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<?php |
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/** |
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* Simple Machines Forum (SMF) |
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* |
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* @package SMF |
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* @author Simple Machines http://www.simplemachines.org |
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* @copyright 2019 Simple Machines and individual contributors |
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* @license http://www.simplemachines.org/about/smf/license.php BSD |
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* |
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* @version 2.1 RC2 |
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*/ |
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if (!defined('SMF')) |
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die('Hacking attempt...'); |
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/** |
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* SQLite Cache API class |
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* |
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* @package cacheAPI |
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*/ |
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class sqlite_cache extends cache_api |
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{ |
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/** |
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* @var string The path to the current $cachedir directory. |
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*/ |
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private $cachedir = null; |
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/** |
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* @var SQLite3 |
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*/ |
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private $cacheDB = null; |
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/** |
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* @var int |
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*/ |
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private $cacheTime = 0; |
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public function __construct() |
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{ |
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parent::__construct(); |
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// Set our default cachedir. |
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$this->setCachedir(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function connect() |
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{ |
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$database = $this->cachedir . '/' . 'SQLite3Cache.db3'; |
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$this->cacheDB = new SQLite3($database); |
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$this->cacheDB->busyTimeout(1000); |
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if (filesize($database) == 0) |
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{ |
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$this->cacheDB->exec('CREATE TABLE cache (key text unique, value blob, ttl int);'); |
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$this->cacheDB->exec('CREATE INDEX ttls ON cache(ttl);'); |
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} |
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$this->cacheTime = time(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isSupported($test = false) |
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{ |
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$supported = class_exists("SQLite3") && is_writable($this->cachedir); |
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if ($test) |
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return $supported; |
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return parent::isSupported() && $supported; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getData($key, $ttl = null) |
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{ |
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$ttl = time() - $ttl; |
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$query = 'SELECT value FROM cache WHERE key = \'' . $this->cacheDB->escapeString($key) . '\' AND ttl >= ' . $ttl . ' LIMIT 1'; |
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$result = $this->cacheDB->query($query); |
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$value = null; |
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while ($res = $result->fetchArray(SQLITE3_ASSOC)) |
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$value = $res['value']; |
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return !empty($value) ? $value : null; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function putData($key, $value, $ttl = null) |
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{ |
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$ttl = $this->cacheTime + $ttl; |
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$query = 'REPLACE INTO cache VALUES (\'' . $this->cacheDB->escapeString($key) . '\', \'' . $this->cacheDB->escapeString($value) . '\', ' . $this->cacheDB->escapeString($ttl) . ');'; |
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$result = $this->cacheDB->exec($query); |
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return $result; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cleanCache($type = '') |
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{ |
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if ($type == 'expired') |
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$query = 'DELETE FROM cache WHERE ttl >= ' . time() . ';'; |
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else |
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$query = 'DELETE FROM cache;'; |
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$result = $this->cacheDB->exec($query); |
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$query = 'VACUUM;'; |
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$this->cacheDB->exec($query); |
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return $result; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cacheSettings(array &$config_vars) |
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{ |
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global $context, $txt; |
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$config_vars[] = $txt['cache_sqlite_settings']; |
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$config_vars[] = array('cachedir_sqlite', $txt['cachedir_sqlite'], 'file', 'text', 36, 'cache_sqlite_cachedir'); |
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if (!isset($context['settings_post_javascript'])) |
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$context['settings_post_javascript'] = ''; |
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$context['settings_post_javascript'] .= ' |
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$("#cache_accelerator").change(function (e) { |
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var cache_type = e.currentTarget.value; |
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$("#cachedir_sqlite").prop("disabled", cache_type != "sqlite"); |
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});'; |
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} |
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/** |
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* Sets the $cachedir or uses the SMF default $cachedir.. |
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* |
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* @access public |
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* |
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* @param string $dir A valid path |
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* |
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* @return boolean If this was successful or not. |
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*/ |
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public function setCachedir($dir = null) |
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{ |
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global $cachedir, $cachedir_sqlite; |
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// If its invalid, use SMF's. |
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if (is_null($dir) || !is_writable($dir)) |
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if (is_null($cachedir_sqlite) || !is_writable($cachedir_sqlite)) |
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$this->cachedir = $cachedir; |
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else |
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$this->cachedir = $cachedir_sqlite; |
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else |
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$this->cachedir = $dir; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getVersion() |
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{ |
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$temp = $this->cacheDB->version(); |
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return $temp['versionString']; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function housekeeping() |
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{ |
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$this->cleanCache('expired'); |
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} |
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} |
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183
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?> |
Antes /
kittenground
