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- <?php
- /**
- * Cache with file system
- */
- class FileCache extends CacheAbstract {
- protected $cacheDirCreated; // boolean to avoid always chck dir cache existance
- public function loadData(){
- $this->isPrepareCache();
- $datas = unserialize(file_get_contents($this->getCacheFile()));
- return $datas;
- }
- public function saveData($datas){
- $this->isPrepareCache();
- //Re-encode datas to UTF-8
- //$datas = Cache::utf8_encode_deep($datas);
- $writeStream = file_put_contents($this->getCacheFile(), serialize($datas));
- if(!$writeStream) {
- throw new \Exception("Cannot write the cache... Do you have the right permissions ?");
- }
- return $this;
- }
- public function getTime(){
- $this->isPrepareCache();
- $cacheFile = $this->getCacheFile();
- if(file_exists($cacheFile)){
- return filemtime($cacheFile);
- }
- return false;
- }
- /**
- * Cache is prepared ?
- * Note : Cache name is based on request information, then cache must be prepare before use
- * @return \Exception|true
- */
- protected function isPrepareCache(){
- if(is_null($this->param)){
- throw new \Exception('Please feed "prepare" method before try to load');
- }
- return true;
- }
- /**
- * Return cache path (and create if not exist)
- * @return string Cache path
- */
- protected function getCachePath(){
- $cacheDir = __DIR__ . '/../cache/'; // FIXME : configuration ?
- // FIXME : implement recursive dir creation
- if(is_null($this->cacheDirCreated) && !is_dir($cacheDir)){
- $this->cacheDirCreated = true;
- mkdir($cacheDir,0705);
- chmod($cacheDir,0705);
- }
- return $cacheDir;
- }
- /**
- * Get the file name use for cache store
- * @return string Path to the file cache
- */
- protected function getCacheFile(){
- return $this->getCachePath() . $this->getCacheName();
- }
- /**
- * Determines file name for store the cache
- * return string
- */
- protected function getCacheName(){
- $this->isPrepareCache();
- $stringToEncode = $_SERVER['REQUEST_URI'] . http_build_query($this->param);
- $stringToEncode = preg_replace('/(\?|&)format=[^&]*/i', '$1', $stringToEncode);
- return hash('sha1', $stringToEncode) . '.cache';
- }
- }
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