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   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,'',$this->_options['file_path']),'\/');
 118                  if(AK_COMPILED_VIEWS_DIR && !strstr($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      function _saveCompiledTemplate()
 159      {
 160          $options = array('base_path' => (AK_COMPILED_VIEWS_DIR ? AK_TMP_DIR : AK_BASE_DIR));
 161          if(defined('AK_UPLOAD_FILES_USING_FTP') && AK_UPLOAD_FILES_USING_FTP && !strstr($options['base_path'], AK_BASE_DIR)){
 162              $options['ftp'] = false;
 163          }
 164          Ak::file_put_contents($this->_getCompiledTemplatePath(), $this->_options['code'], $options);
 165      }
 166  }
 167  
 168  
 169  ?>