if ($this->debugging) {
Smarty_Internal_Debug::display_debug($this);
}
return;
} else {
// return fetched content
return $_output;
}
}
/**
* displays a Smarty template
@@ -336,14 +367,10 @@ class Smarty extends Smarty_Internal_Data {
* @param mixed $compile_id compile id to be used with this template
* @param object $parent next higher level of Smarty variables
*/
public function display($template, $cache_id = null, $compile_id = null, $parent = null) {
public function display($template, $cache_id = null, $compile_id = null, $parent = null)
{
// display template
echo $this->fetch ($template, $cache_id, $compile_id, $parent);
// debug output
if ($this->debugging) {
Smarty_Internal_Debug::display_debug($this);
}
return true;
$this->fetch ($template, $cache_id, $compile_id, $parent, true);
}
/**
@@ -354,7 +381,8 @@ class Smarty extends Smarty_Internal_Data {
* @param mixed $compile_id compile id to be used with this template
* @return boolean cache status
*/
public function isCached($template, $cache_id = null, $compile_id = null) {
public function isCached($template, $cache_id = null, $compile_id = null)
{
if (!($template instanceof $this->template_class)) {
$template = $this->createTemplate ($template, $cache_id, $compile_id, $this);
}
@@ -368,7 +396,8 @@ class Smarty extends Smarty_Internal_Data {
* @param object $parent next higher level of Smarty variables
* @returns object data object
*/
public function createData($parent = null) {
public function createData($parent = null)
{
return new Smarty_Data($parent, $this);
}
@@ -381,7 +410,8 @@ class Smarty extends Smarty_Internal_Data {
* @param mixed $compile_id compile id to be used with this template
* @returns object template object
*/
public function createTemplate($template, $cache_id = null, $compile_id = null, $parent = null) {
public function createTemplate($template, $cache_id = null, $compile_id = null, $parent = null)
{
if (is_object($cache_id) || is_array($cache_id)) {
$parent = $cache_id;
$cache_id = null;
@@ -389,8 +419,7 @@ class Smarty extends Smarty_Internal_Data {
if (is_array($parent)) {
$data = $parent;
$parent = null;
}
else {
} else {
$data = null;
}
if (!is_object($template)) {
@@ -400,13 +429,11 @@ class Smarty extends Smarty_Internal_Data {
if (isset($this->template_objects[$_templateId]) && $this->caching) {
// return cached template object
$tpl = $this->template_objects[$_templateId];
}
else {
} else {
// create new template object
$tpl = new $this->template_class($template, $this, $parent, $cache_id, $compile_id);
}
}
else {
} else {
// just return a copy of template class
$tpl = $template;
}
@@ -423,13 +450,13 @@ class Smarty extends Smarty_Internal_Data {
/**
* Loads security class and enables security
*/
public function enableSecurity() {
public function enableSecurity()
{
if (isset($this->security_class)) {
$this->security_policy = new $this->security_class;
$this->security_handler = new Smarty_Internal_Security_Handler($this);
$this->security = true;
}
else {
} else {
throw new Exception('Property security_class is not defined');
}
}
@@ -437,7 +464,8 @@ class Smarty extends Smarty_Internal_Data {
/**
* Disable security
*/
public function disableSecurity() {
public function disableSecurity()
{
$this->security = true;
}
@@ -446,7 +474,8 @@ class Smarty extends Smarty_Internal_Data {
*
* @param string $ |array $template_dir folder(s) of template sorces
*/
public function setTemplateDir($template_dir) {
public function setTemplateDir($template_dir)
{
$this->template_dir = (array)$template_dir;
return;
}
@@ -456,20 +485,21 @@ class Smarty extends Smarty_Internal_Data {
*
* @param string $ |array $template_dir folder(s) of template sources
*/
public function addTemplateDir($template_dir) {
public function addTemplateDir($template_dir)
{
$this->template_dir = array_merge((array)$this->template_dir, (array)$template_dir);
$this->template_dir = array_unique($this->template_dir);
return;
}
/**
* Check if a template resource exists
*
* @param string $resource_name template name
* @return boolean status
*/
function templateExists($resource_name) {
function templateExists($resource_name)
{
// create template object
$tpl = new $this->template_class($resource_name, $this);
// check if it does exists
@@ -484,7 +514,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $plugin_name class plugin name to load
* @return string |boolean filepath of loaded file or false
*/
public function loadPlugin($plugin_name, $check = true) {
public function loadPlugin($plugin_name, $check = true)
{
// if function or class exists, exit silently (already loaded)
if ($check && (is_callable($plugin_name) || class_exists($plugin_name, false)))
return true;
@@ -502,8 +533,7 @@ class Smarty extends Smarty_Internal_Data {
if (file_exists($file)) {
require_once($file);
return $file;
}
else {
} else {
return false;
}
}
@@ -531,7 +561,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $name filter name
* @return bool
*/
function loadFilter($type, $name) {
function loadFilter($type, $name)
{
$_plugin = "smarty_{$type}filter_{$name}";
$_filter_name = $_plugin;
if ($this->loadPlugin($_plugin)) {
@@ -552,7 +583,8 @@ class Smarty extends Smarty_Internal_Data {
* @param mixed $handler function name or array with object/method names
* @return string previous exception handler
*/
public function setExceptionHandler($handler) {
public function setExceptionHandler($handler)
{
$this->exception_handler = $handler;
return set_exception_handler($handler);
}
@@ -563,7 +595,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $error_msg
* @param integer $error_type
*/
public function trigger_error($error_msg, $error_type = E_USER_WARNING) {
public function trigger_error($error_msg, $error_type = E_USER_WARNING)
{
throw new Exception("Smarty error: $error_msg");
}
@@ -572,13 +605,13 @@ class Smarty extends Smarty_Internal_Data {
*
* @param callback $function_name
*/
public function _get_filter_name($function_name) {
public function _get_filter_name($function_name)
{
if (is_array($function_name)) {
$_class_name = (is_object($function_name[0]) ?
get_class($function_name[0]) : $function_name[0]);
return $_class_name . '_' . $function_name[1];
}
else {
} else {
return $function_name;
}
}
@@ -590,7 +623,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $ |array $ plugins folder
* @return
*/
function addPluginsDir($plugins_dir) {
function addPluginsDir($plugins_dir)
{
$this->plugins_dir = array_merge((array)$this->plugins_dir, (array)$plugins_dir);
$this->plugins_dir = array_unique($this->plugins_dir);
return;
@@ -603,16 +637,15 @@ class Smarty extends Smarty_Internal_Data {
* @param string $varname variable name or null
* @return string variable value or or array of variables
*/
function getGlobal($varname = null) {
function getGlobal($varname = null)
{
if (isset($varname)) {
if (isset($this->global_tpl_vars[$varname])) {
return $this->global_tpl_vars[$varname]->value;
}
else {
} else {
return '';
}
}
else {
} else {
$_result = array();
foreach ($this->global_tpl_vars AS $key => $var) {
$_result[$key] = $var->value;
@@ -627,7 +660,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $name object name
* @return object
*/
function getRegisteredObject($name) {
function getRegisteredObject($name)
{
if (!isset($this->registered_objects[$name]))
throw new Exception("'$name' is not a registered object");
@@ -642,7 +676,8 @@ class Smarty extends Smarty_Internal_Data {
*
* @return string
*/
function getDebugTemplate() {
function getDebugTemplate()
{
return $this->debug_tpl;
}
@@ -652,7 +687,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $tpl_name
* @return bool
*/
function setDebugTemplate($tpl_name) {
function setDebugTemplate($tpl_name)
{
return $this->debug_tpl = $tpl_name;
}
@@ -661,7 +697,8 @@ class Smarty extends Smarty_Internal_Data {
*
* @param string $name property name
*/
public function __get($name) {
public function __get($name)
{
if (in_array($name, array('register', 'unregister', 'utility', 'cache'))) {
$class = "Smarty_Internal_" . ucfirst($name);
$this->$name = new $class($this);
@@ -682,7 +719,8 @@ class Smarty extends Smarty_Internal_Data {
* @param string $name unknown methode name
* @param array $args aurgument array
*/
public function __call($name, $args) {
public function __call($name, $args)
{
static $camel_func;
if (!isset($camel_func))
$camel_func = create_function('$c', 'return "_" . strtolower($c[1]);');
@@ -731,7 +769,8 @@ class Smarty extends Smarty_Internal_Data {
}
}
function smartyAutoload($class) {
function smartyAutoload($class)
{
$_class = strtolower($class);
if (substr($_class, 0, 16) === 'smarty_internal_' || $_class == 'smarty_security') {
include SMARTY_SYSPLUGINS_DIR . $_class . '.php';