1 <?php

     2 

     3 namespace Metadata\Cache;

     4 

     5 use Metadata\ClassMetadata;

     6 

     7 class FileCache implements CacheInterface

     8 {

     9     private $dir;

    10 

    11     public function __construct($dir)

    12     {

    13         if (!is_dir($dir)) {

    14             throw new \InvalidArgumentException(sprintf('The directory "%s" does not exist.', $dir));

    15         }

    16         if (!is_writable($dir)) {

    17             throw new \InvalidArgumentException(sprintf('The directory "%s" is not writable.', $dir));

    18         }

    19 

    20         $this->dir = rtrim($dir, '\\/');

    21     }

    22 

    23     public function loadClassMetadataFromCache(\ReflectionClass $class)

    24     {

    25         $path = $this->dir.'/'.strtr($class->getName(), '\\', '-').'.cache.php';

    26         if (!file_exists($path)) {

    27             return null;

    28         }

    29 

    30         return include $path;

    31     }

    32 

    33     public function putClassMetadataInCache(ClassMetadata $metadata)

    34     {

    35         $path = $this->dir.'/'.strtr($metadata->name, '\\', '-').'.cache.php';

    36         file_put_contents($path, '<?php return unserialize('.var_export(serialize($metadata), true).');');

    37     }

    38 

    39     public function evictClassMetadataFromCache(\ReflectionClass $class)

    40     {

    41         $path = $this->dir.'/'.strtr($class->getName(), '\\', '-').'.cache.php';

    42         if (file_exists($path)) {

    43             unlink($path);

    44         }

    45     }

    46 }