<?php␊ |
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */␊ |
/*␊ |
# ***** BEGIN LICENSE BLOCK *****␊ |
# This file is part of Plume Framework, a simple PHP Application Framework.␊ |
# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.␊ |
#␊ |
# Plume Framework is free software; you can redistribute it and/or modify␊ |
# it under the terms of the GNU Lesser General Public License as published by␊ |
# the Free Software Foundation; either version 2.1 of the License, or␊ |
# (at your option) any later version.␊ |
#␊ |
# Plume Framework 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 Lesser General Public License for more details.␊ |
#␊ |
# You should have received a copy of the GNU Lesser General Public License␊ |
# along with this program; if not, write to the Free Software␊ |
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA␊ |
#␊ |
# ***** END LICENSE BLOCK ***** */␊ |
␊ |
/**␊ |
* File based cache.␊ |
*␊ |
* Info are stored in the 'cache_file_folder' folder. In the folder, 2␊ |
* subdirectories are created based on the md5 of the key.␊ |
*/␊ |
class Pluf_Cache_File extends Pluf_Cache␊ |
{␊ |
public function __constructor()␊ |
{␊ |
if (false == Pluf::f('cache_file_folder', false)) {␊ |
throw new Pluf_Exception_SettingError('"cache_file_folder" setting not defined.');␊ |
}␊ |
}␊ |
␊ |
/**␊ |
* Set a value in the cache.␊ |
*␊ |
* @param string Key to store the information␊ |
* @param mixed Value to store␊ |
* @param int Timeout in seconds (null)␊ |
* @return bool Success␊ |
*/␊ |
public function set($key, $value, $timeout=null)␊ |
{␊ |
$fname = $this->_keyToFile($key);␊ |
$dir = dirname($fname);␊ |
if ($timeout == null) $timeout = Pluf::f('cache_timeout', 300);␊ |
if (!file_exists($dir)) mkdir($dir, 0777, true);␊ |
$expire = time()+$timeout;␊ |
file_put_contents($fname, $expire."\n".serialize($value));␊ |
}␊ |
␊ |
/**␊ |
* Get value from the cache.␊ |
*␊ |
* @param string Key to get the information␊ |
* @param mixed Default value to return if cache miss (null)␊ |
* @param mixed Stored value or default␊ |
*/␊ |
public function get($key, $default=null)␊ |
{␊ |
$fname = $this->_keyToFile($key);␊ |
if (!file_exists($fname)) return $default;␊ |
list($timeout, $content) = explode("\n", file_get_contents($fname), 2);␊ |
if ($timeout < time()) {␊ |
unlink($fname);␊ |
return $default;␊ |
}␊ |
return unserialize($content);␊ |
}␊ |
␊ |
/**␊ |
* Convert a key into a path to a file.␊ |
*␊ |
* @param string Key␊ |
* @return string Path to file␊ |
*/␊ |
public function _keyToFile($key)␊ |
{␊ |
$md5 = md5($key);␊ |
return Pluf::f('cache_file_folder').'/'.substr($md5, 0, 2)␊ |
.'/'.substr($md5, 2, 2).'/'.substr($md5, 4);␊ |
}␊ |
}␊ |