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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  
  10  /**

  11   * class WactTagInfoExtractor.

  12   *

  13   * @package wact

  14   * @version $Id: WactTagInfoExtractor.class.php 5945 2007-06-06 08:31:43Z pachanga $

  15   */
  16  class WactTagInfoExtractor
  17  {
  18    protected $dictionary;
  19    protected $file;
  20    protected $annotations = array();
  21  
  22    function __construct($dict, $file)
  23    {
  24      $this->dictionary = $dict;
  25      $this->file = $file;
  26    }
  27  
  28    function setCurrentFile($file)
  29    {
  30      $this->file = $file;
  31    }
  32  
  33    function annotation($name, $value)
  34    {
  35      $this->annotations[$name] = $value;
  36    }
  37  
  38    function beginClass($class, $parent_class)
  39    {
  40      $this->_validate();
  41  
  42      $tag_aliases = explode(',' , $this->annotations['tag']);
  43      foreach($tag_aliases as $tag)
  44      {
  45        $info = new WactTagInfo(trim($tag), $class);
  46  
  47        $this->_fillTagInfo($info);
  48  
  49        $this->dictionary->registerWactTagInfo($info, $this->file);
  50      }
  51    }
  52  
  53    protected function _fillTagInfo($info)
  54    {
  55      if(isset($this->annotations['suppress_attributes']))
  56      {
  57        $attrs = $this->_processAttributesString($this->annotations['suppress_attributes']);
  58        $info->setSuppressAttributes($attrs);
  59      }
  60  
  61      if(isset($this->annotations['req_attributes']))
  62      {
  63        $attrs = $this->_processAttributesString($this->annotations['req_attributes']);
  64        $info->setRequiredAttributes($attrs);
  65      }
  66  
  67      if(isset($this->annotations['req_const_attributes']))
  68      {
  69        $attrs = $this->_processAttributesString($this->annotations['req_const_attributes']);
  70        $info->setRequiredConstantAttributes($attrs);
  71      }
  72  
  73      if(array_key_exists('forbid_parsing', $this->annotations))
  74        $info->setForbidParsing();
  75  
  76      if(isset($this->annotations['parent_tag_class']))
  77        $info->setParentTagClass($this->annotations['parent_tag_class']);
  78  
  79      if(array_key_exists('restrict_self_nesting', $this->annotations))
  80        $info->setRestrictSelfNesting();
  81  
  82      if(array_key_exists('forbid_end_tag', $this->annotations))
  83        $info->setForbidEndTag();
  84  
  85      if(isset($this->annotations['runat']))
  86        $info->setRunat($this->annotations['runat']);
  87  
  88      if(isset($this->annotations['runat_as']))
  89        $info->setRunatAs($this->annotations['runat_as']);
  90  
  91      // this code added to support old form of DBE expressions in some attributes

  92      // like <core:optional for='var'> should actually be <core:optional for='{$var}'>

  93      if(isset($this->annotations['convert_to_expression']))
  94      {
  95        $attrs = $this->_processAttributesString($this->annotations['convert_to_expression']);
  96        $info->setConvertAttributesToExpressions($attrs);
  97      }
  98    }
  99  
 100    function endClass()
 101    {
 102      $this->annotations = array();
 103    }
 104  
 105    function _processAttributesString($attributes_string)
 106    {
 107      return explode(' ', preg_replace('~\s+~', ' ', trim($attributes_string)));
 108    }
 109  
 110    function _validate()
 111    {
 112      if(!file_exists($this->file))
 113        throw new WactException('File not found', array('file' => $this->file));
 114  
 115      if(!isset($this->annotations['tag']))
 116        throw new WactException('Annotation not found in file',
 117                                array('annotation' => 'tag', 'file' => $this->file));
 118    }
 119  }