includes/cache/ObjectFileCache.php

   1 <?php
   2 /**
   3  * Contain the ObjectFileCache class
   4  * @file
   5  * @ingroup Cache
   6  */
   7 class ObjectFileCache extends FileCacheBase {
   8         /**
   9          * Construct an ObjectFileCache from a key and a type
  10          * @param $key string
  11          * @param $type string
  12          * @return ObjectFileCache
  13          */
  14         public static function newFromKey( $key, $type ) {
  15                 $cache = new self();
  16
  17                 $allowedTypes = self::cacheableTypes();
  18                 if ( !isset( $allowedTypes[$type] ) ) {
  19                         throw new MWException( "Invalid filecache type given." );
  20                 }
  21                 $cache->mKey = (string)$key;
  22                 $cache->mType = (string)$type;
  23                 $cache->mExt = $allowedTypes[$cache->mType];
  24
  25                 return $cache;
  26         }
  27
  28         /**
  29          * Get the type => extension mapping
  30          * @return array
  31          */
  32         protected static function cacheableTypes() {
  33                 return array( 'resources-js' => 'js', 'resources-css' => 'css' );
  34         }
  35
  36         /**
  37          * Get the base file cache directory
  38          * @return string
  39          */
  40         protected function cacheDirectory() {
  41                 global $wgCacheDirectory, $wgFileCacheDirectory, $wgFileCacheDepth;
  42                 if ( $wgFileCacheDirectory ) {
  43                         $dir = $wgFileCacheDirectory;
  44                 } elseif ( $wgCacheDirectory ) {
  45                         $dir = "$wgCacheDirectory/object";
  46                 } else {
  47                         throw new MWException( 'Please set $wgCacheDirectory in LocalSettings.php if you wish to use the HTML file cache' );
  48                 }
  49                 return $dir;
  50         }
  51 }