XOOPS 2.5.6  Final
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DefinitionCacheFactory.php
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1 <?php
2 
7 {
8 
9  protected $caches = array('Serializer' => array());
10  protected $implementations = array();
11  protected $decorators = array();
12 
16  public function setup() {
17  $this->addDecorator('Cleanup');
18  }
19 
23  public static function instance($prototype = null) {
24  static $instance;
25  if ($prototype !== null) {
26  $instance = $prototype;
27  } elseif ($instance === null || $prototype === true) {
28  $instance = new HTMLPurifier_DefinitionCacheFactory();
29  $instance->setup();
30  }
31  return $instance;
32  }
33 
39  public function register($short, $long) {
40  $this->implementations[$short] = $long;
41  }
42 
48  public function create($type, $config) {
49  $method = $config->get('Cache.DefinitionImpl');
50  if ($method === null) {
52  }
53  if (!empty($this->caches[$method][$type])) {
54  return $this->caches[$method][$type];
55  }
56  if (
57  isset($this->implementations[$method]) &&
58  class_exists($class = $this->implementations[$method], false)
59  ) {
60  $cache = new $class($type);
61  } else {
62  if ($method != 'Serializer') {
63  trigger_error("Unrecognized DefinitionCache $method, using Serializer instead", E_USER_WARNING);
64  }
65  $cache = new HTMLPurifier_DefinitionCache_Serializer($type);
66  }
67  foreach ($this->decorators as $decorator) {
68  $new_cache = $decorator->decorate($cache);
69  // prevent infinite recursion in PHP 4
70  unset($cache);
71  $cache = $new_cache;
72  }
73  $this->caches[$method][$type] = $cache;
74  return $this->caches[$method][$type];
75  }
76 
81  public function addDecorator($decorator) {
82  if (is_string($decorator)) {
83  $class = "HTMLPurifier_DefinitionCache_Decorator_$decorator";
84  $decorator = new $class;
85  }
86  $this->decorators[$decorator->name] = $decorator;
87  }
88 
89 }
90 
91 // vim: et sw=4 sts=4