drupal-civicrm/sites/all/modules/civicrm/CRM/Utils/Cache/SerializeCache.php
2018-01-14 13:10:16 +00:00

126 lines
3.7 KiB
PHP

<?php
/*
+--------------------------------------------------------------------+
| CiviCRM version 4.7 |
+--------------------------------------------------------------------+
| Copyright CiviCRM LLC (c) 2004-2017 |
+--------------------------------------------------------------------+
| This file is a part of CiviCRM. |
| |
| CiviCRM is free software; you can copy, modify, and distribute it |
| under the terms of the GNU Affero General Public License |
| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
| |
| CiviCRM is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public |
| License and the CiviCRM Licensing Exception along |
| with this program; if not, contact CiviCRM LLC |
| at info[AT]civicrm[DOT]org. If you have questions about the |
| GNU Affero General Public License or the licensing of CiviCRM, |
| see the CiviCRM license FAQ at http://civicrm.org/licensing |
+--------------------------------------------------------------------+
*/
/**
*
* @package CRM
* @copyright CiviCRM LLC (c) 2004-2017
*/
/**
* Class CRM_Utils_Cache_SerializeCache
*/
class CRM_Utils_Cache_SerializeCache implements CRM_Utils_Cache_Interface {
/**
* The cache storage container, an array by default, stored in a file under templates
*/
private $_cache;
/**
* Constructor.
*
* @param array $config
* An array of configuration params.
*
* @return \CRM_Utils_Cache_SerializeCache
*/
public function __construct($config) {
$this->_cache = array();
}
/**
* @param $key
*
* @return string
*/
public function fileName($key) {
if (strlen($key) > 50) {
return CIVICRM_TEMPLATE_COMPILEDIR . "CRM_" . md5($key) . ".php";
}
return CIVICRM_TEMPLATE_COMPILEDIR . $key . ".php";
}
/**
* @param string $key
*
* @return mixed
*/
public function get($key) {
if (array_key_exists($key, $this->_cache)) {
return $this->_cache[$key];
}
if (!file_exists($this->fileName($key))) {
return;
}
$this->_cache[$key] = unserialize(substr(file_get_contents($this->fileName($key)), 8));
return $this->_cache[$key];
}
/**
* @param string $key
* @param mixed $value
*/
public function set($key, &$value) {
if (file_exists($this->fileName($key))) {
return;
}
$this->_cache[$key] = $value;
file_put_contents($this->fileName($key), "<?php //" . serialize($value));
}
/**
* @param string $key
*/
public function delete($key) {
if (file_exists($this->fileName($key))) {
unlink($this->fileName($key));
}
unset($this->_cache[$key]);
}
/**
* @param null $key
*/
public function flush($key = NULL) {
$prefix = "CRM_";
if (!$handle = opendir(CIVICRM_TEMPLATE_COMPILEDIR)) {
return; // die? Error?
}
while (FALSE !== ($entry = readdir($handle))) {
if (substr($entry, 0, 4) == $prefix) {
unlink(CIVICRM_TEMPLATE_COMPILEDIR . $entry);
}
}
closedir($handle);
unset($this->_cache);
$this->_cache = array();
}
}