Last change for http support, adding a simple reader for query strings and/or
url-encoded form data to support restful apis.  Also exposed the mime to reader
and mime to writer via dictionaries in the MessageFormatOptions structure.
diff --git a/src/ProtocolBuffers.Test/TestReaderForUrlEncoded.cs b/src/ProtocolBuffers.Test/TestReaderForUrlEncoded.cs
new file mode 100644
index 0000000..7861e98
--- /dev/null
+++ b/src/ProtocolBuffers.Test/TestReaderForUrlEncoded.cs
@@ -0,0 +1,84 @@
+using System;

+using System.IO;

+using System.Text;

+using NUnit.Framework;

+using Google.ProtocolBuffers.TestProtos;

+using Google.ProtocolBuffers.Serialization.Http;

+

+namespace Google.ProtocolBuffers

+{

+    [TestFixture]

+    public class TestReaderForUrlEncoded

+    {

+        [Test]

+        public void Example_FromQueryString()

+        {

+            Uri sampleUri = new Uri("http://sample.com/Path/File.ext?text=two+three%20four&valid=true&numbers=1&numbers=2", UriKind.Absolute);

+

+            ICodedInputStream input = FormUrlEncodedReader.CreateInstance(sampleUri.Query);

+

+            TestXmlMessage.Builder builder = TestXmlMessage.CreateBuilder();

+            builder.MergeFrom(input);

+            

+            TestXmlMessage message = builder.Build();

+            Assert.AreEqual(true, message.Valid);

+            Assert.AreEqual("two three four", message.Text);

+            Assert.AreEqual(2, message.NumbersCount);

+            Assert.AreEqual(1, message.NumbersList[0]);

+            Assert.AreEqual(2, message.NumbersList[1]);

+        }

+

+        [Test]

+        public void Example_FromFormData()

+        {

+            Stream rawPost = new MemoryStream(Encoding.UTF8.GetBytes("text=two+three%20four&valid=true&numbers=1&numbers=2"), false);

+

+            ICodedInputStream input = FormUrlEncodedReader.CreateInstance(rawPost);

+

+            TestXmlMessage.Builder builder = TestXmlMessage.CreateBuilder();

+            builder.MergeFrom(input);

+

+            TestXmlMessage message = builder.Build();

+            Assert.AreEqual(true, message.Valid);

+            Assert.AreEqual("two three four", message.Text);

+            Assert.AreEqual(2, message.NumbersCount);

+            Assert.AreEqual(1, message.NumbersList[0]);

+            Assert.AreEqual(2, message.NumbersList[1]);

+        }

+

+        [Test]

+        public void TestEmptyValues()

+        {

+            ICodedInputStream input = FormUrlEncodedReader.CreateInstance("valid=true&text=&numbers=1");

+            TestXmlMessage.Builder builder = TestXmlMessage.CreateBuilder();

+            builder.MergeFrom(input);

+

+            Assert.IsTrue(builder.Valid);

+            Assert.IsTrue(builder.HasText);

+            Assert.AreEqual("", builder.Text);

+            Assert.AreEqual(1, builder.NumbersCount);

+            Assert.AreEqual(1, builder.NumbersList[0]);

+        }

+

+        [Test]

+        public void TestNoValue()

+        {

+            ICodedInputStream input = FormUrlEncodedReader.CreateInstance("valid=true&text&numbers=1");

+            TestXmlMessage.Builder builder = TestXmlMessage.CreateBuilder();

+            builder.MergeFrom(input);

+

+            Assert.IsTrue(builder.Valid);

+            Assert.IsTrue(builder.HasText);

+            Assert.AreEqual("", builder.Text);

+            Assert.AreEqual(1, builder.NumbersCount);

+            Assert.AreEqual(1, builder.NumbersList[0]);

+        }

+

+        [Test, ExpectedException(typeof(NotSupportedException))]

+        public void FormUrlEncodedReaderDoesNotSupportChildren()

+        {

+            ICodedInputStream input = FormUrlEncodedReader.CreateInstance("child=uh0");

+            TestXmlMessage.CreateBuilder().MergeFrom(input);

+        }

+    }

+}