projects / weblabels.fsf.org.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f254ad8 AE |
1 | <?php\r |
| 2 | \r | |
| 3 | /**\r | |
| 4 | * Generic property list implementation\r | |
| 5 | */\r | |
| 6 | class HTMLPurifier_PropertyList\r | |
| 7 | {\r | |
| 8 | /**\r | |
| 9 | * Internal data-structure for properties\r | |
| 10 | */\r | |
| 11 | protected $data = array();\r | |
| 12 | \r | |
| 13 | /**\r | |
| 14 | * Parent plist\r | |
| 15 | */\r | |
| 16 | protected $parent;\r | |
| 17 | \r | |
| 18 | protected $cache;\r | |
| 19 | \r | |
| 20 | public function __construct($parent = null) {\r | |
| 21 | $this->parent = $parent;\r | |
| 22 | }\r | |
| 23 | \r | |
| 24 | /**\r | |
| 25 | * Recursively retrieves the value for a key\r | |
| 26 | */\r | |
| 27 | public function get($name) {\r | |
| 28 | if ($this->has($name)) return $this->data[$name];\r | |
| 29 | // possible performance bottleneck, convert to iterative if necessary\r | |
| 30 | if ($this->parent) return $this->parent->get($name);\r | |
| 31 | throw new HTMLPurifier_Exception("Key '$name' not found");\r | |
| 32 | }\r | |
| 33 | \r | |
| 34 | /**\r | |
| 35 | * Sets the value of a key, for this plist\r | |
| 36 | */\r | |
| 37 | public function set($name, $value) {\r | |
| 38 | $this->data[$name] = $value;\r | |
| 39 | }\r | |
| 40 | \r | |
| 41 | /**\r | |
| 42 | * Returns true if a given key exists\r | |
| 43 | */\r | |
| 44 | public function has($name) {\r | |
| 45 | return array_key_exists($name, $this->data);\r | |
| 46 | }\r | |
| 47 | \r | |
| 48 | /**\r | |
| 49 | * Resets a value to the value of it's parent, usually the default. If\r | |
| 50 | * no value is specified, the entire plist is reset.\r | |
| 51 | */\r | |
| 52 | public function reset($name = null) {\r | |
| 53 | if ($name == null) $this->data = array();\r | |
| 54 | else unset($this->data[$name]);\r | |
| 55 | }\r | |
| 56 | \r | |
| 57 | /**\r | |
| 58 | * Squashes this property list and all of its property lists into a single\r | |
| 59 | * array, and returns the array. This value is cached by default.\r | |
| 60 | * @param $force If true, ignores the cache and regenerates the array.\r | |
| 61 | */\r | |
| 62 | public function squash($force = false) {\r | |
| 63 | if ($this->cache !== null && !$force) return $this->cache;\r | |
| 64 | if ($this->parent) {\r | |
| 65 | return $this->cache = array_merge($this->parent->squash($force), $this->data);\r | |
| 66 | } else {\r | |
| 67 | return $this->cache = $this->data;\r | |
| 68 | }\r | |
| 69 | }\r | |
| 70 | \r | |
| 71 | /**\r | |
| 72 | * Returns the parent plist.\r | |
| 73 | */\r | |
| 74 | public function getParent() {\r | |
| 75 | return $this->parent;\r | |
| 76 | }\r | |
| 77 | \r | |
| 78 | /**\r | |
| 79 | * Sets the parent plist.\r | |
| 80 | */\r | |
| 81 | public function setParent($plist) {\r | |
| 82 | $this->parent = $plist;\r | |
| 83 | }\r | |
| 84 | }\r | |
| 85 | \r | |
| 86 | // vim: et sw=4 sts=4\r |