forked from blallo/rss-bridge
d941fa41f6
There is no need to check the absense of the parameters in all functions. Instead 'getCacheName' is the only function actually using the parameters and thus should check the availability.
97 lines
2.1 KiB
PHP
97 lines
2.1 KiB
PHP
<?php
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/**
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* Cache with file system
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*/
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class FileCache implements CacheInterface {
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protected $param;
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public function loadData(){
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$datas = unserialize(file_get_contents($this->getCacheFile()));
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return $datas;
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}
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public function saveData($datas){
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$writeStream = file_put_contents($this->getCacheFile(), serialize($datas));
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if(!$writeStream) {
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throw new \Exception("Cannot write the cache... Do you have the right permissions ?");
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}
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return $this;
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}
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public function getTime(){
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$cacheFile = $this->getCacheFile();
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if(file_exists($cacheFile)){
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return filemtime($cacheFile);
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}
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return false;
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}
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public function purgeCache(){
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$cacheTimeLimit = time() - 86400; // 86400 -> 24h
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$cachePath = $this->getCachePath();
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if(file_exists($cachePath)){
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$cacheIterator = new RecursiveIteratorIterator(
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new RecursiveDirectoryIterator($cachePath),
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RecursiveIteratorIterator::CHILD_FIRST
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);
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foreach($cacheIterator as $cacheFile){
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if(in_array($cacheFile->getBasename(), array('.', '..')))
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continue;
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elseif($cacheFile->isFile()){
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if(filemtime($cacheFile->getPathname()) < $cacheTimeLimit)
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unlink($cacheFile->getPathname());
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}
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}
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}
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}
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/**
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* Set HTTP GET parameters
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* @return self
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*/
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public function setParameters(array $param){
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$this->param = $param;
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return $this;
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}
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/**
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* Return cache path (and create if not exist)
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* @return string Cache path
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*/
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protected function getCachePath(){
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$cacheDir = __DIR__ . '/../cache/'; // FIXME : configuration ?
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if(!is_dir($cacheDir)){
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mkdir($cacheDir, 0755, true);
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chmod($cacheDir, 0755);
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}
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return $cacheDir;
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}
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/**
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* Get the file name use for cache store
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* @return string Path to the file cache
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*/
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protected function getCacheFile(){
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return $this->getCachePath() . $this->getCacheName();
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}
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/**
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* Determines file name for store the cache
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* return string
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*/
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protected function getCacheName(){
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if(is_null($this->param)){
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throw new \Exception('Call "setParameters" first!');
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}
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return hash('sha1', http_build_query($this->param)) . '.cache';
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}
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}
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