mirror of
https://github.com/smarty-php/smarty.git
synced 2025-10-31 12:21:36 +01:00
672 lines
28 KiB
PHP
672 lines
28 KiB
PHP
<?php
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/**
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* Smarty Internal Plugin Template
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*
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* This files contains the Smarty template engine
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*
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* @package Smarty
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* @subpackage Templates
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* @author Uwe Tews
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*/
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/**
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* Main class with template data structures and methods
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*/
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class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
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// object cache
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public $resource_objects = array();
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public $compiler_object = null;
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public $cacher_object = null;
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// Smarty parameter
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public $cache_id = null;
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public $compile_id = null;
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public $caching = null;
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public $caching_lifetime = null;
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public $cacher_class = null;
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public $caching_type = null;
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public $force_compile = null;
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// Template resource
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public $template_resource = null;
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public $resource_type = null;
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public $resource_name = null;
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private $usesCompiler = null;
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private $isEvaluated = null;
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// Template source
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public $template_filepath = null;
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public $template_source = null;
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private $template_timestamp = null;
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// Compiled template
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private $compiled_filepath = null;
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public $compiled_template = null;
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private $compiled_timestamp = null;
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public $compile_time = 0;
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public $mustCompile = null;
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public $suppressHeader = false;
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public $extract_code = false;
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public $extracted_compiled_code = '';
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// Rendered content
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public $rendered_content = null;
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// Cache file
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private $cached_filepath = null;
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private $cached_timestamp = null;
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private $isCached = null;
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public $cache_time = 0;
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// template variables
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public $tpl_vars = array();
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public $parent = null;
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public $config_vars = array();
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// storage for plugin
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public $plugin_data = array();
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// special properties
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public $properties = array();
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// storage for block data
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public $block_data = array();
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public $render_time = 0;
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/**
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* Create template data object
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*
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* Some of the global Smarty settings copied to template scope
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* It load the required template resources and cacher plugins
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*
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* @param string $template_resource template resource string
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* @param object $_parent back pointer to parent object with variables or null
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* @param mixed $_cache_id cache id or null
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* @param mixed $_compile_id compile id or null
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*/
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public function __construct($template_resource, $smarty, $_parent = null, $_cache_id = null, $_compile_id = null)
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{
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$this->smarty = $smarty;
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// Smarty parameter
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$this->cache_id = $_cache_id === null ? $this->smarty->cache_id : $_cache_id;
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$this->compile_id = $_compile_id === null ? $this->smarty->compile_id : $_compile_id;
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$this->force_compile = $this->smarty->force_compile;
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$this->caching = $this->smarty->caching;
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$this->caching_lifetime = $this->smarty->caching_lifetime;
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$this->cacher_class = $this->smarty->cacher_class;
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$this->caching_type = $this->smarty->default_caching_type;
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$this->security = $this->smarty->security;
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$this->cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($this->caching_type);
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$this->parent = $_parent;
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$this->properties['file_dependency'] = array();
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// dummy local smarty variable
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$this->tpl_vars['smarty'] = new Smarty_Variable;
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// Template resource
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$this->template_resource = $template_resource;
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// parse resource name
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if (!$this->parseResourceName ($template_resource)) {
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throw new Exception ("Unable to parse resource name \"{$template_resource}\"");
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}
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// load cacher
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if ($this->caching) {
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$this->smarty->loadPlugin($this->cacher_class);
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$this->cacher_object = new $this->cacher_class($this->smarty);
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}
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// load cache resource
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if (!$this->isEvaluated() && $this->caching && !isset($this->smarty->cache_resource_objects[$this->caching_type])) {
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$this->smarty->loadPlugin($this->cache_resource_class);
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$this->smarty->cache_resource_objects[$this->caching_type] = new $this->cache_resource_class($this->smarty);
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}
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if ($this->smarty->direct_access_security) {
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$this->dir_acc_sec_string = "<?php if(!defined('SMARTY_DIR')) exit('no direct access allowed'); ?>\n";
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} else {
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$this->dir_acc_sec_string = '';
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}
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}
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/**
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* Returns the template filepath
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*
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* The template filepath is determined by the actual resource handler
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*
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* @return string the template filepath
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*/
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public function getTemplateFilepath ()
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{
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return $this->template_filepath === null ?
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$this->template_filepath = $this->resource_objects[$this->resource_type]->getTemplateFilepath($this) :
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$this->template_filepath;
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}
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/**
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* Returns the timpestamp of the template source
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*
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* The template timestamp is determined by the actual resource handler
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*
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* @return integer the template timestamp
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*/
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public function getTemplateTimestamp ()
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{
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return $this->template_timestamp === null ?
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$this->template_timestamp = $this->resource_objects[$this->resource_type]->getTemplateTimestamp($this) :
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$this->template_timestamp;
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}
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/**
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* Returns the template source code
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*
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* The template source is being read by the actual resource handler
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*
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* @return string the template source
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*/
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public function getTemplateSource ()
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{
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if ($this->template_source === null) {
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$this->resource_objects[$this->resource_type]->getTemplateSource($this);
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}
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return $this->template_source;
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}
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/**
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* Returns if the template resource uses the Smarty compiler
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*
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* The status is determined by the actual resource handler
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*
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* @return boolean true if the template will use the compiler
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*/
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public function usesCompiler ()
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{
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return $this->usesCompiler === null ?
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$this->usesCompiler = $this->resource_objects[$this->resource_type]->usesCompiler() :
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$this->usesCompiler;
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}
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/**
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* Returns if the compiled template is stored or just evaluated in memory
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*
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* The status is determined by the actual resource handler
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*
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* @return boolean true if the compiled template has to be evaluated
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*/
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public function isEvaluated ()
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{
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return $this->isEvaluated === null ?
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$this->isEvaluated = $this->resource_objects[$this->resource_type]->isEvaluated() :
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$this->isEvaluated;
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}
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/**
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* Returns if the current template must be compiled by the Smarty compiler
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*
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* It does compare the timestamps of template source and the compiled templates and checks the force compile configuration
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*
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* @return boolean true if the template must be compiled
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*/
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public function mustCompile ()
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{
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if ($this->mustCompile === null) {
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$this->mustCompile = ($this->usesCompiler() && ($this->force_compile || $this->isEvaluated() || ($this->smarty->compile_check && $this->getCompiledTimestamp () !== $this->getTemplateTimestamp ())));
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if ($this->mustCompile) {
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return true;
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}
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if ($this->smarty->compile_check) {
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// read compiled template to check file dependencies
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if ($this->compiled_template !== true && file_exists($this->getCompiledFilepath())) {
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$this->compiled_template = !$this->isEvaluated() ? file_get_contents($this->getCompiledFilepath()):'';
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if (preg_match('~\<\?php /\*(.*)\*/ \?\>~', $this->compiled_template, $_matches)) {
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$this->properties = unserialize($_matches[1]);
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if (!empty($this->properties['function'])) {
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foreach ($this->properties['function'] as $_name => $_data) {
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$this->smarty->template_functions[$_name]['compiled'] = str_replace(array('_%n'), array("\n"), $_data['compiled']);
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$this->smarty->template_functions[$_name]['parameter'] = $_data['parameter'];
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}
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}
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if (!empty($this->properties['file_dependency'])) {
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foreach ($this->properties['file_dependency'] as $_file_to_check) {
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If (filemtime($_file_to_check[0]) != $_file_to_check[1]) {
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$this->properties['file_dependency'] = array();
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$this->mustCompile = true;
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return $this->mustCompile;
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}
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}
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}
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}
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}
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}
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}
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return $this->mustCompile;
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}
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/**
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* Returns the compiled template filepath
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*
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* @return string the template filepath
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*/
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public function getCompiledFilepath ()
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{
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return $this->compiled_filepath === null ?
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($this->compiled_filepath = !$this->isEvaluated() ? $this->resource_objects[$this->resource_type]->getCompiledFilepath($this) : false) :
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$this->compiled_filepath;
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}
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/**
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* Returns the timpestamp of the compiled template
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*
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* @return integer the template timestamp
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*/
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public function getCompiledTimestamp ()
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{
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return $this->compiled_timestamp === null ?
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($this->compiled_timestamp = (!$this->isEvaluated() && file_exists($this->getCompiledFilepath())) ? filemtime($this->getCompiledFilepath()) : false) :
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$this->compiled_timestamp;
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}
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/**
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* Returns the compiled template
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*
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* It checks if the template must be compiled or just read from the template resource
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*
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* @return string the compiled template
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*/
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public function getCompiledTemplate ()
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{
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if ($this->compiled_template === null) {
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// see if template needs compiling.
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if ($this->mustCompile()) {
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$this->compileTemplateSource();
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} else {
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$this->compiled_template = !$this->isEvaluated() && $this->usesCompiler() ? file_get_contents($this->getCompiledFilepath()) : false;
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if (preg_match('~\<\?php /\*(.*)\*/ \?\>~', $this->compiled_template, $_matches)) {
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$this->properties = unserialize($_matches[1]);
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if (!empty($this->properties['function'])) {
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foreach ($this->properties['function'] as $_name => $_data) {
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$this->smarty->template_functions[$_name]['compiled'] = str_replace(array('_%n'), array("\n"), $_data['compiled']);
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$this->smarty->template_functions[$_name]['parameter'] = $_data['parameter'];
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}
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}
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}
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}
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}
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return $this->compiled_template;
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}
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/**
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* Compiles the template
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*
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* If the template is not evaluated the compiled template is saved on disk
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*/
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public function compileTemplateSource ()
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{
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$_start_time = $this->_get_time();
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// compile template
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if (!is_object($this->compiler_object)) {
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// load compiler
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$this->smarty->loadPlugin('Smarty_Internal_CompileBase');
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$this->smarty->loadPlugin('Smarty_Internal_TemplateCompilerBase');
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$this->smarty->loadPlugin($this->resource_objects[$this->resource_type]->compiler_class);
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$this->compiler_object = new $this->resource_objects[$this->resource_type]->compiler_class($this->resource_objects[$this->resource_type]->template_lexer_class, $this->resource_objects[$this->resource_type]->template_parser_class, $this->smarty);
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}
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if (!is_object($this->smarty->write_file_object)) {
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$this->smarty->loadPlugin("Smarty_Internal_Write_File");
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$this->smarty->write_file_object = new Smarty_Internal_Write_File;
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}
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// call compiler
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if ($this->compiler_object->compileTemplate($this)) {
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// compiling succeded
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if (!$this->isEvaluated()) {
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// build template property string
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$this->properties_string = '<?php /*' . serialize($this->properties) . "*/ ?>\n";
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// write compiled template
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$this->smarty->write_file_object->writeFile($this->getCompiledFilepath(), $this->properties_string . $this->dir_acc_sec_string . $this->getCompiledTemplate());
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// make template and compiled file timestamp match
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touch($this->getCompiledFilepath(), $this->getTemplateTimestamp());
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}
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} else {
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// error compiling template
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throw new Exception("Error compiling template {$this->getTemplateFilepath ()}");
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return false;
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}
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$this->compile_time += $this->_get_time() - $_start_time;
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}
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/**
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* Returns the filepath of the cached template output
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*
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* The filepath is determined by the actual resource handler of the cacher
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*
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* @return string the cache filepath
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*/
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public function getCachedFilepath ()
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{
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return $this->cached_filepath === null ?
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$this->cached_filepath = ($this->isEvaluated() || !$this->caching) ? false : $this->smarty->cache_resource_objects[$this->caching_type]->getCachedFilepath($this) :
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$this->cached_filepath;
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}
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/**
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* Returns the timpestamp of the cached template output
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*
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* The timestamp is determined by the actual resource handler of the cacher
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*
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* @return integer the template timestamp
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*/
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public function getCachedTimestamp ()
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{
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return $this->cached_timestamp === null ?
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$this->cached_timestamp = ($this->isEvaluated() || !$this->caching) ? false : $this->smarty->cache_resource_objects[$this->caching_type]->getCachedTimestamp($this) :
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$this->cached_timestamp;
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}
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/**
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* Returns the cached template output
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*
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* @return string |booelan the template content or false if the file does not exist
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*/
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public function getCachedContent ()
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{
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return $this->rendered_content === null ?
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$this->rendered_content = ($this->isEvaluated() || !$this->caching) ? false : $this->cacher_object->getCachedContents($this) :
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$this->rendered_content;
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}
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/**
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* Writes the cached template output
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*/
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public function writeCachedContent ()
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{
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// build file dependency string
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$this->properties['caching_lifetime'] = $this->caching_lifetime;
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$this->properties_string = '<?php /*' . serialize($this->properties) . "*/ ?>\n";
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$this->rendered_content = $this->properties_string . $this->dir_acc_sec_string . $this->rendered_content;
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return ($this->isEvaluated() || !$this->caching) ? false : $this->cacher_object->writeCachedContent($this);
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}
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/**
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* Checks of a valid version redered HTML output is in the cache
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*
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* If the cache is valid the contents is stored in the template object
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*
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* @return boolean true if cache is valid
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*/
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public function isCached ()
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{
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if ($this->isCached === null) {
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$this->isCached = false;
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if ($this->caching && !$this->isEvaluated() && !$this->force_compile) {
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if ($this->getCachedTimestamp() === false) {
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return $this->isCached;
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}
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if (/*$this->getTemplateTimestamp() <= $this->getCachedTimestamp() && */
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($this->caching == SMARTY_CACHING_LIVETIME_SAVED || ($this->caching == SMARTY_CACHING_LIFETIME_CURRENT && (time() <= ($this->getCachedTimestamp() + $this->caching_lifetime) || $this->caching_lifetime < 0)))) {
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$this->rendered_content = $this->cacher_object->getCachedContents($this);
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$_found = preg_match('~\<\?php /\*(.*)\*/ \?\>~', $this->rendered_content, $_matches);
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if ($_found) {
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$this->properties = unserialize($_matches[1]);
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if ($this->caching == SMARTY_CACHING_LIVETIME_SAVED && (time() > ($this->getCachedTimestamp() + $this->properties['caching_lifetime']) || $this->properties['caching_lifetime'] < 0)) {
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$this->rendered_content = null;
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return $this->isCached;
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}
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if (!empty($this->properties['file_dependency']) && $this->smarty->compile_check) {
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foreach ($this->properties['file_dependency'] as $file_to_check) {
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If (filemtime($file_to_check[0]) > $this->getCachedTimestamp()) {
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$this->rendered_content = null;
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return $this->isCached;
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}
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}
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}
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}
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$this->isCached = true;
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}
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}
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}
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return $this->isCached;
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}
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/**
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* Render the output using the compiled template or the PHP template source
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*
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* The rendering process is accomplished by just including the PHP files.
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* The only exceptions are evaluated templates (string template). Their code has
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* to be evaluated
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*/
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public function renderTemplate ()
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{
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if ($this->usesCompiler()) {
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if ($this->mustCompile()) {
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$this->compileTemplateSource();
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}
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$_smarty_tpl = $this;
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$_start_time = $this->_get_time();
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ob_start();
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if ($this->isEvaluated()) {
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eval("?>" . $this->compiled_template);
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} else {
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include($this->getCompiledFilepath ());
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}
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} else {
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// PHP template
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$_start_time = $this->_get_time();
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// Smarty variables as objects extract as objects
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$this->smarty->loadPlugin('Smarty_Internal_PHPVariableObjects');
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$_ptr = $this;
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do {
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foreach ($_ptr->tpl_vars as $_smarty_var => $_var_object) {
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if (isset($_var_object->value)) {
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$$_smarty_var = Smarty_Internal_PHPVariableObjects::createPHPVarObj($_var_object->value);
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}
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}
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$_ptr = $_ptr->parent;
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} while ($_ptr != null);
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unset ($_smarty_var, $_smarty_value, $_ptr);
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// special object for handling functions in PHP
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$_f = Smarty_Internal_PHPVariableObjects::createPHPVarObj(new PHP_Function_Handler($this), true);
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ob_start();
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// include PHP template
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include($this->getTemplateFilepath ());
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}
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$this->render_time += $this->_get_time() - $_start_time;
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$this->rendered_content = ob_get_clean();
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if (!$this->isEvaluated) {
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$this->properties['file_dependency'][] = array($this->getTemplateFilepath(), $this->getTemplateTimestamp());
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}
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if ($this->parent instanceof Smarty_Template or $this->parent instanceof Smarty_Internal_Template) {
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$this->parent->properties['file_dependency'] = array_merge($this->parent->properties['file_dependency'], $this->properties['file_dependency']);
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}
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// write to cache when nessecary
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if (!$this->isEvaluated() && $this->caching) {
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$this->properties['file_dependency'] = array_unique($this->properties['file_dependency']);
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// write rendered template
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$this->writeCachedContent($this);
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}
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}
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/* Include subtemplates ({include} tag
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*/
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function processInclude()
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{
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$_smarty_tpl = $this;
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$_start_time = $this->_get_time();
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eval("?>" . $this->getCompiledTemplate());
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|
$this->render_time += $this->_get_time() - $_start_time;
|
|
}
|
|
/**
|
|
* Returns the rendered HTML output
|
|
*
|
|
* If the cache is valid the cached content is used, otherwise
|
|
* the output is rendered from the compiled template or PHP template source
|
|
*
|
|
* @return string rendered HTML output
|
|
*/
|
|
public function getRenderedTemplate ()
|
|
{
|
|
// disable caching for evaluated code
|
|
if ($this->isEvaluated()) {
|
|
$this->caching = false;
|
|
}
|
|
// checks if template exists
|
|
$this->getTemplateFilepath();
|
|
// read from cache or render
|
|
if ($this->rendered_content === null && !$this->isCached()) {
|
|
// render template (not loaded and not in cache)
|
|
$this->renderTemplate();
|
|
}
|
|
if ($this->caching && $this->usesCompiler()) {
|
|
// cached output could contain nocache code
|
|
$_start_time = $this->_get_time();
|
|
$_smarty_tpl = $this;
|
|
ob_start();
|
|
eval("?>" . $this->rendered_content);
|
|
$this->updateParentVariables();
|
|
$this->cache_time += $this->_get_time() - $_start_time;
|
|
return (isset($this->smarty->autoload_filters['output']) || isset($this->smarty->registered_filters['output']))?
|
|
$this->smarty->filter_handler->execute('output', ob_get_clean()) : ob_get_clean();
|
|
} else {
|
|
$this->updateParentVariables();
|
|
return (isset($this->smarty->autoload_filters['output']) || isset($this->smarty->registered_filters['output']))?
|
|
$this->smarty->filter_handler->execute('output', $this->rendered_content) : $this->rendered_content;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* parse a template resource in its name and type
|
|
*
|
|
* @param string $template_resource template resource specification
|
|
*/
|
|
private function parseResourceName($template_resource)
|
|
{
|
|
if (empty($template_resource))
|
|
return false;
|
|
if (strpos($template_resource, ':') === false) {
|
|
// no resource given, use default
|
|
$this->resource_type = $this->smarty->default_resource_type;
|
|
$this->resource_name = $template_resource;
|
|
} else {
|
|
// get type and name from path
|
|
list($this->resource_type, $this->resource_name) = explode(':', $template_resource, 2);
|
|
if (strlen($this->resource_type) == 1) {
|
|
// 1 char is not resource type, but part of filepath
|
|
$this->resource_type = $this->smarty->default_resource_type;
|
|
$this->resource_name = $template_resource;
|
|
} else {
|
|
$this->resource_type = strtolower($this->resource_type);
|
|
}
|
|
}
|
|
// load resource handler if required
|
|
if (!isset($this->resource_objects[$this->resource_type])) {
|
|
// try sysplugins dir first
|
|
$_resource_class = "Smarty_Internal_Resource_{$this->resource_type}";
|
|
if ($this->smarty->loadPlugin($_resource_class)) {
|
|
$this->resource_objects[$this->resource_type] = new $_resource_class($this->smarty);
|
|
} else {
|
|
// try plugins dir
|
|
$_resource_class = "Smarty_Resource_{$this->resource_type}";
|
|
if ($this->smarty->loadPlugin($_resource_class)) {
|
|
$this->resource_objects[$this->resource_type] = new $_resource_class($this->smarty);
|
|
} else {
|
|
// try streams
|
|
$_known_stream = stream_get_wrappers();
|
|
if (in_array($this->resource_type, $_known_stream)) {
|
|
// is known stream
|
|
if ($this->smarty->security) {
|
|
$this->smarty->security_handler->isTrustedStream($this->resource_type);
|
|
}
|
|
if (!isset($this->resource_objects['stream'])) {
|
|
$this->smarty->loadPlugin('Smarty_Internal_Resource_Stream');
|
|
$this->resource_objects['stream'] = new Smarty_Internal_Resource_Stream($this->smarty);
|
|
}
|
|
$this->resource_type = 'stream';
|
|
$this->resource_name = str_replace(':', '://', $template_resource);
|
|
} else {
|
|
throw new Exception('Unkown resource type \'' . $this->resource_type . '\'');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// cache template object under a unique ID
|
|
// do not cache string resources
|
|
if ($this->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 .= DIRECTORY_SEPARATOR;
|
|
}
|
|
|
|
$_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 $_filepath;
|
|
}
|
|
}
|
|
}
|
|
throw new Exception("Unable to load template \"{$file}\"");
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Update Smarty variables in parent variable object
|
|
*/
|
|
public function updateParentVariables ($scope = SMARTY_LOCAL_SCOPE)
|
|
{
|
|
foreach ($this->tpl_vars as $_key => $_value) {
|
|
// copy global vars back to parent
|
|
if (isset($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 $_value;
|
|
$this->smarty->tpl_vars[$_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 $_value;
|
|
$_ptr->tpl_vars[$_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 $_value;
|
|
}
|
|
$this->smarty->global_tpl_vars[$_key]->scope = SMARTY_LOCAL_SCOPE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* wrapper for template class
|
|
*/
|
|
class Smarty_Template extends Smarty_Internal_Template {
|
|
}
|
|
|
|
?>
|