lelandrichardson · September 28, 2012 05:36 · Sep 28, 2012
diff --git a/InlineCssModule b/InlineCssModule
@@ -0,0 +1,117 @@
+using System;
+using System.IO;
+using System.Web;
+
+/// <summary>
+/// Removes CSS from rendered HTML page.
+/// </summary>
+public class InlineCssModule : IHttpModule
+{
+
+	#region IHttpModule Members
+
+	void IHttpModule.Dispose()
+	{
+		// Nothing to dispose; 
+	}
+
+	void IHttpModule.Init(HttpApplication context)
+	{
+		context.BeginRequest += new EventHandler(context_BeginRequest);
+	}
+
+	#endregion
+
+	static void context_BeginRequest(object sender, EventArgs e)
+	{
+		HttpApplication app = sender as HttpApplication;
+		if (app.Request.AppRelativeCurrentExecutionFilePath.StartsWith("~/media/email/"))
+		{
+			app.Response.Filter = new InlineCssFilter(app.Response.Filter);
+		}
+	}
+
+	#region Stream filter
+
+	private class InlineCssFilter : Stream
+	{
+		private static global::PreMailer.Net.PreMailer pm = new global::PreMailer.Net.PreMailer();
+		public InlineCssFilter(Stream sink)
+		{
+			_sink = sink;
+		}
+
+		private readonly Stream _sink;
+
+		#region Properites
+
+		public override bool CanRead
+		{
+			get { return true; }
+		}
+
+		public override bool CanSeek
+		{
+			get { return true; }
+		}
+
+		public override bool CanWrite
+		{
+			get { return true; }
+		}
+
+		public override void Flush()
+		{
+			_sink.Flush();
+		}
+
+		public override long Length
+		{
+			get { return 0; }
+		}
+
+		public override long Position { get; set; }
+
+		#endregion
+
+		#region Methods
+
+		public override int Read(byte[] buffer, int offset, int count)
+		{
+			return _sink.Read(buffer, offset, count);
+		}
+
+		public override long Seek(long offset, SeekOrigin origin)
+		{
+			return _sink.Seek(offset, origin);
+		}
+
+		public override void SetLength(long value)
+		{
+			_sink.SetLength(value);
+		}
+
+		public override void Close()
+		{
+			_sink.Close();
+		}
+
+		public override void Write(byte[] buffer, int offset, int count)
+		{
+			byte[] data = new byte[count];
+			Buffer.BlockCopy(buffer, offset, data, 0, count);
+			string html = System.Text.Encoding.Default.GetString(buffer);
+
+			html = pm.MoveCssInline(html, true);
+
+			byte[] outdata = System.Text.Encoding.Default.GetBytes(html);
+			_sink.Write(outdata, 0, outdata.GetLength(0));
+		}
+
+		#endregion
+
+	}
+
+	#endregion
+
+}