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smarty_internal_template.php
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<?php
/**
* Smarty Internal Plugin Template
*
* This file contains the Smarty template engine
*
* @package Smarty
* @subpackage Templates
* @author Uwe Tews
*/
/**
* Main class with template data structures and methods
*/
class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
// object cache
public $compiler_object = null;
public $cacher_object = null;
// Smarty parameter
public $cache_id = null;
public $compile_id = null;
public $caching = null;
public $cache_lifetime = null;
public $cacher_class = null;
public $caching_type = null;
public $force_compile = null;
public $forceNocache = false;
// Template resource
public $template_resource = null;
public $resource_type = null;
public $resource_name = null;
private $resource_object = null;
private $usesCompiler = null;
private $isEvaluated = null;
private $isExisting = null;
// Template source
public $template_filepath = null;
public $template_source = null;
private $template_timestamp = null;
// Compiled template
private $compiled_filepath = null;
public $compiled_template = null;
private $compiled_timestamp = null;
public $mustCompile = null;
public $suppressHeader = false;
public $suppressFileDependency = false;
public $extract_code = false;
public $extracted_compiled_code = '';
// Rendered content
public $rendered_content = null;
// Cache file
private $cached_filepath = null;
private $cached_timestamp = null;
private $isCached = null;
private $cache_resource_object = null;
// template variables
public $tpl_vars = array();
public $parent = null;
public $config_vars = array();
// storage for plugin
public $plugin_data = array();
// special properties
public $properties = array();
// storage for block data
public $block_data = array();
/**
* Create template data object
*
* Some of the global Smarty settings copied to template scope
* It load the required template resources and cacher plugins
*
* @param string $template_resource template resource string
* @param object $_parent back pointer to parent object with variables or null
* @param mixed $_cache_id cache id or null
* @param mixed $_compile_id compile id or null
*/
public function __construct($template_resource, $smarty, $_parent = null, $_cache_id = null, $_compile_id = null)
{
$this->smarty = $smarty;
// Smarty parameter
$this->cache_id = $_cache_id === null ? $this->smarty->cache_id : $_cache_id;
$this->compile_id = $_compile_id === null ? $this->smarty->compile_id : $_compile_id;
$this->force_compile = $this->smarty->force_compile;
$this->caching = $this->smarty->caching;
$this->cache_lifetime = $this->smarty->cache_lifetime;
$this->force_cache = $this->smarty->force_cache;
$this->cacher_class = $this->smarty->cacher_class;
$this->caching_type = $this->smarty->default_caching_type;
$this->security = $this->smarty->security;
$this->cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($this->caching_type);
$this->parent = $_parent;
$this->properties['file_dependency'] = array();
// dummy local smarty variable
$this->tpl_vars['smarty'] = new Smarty_Variable;
// Template resource
$this->template_resource = $template_resource;
// parse resource name
if (!$this->parseResourceName ($template_resource, $this->resource_type, $this->resource_name, $this->resource_object)) {
throw new Exception ("Unable to parse resource name \"{$template_resource}\"");
}
// load cache resource
if (!$this->isEvaluated() && $this->caching) {
$this->cache_resource_object = new $this->cache_resource_class($this->smarty);
}
}
/**
* Returns the template filepath
*
* The template filepath is determined by the actual resource handler
*
* @return string the template filepath
*/
public function getTemplateFilepath ()
{
return $this->template_filepath === null ?
$this->template_filepath = $this->resource_object->getTemplateFilepath($this) :
$this->template_filepath;
}
/**
* Returns the timpestamp of the template source
*
* The template timestamp is determined by the actual resource handler
*
* @return integer the template timestamp
*/
public function getTemplateTimestamp ()
{
return $this->template_timestamp === null ?
$this->template_timestamp = $this->resource_object->getTemplateTimestamp($this) :
$this->template_timestamp;
}
/**
* Returns the template source code
*
* The template source is being read by the actual resource handler
*
* @return string the template source
*/
public function getTemplateSource ()
{
if ($this->template_source === null) {
if (!$this->resource_object->getTemplateSource($this)) {
throw new Exception("Unable to read template {$this->resource_type} '{$this->resource_name}'");
}
}
return $this->template_source;
}
/**
* Returns if the template is existing
*
* The status is determined by the actual resource handler
*
* @return boolean true if the template exists
*/
public function isExisting ($error = false)
{
if ($this->isExisting === null) {
$this->isExisting = $this->resource_object->isExisting($this);
}
if (!$this->isExisting && $error) {
throw new Exception("Unable to load template {$this->resource_type} '{$this->resource_name}'");
}
return $this->isExisting;
}
/**
* Returns if the template resource uses the Smarty compiler
*
* The status is determined by the actual resource handler
*
* @return boolean true if the template will use the compiler
*/
public function usesCompiler ()
{
return $this->usesCompiler === null ?
$this->usesCompiler = $this->resource_object->usesCompiler() :
$this->usesCompiler;
}
/**
* Returns if the compiled template is stored or just evaluated in memory
*
* The status is determined by the actual resource handler
*
* @return boolean true if the compiled template has to be evaluated
*/
public function isEvaluated ()
{
return $this->isEvaluated === null ?
$this->isEvaluated = $this->resource_object->isEvaluated() :
$this->isEvaluated;
}
/**
* Returns if the current template must be compiled by the Smarty compiler
*
* It does compare the timestamps of template source and the compiled templates and checks the force compile configuration
*
* @return boolean true if the template must be compiled
*/
public function mustCompile ()
{
$this->isExisting(true);
if ($this->mustCompile === null) {
$this->mustCompile = ($this->usesCompiler() && ($this->force_compile || $this->isEvaluated() || $this->getCompiledTimestamp () === false ||
// ($this->smarty->compile_check && $this->getCompiledTimestamp () !== $this->getTemplateTimestamp ())));
($this->smarty->compile_check && $this->getCompiledTimestamp () < $this->getTemplateTimestamp ())));
}
return $this->mustCompile;
}
/**
* Returns the compiled template filepath
*
* @return string the template filepath
*/
public function getCompiledFilepath ()
{
return $this->compiled_filepath === null ?
($this->compiled_filepath = !$this->isEvaluated() ? $this->resource_object->getCompiledFilepath($this) : false) :
$this->compiled_filepath;
}
/**
* Returns the timpestamp of the compiled template
*
* @return integer the template timestamp
*/
public function getCompiledTimestamp ()
{
return $this->compiled_timestamp === null ?
($this->compiled_timestamp = (!$this->isEvaluated() && file_exists($this->getCompiledFilepath())) ? filemtime($this->getCompiledFilepath()) : false) :
$this->compiled_timestamp;
}
/**
* Returns the compiled template
*
* It checks if the template must be compiled or just read from the template resource
*
* @return string the compiled template
*/
public function getCompiledTemplate ()
{
if ($this->compiled_template === null) {
// see if template needs compiling.
if ($this->mustCompile()) {
$this->compileTemplateSource();
} else {
if ($this->compiled_template === null) {
$this->compiled_template = !$this->isEvaluated() && $this->usesCompiler() ? file_get_contents($this->getCompiledFilepath()) : false;
}
}
}
return $this->compiled_template;
}
/**
* Compiles the template
*
* If the template is not evaluated the compiled template is saved on disk
*/
public function compileTemplateSource ()
{
if (!$this->isEvaluated) {
$this->properties['file_dependency']['F' . abs(crc32($this->getTemplateFilepath()))] = array($this->getTemplateFilepath(), $this->getTemplateTimestamp());
}
if ($this->smarty->debugging) {
Smarty_Internal_Debug::start_compile($this);
}
// compile template
if (!is_object($this->compiler_object)) {
// load compiler
$this->smarty->loadPlugin($this->resource_object->compiler_class);
$this->compiler_object = new $this->resource_object->compiler_class($this->resource_object->template_lexer_class, $this->resource_object->template_parser_class, $this->smarty);
// load cacher
if ($this->caching) {
$this->smarty->loadPlugin($this->cacher_class);
$this->cacher_object = new $this->cacher_class($this->smarty);
}
}
// call compiler
if ($this->compiler_object->compileTemplate($this)) {
// compiling succeded
if (!$this->isEvaluated()) {
// write compiled template
Smarty_Internal_Write_File::writeFile($this->getCompiledFilepath(), $this->compiled_template, $this->smarty);
// make template and compiled file timestamp match
/**
$this->compiled_timestamp = null;
touch($this->getCompiledFilepath(), $this->getTemplateTimestamp());
// daylight saving time problem on windows
if ($this->template_timestamp != $this->getCompiledTimestamp()) {
touch($this->getCompiledFilepath(), 2 * $this->template_timestamp - $this->compiled_timestamp);
}
**/
}
} else {
// error compiling template
throw new Exception("Error compiling template {$this->getTemplateFilepath ()}");
return false;
}
if ($this->smarty->debugging) {
Smarty_Internal_Debug::end_compile($this);
}
}
/**
* Returns the filepath of the cached template output
*
* The filepath is determined by the actual resource handler of the cacher
*
* @return string the cache filepath
*/
public function getCachedFilepath ()
{
return $this->cached_filepath === null ?
$this->cached_filepath = ($this->isEvaluated() || !$this->caching) ? false : $this->cache_resource_object->getCachedFilepath($this) :
$this->cached_filepath;
}
/**
* Returns the timpestamp of the cached template output
*
* The timestamp is determined by the actual resource handler of the cacher
*
* @return integer the template timestamp
*/
public function getCachedTimestamp ()
{
return $this->cached_timestamp === null ?
$this->cached_timestamp = ($this->isEvaluated() || !$this->caching) ? false : $this->cache_resource_object->getCachedTimestamp($this) :
$this->cached_timestamp;
}
/**
* Returns the cached template output
*
* @return string |booelan the template content or false if the file does not exist
*/
public function getCachedContent ()
{
return $this->rendered_content === null ?
$this->rendered_content = ($this->isEvaluated() || !$this->caching) ? false : $this->cache_resource_object->getCachedContents($this) :
$this->rendered_content;
}
/**
* Writes the cached template output
*/
public function writeCachedContent ()
{
// build file dependency string
$this->properties['cache_lifetime'] = $this->cache_lifetime;
return ($this->isEvaluated() || !$this->caching) ? false : $this->cache_resource_object->writeCachedContent($this, $this->createPropertyHeader() . $this->rendered_content);
}
/**
* Checks of a valid version redered HTML output is in the cache
*
* If the cache is valid the contents is stored in the template object
*
* @return boolean true if cache is valid
*/
public function isCached ()
{
if ($this->isCached === null) {
$this->isCached = false;
if ($this->caching && !$this->isEvaluated() && !$this->force_compile && !$this->force_cache) {
if ($this->getCachedTimestamp() === false) {
return $this->isCached;
}
if ($this->caching === SMARTY_CACHING_LIFETIME_SAVED || ($this->caching == SMARTY_CACHING_LIFETIME_CURRENT && (time() <= ($this->getCachedTimestamp() + $this->cache_lifetime) || $this->cache_lifetime < 0))) {
if ($this->smarty->debugging) {
Smarty_Internal_Debug::start_cache($this);
}
$this->rendered_content = $this->cache_resource_object->getCachedContents($this);
if ($this->smarty->debugging) {
Smarty_Internal_Debug::end_cache($this);
}
if ($this->caching === SMARTY_CACHING_LIFETIME_SAVED && $this->properties['cache_lifetime'] > 0 && (time() > ($this->getCachedTimestamp() + $this->properties['cache_lifetime']))) {
$this->rendered_content = null;
return $this->isCached;
}
if (!empty($this->properties['file_dependency']) && $this->smarty->compile_check) {
foreach ($this->properties['file_dependency'] as $_file_to_check) {
$this->getResourceTypeName($_file_to_check[0], $resource_type, $resource_name);
If ($resource_type == 'file') {
$mtime = filemtime($_file_to_check[0]);
} else {
$resource_handler = $this->loadTemplateResourceHandler($resource_type);
$mtime = $resource_handler->getTemplateTimestampTypeName($resource_type, $resource_name);
}
// If ($mtime > $this->getCachedTimestamp()) {
If ($mtime > $_file_to_check[1]) {
$this->rendered_content = null;
$this->properties['file_dependency'] = array();
return $this->isCached;
}
}
}
$this->isCached = true;
}
}
}
return $this->isCached;
}
/**
* Render the output using the compiled template or the PHP template source
*
* The rendering process is accomplished by just including the PHP files.
* The only exceptions are evaluated templates (string template). Their code has
* to be evaluated
*/
public function renderTemplate ()
{
if ($this->usesCompiler()) {
if ($this->mustCompile() && $this->compiled_template === null) {
$this->compileTemplateSource();
}
if ($this->smarty->debugging) {
Smarty_Internal_Debug::start_render($this);
}
$_smarty_tpl = $this;
ob_start();
if ($this->isEvaluated()) {
eval("?>" . $this->compiled_template);
} else {
include($this->getCompiledFilepath ());
// check file dependencies at compiled code
if ($this->smarty->compile_check) {
if (!empty($this->properties['file_dependency'])) {
$this->mustCompile = false;
foreach ($this->properties['file_dependency'] as $_file_to_check) {
$this->getResourceTypeName($_file_to_check[0], $resource_type, $resource_name);
If ($resource_type == 'file') {
$mtime = filemtime($_file_to_check[0]);
} else {
$resource_handler = $this->loadTemplateResourceHandler($resource_type);
$mtime = $resource_handler->getTemplateTimestampTypeName($resource_type, $resource_name);
}
// If ($mtime != $_file_to_check[1]) {
If ($mtime > $_file_to_check[1]) {
$this->properties['file_dependency'] = array();
$this->mustCompile = true;
break;
}
}
if ($this->mustCompile) {
// recompile and render again
ob_get_clean();
$this->compileTemplateSource();
ob_start();
include($this->getCompiledFilepath ());
}
}
}
}
} else {
if (is_callable(array($this->resource_object, 'renderUncompiled'))) {
if ($this->smarty->debugging) {
Smarty_Internal_Debug::start_render($this);
}
ob_start();
$this->resource_object->renderUncompiled($this);
} else {
throw new Exception("Resource '$this->resource_type' must have 'renderUncompiled' methode");
}
}
$this->rendered_content = ob_get_clean();
if (!$this->isEvaluated) {
$this->properties['file_dependency']['F' . abs(crc32($this->getTemplateFilepath()))] = array($this->getTemplateFilepath(), $this->getTemplateTimestamp());
}
if ($this->parent instanceof Smarty_Template or $this->parent instanceof Smarty_Internal_Template) {
// var_dump('merge ', $this->parent->getTemplateFilepath(), $this->parent->properties['file_dependency'], $this->getTemplateFilepath(), $this->properties['file_dependency']);
$this->parent->properties['file_dependency'] = array_merge($this->parent->properties['file_dependency'], $this->properties['file_dependency']);
}
if ($this->smarty->debugging) {
Smarty_Internal_Debug::end_render($this);
}
// write to cache when nessecary
if (!$this->isEvaluated() && ($this->caching == SMARTY_CACHING_LIFETIME_SAVED || $this->caching == SMARTY_CACHING_LIFETIME_CURRENT)) {
if ($this->smarty->debugging) {
Smarty_Internal_Debug::start_cache($this);
}
// write rendered template
$this->writeCachedContent($this);
// cache file may contain nocache code. read it back for processing
$this->rendered_content = $this->cache_resource_object->getCachedContents($this);
if ($this->smarty->debugging) {
Smarty_Internal_Debug::end_cache($this);
}
}
}
/**
* Returns the rendered HTML output
*
* If the cache is valid the cached content is used, otherwise
* the output is rendered from the compiled template or PHP template source
*
* @return string rendered HTML output
*/
public function getRenderedTemplate ()
{
// disable caching for evaluated code
if ($this->isEvaluated()) {
$this->caching = false;
}
// checks if template exists
$this->isExisting(true);
// read from cache or render
if ($this->rendered_content === null && !$this->isCached()) {
// render template (not loaded and not in cache)
$this->renderTemplate();
}
$this->updateParentVariables();
return $this->rendered_content;
}
/**
* Parse a template resource in its name and type
* Load required resource handler
*
* @param string $template_resource template resource specification
* @param string $resource_type return resource type
* @param string $resource_name return resource name
* @param object $resource_handler return resource handler object
*/
public function parseResourceName($template_resource, &$resource_type, &$resource_name, &$resource_handler)
{
if (empty($template_resource))
return false;
$this->getResourceTypeName($template_resource, $resource_type, $resource_name);
$resource_handler = $this->loadTemplateResourceHandler($resource_type);
// cache template object under a unique ID
// do not cache string resources
// ***** if ($resource_type != 'string' && $this->smarty->caching) {
if ($resource_type != 'string') {
$this->smarty->template_objects[$this->buildTemplateId ($this->template_resource, $this->cache_id, $this->compile_id)] = $this;
}
return true;
}
/**
* get system filepath to template
*/
public function buildTemplateFilepath ($file = null)
{
if ($file == null) {
$file = $this->resource_name;
}
foreach((array)$this->smarty->template_dir as $_template_dir) {
if (strpos('/\\', substr($_template_dir, -1)) === false) {
$_template_dir .= DS;
}
$_filepath = $_template_dir . $file;
if (file_exists($_filepath))
return $_filepath;
}
if (file_exists($file)) return $file;
// no tpl file found
if (!empty($this->smarty->default_template_handler_func)) {
if (!is_callable($this->smarty->default_template_handler_func)) {
throw new Exception("Default template handler not callable");
} else {
$_return = call_user_func_array($this->smarty->default_template_handler_func,
array($this->resource_type, $this->resource_name, &$this->template_source, &$this->template_timestamp, $this));
if ($_return == true) {
return $file;
} elseif (is_string($_return)) {
return $_return;
}
}
}
// throw new Exception("Unable to load template \"{$file}\"");
return false;
}
/**
* Decode saved properties from compiled template and cache files
*/
public function decodeProperties ($properties)
{
$prop = unserialize($properties);
if (isset($prop['cache_lifetime'])) {
$this->properties['cache_lifetime'] = $prop['cache_lifetime'];
}
if (isset($prop['file_dependency'])) {
$this->properties['file_dependency'] = array_merge($this->properties['file_dependency'], $prop['file_dependency']);
// $this->properties['file_dependency'] = array_unique($this->properties['file_dependency']);
}
if (!empty($prop['function'])) {
foreach ($prop['function'] as $_name => $_data) {
$this->smarty->template_functions[$_name]['compiled'] = str_replace('_%n', "\n", $_data['compiled']);
$this->smarty->template_functions[$_name]['parameter'] = $_data['parameter'];
}
}
}
/**
* Update Smarty variables in parent variable object
*/
public function updateParentVariables ($scope = SMARTY_LOCAL_SCOPE)
{
foreach ($this->tpl_vars as $_key => $_variable) {
// copy global vars back to parent
if (isset($this->parent) && ($scope == SMARTY_PARENT_SCOPE || $this->tpl_vars[$_key]->scope == SMARTY_PARENT_SCOPE)) {
if (isset($this->parent->tpl_vars[$_key])) {
// variable is already defined in parent, copy value
$this->parent->tpl_vars[$_key]->value = $this->tpl_vars[$_key]->value;
} else {
// create variable in parent
$this->parent->tpl_vars[$_key] = clone $_variable;
$this->parent->tpl_vars[$_key]->scope = SMARTY_LOCAL_SCOPE;
}
}
if ($scope == SMARTY_ROOT_SCOPE || $this->tpl_vars[$_key]->scope == SMARTY_ROOT_SCOPE) {
$_ptr = $this;
// find root
while ($_ptr->parent != null) {
$_ptr = $_ptr->parent;
}
if (isset($_ptr->tpl_vars[$_key])) {
// variable is already defined in root, copy value
$_ptr->tpl_vars[$_key]->value = $this->tpl_vars[$_key]->value;
} else {
// create variable in root
$_ptr->tpl_vars[$_key] = clone $_variable;
$_ptr->tpl_vars[$_key]->scope = SMARTY_LOCAL_SCOPE;
}
}
if ($scope == SMARTY_GLOBAL_SCOPE || $this->tpl_vars[$_key]->scope == SMARTY_GLOBAL_SCOPE) {
if (isset($this->smarty->global_tpl_vars[$_key])) {
// variable is already defined in root, copy value
$this->smarty->global_tpl_vars[$_key]->value = $this->tpl_vars[$_key]->value;
} else {
// create variable in root
$this->smarty->global_tpl_vars[$_key] = clone $_variable;
}
$this->smarty->global_tpl_vars[$_key]->scope = SMARTY_LOCAL_SCOPE;
}
}
}
/**
* Split a template resource in its name and type
*
* @param string $template_resource template resource specification
* @param string $resource_type return resource type
* @param string $resource_name return resource name
*/
private function getResourceTypeName ($template_resource, &$resource_type, &$resource_name)
{
if (strpos($template_resource, ':') === false) {
// no resource given, use default
$resource_type = $this->smarty->default_resource_type;
$resource_name = $template_resource;
} else {
// get type and name from path
list($resource_type, $resource_name) = explode(':', $template_resource, 2);
if (strlen($resource_type) == 1) {
// 1 char is not resource type, but part of filepath
$resource_type = 'file';
$resource_name = $template_resource;
} else {
$resource_type = strtolower($resource_type);
}
}
}
/**
* Load template resource handler by type
*
* @param string $resource_type template resource type
* @return object resource handler object
*/
private function loadTemplateResourceHandler ($resource_type)
{
// load resource handler if required
if (!isset($this->smarty->resource_objects[$resource_type])) {
// try registered resource
if (isset($this->smarty->_plugins['resource'][$resource_type])) {
return $this->smarty->resource_objects[$resource_type] = new Smarty_Internal_Resource_Registered($this->smarty);
} else {
// try sysplugins dir
$_resource_class = 'Smarty_Internal_Resource_' . $resource_type;
if ($this->smarty->loadPlugin($_resource_class)) {
return $this->smarty->resource_objects[$resource_type] = new $_resource_class($this->smarty);
} else {
// try plugins dir
$_resource_class = 'Smarty_Resource_' . $resource_type;
if ($this->smarty->loadPlugin($_resource_class)) {
if (class_exists($_resource_class, false)) {
return $this->smarty->resource_objects[$resource_type] = new $_resource_class($this->smarty);
} else {
$this->smarty->register_resource($resource_type,
array("smarty_resource_{$resource_type}_source",
"smarty_resource_{$resource_type}_timestamp",
"smarty_resource_{$resource_type}_secure",
"smarty_resource_{$resource_type}_trusted"));
return $this->smarty->resource_objects[$resource_type] = new Smarty_Internal_Resource_Registered($this->smarty);
}
} else {
// try streams
$_known_stream = stream_get_wrappers();
if (in_array($resource_type, $_known_stream)) {
// is known stream
if ($this->smarty->security) {
$this->smarty->security_handler->isTrustedStream($resource_type);
}
return $this->smarty->resource_objects[$resource_type] = new Smarty_Internal_Resource_Stream($this->smarty);
} else {
throw new Exception('Unkown resource type \'' . $resource_type . '\'');
}
}
}
}
} else {
return $this->smarty->resource_objects[$resource_type];
}
}
/**
* Create property header
*/
public function createPropertyHeader ()
{
$directory_security = $this->smarty->direct_access_security ? "<?php if(!defined('SMARTY_DIR')) exit('no direct access allowed'); ?>\n" : '';
$properties_string = "<?php \$_smarty_tpl->decodeProperties('" . str_replace("'", '"', (serialize($this->properties))) . "'); ?>\n";
return $directory_security . $properties_string;
}
/**
* wrapper for display
*/
public function display ()
{
return $this->smarty->display($this);
}
/**
* wrapper for fetch
*/
public function fetch ()
{
return $this->smarty->fetch($this);
}
/**
* wrapper for is_cached
*/
public function is_cached ()
{
return $this->iscached($this);
}
}
/**
* wrapper for template class
*/
class Smarty_Template extends Smarty_Internal_Template {
}
?>

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smarty_internal_template.php (31 KB)

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