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<?php
 /**
 * Smarty Internal Plugin Resource PHP
 *
 * Implements the file system as resource for PHP templates
 *
 * @package Smarty
 * @subpackage TemplateResources
 * @author Uwe Tews
 * @author Rodney Rehm
 */
 class Smarty_Internal_Resource_PHP extends Smarty_Resource_Uncompiled
 {
 /**
 * container for short_open_tag directive's value before executing PHP templates
 * @var string
 */
 protected $short_open_tag;
 
 /**
 * Create a new PHP Resource
 *
 */
 public function __construct()
 {
 $this->short_open_tag = ini_get( 'short_open_tag' );
 }
 
 /**
 * populate Source Object with meta data from Resource
 *
 * @param  Smarty_Template_Source   $source    source object
 * @param  Smarty_Internal_Template $_template template object
 * @return void
 */
 public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)
 {
 $source->filepath = $this->buildFilepath($source, $_template);
 
 if ($source->filepath !== false) {
 if (is_object($source->smarty->security_policy)) {
 $source->smarty->security_policy->isTrustedResourceDir($source->filepath);
 }
 
 $source->uid = sha1($source->filepath);
 if ($source->smarty->compile_check) {
 $source->timestamp = @filemtime($source->filepath);
 $source->exists = !!$source->timestamp;
 }
 }
 }
 
 /**
 * populate Source Object with timestamp and exists from Resource
 *
 * @param  Smarty_Template_Source $source source object
 * @return void
 */
 public function populateTimestamp(Smarty_Template_Source $source)
 {
 $source->timestamp = @filemtime($source->filepath);
 $source->exists = !!$source->timestamp;
 }
 
 /**
 * Load template's source from file into current template object
 *
 * @param  Smarty_Template_Source $source source object
 * @return string                 template source
 * @throws SmartyException        if source cannot be loaded
 */
 public function getContent(Smarty_Template_Source $source)
 {
 if ($source->timestamp) {
 return '';
 }
 throw new SmartyException("Unable to read template {$source->type} '{$source->name}'");
 }
 
 /**
 * Render and output the template (without using the compiler)
 *
 * @param  Smarty_Template_Source   $source    source object
 * @param  Smarty_Internal_Template $_template template object
 * @return void
 * @throws SmartyException          if template cannot be loaded or allow_php_templates is disabled
 */
 public function renderUncompiled(Smarty_Template_Source $source, Smarty_Internal_Template $_template)
 {
 $_smarty_template = $_template;
 
 if (!$source->smarty->allow_php_templates) {
 throw new SmartyException("PHP templates are disabled");
 }
 if (!$source->exists) {
 if ($_template->parent instanceof Smarty_Internal_Template) {
 $parent_resource = " in '{$_template->parent->template_resource}'";
 } else {
 $parent_resource = '';
 }
 throw new SmartyException("Unable to load template {$source->type} '{$source->name}'{$parent_resource}");
 }
 
 // prepare variables
 extract($_template->getTemplateVars());
 
 // include PHP template with short open tags enabled
 ini_set( 'short_open_tag', '1' );
 include($source->filepath);
 ini_set( 'short_open_tag', $this->short_open_tag );
 }
 }
 
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