108 lines
2.7 KiB
PHP
108 lines
2.7 KiB
PHP
<?php
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/**
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* @author Arthur Schiwon <blizzz@owncloud.com>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Thomas Tanghus <thomas@tanghus.net>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Cache;
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class FileGlobal {
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static protected function getCacheDir() {
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$cache_dir = get_temp_dir().'/owncloud-' . \OC_Util::getInstanceId().'/';
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if (!is_dir($cache_dir)) {
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mkdir($cache_dir);
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}
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return $cache_dir;
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}
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protected function fixKey($key) {
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return str_replace('/', '_', $key);
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}
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/**
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* @param string $key
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*/
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public function get($key) {
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$key = $this->fixKey($key);
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if ($this->hasKey($key)) {
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$cache_dir = self::getCacheDir();
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return file_get_contents($cache_dir.$key);
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}
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return null;
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}
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/**
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* @param string $key
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* @param string $value
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*/
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public function set($key, $value, $ttl=0) {
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$key = $this->fixKey($key);
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$cache_dir = self::getCacheDir();
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if ($cache_dir and file_put_contents($cache_dir.$key, $value)) {
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if ($ttl === 0) {
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$ttl = 86400; // 60*60*24
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}
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return touch($cache_dir.$key, time() + $ttl);
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}
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return false;
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}
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public function hasKey($key) {
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$key = $this->fixKey($key);
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$cache_dir = self::getCacheDir();
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if ($cache_dir && is_file($cache_dir.$key) && is_readable($cache_dir.$key)) {
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$mtime = filemtime($cache_dir.$key);
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if ($mtime < time()) {
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unlink($cache_dir.$key);
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return false;
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}
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return true;
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}
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return false;
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}
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public function remove($key) {
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$cache_dir = self::getCacheDir();
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if(!$cache_dir) {
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return false;
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}
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$key = $this->fixKey($key);
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return unlink($cache_dir.$key);
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}
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public function clear($prefix='') {
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$cache_dir = self::getCacheDir();
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$prefix = $this->fixKey($prefix);
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if($cache_dir and is_dir($cache_dir)) {
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$dh=opendir($cache_dir);
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if(is_resource($dh)) {
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while (($file = readdir($dh)) !== false) {
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if($file!='.' and $file!='..' and ($prefix==='' || strpos($file, $prefix) === 0)) {
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unlink($cache_dir.$file);
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}
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}
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}
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}
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}
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}
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