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                                 chmFile.Load(info.FullName);
  57                         } catch (Exception e) {
  58                                 Logger.Log.Warn (e, "Could not load {0}:", info.Name);
  59                                 Finished ();
  60                                 return;
  61                         }
  62
  63                         chmFile.ParseContents (FilterFileContents);
  64                 }
  65
  66                 public void FilterFileContents(TextReader text) {
  67
  68                         HtmlDocument doc = new HtmlDocument ();
  69                         doc.StreamMode = true;
  70                         doc.ReportNode += HandleNodeEvent;
  71
  72                         try {
  73                                 doc.Load (text);
  74
  75                         }
  76                         catch (Exception e) {
  77                                 Logger.Log.Warn (e, "Error parsing file contents");
  78                                 //Console.WriteLine (e.Message);
  79                                 //Console.WriteLine (e.StackTrace);
  80                         }
  81
  82
  83                 }
  84
  85                 override protected void DoPullProperties()
  86                 {
  87                         AddProperty (Beagle.Property.New ("dc:title", chmFile.Title));
  88                 }
  89
  90                 override protected void DoPull()
  91                 {
  92                         Finished ();
  93                 }
  94
  95                 override protected void  DoClose()
  96                 {
  97                         chmFile.Dispose ();
  98                 }
  99
 100                 override protected  void  RegisterSupportedTypes()
 101                 {
 102                         AddSupportedFlavor (FilterFlavor.NewFromMimeType ("application/x-chm"));
 103                 }
 104
 105         }
 106 }