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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  require_once('limb/wact/src/compiler/filter/WactFilterDictionary.class.php');
  11  require_once 'limb/wact/src/compiler/property/WactPropertyDictionary.class.php';
  12  require_once 'limb/wact/src/compiler/tag_node/WactTagDictionary.class.php';
  13  require_once 'limb/wact/src/compiler/WactCompiler.class.php';
  14  
  15  /**

  16   * class WactDictionaryHolder.

  17   *

  18   * @package wact

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

  20   */
  21  class WactDictionaryHolder
  22  {
  23    protected $dictionaries;
  24    protected $config;
  25    protected static $instance = null;
  26  
  27    function __construct($config)
  28    {
  29      $this->config = $config;
  30    }
  31  
  32    static function initialize($config)
  33    {
  34      if(isset(self :: $instance))
  35        return self :: $instance;
  36  
  37      self :: $instance = new WactDictionaryHolder($config);
  38      self :: $instance->initializeAllDictionaries();
  39  
  40      return self :: $instance;
  41    }
  42  
  43    // for testing purpose

  44    static function resetInstance()
  45    {
  46      self :: $instance = null;
  47    }
  48  
  49    static function instance()
  50    {
  51      if(!isset(self :: $instance))
  52        throw new WactException('WactDictionaryHolder not initialized yet!');
  53  
  54      return self :: $instance;
  55    }
  56  
  57    function initializeAllDictionaries()
  58    {
  59      $this->initializeWactFilterDictionary();
  60      $this->initializePropertyDictionary();
  61      $this->initializeTagDictionary();
  62    }
  63  
  64    function initializeWactFilterDictionary()
  65    {
  66      $this->_initializeDictionary('filter', 'WactFilterDictionary', 'filter');
  67    }
  68  
  69    function initializePropertyDictionary()
  70    {
  71      $this->_initializeDictionary('property', 'WactPropertyDictionary', 'prop');
  72    }
  73  
  74    function initializeTagDictionary()
  75    {
  76      $this->_initializeDictionary('tag', 'WactTagDictionary', 'tag');
  77    }
  78  
  79    function getDictionary($name)
  80    {
  81      if(isset($this->dictionaries[$name]))
  82         return $this->dictionaries[$name];
  83  
  84      throw new WactException('Dictionary "' . $name . '" is not initialized yet!');
  85    }
  86  
  87    function getFilterDictionary()
  88    {
  89      return $this->getDictionary('filter');
  90    }
  91  
  92    function getTagDictionary()
  93    {
  94      return $this->getDictionary('tag');
  95    }
  96  
  97    function getPropertyDictionary()
  98    {
  99      return $this->getDictionary('property');
 100    }
 101  
 102    protected function _initializeDictionary($name, $dictionary_class, $type)
 103    {
 104      $dictionary = null;
 105      $cache_file = $this->config->getCacheDir() . "/{$dictionary_class}.cache";
 106  
 107      if(!$this->config->isForceScan() && file_exists($cache_file))
 108      {
 109        $dictionary = unserialize(file_get_contents($cache_file));
 110        $this->dictionaries[$name] = $dictionary;
 111      }
 112  
 113      if(!is_object($dictionary))
 114      {
 115        // For testing purposes

 116        if(isset($GLOBALS[$name.'_wact_dictionary']))
 117        {
 118          $dictionary = $GLOBALS[$name.'_wact_dictionary'];
 119          $dictionary->setConfig($this->config);
 120        }
 121        else
 122          $dictionary = new $dictionary_class($this->config);
 123  
 124        $this->dictionaries[$name] = $dictionary;
 125        $dictionary->buildDictionary('.' . $type . '.php');
 126  
 127        WactCompiler :: writeFile($cache_file, serialize($dictionary));
 128      }
 129  
 130      // For testing purposes

 131      $GLOBALS[$name.'_wact_dictionary'] = $dictionary;
 132  
 133      return $dictionary;
 134    }
 135  }
 136  ?>