From 81f39c088e8aa2015f5450fb88e11c0b27b4c2e0 Mon Sep 17 00:00:00 2001
From: Klaus Leithoff <kl@stylite.de>
Date: Wed, 2 Nov 2011 14:59:35 +0000
Subject: [PATCH] fix typo

---
 phpgwapi/inc/class.egw_cache_files.inc.php | 148 +++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 phpgwapi/inc/class.egw_cache_files.inc.php

diff --git a/phpgwapi/inc/class.egw_cache_files.inc.php b/phpgwapi/inc/class.egw_cache_files.inc.php
new file mode 100644
index 0000000000..6625b0f6e8
--- /dev/null
+++ b/phpgwapi/inc/class.egw_cache_files.inc.php
@@ -0,0 +1,148 @@
+<?php
+/**
+ * eGroupWare API: Caching provider storing data to files
+ *
+ * @link http://www.egroupware.org
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package api
+ * @subpackage cache
+ * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @copyright (c) 2009 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @version $Id$
+ */
+
+/**
+ * Caching provider storing data in files
+ *
+ * The provider creates subdirs under a given path
+ * for each values in $key
+ */
+class egw_cache_files implements egw_cache_provider
+{
+	/**
+	 * Extension of file used to store expiration > 0
+	 */
+	const EXPIRATION_EXTENSION = '.expiration';
+
+	/**
+	 * Path of base-directory for the cache, set via parameter to the constructor or defaults to temp_dir
+	 *
+	 * @var string
+	 */
+	protected $base_path;
+
+	/**
+	 * Constructor, eg. opens the connection to the backend
+	 *
+	 * @throws Exception if connection to backend could not be established
+	 * @param array $params eg. array(host,port) or array(directory) depending on the provider
+	 */
+	function __construct(array $params)
+	{
+		if ($params)
+		{
+			$this->base_path = $params[0];
+		}
+		else
+		{
+			if(!isset($GLOBALS['egw_info']['server']['temp_dir']))
+			{
+				if (isset($GLOBALS['egw_setup']) && isset($GLOBALS['egw_setup']->db))
+				{
+					$GLOBALS['egw_info']['server']['temp_dir'] = $GLOBALS['egw_setup']->db->select(config::TABLE,'config_value',array(
+						'config_app'	=> 'phpgwapi',
+						'config_name'	=> 'temp_dir',
+					),__LINE__,__FILE__)->fetchColumn();
+				}
+				if (!$GLOBALS['egw_info']['server']['temp_dir'])
+				{
+					throw new Exception (__METHOD__."() server/temp_dir is NOT set!");
+				}
+			}
+			$this->base_path = $GLOBALS['egw_info']['server']['temp_dir'].'/egw_cache';
+		}
+		if (!isset($this->base_path) || !file_exists($this->base_path) && !mkdir($this->base_path,0700,true))
+		{
+			throw new Exception (__METHOD__."() can't create basepath $this->base_path!");
+		}
+	}
+
+	/**
+	 * Stores some data in the cache
+	 *
+	 * @param array $keys eg. array($level,$app,$location)
+	 * @param mixed $data
+	 * @param int $expiration=0
+	 * @return boolean true on success, false on error
+	 */
+	function set(array $keys,$data,$expiration=0)
+	{
+		if ($ret = @file_put_contents($fname=$this->filename($keys,true),serialize($data),LOCK_EX) > 0)
+		{
+			if ((int)$expiration > 0) file_put_contents($fname.self::EXPIRATION_EXTENSION,(string)$expiration);
+		}
+		return $ret;
+	}
+
+	/**
+	 * Get some data from the cache
+	 *
+	 * @param array $keys eg. array($level,$app,$location)
+	 * @return mixed data stored or NULL if not found in cache
+	 */
+	function get(array $keys)
+	{
+		if (!file_exists($fname = $this->filename($keys)))
+		{
+			return null;
+		}
+		if (file_exists($fname_expiration=$fname.self::EXPIRATION_EXTENSION) &&
+			($expiration = (int)file_get_contents($fname_expiration)) &&
+			filemtime($fname) < time()-$expiration)
+		{
+			unlink($fname);
+			unlink($fname_expiration);
+			return null;
+		}
+		return unserialize(file_get_contents($fname));
+	}
+
+	/**
+	 * Delete some data from the cache
+	 *
+	 * @param array $keys eg. array($level,$app,$location)
+	 * @return boolean true on success, false on error (eg. $key not set)
+	 */
+	function delete(array $keys)
+	{
+		if (!file_exists($fname = $this->filename($keys)))
+		{
+			//error_log(__METHOD__.'('.array2string($keys).") file_exists('$fname') == FALSE!");
+			return false;
+		}
+		if (file_exists($fname_expiration=$fname.self::EXPIRATION_EXTENSION))
+		{
+			unlink($fname_expiration);
+		}
+		//error_log(__METHOD__.'('.array2string($keys).") calling unlink('$fname')");
+		return unlink($fname);
+	}
+
+	/**
+	 * Create a path from $keys and $basepath
+	 *
+	 * @param array $keys
+	 * @param boolean $mkdir=false should we create the directory
+	 * @return string
+	 */
+	private function filename(array $keys,$mkdir=false)
+	{
+		$fname = $this->base_path.'/'.str_replace(array(':','*'),'-',implode('/',$keys));
+
+		if ($mkdir && !file_exists($dirname=dirname($fname)))
+		{
+			@mkdir($dirname,0700,true);
+		}
+		return $fname;
+	}
+}