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<?php |
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/** |
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* @package CleverStyle Framework |
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* @author Nazar Mokrynskyi <[email protected]> |
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* @copyright Copyright (c) 2011-2016, Nazar Mokrynskyi |
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* @license MIT License, see license.txt |
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*/ |
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namespace cs; |
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use |
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cs\Cache\Prefix; |
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/** |
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* @method static $this instance($check = false) |
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*/ |
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class Cache { |
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use Singleton; |
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/** |
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* Cache state |
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* |
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* @var bool |
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*/ |
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protected $state = true; |
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/** |
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* Initialization state |
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* @var bool |
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*/ |
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protected $init = false; |
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/** |
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* Name of cache engine |
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* @var string |
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*/ |
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protected $engine; |
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/** |
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* Instance of cache engine object |
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* |
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* @var Cache\_Abstract |
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*/ |
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protected $engine_instance; |
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/** |
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* Initialization, creating cache engine instance |
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*/ |
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protected function construct () { |
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if (!$this->init && $this->state) { |
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$this->engine = Core::instance()->cache_engine; |
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$engine_class = "cs\\Cache\\$this->engine"; |
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$this->engine_instance = new $engine_class(); |
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} |
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} |
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/** |
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* Returns instance for simplified work with cache, when using common prefix |
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* |
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* @param string $prefix |
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* |
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* @return Prefix |
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*/ |
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static function prefix ($prefix) { |
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return new Prefix($prefix); |
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} |
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/** |
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* Get item from cache |
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* |
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* If item not found and $callback parameter specified - closure must return value for item. This value will be set for current item, and returned. |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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* @param callable|null $callback |
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* |
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* @return false|mixed Returns item on success of <b>false</b> on failure |
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*/ |
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function get ($item, $callback = null) { |
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if (!$this->state) { |
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return is_callable($callback) ? $callback() : false; |
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} |
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$item = trim($item, '/'); |
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$data = $this->engine_instance->get($item); |
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if ($data === false && is_callable($callback)) { |
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$data = $callback(); |
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if ($data !== false) { |
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$this->set($item, $data); |
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} |
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} |
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return $data; |
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} |
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/** |
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* Put or change data of cache item |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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* @param mixed $data |
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* |
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* @return bool |
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*/ |
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function set ($item, $data) { |
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if (is_object($this->engine_instance)) { |
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$this->engine_instance->del($item); |
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} |
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if (!$this->state) { |
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return true; |
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} |
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$item = trim($item, '/'); |
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return $this->engine_instance->set($item, $data); |
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} |
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/** |
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* Delete item from cache |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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* |
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* @return bool |
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*/ |
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function del ($item) { |
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if (empty($item)) { |
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return false; |
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} |
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/** |
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* Cache cleaning instead of removing when root specified |
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*/ |
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if ($item == '/') { |
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return $this->clean(); |
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} |
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if (is_object($this->engine_instance)) { |
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$item = trim($item, '/'); |
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return $this->engine_instance->del($item); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* Clean cache by deleting all items |
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* |
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* @return bool |
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*/ |
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function clean () { |
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if (is_object($this->engine_instance)) { |
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return $this->engine_instance->clean(); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* Cache state enabled/disabled |
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* |
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* @return bool |
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*/ |
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function cache_state () { |
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return $this->state; |
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} |
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/** |
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* Disable cache |
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*/ |
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function disable () { |
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$this->state = false; |
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} |
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/** |
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* Get item from cache |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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* |
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* @return false|mixed Returns item on success of <b>false</b> on failure |
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*/ |
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function __get ($item) { |
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return $this->get($item); |
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} |
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/** |
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* Put or change data of cache item |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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* @param mixed $data |
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*/ |
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function __set ($item, $data) { |
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$this->set($item, $data); |
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} |
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/** |
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* Delete item from cache |
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* |
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* @param string $item May contain "/" symbols for cache structure, for example users/<i>user_id</i> |
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*/ |
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function __unset ($item) { |
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$this->del($item); |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
