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<?php |
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/* |
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* This file is part of the php-phantomjs. |
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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 JonnyW\PhantomJs\Cache; |
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use JonnyW\PhantomJs\StringUtils; |
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use JonnyW\PhantomJs\Exception\NotWritableException; |
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use JonnyW\PhantomJs\Exception\NotExistsException; |
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/** |
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* PHP PhantomJs |
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* |
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* @author Jon Wenmoth <[email protected]> |
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*/ |
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class FileCache implements CacheInterface |
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{ |
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/** |
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* Default write directory |
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* |
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* @var string |
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* @access protected |
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*/ |
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protected $directory; |
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/** |
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* Default write extension |
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* |
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* @var string |
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* @access protected |
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*/ |
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protected $extension; |
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/** |
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* Internal constructor. |
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* |
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* @access public |
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* @param string $directory |
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* @param string $extension |
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*/ |
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public function __construct($directory, $extension) |
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{ |
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$this->directory = rtrim($directory, DIRECTORY_SEPARATOR); |
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$this->extension = $extension; |
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} |
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/** |
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* Write data to storage. |
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* |
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* @access public |
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* @param string $id |
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* @param string $data |
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* @return string |
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* @throws \JonnyW\PhantomJs\Exception\NotWritableException |
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*/ |
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public function save($id, $data) |
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{ |
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$file = $this->getFilename($id); |
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if (!$this->isWritable($file)) { |
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throw new NotWritableException(sprintf('File could not be written to system as target is not writable: %s', $file)); |
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} |
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if ($this->writeData($file, $data) === false) { |
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$this->delete($file); |
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throw new NotWritableException(sprintf('Data could not be written to file on system. Please make sure that file is writeable: %s', $file)); |
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} |
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return $file; |
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} |
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/** |
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* Fetch data from file. |
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* |
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* @access public |
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* @param string $id |
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* @return mixed|void |
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* @throws \JonnyW\PhantomJs\Exception\NotExistsException |
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*/ |
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public function fetch($id) |
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{ |
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$file = $this->getFilename($id); |
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if (!$this->exists($id)) { |
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throw new NotExistsException(sprintf('Could not fetch data from file as file does not exist: %s', $file)); |
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} |
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return $this->readData($file); |
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} |
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/** |
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* Delete data from storage. |
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* |
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* @access public |
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* @param string $id |
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* @return void |
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*/ |
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public function delete($id) |
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{ |
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$files = glob($this->getFilename($id)); |
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if (count($files)) { |
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array_map('unlink', $files); |
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} |
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} |
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/** |
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* Data exists in storage. |
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* |
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* @access public |
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* @param string $id |
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* @return boolean |
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*/ |
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public function exists($id) |
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{ |
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return (bool) (file_exists($this->getFilename($id))); |
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} |
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/** |
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* Is data writeable. |
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* |
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* @access protected |
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* @param $file |
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* @return boolean |
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*/ |
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protected function isWritable($file) |
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{ |
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return (bool) ((file_exists($file) && is_writable($file)) || (!file_exists($file) && is_writable(dirname($file)))); |
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} |
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/** |
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* Write data to file. |
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* |
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* @access protected |
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* @param string $file |
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* @param string $data |
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* @return boolean |
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*/ |
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protected function writeData($file, $data) |
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{ |
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return file_put_contents($file, $data); |
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} |
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/** |
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* Read data from file. |
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* |
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* @access protected |
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* @param string $file |
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* @return mixed |
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*/ |
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protected function readData($file) |
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{ |
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return file_get_contents($file); |
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} |
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/** |
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* Get filename |
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* |
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* @access protected |
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* @param string $id |
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* @return string |
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* @throws \JonnyW\PhantomJs\Exception\NotWritableException |
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*/ |
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protected function getFileName($id) |
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{ |
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if (is_dir($id)) { |
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return sprintf('%1$s/%2$s.%3$s', rtrim($id, DIRECTORY_SEPARATOR), StringUtils::random(20), $this->extension); |
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} |
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$dirName = dirname($id); |
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if (!file_exists($id) && $dirName === '.') { |
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return sprintf('%1$s/%2$s', $this->directory, $id); |
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} |
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if (!file_exists($id) && !is_writable($dirName)) { |
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throw new NotWritableException(sprintf('File could not be written to system as target is not writable: %s', $id)); |
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} |
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return $id; |
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} |
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} |
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jonnnnyw /
php-phantomjs
