beagled/FileSystemQueryable/DirectoryIndexableGenerator.cs

   1 //
   2 // DirectoryIndexableGenerator.cs
   3 //
   4 // Copyright (C) 2004 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a
   9 // copy of this software and associated documentation files (the "Software"),
  10 // to deal in the Software without restriction, including without limitation
  11 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12 // and/or sell copies of the Software, and to permit persons to whom the
  13 // Software is furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in
  16 // all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24 // DEALINGS IN THE SOFTWARE.
  25 //
  26
  27 using System;
  28 using System.Collections;
  29 using System.IO;
  30
  31 using Beagle.Util;
  32 using Beagle.Daemon;
  33
  34 namespace Beagle.Daemon.FileSystemQueryable {
  35
  36         public class DirectoryIndexableGenerator : IIndexableGenerator {
  37
  38                 FileSystemQueryable queryable;
  39                 DirectoryModel directory;
  40                 IEnumerator files;
  41                 bool done = false;
  42
  43                 public DirectoryIndexableGenerator (FileSystemQueryable queryable,
  44                                                     DirectoryModel      directory)
  45                 {
  46                         this.queryable = queryable;
  47                         this.directory = directory;
  48
  49                         if (this.directory == null)
  50                                 done = true;
  51                         else
  52                                 files = DirectoryWalker.GetFileInfos (this.directory.FullName).GetEnumerator ();
  53                 }
  54
  55                 public Indexable GetNextIndexable ()
  56                 {
  57                         if (done)
  58                                 return null;
  59
  60                         while (files.MoveNext ()) {
  61                                 FileInfo f = files.Current as FileInfo;
  62                                 Indexable indexable = null;
  63                                 try {
  64                                         if (f.Exists
  65                                             && ! FileSystem.IsSpecialFile (f.FullName)
  66                                             && this.directory.IsAttached)
  67                                                 indexable = queryable.GetCrawlingFileIndexable (directory, f.Name);
  68                                 } catch (Exception ex) {
  69                                         Logger.Log.Debug (ex, "Caught exception calling GetCrawlingFileIndexable on '{0}'", f.FullName);
  70                                 }
  71                                 if (indexable != null)
  72                                         return indexable;
  73                         }
  74
  75                         done = true;
  76                         return null;
  77                 }
  78
  79                 public bool HasNextIndexable ()
  80                 {
  81                         return ! done;
  82                 }
  83
  84                 public string StatusName {
  85                         get {
  86                                 if (this.directory == null)
  87                                         return "Crawling the null directory?";
  88                                 return "Crawling " + this.directory.FullName;
  89                         }
  90                 }
  91
  92                 public void PostFlushHook ()
  93                 {
  94                         // Do nothing
  95                 }
  96         }
  97 }