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96 lines
2.4 KiB
PHP
96 lines
2.4 KiB
PHP
<?php
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/*
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* This file is part of MailSo.
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*
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* (c) 2014 Usenko Timur
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace MailSo\Cache\Drivers;
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/**
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* @category MailSo
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* @package Cache
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* @subpackage Drivers
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*/
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class File implements \MailSo\Cache\DriverInterface
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{
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private string $sCacheFolder;
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private string $sKeyPrefix = '';
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function __construct(string $sCacheFolder, string $sKeyPrefix = '')
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{
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$this->sCacheFolder = \rtrim(\trim($sCacheFolder), '\\/').'/';
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// http://www.brynosaurus.com/cachedir/
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$tag = $this->sCacheFolder . 'CACHEDIR.TAG';
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\is_file($tag) || \file_put_contents($tag, 'Signature: 8a477f597d28d172789f06886806bc55');
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if (!empty($sKeyPrefix)) {
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$sKeyPrefix = \str_pad(\preg_replace('/[^a-zA-Z0-9_]/', '_',
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\rtrim(\trim($sKeyPrefix), '\\/')), 5, '_');
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$this->sKeyPrefix = '__/'.
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\substr($sKeyPrefix, 0, 2).'/'.\substr($sKeyPrefix, 2, 2).'/'.
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$sKeyPrefix.'/';
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}
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}
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public function Set(string $sKey, string $sValue) : bool
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{
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$sPath = $this->generateCachedFileName($sKey, true);
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return '' === $sPath ? false : false !== \file_put_contents($sPath, $sValue);
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}
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public function Exists(string $sKey) : bool
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{
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$sPath = $this->generateCachedFileName($sKey);
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return '' !== $sPath && \file_exists($sPath);
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}
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public function Get(string $sKey) : ?string
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{
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$sValue = null;
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$sPath = $this->generateCachedFileName($sKey);
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if ('' !== $sPath && \file_exists($sPath)) {
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$sValue = \file_get_contents($sPath);
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}
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return \is_string($sValue) ? $sValue : null;
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}
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public function Delete(string $sKey) : void
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{
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$sPath = $this->generateCachedFileName($sKey);
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if ('' !== $sPath && \file_exists($sPath)) {
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\unlink($sPath);
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}
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}
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public function GC(int $iTimeToClearInHours = 24) : bool
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{
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\MailSo\Base\Utils::RecTimeDirRemove($this->sCacheFolder, 3600 * $iTimeToClearInHours);
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return true;
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}
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private function generateCachedFileName(string $sKey, bool $bMkDir = false) : string
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{
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$sFilePath = '';
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if (3 < \strlen($sKey)) {
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$sKeyPath = \sha1($sKey);
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$sFilePath = $this->sCacheFolder . $this->sKeyPrefix
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. \substr($sKeyPath, 0, 2) . '/' . \substr($sKeyPath, 2, 2) . '/' . $sKeyPath;
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if ($bMkDir) {
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$dir = \dirname($sFilePath);
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if (!\is_dir($dir) && !\mkdir($dir, 0700, true)) {
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\error_log("mkdir({$dir}) failed");
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$sFilePath = '';
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}
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}
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}
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return $sFilePath;
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}
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}
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