MonoRail/Castle.MonoRail.TransformFilters/MarkdownTransformFilter.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.MonoRail.TransformFilters
  16 {
  17         using System;
  18         using System.IO;
  19         using System.Text;
  20         using anrControls;
  21         using Castle.MonoRail.Framework;
  22
  23         /// <summary>
  24         /// Post process the request via Markdown
  25         /// </summary>
  26         public class MarkdownTransformFilter : TransformFilter
  27         {
  28                 /// <summary>
  29                 /// Constructor of the MarkdownTransformFilter
  30                 /// </summary>
  31                 /// <param name="baseStream">output stream</param>
  32                 public MarkdownTransformFilter(Stream baseStream) : base(baseStream)
  33                 {
  34                 }
  35
  36                 /// <summary>
  37                 /// Pulls the http stream through the Markdown filter.
  38                 /// </summary>
  39                 /// <param name="buffer">The content stream</param>
  40                 /// <param name="offset">Start of the stream</param>
  41                 /// <param name="count">Lenght of the stream</param>
  42                 public override void Write(byte[] buffer, int offset, int count)
  43                 {
  44                         if (Closed) throw new ObjectDisposedException("MarkdownTransformFilter");
  45
  46                         string content = Encoding.Default.GetString(buffer, offset, count);
  47
  48                         Markdown markdown = new Markdown();
  49                         content = markdown.Transform(content);
  50
  51                         byte[] output = Encoding.Default.GetBytes(content);
  52                         BaseStream.Write(output,0, output.Length);
  53                 }
  54         }
  55 }