76 lines
1.9 KiB
PHP
76 lines
1.9 KiB
PHP
<?php
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/**
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* This file is part of the Jig package.
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*
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* Copyright (c) 03-Mar-2013 Dieter Raber <me@dieterraber.net>
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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 Jig\Cache\Adapters;
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use Jig\Cache\Adapters\FileCacheAbstract;
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use Jig\Cache\Interfaces\CacheInterface;
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/**
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* FileCacheNativeFormatAbstract. Uses native files as storage
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*/
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abstract class FileCacheNativeFormatAbstract extends FileCacheAbstract implements CacheInterface {
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/**
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* The format expected for a comment
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*
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* @var string
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*/
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protected static $commentFormat = '// %s';
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/**
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* Reads a resource from the cache
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*
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* @param string $cacheFilePath
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* @return string|false false if not readable
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*/
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public static function read($cacheFilePath) {
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if (!is_readable($cacheFilePath)) {
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return false;
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}
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$content = file_get_contents($cacheFilePath);
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$matches = [];
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$commentedTimestamp = strtok($content, "\n");
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preg_match('~([\d]+)~', $commentedTimestamp, $matches);
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$dataArray = [
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'expires' => !empty($matches[1]) ? $matches[1] : 1,
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'content' => substr($content, strlen($commentedTimestamp . "\n"))
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];
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$expirationCallback = function() use ($cacheFilePath) {
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self::delete($cacheFilePath);
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};
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return self::getContent($dataArray, $expirationCallback);
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}
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/**
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* Writes a resource to the cache, paths will be created if applicable
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*
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* @param type $cacheFilePath
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* @param mixed $data
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* @param mixed $duration can be a number of seconds or any argument accepted by strtotime()
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* @return int
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*/
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public static function write($cacheFilePath, $data, $duration = 0) {
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$dataArray = self::getDataArray($data, $duration);
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return self::save(
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$cacheFilePath,
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sprintf(
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static::$commentFormat . "\n",
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$dataArray['expires']
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) . $dataArray['content']
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);
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}
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}
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