1 files changed, 113 insertions, 0 deletions
diff --git a/main/msbuild/MDBuildTasks/DownloadNupkg.cs b/main/msbuild/MDBuildTasks/DownloadNupkg.cs
new file mode 100644
index 0000000000..c379252d91
--- /dev/null
+++ b/main/msbuild/MDBuildTasks/DownloadNupkg.cs
@@ -0,0 +1,113 @@
+//
+// Copyright (c) Microsoft Corp (https://www.microsoft.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using Microsoft.Build.Framework;
+using Microsoft.Build.Utilities;
+using System.IO;
+using System.Text;
+
+namespace MDBuildTasks
+{
+	public class DownloadNupkg : ToolTask
+	{
+		[Required]
+		public ITaskItem[] Packages { get; set; }
+
+		[Required]
+		public string PackagesDirectory { get; set; }
+
+		[Required]
+		public string StampFile { get; set; }
+
+		[Required]
+		public string PackagesConfigFile { get; set; }
+
+		protected override string ToolName => "nuget";
+
+		protected override string GenerateFullPathToTool () => ToolExe;
+
+		protected override string GenerateCommandLineCommands ()
+		{
+			var builder = new StringBuilder ();
+			void AppendSpace ()
+			{
+				if (builder.Length > 0 && builder[builder.Length - 1] != ' ') {
+					builder.Append (' ');
+				}
+			}
+			void Append(string text)
+			{
+				AppendSpace ();
+				builder.Append (text);
+			}
+			void AppendQuoted (string text)
+			{
+				AppendSpace ();
+				builder.Append ('"');
+				builder.Append (text.Replace ("\"", "\\\"").TrimEnd ('\\'));
+				builder.Append ('"');
+			}
+
+			Append ("restore");
+
+			AppendQuoted (PackagesConfigFile);
+
+			Append ("-PackagesDirectory");
+			AppendQuoted (PackagesDirectory);
+
+			//Append ("-PackageSaveMode");
+			//Append ("nuspec;nupkg");
+
+			return builder.ToString ();
+		}
+
+		public override bool Execute ()
+		{
+			Directory.CreateDirectory (Path.GetDirectoryName (PackagesConfigFile));
+
+			using (var f = File.CreateText (PackagesConfigFile)) {
+				f.WriteLine ("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
+				f.WriteLine ("<packages>");
+				foreach (var package in Packages) {
+					var version = package.GetMetadata ("Version");
+					if (string.IsNullOrEmpty (version)) {
+						Log.LogError ($"Package {package.ItemSpec} has no version");
+					}
+					f.WriteLine ($"<package id=\"{package.ItemSpec}\" version=\"{version}\" />");
+				}
+				f.WriteLine ("</packages>");
+			}
+
+			var success = base.Execute ();
+
+			if (success && !string.IsNullOrEmpty (StampFile)) {
+				Directory.CreateDirectory (Path.GetDirectoryName (StampFile));
+				File.WriteAllText (StampFile, "");
+			} else {
+				if (File.Exists (StampFile)) {
+					File.Delete (StampFile);
+				}
+			}
+
+			return success;
+		}
+	}
+}