| <?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);␊ |
| }␊ |
| }␊ |
