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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 Template
* @author Uwe Tews
*/
/**
* Main class with template data structures and methods
*
* @package Smarty
* @subpackage Template
*
* @property Smarty_Template_Source $source
* @property Smarty_Template_Compiled $compiled
* @property Smarty_Template_Cached $cached
*/
class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
{
/**
* cache_id
* @var string
*/
public $cache_id = null;
/**
* $compile_id
* @var string
*/
public $compile_id = null;
/**
* caching enabled
* @var boolean
*/
public $caching = null;
/**
* cache lifetime in seconds
* @var integer
*/
public $cache_lifetime = null;
/**
* Template resource
* @var string
*/
public $template_resource = null;
/**
* flag if compiled template is invalid and must be (re)compiled
* @var bool
*/
public $mustCompile = null;
/**
* flag if template does contain nocache code sections
* @var bool
*/
public $has_nocache_code = false;
/**
* special compiled and cached template properties
* @var array
*/
public $properties = array('file_dependency' => array(),
'nocache_hash' => '',
'function' => array());
/**
* required plugins
* @var array
*/
public $required_plugins = array('compiled' => array(), 'nocache' => array());
/**
* Global smarty instance
* @var Smarty
*/
public $smarty = null;
/**
* blocks for template inheritance
* @var array
*/
public $block_data = array();
/**
* variable filters
* @var array
*/
public $variable_filters = array();
/**
* optional log of tag/attributes
* @var array
*/
public $used_tags = array();
/**
* internal flag to allow relative path in child template blocks
* @var bool
*/
public $allow_relative_path = false;
/**
* internal capture runtime stack
* @var array
*/
public $_capture_stack = array(0 => 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 Smarty $smarty Smarty instance
* @param Smarty_Internal_Template $_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
* @param bool $_caching use caching?
* @param int $_cache_lifetime cache life-time in seconds
*/
public function __construct($template_resource, $smarty, $_parent = null, $_cache_id = null, $_compile_id = null, $_caching = null, $_cache_lifetime = 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->caching = $_caching === null ? $this->smarty->caching : $_caching;
if ($this->caching === true)
$this->caching = Smarty::CACHING_LIFETIME_CURRENT;
$this->cache_lifetime = $_cache_lifetime === null ? $this->smarty->cache_lifetime : $_cache_lifetime;
$this->parent = $_parent;
// Template resource
$this->template_resource = $template_resource;
// copy block data of template inheritance
if ($this->parent instanceof Smarty_Internal_Template) {
$this->block_data = $this->parent->block_data;
}
}
/**
* Returns if the current template must be compiled by the Smarty compiler
*
* It does compare the timestamps of template source and the compiled templates and checks the force compile configuration
*
* @return boolean true if the template must be compiled
*/
public function mustCompile()
{
if (!$this->source->exists) {
if ($this->parent instanceof Smarty_Internal_Template) {
$parent_resource = " in '$this->parent->template_resource}'";
} else {
$parent_resource = '';
}
throw new SmartyException("Unable to load template {$this->source->type} '{$this->source->name}'{$parent_resource}");
}
if ($this->mustCompile === null) {
$this->mustCompile = (!$this->source->uncompiled && ($this->smarty->force_compile || $this->source->recompiled || $this->compiled->timestamp === false ||
($this->smarty->compile_check && $this->compiled->timestamp < $this->source->timestamp)));
}
return $this->mustCompile;
}
/**
* Compiles the template
*
* If the template is not evaluated the compiled template is saved on disk
*/
public function compileTemplateSource()
{
if (!$this->source->recompiled) {
$this->properties['file_dependency'] = array();
if ($this->source->components) {
// for the extends resource the compiler will fill it
// uses real resource for file dependency
// $source = end($this->source->components);
// $this->properties['file_dependency'][$this->source->uid] = array($this->source->filepath, $this->source->timestamp, $source->type);
} else {
$this->properties['file_dependency'][$this->source->uid] = array($this->source->filepath, $this->source->timestamp, $this->source->type);
}
}
// compile locking
if ($this->smarty->compile_locking && !$this->source->recompiled) {
if ($saved_timestamp = $this->compiled->timestamp) {
touch($this->compiled->filepath);
}
}
// call compiler
try {
$code = $this->compiler->compileTemplate($this);
} catch (Exception $e) {
// restore old timestamp in case of error
if ($this->smarty->compile_locking && !$this->source->recompiled && $saved_timestamp) {
touch($this->compiled->filepath, $saved_timestamp);
}
throw $e;
}
// compiling succeded
if (!$this->source->recompiled && $this->compiler->write_compiled_code) {
// write compiled template
$_filepath = $this->compiled->filepath;
if ($_filepath === false)
throw new SmartyException('getCompiledFilepath() did not return a destination to save the compiled template to');
Smarty_Internal_Write_File::writeFile($_filepath, $code, $this->smarty);
$this->compiled->exists = true;
$this->compiled->isCompiled = true;
}
// release compiler object to free memory
unset($this->compiler);
}
/**
* Writes the cached template output
*
* @return bool
*/
public function writeCachedContent($content)
{
if ($this->source->recompiled || !($this->caching == Smarty::CACHING_LIFETIME_CURRENT || $this->caching == Smarty::CACHING_LIFETIME_SAVED)) {
// don't write cache file
return false;
}
$this->properties['cache_lifetime'] = $this->cache_lifetime;
$this->properties['unifunc'] = 'content_' . str_replace('.', '_', uniqid('', true));
$content = $this->createTemplateCodeFrame($content, true);
$_smarty_tpl = $this;
eval("?>" . $content);
$this->cached->valid = true;
$this->cached->processed = true;
return $this->cached->write($this, $content);
}
/**
* Template code runtime function to get subtemplate content
*
* @param string $template the resource handle of the template file
* @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 integer $caching cache mode
* @param integer $cache_lifetime life time of cache data
* @param array $vars optional variables to assign
* @param int $parent_scope scope in which {include} should execute
* @returns string template content
*/
public function getSubTemplate($template, $cache_id, $compile_id, $caching, $cache_lifetime, $data, $parent_scope)
{
// already in template cache?
if ($this->smarty->allow_ambiguous_resources) {
$_templateId = Smarty_Resource::getUniqueTemplateName($this, $template) . $cache_id . $compile_id;
} else {
$_templateId = $this->smarty->joined_template_dir . '#' . $template . $cache_id . $compile_id;
}
if (isset($_templateId[150])) {
$_templateId = sha1($_templateId);
}
if (isset($this->smarty->template_objects[$_templateId])) {
// clone cached template object because of possible recursive call
$tpl = clone $this->smarty->template_objects[$_templateId];
$tpl->parent = $this;
$tpl->caching = $caching;
$tpl->cache_lifetime = $cache_lifetime;
} else {
$tpl = new $this->smarty->template_class($template, $this->smarty, $this, $cache_id, $compile_id, $caching, $cache_lifetime);
}
// get variables from calling scope
if ($parent_scope == Smarty::SCOPE_LOCAL) {
$tpl->tpl_vars = $this->tpl_vars;
$tpl->tpl_vars['smarty'] = clone $this->tpl_vars['smarty'];
} elseif ($parent_scope == Smarty::SCOPE_PARENT) {
$tpl->tpl_vars = &$this->tpl_vars;
} elseif ($parent_scope == Smarty::SCOPE_GLOBAL) {
$tpl->tpl_vars = &Smarty::$global_tpl_vars;
} elseif (($scope_ptr = $this->getScopePointer($parent_scope)) == null) {
$tpl->tpl_vars = &$this->tpl_vars;
} else {
$tpl->tpl_vars = &$scope_ptr->tpl_vars;
}
$tpl->config_vars = $this->config_vars;
if (!empty($data)) {
// set up variable values
foreach ($data as $_key => $_val) {
$tpl->tpl_vars[$_key] = new Smarty_variable($_val);
}
}
return $tpl->fetch(null, null, null, null, false, false, true);
}
/**
* Template code runtime function to set up an inline subtemplate
*
* @param string $template the resource handle of the template file
* @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 integer $caching cache mode
* @param integer $cache_lifetime life time of cache data
* @param array $vars optional variables to assign
* @param int $parent_scope scope in which {include} should execute
* @param string $hash nocache hash code
* @returns string template content
*/
public function setupInlineSubTemplate($template, $cache_id, $compile_id, $caching, $cache_lifetime, $data, $parent_scope, $hash)
{
$tpl = new $this->smarty->template_class($template, $this->smarty, $this, $cache_id, $compile_id, $caching, $cache_lifetime);
$tpl->properties['nocache_hash'] = $hash;
// get variables from calling scope
if ($parent_scope == Smarty::SCOPE_LOCAL) {
$tpl->tpl_vars = $this->tpl_vars;
$tpl->tpl_vars['smarty'] = clone $this->tpl_vars['smarty'];
} elseif ($parent_scope == Smarty::SCOPE_PARENT) {
$tpl->tpl_vars = &$this->tpl_vars;
} elseif ($parent_scope == Smarty::SCOPE_GLOBAL) {
$tpl->tpl_vars = &Smarty::$global_tpl_vars;
} elseif (($scope_ptr = $this->getScopePointer($parent_scope)) == null) {
$tpl->tpl_vars = &$this->tpl_vars;
} else {
$tpl->tpl_vars = &$scope_ptr->tpl_vars;
}
$tpl->config_vars = $this->config_vars;
if (!empty($data)) {
// set up variable values
foreach ($data as $_key => $_val) {
$tpl->tpl_vars[$_key] = new Smarty_variable($_val);
}
}
return $tpl;
}
/**
* Create code frame for compiled and cached templates
*
* @param string $content optional template content
* @param bool $cache flag for cache file
* @return string
*/
public function createTemplateCodeFrame($content = '', $cache = false)
{
$plugins_string = '';
// include code for plugins
if (!$cache) {
if (!empty($this->required_plugins['compiled'])) {
$plugins_string = '<?php ';
foreach ($this->required_plugins['compiled'] as $tmp) {
foreach ($tmp as $data) {
$file = addslashes($data['file']);
if (is_Array($data['function'])) {
$plugins_string .= "if (!is_callable(array('{$data['function'][0]}','{$data['function'][1]}'))) include '{$file}';\n";
} else {
$plugins_string .= "if (!is_callable('{$data['function']}')) include '{$file}';\n";
}
}
}
$plugins_string .= '?>';
}
if (!empty($this->required_plugins['nocache'])) {
$this->has_nocache_code = true;
$plugins_string .= "<?php echo '/*%%SmartyNocache:{$this->properties['nocache_hash']}%%*/<?php \$_smarty = \$_smarty_tpl->smarty; ";
foreach ($this->required_plugins['nocache'] as $tmp) {
foreach ($tmp as $data) {
$file = addslashes($data['file']);
if (is_Array($data['function'])) {
$plugins_string .= addslashes("if (!is_callable(array('{$data['function'][0]}','{$data['function'][1]}'))) include '{$file}';\n");
} else {
$plugins_string .= addslashes("if (!is_callable('{$data['function']}')) include '{$file}';\n");
}
}
}
$plugins_string .= "?>/*/%%SmartyNocache:{$this->properties['nocache_hash']}%%*/';?>\n";
}
}
// build property code
$this->properties['has_nocache_code'] = $this->has_nocache_code;
$output = '';
if (!$this->source->recompiled) {
$output = "<?php /*%%SmartyHeaderCode:{$this->properties['nocache_hash']}%%*/";
if ($this->smarty->direct_access_security) {
$output .= "if(!defined('SMARTY_DIR')) exit('no direct access allowed');\n";
}
}
if ($cache) {
// remove compiled code of{function} definition
unset($this->properties['function']);
if (!empty($this->smarty->template_functions)) {
// copy code of {function} tags called in nocache mode
foreach ($this->smarty->template_functions as $name => $function_data) {
if (isset($function_data['called_nocache'])) {
foreach ($function_data['called_functions'] as $func_name) {
$this->smarty->template_functions[$func_name]['called_nocache'] = true;
}
}
}
foreach ($this->smarty->template_functions as $name => $function_data) {
if (isset($function_data['called_nocache'])) {
unset($function_data['called_nocache'], $function_data['called_functions'], $this->smarty->template_functions[$name]['called_nocache']);
$this->properties['function'][$name] = $function_data;
}
}
}
}
$this->properties['version'] = Smarty::SMARTY_VERSION;
if (!isset($this->properties['unifunc'])) {
$this->properties['unifunc'] = 'content_' . str_replace('.', '_', uniqid('', true));
}
if (!$this->source->recompiled) {
$output .= "\$_valid = \$_smarty_tpl->decodeProperties(" . var_export($this->properties, true) . ',' . ($cache ? 'true' : 'false') . "); /*/%%SmartyHeaderCode%%*/?>\n";
$output .= '<?php if ($_valid && !is_callable(\'' . $this->properties['unifunc'] . '\')) {function ' . $this->properties['unifunc'] . '($_smarty_tpl) {?>';
}
$output .= $plugins_string;
$output .= $content;
if (!$this->source->recompiled) {
$output .= "<?php }} ?>\n";
}
return $output;
}
/**
* This function is executed automatically when a compiled or cached template file is included
*
* - Decode saved properties from compiled template and cache files
* - Check if compiled or cache file is valid
*
* @param array $properties special template properties
* @param bool $cache flag if called from cache file
* @return bool flag if compiled or cache file is valid
*/
public function decodeProperties($properties, $cache = false)
{
$this->has_nocache_code = $properties['has_nocache_code'];
$this->properties['nocache_hash'] = $properties['nocache_hash'];
if (isset($properties['cache_lifetime'])) {
$this->properties['cache_lifetime'] = $properties['cache_lifetime'];
}
if (isset($properties['file_dependency'])) {
$this->properties['file_dependency'] = array_merge($this->properties['file_dependency'], $properties['file_dependency']);
}
if (!empty($properties['function'])) {
$this->properties['function'] = array_merge($this->properties['function'], $properties['function']);
$this->smarty->template_functions = array_merge($this->smarty->template_functions, $properties['function']);
}
$this->properties['version'] = (isset($properties['version'])) ? $properties['version'] : '';
$this->properties['unifunc'] = $properties['unifunc'];
// check file dependencies at compiled code
$is_valid = true;
if ($this->properties['version'] != Smarty::SMARTY_VERSION) {
$is_valid = false;
} elseif (((!$cache && $this->smarty->compile_check && empty($this->compiled->_properties) && !$this->compiled->isCompiled) || $cache && ($this->smarty->compile_check === true || $this->smarty->compile_check === Smarty::COMPILECHECK_ON)) && !empty($this->properties['file_dependency'])) {
foreach ($this->properties['file_dependency'] as $_file_to_check) {
if ($_file_to_check[2] == 'file' || $_file_to_check[2] == 'php') {
if ($this->source->filepath == $_file_to_check[0] && isset($this->source->timestamp)) {
// do not recheck current template
$mtime = $this->source->timestamp;
} else {
// file and php types can be checked without loading the respective resource handlers
$mtime = @filemtime($_file_to_check[0]);
}
} elseif ($_file_to_check[2] == 'string') {
continue;
} else {
$source = Smarty_Resource::source(null, $this->smarty, $_file_to_check[0]);
$mtime = $source->timestamp;
}
if (!$mtime || $mtime > $_file_to_check[1]) {
$is_valid = false;
break;
}
}
}
if ($cache) {
// CACHING_LIFETIME_SAVED cache expiry has to be validated here since otherwise we'd define the unifunc
if ($this->caching === Smarty::CACHING_LIFETIME_SAVED &&
$this->properties['cache_lifetime'] >= 0 &&
(time() > ($this->cached->timestamp + $this->properties['cache_lifetime']))) {
$is_valid = false;
}
$this->cached->valid = $is_valid;
} else {
$this->mustCompile = !$is_valid; }
// store data in reusable Smarty_Template_Compiled
if (!$cache) {
$this->compiled->_properties = $properties;
}
return $is_valid;
}
/**
* Template code runtime function to create a local Smarty variable for array assignments
*
* @param string $tpl_var tempate variable name
* @param bool $nocache cache mode of variable
* @param int $scope scope of variable
*/
public function createLocalArrayVariable($tpl_var, $nocache = false, $scope = Smarty::SCOPE_LOCAL)
{
if (!isset($this->tpl_vars[$tpl_var])) {
$this->tpl_vars[$tpl_var] = new Smarty_variable(array(), $nocache, $scope);
} else {
$this->tpl_vars[$tpl_var] = clone $this->tpl_vars[$tpl_var];
if ($scope != Smarty::SCOPE_LOCAL) {
$this->tpl_vars[$tpl_var]->scope = $scope;
}
if (!(is_array($this->tpl_vars[$tpl_var]->value) || $this->tpl_vars[$tpl_var]->value instanceof ArrayAccess)) {
settype($this->tpl_vars[$tpl_var]->value, 'array');
}
}
}
/**
* Template code runtime function to get pointer to template variable array of requested scope
*
* @param int $scope requested variable scope
* @return array array of template variables
*/
public function &getScope($scope)
{
if ($scope == Smarty::SCOPE_PARENT && !empty($this->parent)) {
return $this->parent->tpl_vars;
} elseif ($scope == Smarty::SCOPE_ROOT && !empty($this->parent)) {
$ptr = $this->parent;
while (!empty($ptr->parent)) {
$ptr = $ptr->parent;
}
return $ptr->tpl_vars;
} elseif ($scope == Smarty::SCOPE_GLOBAL) {
return Smarty::$global_tpl_vars;
}
$null = null;
return $null;
}
/**
* Get parent or root of template parent chain
*
* @param int $scope pqrent or root scope
* @return mixed object
*/
public function getScopePointer($scope)
{
if ($scope == Smarty::SCOPE_PARENT && !empty($this->parent)) {
return $this->parent;
} elseif ($scope == Smarty::SCOPE_ROOT && !empty($this->parent)) {
$ptr = $this->parent;
while (!empty($ptr->parent)) {
$ptr = $ptr->parent;
}
return $ptr;
}
return null;
}
/**
* [util function] counts an array, arrayaccess/traversable or PDOStatement object
*
* @param mixed $value
* @return int the count for arrays and objects that implement countable, 1 for other objects that don't, and 0 for empty elements
*/
public function _count($value)
{
if (is_array($value) === true || $value instanceof Countable) {
return count($value);
} elseif ($value instanceof IteratorAggregate) {
// Note: getIterator() returns a Traversable, not an Iterator
// thus rewind() and valid() methods may not be present
return iterator_count($value->getIterator());
} elseif ($value instanceof Iterator) {
return iterator_count($value);
} elseif ($value instanceof PDOStatement) {
return $value->rowCount();
} elseif ($value instanceof Traversable) {
return iterator_count($value);
} elseif ($value instanceof ArrayAccess) {
if ($value->offsetExists(0)) {
return 1;
}
} elseif (is_object($value)) {
return count($value);
}
return 0;
}
/**
* runtime error not matching capture tags
*
*/
public function capture_error()
{
throw new SmartyException("Not matching {capture} open/close in \"{$this->template_resource}\"");
}
/**
* Empty cache for this template
*
* @param integer $exp_time expiration time
* @return integer number of cache files deleted
*/
public function clearCache($exp_time=null)
{
Smarty_CacheResource::invalidLoadedCache($this->smarty);
return $this->cached->handler->clear($this->smarty, $this->template_name, $this->cache_id, $this->compile_id, $exp_time);
}
/**
* set Smarty property in template context
*
* @param string $property_name property name
* @param mixed $value value
*/
public function __set($property_name, $value)
{
switch ($property_name) {
case 'source':
case 'compiled':
case 'cached':
case 'compiler':
$this->$property_name = $value;
return;
// FIXME: routing of template -> smarty attributes
default:
if (property_exists($this->smarty, $property_name)) {
$this->smarty->$property_name = $value;
return;
}
}
throw new SmartyException("invalid template property '$property_name'.");
}
/**
* get Smarty property in template context
*
* @param string $property_name property name
*/
public function __get($property_name)
{
switch ($property_name) {
case 'source':
if (strlen($this->template_resource) == 0) {
throw new SmartyException('Missing template name');
}
$this->source = Smarty_Resource::source($this);
// cache template object under a unique ID
// do not cache eval resources
if ($this->source->type != 'eval') {
if ($this->smarty->allow_ambiguous_resources) {
$_templateId = $this->source->unique_resource . $this->cache_id . $this->compile_id;
} else {
$_templateId = $this->smarty->joined_template_dir . '#' . $this->template_resource . $this->cache_id . $this->compile_id;
}
if (isset($_templateId[150])) {
$_templateId = sha1($_templateId);
}
$this->smarty->template_objects[$_templateId] = $this;
}
return $this->source;
case 'compiled':
$this->compiled = $this->source->getCompiled($this);
return $this->compiled;
case 'cached':
if (!class_exists('Smarty_Template_Cached')) {
include SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
}
$this->cached = new Smarty_Template_Cached($this);
return $this->cached;
case 'compiler':
$this->smarty->loadPlugin($this->source->compiler_class);
$this->compiler = new $this->source->compiler_class($this->source->template_lexer_class, $this->source->template_parser_class, $this->smarty);
return $this->compiler;
// FIXME: routing of template -> smarty attributes
default:
if (property_exists($this->smarty, $property_name)) {
return $this->smarty->$property_name;
}
}
throw new SmartyException("template property '$property_name' does not exist.");
}
/**
* Template data object destrutor
*
*/
public function __destruct()
{
if ($this->smarty->cache_locking && isset($this->cached) && $this->cached->is_locked) {
$this->cached->handler->releaseLock($this->smarty, $this->cached);
}
}
}

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