First commit

sites/all/modules/civicrm/CRM/Utils/Cache/SerializeCache.php

@@ -0,0 +1,125 @@
+<?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();
+  }
+
+}