1 <?php

     2 

     3 /*

     4  * This file is part of the Assetic package, an OpenSky project.

     5  *

     6  * (c) 2010-2011 OpenSky Project Inc

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Assetic\Cache;

    13 

    14 /**

    15  * A simple filesystem cache.

    16  *

    17  * @author Kris Wallsmith <kris.wallsmith@gmail.com>

    18  */

    19 class FilesystemCache implements CacheInterface

    20 {

    21     private $dir;

    22 

    23     public function __construct($dir)

    24     {

    25         $this->dir = $dir;

    26     }

    27 

    28     public function has($key)

    29     {

    30         return file_exists($this->dir.'/'.$key);

    31     }

    32 

    33     public function get($key)

    34     {

    35         $path = $this->dir.'/'.$key;

    36 

    37         if (!file_exists($path)) {

    38             throw new \RuntimeException('There is no cached value for '.$key);

    39         }

    40 

    41         return file_get_contents($path);

    42     }

    43 

    44     public function set($key, $value)

    45     {

    46         if (!is_dir($this->dir) && false === @mkdir($this->dir, 0777, true)) {

    47             throw new \RuntimeException('Unable to create directory '.$this->dir);

    48         }

    49 

    50         $path = $this->dir.'/'.$key;

    51 

    52         if (false === @file_put_contents($path, $value)) {

    53             throw new \RuntimeException('Unable to write file '.$path);

    54         }

    55     }

    56 

    57     public function remove($key)

    58     {

    59         $path = $this->dir.'/'.$key;

    60 

    61         if (file_exists($path) && false === @unlink($path)) {

    62             throw new \RuntimeException('Unable to remove file '.$path);

    63         }

    64     }

    65 }