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authordchill42 <dchill42@gmail.com>2012-07-23 16:53:47 +0200
committerdchill42 <dchill42@gmail.com>2012-07-23 16:53:47 +0200
commitc5079de78e5141330c07e990811ef15e998e95aa (patch)
tree0f39d8c4fc7614246fc185810bfeaa7fad88a33a /system/libraries/Cache/drivers/Cache_file.php
parent00fcb545109d4e61bc14e403ec828749c34a54b3 (diff)
parentede49ba66b127535f3430e20aac72ceed2c4611a (diff)
Merge branch develop of github.com:/EllisLab/CodeIgniter into session
Diffstat (limited to 'system/libraries/Cache/drivers/Cache_file.php')
-rw-r--r--system/libraries/Cache/drivers/Cache_file.php122
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 */ \ No newline at end of file