1 files changed, 108 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.BuildTasks/NuGetPack.cs b/src/DotNetOpenAuth.BuildTasks/NuGetPack.cs
new file mode 100644
index 0000000..356c51f
--- /dev/null
+++ b/src/DotNetOpenAuth.BuildTasks/NuGetPack.cs
@@ -0,0 +1,108 @@
+//-----------------------------------------------------------------------
+// <copyright file="NuGetPack.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.BuildTasks {
+	using System;
+	using System.Collections.Generic;
+	using System.IO;
+	using System.Linq;
+	using System.Text;
+	using System.Xml.Linq;
+	using Microsoft.Build.Framework;
+	using Microsoft.Build.Utilities;
+
+	/// <summary>
+	/// Creates a .nupkg archive from a .nuspec file and content files.
+	/// </summary>
+	public class NuGetPack : ToolTask {
+		/// <summary>
+		/// Gets or sets the path to the .nuspec file.
+		/// </summary>
+		[Required]
+		public ITaskItem NuSpec { get; set; }
+
+		/// <summary>
+		/// Gets or sets the base directory, the contents of which gets included in the .nupkg archive.
+		/// </summary>
+		public ITaskItem BaseDirectory { get; set; }
+
+		/// <summary>
+		/// Gets or sets the path to the directory that will contain the generated .nupkg archive.
+		/// </summary>
+		public ITaskItem OutputPackageDirectory { get; set; }
+
+		/// <summary>
+		/// Returns the fully qualified path to the executable file.
+		/// </summary>
+		/// <returns>
+		/// The fully qualified path to the executable file.
+		/// </returns>
+		protected override string GenerateFullPathToTool() {
+			return this.ToolPath;
+		}
+
+		/// <summary>
+		/// Gets the name of the executable file to run.
+		/// </summary>
+		/// <returns>The name of the executable file to run.</returns>
+		protected override string ToolName {
+			get { return "NuGet.exe"; }
+		}
+
+		/// <summary>
+		/// Runs the exectuable file with the specified task parameters.
+		/// </summary>
+		/// <returns>
+		/// true if the task runs successfully; otherwise, false.
+		/// </returns>
+		public override bool Execute() {
+			if (this.OutputPackageDirectory != null && Path.GetDirectoryName(this.OutputPackageDirectory.ItemSpec).Length > 0) {
+				Directory.CreateDirectory(Path.GetDirectoryName(this.OutputPackageDirectory.ItemSpec));
+			}
+
+			string fullPackagePath = this.DeriveFullPackagePath();
+			this.Log.LogMessage("Creating NuGet package '{0}'.", fullPackagePath);
+
+			bool result = base.Execute();
+
+			if (result) {
+				this.Log.LogMessage(MessageImportance.High, "Successfully created package '{0}'.", fullPackagePath);
+			}
+
+			return result;
+		}
+
+		/// <summary>
+		/// Returns a string value containing the command line arguments to pass directly to the executable file.
+		/// </summary>
+		/// <returns>
+		/// A string value containing the command line arguments to pass directly to the executable file.
+		/// </returns>
+		protected override string GenerateCommandLineCommands() {
+			var args = new CommandLineBuilder();
+
+			args.AppendSwitch("pack");
+			args.AppendFileNameIfNotNull(this.NuSpec);
+			args.AppendSwitchIfNotNull("-b ", this.BaseDirectory);
+			args.AppendSwitchIfNotNull("-o ", this.OutputPackageDirectory);
+
+			return args.ToString();
+		}
+
+		/// <summary>
+		/// Derives the path to the generated .nupkg file.
+		/// </summary>
+		/// <returns>A relative path.</returns>
+		private string DeriveFullPackagePath() {
+			var spec = XDocument.Load(this.NuSpec.ItemSpec);
+			var metadata = spec.Element("package").Element("metadata");
+			string id = metadata.Element("id").Value;
+			string version = metadata.Element("version").Value;
+			string baseDirectory = this.OutputPackageDirectory != null ? this.OutputPackageDirectory.ItemSpec : String.Empty;
+			return Path.Combine(baseDirectory, String.Format("{0}.{1}.nupkg", id, version));
+		}
+	}
+}