diff options
Diffstat (limited to 'system/libraries/Cache/drivers/Cache_file.php')
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_file.php | 122 |
1 files changed, 66 insertions, 56 deletions
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php index 6c37e7005..37d77c268 100644 --- a/system/libraries/Cache/drivers/Cache_file.php +++ b/system/libraries/Cache/drivers/Cache_file.php @@ -2,44 +2,58 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @author EllisLab Dev Team + * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 - * @filesource + * @filesource */ -// ------------------------------------------------------------------------ - /** - * CodeIgniter Memcached Caching Class + * CodeIgniter File Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team - * @link + * @author EllisLab Dev Team + * @link */ - class CI_Cache_file extends CI_Driver { + /** + * Directory in which to save cache files + * + * @var string + */ protected $_cache_path; /** - * Constructor + * Initialize file-based cache + * + * @return void */ public function __construct() { $CI =& get_instance(); $CI->load->helper('file'); - $path = $CI->config->item('cache_path'); - - $this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path; + $this->_cache_path = ($path === '') ? APPPATH.'cache/' : $path; } // ------------------------------------------------------------------------ @@ -47,8 +61,8 @@ class CI_Cache_file extends CI_Driver { /** * Fetch from cache * - * @param mixed unique key id - * @return mixed data on success/false on failure + * @param mixed unique key id + * @return mixed data on success/false on failure */ public function get($id) { @@ -56,16 +70,15 @@ class CI_Cache_file extends CI_Driver { { return FALSE; } - - $data = read_file($this->_cache_path.$id); - $data = unserialize($data); - - if (time() > $data['time'] + $data['ttl']) + + $data = unserialize(file_get_contents($this->_cache_path.$id)); + + if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl']) { unlink($this->_cache_path.$id); return FALSE; } - + return $data['data']; } @@ -74,24 +87,24 @@ class CI_Cache_file extends CI_Driver { /** * Save into cache * - * @param string unique key - * @param mixed data to store - * @param int length of time (in seconds) the cache is valid - * - Default is 60 seconds - * @return boolean true on success/false on failure + * @param string unique key + * @param mixed data to store + * @param int length of time (in seconds) the cache is valid + * - Default is 60 seconds + * @return bool true on success/false on failure */ public function save($id, $data, $ttl = 60) - { + { $contents = array( - 'time' => time(), - 'ttl' => $ttl, - 'data' => $data - ); - + 'time' => time(), + 'ttl' => $ttl, + 'data' => $data + ); + if (write_file($this->_cache_path.$id, serialize($contents))) { - @chmod($this->_cache_path.$id, 0777); - return TRUE; + @chmod($this->_cache_path.$id, 0660); + return TRUE; } return FALSE; @@ -102,12 +115,12 @@ class CI_Cache_file extends CI_Driver { /** * Delete from Cache * - * @param mixed unique identifier of item in cache - * @return boolean true on success/false on failure + * @param mixed unique identifier of item in cache + * @return bool true on success/false on failure */ public function delete($id) { - return unlink($this->_cache_path.$id); + return file_exists($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE; } // ------------------------------------------------------------------------ @@ -115,8 +128,8 @@ class CI_Cache_file extends CI_Driver { /** * Clean the Cache * - * @return boolean false on failure/true on success - */ + * @return bool false on failure/true on success + */ public function clean() { return delete_files($this->_cache_path); @@ -129,8 +142,8 @@ class CI_Cache_file extends CI_Driver { * * Not supported by file-based caching * - * @param string user/filehits - * @return mixed FALSE + * @param string user/filehits + * @return mixed FALSE */ public function cache_info($type = NULL) { @@ -142,8 +155,8 @@ class CI_Cache_file extends CI_Driver { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed FALSE on failure, array on success. + * @param mixed key to get cache metadata on + * @return mixed FALSE on failure, array on success. */ public function get_metadata($id) { @@ -151,25 +164,24 @@ class CI_Cache_file extends CI_Driver { { return FALSE; } - - $data = read_file($this->_cache_path.$id); - $data = unserialize($data); - + + $data = unserialize(file_get_contents($this->_cache_path.$id)); + if (is_array($data)) { $mtime = filemtime($this->_cache_path.$id); - if ( ! isset($data['data']['ttl'])) + if ( ! isset($data['ttl'])) { return FALSE; } return array( - 'expire' => $mtime + $data['data']['ttl'], + 'expire' => $mtime + $data['ttl'], 'mtime' => $mtime ); } - + return FALSE; } @@ -179,17 +191,15 @@ class CI_Cache_file extends CI_Driver { * Is supported * * In the file driver, check to see that the cache directory is indeed writable - * - * @return boolean + * + * @return bool */ public function is_supported() { return is_really_writable($this->_cache_path); } - // ------------------------------------------------------------------------ } -// End Class /* End of file Cache_file.php */ /* Location: ./system/libraries/Cache/drivers/Cache_file.php */
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