lib/AkActionView/AkPhpTemplateHandler.php

   1 <?php
   2 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   3
   4 // +----------------------------------------------------------------------+
   5 // | Akelos Framework - http://www.akelos.org                             |
   6 // +----------------------------------------------------------------------+
   7 // | Copyright (c) 2002-2006, Akelos Media, S.L.  & Bermi Ferrer Martinez |
   8 // | Released under the GNU Lesser General Public License, see LICENSE.txt|
   9 // +----------------------------------------------------------------------+
  10
  11 /**
  12  * @package ActionView
  13  * @subpackage TemplateEngines
  14  * @author Bermi Ferrer <bermi a.t akelos c.om>
  15  * @copyright Copyright (c) 2002-2006, Akelos Media, S.L. http://www.akelos.org
  16  * @license GNU Lesser General Public License <http://www.gnu.org/copyleft/lesser.html>
  17  */
  18
  19 defined('AK_DEFAULT_TEMPLATE_ENGINE') ? null : define('AK_DEFAULT_TEMPLATE_ENGINE', 'AkSintags');
  20 defined('AK_TEMPLATE_SECURITY_CHECK') ? null : define('AK_TEMPLATE_SECURITY_CHECK', true);
  21 defined('AK_PHP_CODE_SANITIZER_FOR_TEMPLATE_HANDLER')? null : define('AK_PHP_CODE_SANITIZER_FOR_TEMPLATE_HANDLER', 'AkPhpCodeSanitizer');
  22
  23 class AkPhpTemplateHandler
  24 {
  25     var $_options = array();
  26     var $_AkActionView;
  27     var $_templateEngine = AK_DEFAULT_TEMPLATE_ENGINE;
  28     var $_codeSanitizerClass = AK_PHP_CODE_SANITIZER_FOR_TEMPLATE_HANDLER;
  29
  30     function AkPhpTemplateHandler(&$AkActionView)
  31     {
  32         $this->_AkActionView =& $AkActionView;
  33     }
  34
  35     function render(&$____code, $____local_assigns, $____file_path)
  36     {
  37         $this->_options['variables'] = $____local_assigns;
  38         $this->_options['code'] =& $____code;
  39         $this->_options['functions'] = array('');
  40         $this->_options['file_path'] = $____file_path;
  41
  42         if($this->_templateNeedsCompilation()){
  43             if(!class_exists($this->_templateEngine)){
  44                 require_once(AK_LIB_DIR.DS.'AkActionView'.DS.'TemplateEngines'.DS.$this->_templateEngine.'.php');
  45             }
  46             $____template_engine_name = $this->_templateEngine;
  47
  48             $TemplateEngine =& new $____template_engine_name();
  49
  50             $TemplateEngine->init(array(
  51             'code' => $____code,
  52             ));
  53
  54             $____code = $TemplateEngine->toPhp();
  55
  56             if($____code === false){
  57                 trigger_error(join("\n",$TemplateEngine->getErrors()), E_USER_ERROR);
  58                 return false;
  59             }
  60             if(AK_TEMPLATE_SECURITY_CHECK && $this->_templateNeedsValidation()){
  61                 if(!$this->_assertForValidTemplate()){
  62                     return false;
  63                 }
  64             }
  65             $this->_saveCompiledTemplate();
  66         }
  67
  68         (array)$____local_assigns;
  69         extract($____local_assigns, EXTR_SKIP);
  70         ob_start();
  71         include($this->_getCompiledTemplatePath());
  72
  73         !empty($shared) ? $this->_AkActionView->addSharedAttributes($shared) : null;
  74
  75         return  ob_get_clean();
  76     }
  77
  78
  79     function _assertForValidTemplate()
  80     {
  81         static $CodeSanitizer;
  82         if(empty($CodeSanitizer)){
  83             if($this->_codeSanitizerClass == 'AkPhpCodeSanitizer'){
  84                 require_once(AK_LIB_DIR.DS.'AkActionView'.DS.'AkPhpCodeSanitizer.php');
  85             }
  86             $class = $this->_codeSanitizerClass;
  87             $CodeSanitizer = new $class();
  88         }
  89         $CodeSanitizer->setOptions($this->_options);
  90         return $CodeSanitizer->isCodeSecure();
  91     }
  92
  93     function _templateNeedsCompilation()
  94     {
  95         if(!file_exists($this->_getCompiledTemplatePath())){
  96             return true;
  97         }
  98         $tpl_time = @filemtime($this->_getTemplatePath());
  99         $compiled_tpl_time = filemtime($this->_getCompiledTemplatePath());
 100         if($tpl_time > $compiled_tpl_time){
 101             return true;
 102         }
 103
 104         return false;
 105     }
 106
 107     function _templateNeedsValidation()
 108     {
 109         return true;
 110     }
 111
 112     function _getTemplateBasePath()
 113     {
 114         if(empty($this->_options['template_base_path'])){
 115             $template_file_name = $this->_getTemplateFilename();
 116             if(!empty($template_file_name)){
 117                 $this->_options['template_base_path'] = rtrim(str_replace($template_file_name,'',$this->_options['file_path']),'\/');
 118                 if(defined('AK_COMPILED_VIEWS_DIR') && !strstr($this->_options['template_base_path'], AK_TMP_DIR)){
 119                     $this->_options['template_base_path'] = str_replace(AK_BASE_DIR, AK_COMPILED_VIEWS_DIR, $this->_options['template_base_path']);
 120                 }
 121             }else{
 122                 $this->_options['template_base_path'] = AK_COMPILED_VIEWS_DIR;
 123             }
 124         }
 125         return $this->_options['template_base_path'];
 126     }
 127
 128
 129     function _getTemplatePath()
 130     {
 131         return $this->_options['file_path'];
 132     }
 133
 134     function _getTemplateFilename()
 135     {
 136         $this->_options['template_filename'] = empty($this->_options['template_filename']) && preg_match('/[^\/^\\\]+$/',$this->_options['file_path'],$match) ? $match[0] : @$this->_options['template_filename'];
 137         return $this->_options['template_filename'];
 138     }
 139
 140     function _getCompiledTemplateBasePath()
 141     {
 142         if(empty($this->_options['compiled_template_base_path'])){
 143             $this->_options['compiled_template_base_path'] = $this->_getTemplateBasePath().DS.'compiled';
 144         }
 145         return $this->_options['compiled_template_base_path'];
 146     }
 147
 148     function _getCompiledTemplatePath()
 149     {
 150         if(empty($this->_options['compiled_file_name'])){
 151             $template_filename = $this->_getTemplateFilename();
 152             $this->_options['compiled_file_name'] =  $this->_getCompiledTemplateBasePath().DS.
 153             (empty($template_filename) ? 'tpl_'.md5($this->_options['code']) : $template_filename).'.php';
 154         }
 155         return $this->_options['compiled_file_name'];
 156     }
 157
 158
 159
 160     function _saveCompiledTemplate()
 161     {
 162         Ak::file_put_contents($this->_getCompiledTemplatePath(),$this->_options['code']);
 163     }
 164 }
 165
 166
 167 ?>