mcs/class/monodoc/Monodoc/cache.cs

   1 using System;
   2 using System.Linq;
   3 using System.IO;
   4 using System.Configuration;
   5 using System.Collections.Specialized;
   6 using Monodoc.Caches;
   7
   8 namespace Monodoc
   9 {
  10         public enum DocEntity
  11         {
  12                 Text,
  13                 Blob
  14         }
  15
  16         public interface IDocCache : IDisposable
  17         {
  18                 bool IsCached (string id);
  19                 bool CanCache (DocEntity entity);
  20
  21                 Stream GetCachedStream (string id);
  22                 string GetCachedString (string id);
  23
  24                 void CacheText (string id, string content);
  25                 void CacheText (string id, Stream stream);
  26
  27                 void CacheBlob (string id, byte[] data);
  28                 void CacheBlob (string id, Stream stream);
  29         }
  30
  31         public static class DocCacheHelper
  32         {
  33                 static string cacheBaseDirectory;
  34
  35                 static DocCacheHelper ()
  36                 {
  37                         try {
  38                                 var cacheConfig = Config.Get ("cache");
  39                                 if (cacheConfig == null) return;
  40                                 var cacheValues = cacheConfig.Split (',');
  41                                 if (cacheValues.Length == 2 && cacheValues[0].Equals ("file", StringComparison.Ordinal))
  42                                         cacheBaseDirectory = cacheValues[1].Replace ("~", Environment.GetFolderPath (Environment.SpecialFolder.Personal));
  43                         } catch {}
  44                 }
  45
  46                 // Use configuration option to query for cache directory, if it doesn't exist we instantiate a nullcache
  47                 public static IDocCache GetDefaultCache (string name)
  48                 {
  49                         if (cacheBaseDirectory == null)
  50                                 return new NullCache ();
  51
  52                         return new FileCache (Path.Combine (cacheBaseDirectory, name));
  53                 }
  54         }
  55 }