Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
An example HTTP module.
using System;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
namespace TestWebEssentialsBug
{
/// <summary>
/// Removes CSS from rendered HTML page.
/// </summary>
public class TestModule : 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)
{
var app = sender as HttpApplication;
app.Response.Filter = new TestFilter(app.Response.Filter);
}
private class TestFilter : Stream
{
private static readonly Regex eof = new Regex("</html>", RegexOptions.IgnoreCase);
public TestFilter(Stream sink)
{
_sink = sink;
_builder = new StringBuilder();
}
private readonly Stream _sink;
private StringBuilder _builder;
#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
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)
{
var html = System.Text.Encoding.Default.GetString(buffer);
_builder.Append(html);
if (!eof.IsMatch(html))
{
//buffer is not complete. wait until next time to transform HTML.
return;
}
var transformed = _builder.ToString();
var outdata = Encoding.Default.GetBytes(transformed);
_sink.Write(outdata, 0, outdata.GetLength(0));
}
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment