Filters/FilterChm.cs

   1 //
   2 // FilterChm.cs : Trivial implementation of a CHM filter.
   3 //
   4 // Copyright (C) 2005,2006 Miguel Cabrera <mfcabrera@gmail.com>
   5 //
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining a
   8 // copy of this software and associated documentation files (the "Software"),
   9 // to deal in the Software without restriction, including without limitation
  10 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11 // and/or sell copies of the Software, and to permit persons to whom the
  12 // Software is furnished to do so, subject to the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be included in
  15 // all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23 // DEALINGS IN THE SOFTWARE.
  24 //
  25
  26 using System;
  27 using System.Collections;
  28 using System.IO;
  29 using System.Text;
  30 using HtmlAgilityPack;
  31
  32 using Beagle.Util;
  33 using Beagle.Daemon;
  34
  35 namespace Beagle.Filters {
  36
  37         public class FilterChm : FilterHtml  {
  38
  39                 ChmFile chmFile;
  40
  41                 public FilterChm () : base()
  42                 {
  43
  44                         RegisterSupportedTypes ();
  45                         SnippetMode = true;
  46
  47                 }
  48
  49                 override protected void DoOpen (FileInfo info)
  50                 {
  51
  52                         chmFile = new ChmFile ();
  53
  54
  55                         try {
  56
  57                                 chmFile.Load(info.FullName);
  58
  59                         }
  60                         catch (Exception e) {
  61
  62                                 Logger.Log.Warn ("Could not load {0}: {1}", info.Name, e.Message);
  63                                 Finished ();
  64                                 return;
  65
  66                         }
  67
  68
  69                         chmFile.ParseContents (FilterFileContents);
  70
  71
  72
  73                 }
  74
  75                 public void FilterFileContents(TextReader text) {
  76
  77                         HtmlDocument doc = new HtmlDocument ();
  78                         doc.StreamMode = true;
  79                         doc.ReportNode += HandleNodeEvent;
  80
  81                         try {
  82                                 doc.Load (text);
  83
  84                         }
  85                         catch (Exception e) {
  86                                 Logger.Log.Warn ("Error parsing file contents: {0}",e.Message);
  87                                 //Console.WriteLine (e.Message);
  88                                 //Console.WriteLine (e.StackTrace);
  89                         }
  90
  91
  92                 }
  93
  94                 override protected void DoPullProperties()
  95                 {
  96
  97                         if(chmFile.Title != "")
  98                                 AddProperty (Beagle.Property.New ("dc:title", chmFile.Title));
  99
 100
 101                 }
 102
 103                 override protected void DoPull()
 104                 {
 105
 106
 107                         Finished ();
 108
 109
 110                 }
 111
 112                 override protected void  DoClose()
 113                 {
 114                         chmFile.Dispose ();
 115
 116                 }
 117
 118                 override protected  void  RegisterSupportedTypes()
 119                 {
 120                         AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-chm"));
 121                 }
 122
 123         }
 124 }