1 files changed, 55 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core/Messaging/TimespanSecondsEncoder.cs b/src/DotNetOpenAuth.Core/Messaging/TimespanSecondsEncoder.cs
new file mode 100644
index 0000000..b28e5a8
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+++ b/src/DotNetOpenAuth.Core/Messaging/TimespanSecondsEncoder.cs
@@ -0,0 +1,55 @@
+//-----------------------------------------------------------------------
+// <copyright file="TimespanSecondsEncoder.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.Messaging {
+	using System;
+	using System.Globalization;
+	using DotNetOpenAuth.Messaging.Reflection;
+
+	/// <summary>
+	/// Encodes and decodes the <see cref="TimeSpan"/> as an integer of total seconds.
+	/// </summary>
+	internal class TimespanSecondsEncoder : IMessagePartEncoder {
+		/// <summary>
+		/// Initializes a new instance of the <see cref="TimespanSecondsEncoder"/> class.
+		/// </summary>
+		public TimespanSecondsEncoder() {
+			// Note that this constructor is public so it can be instantiated via Activator.
+		}
+
+		#region IMessagePartEncoder Members
+
+		/// <summary>
+		/// Encodes the specified value.
+		/// </summary>
+		/// <param name="value">The value.  Guaranteed to never be null.</param>
+		/// <returns>
+		/// The <paramref name="value"/> in string form, ready for message transport.
+		/// </returns>
+		public string Encode(object value) {
+			TimeSpan? timeSpan = value as TimeSpan?;
+			if (timeSpan.HasValue) {
+				return timeSpan.Value.TotalSeconds.ToString(CultureInfo.InvariantCulture);
+			} else {
+				return null;
+			}
+		}
+
+		/// <summary>
+		/// Decodes the specified value.
+		/// </summary>
+		/// <param name="value">The string value carried by the transport.  Guaranteed to never be null, although it may be empty.</param>
+		/// <returns>
+		/// The deserialized form of the given string.
+		/// </returns>
+		/// <exception cref="FormatException">Thrown when the string value given cannot be decoded into the required object type.</exception>
+		public object Decode(string value) {
+			return TimeSpan.FromSeconds(double.Parse(value, CultureInfo.InvariantCulture));
+		}
+
+		#endregion
+	}
+}