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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | <?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{ /** * Is debug mode? * * @var boolean */ private $_debug; /** * Mapping key => md5. * * @var array */ private $_keymap = array(); public function __construct() { if (!Pluf::f('cache_file_folder', false)) { throw new Pluf_Exception_SettingError('"cache_file_folder" setting not defined.'); } $this->_debug = Pluf::f('debug', false); } /** * Set a value in the cache. * * @param string Key to store the information * @param mixed Value to store * @param int Timeout in seconds (null) * @return bool Success */ public function set($key, $value, $timeout=null) { $fname = $this->_keyToFile($key); $dir = dirname($fname); if (null === $timeout) { $timeout = Pluf::f('cache_timeout', 300); } if (!file_exists($dir)) { mkdir($dir, 0777, true); } $expire = $_SERVER['REQUEST_TIME'] + $timeout; $success = file_put_contents($fname, $expire."\n".serialize($value), LOCK_EX); chmod($fname, 0777); return (false === $success) ? false : true; } /** * Get value from the cache. * * @param string Key to get the information * @param mixed Default value to return if cache miss (null) * @param mixed Stored value or default */ public function get($key, $default=null) { $fname = $this->_keyToFile($key); if (!file_exists($fname)) { return $default; } if ($this->_debug) { ob_start(); include $fname; $data = ob_get_contents(); ob_end_clean(); } else { $data = file_get_contents($fname); } list($timeout, $content) = explode("\n", $data, 2); if ($timeout < $_SERVER['REQUEST_TIME']) { @unlink($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($key) { if (isset($this->_keymap[$key])) { $md5 = $this->_keymap[$key]; } else { $md5 = md5($key); $this->_keymap[$key] = $md5; } return Pluf::f('cache_file_folder') . '/' . substr($md5, 0, 2) . '/' . substr($md5, 2, 2) . '/' . substr($md5, 4); }} |
