1 files changed, 53 insertions, 0 deletions

diff --git a/src/WixToolset.BuildTasks/WixBuild_InProc.cs b/src/WixToolset.BuildTasks/WixBuild_InProc.cs
new file mode 100644
index 00000000..8e9f2fec
--- /dev/null
+++ b/src/WixToolset.BuildTasks/WixBuild_InProc.cs
@@ -0,0 +1,53 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.BuildTasks
+{
+    using WixToolset.Data;
+    using WixToolset.Extensibility;
+    using WixToolset.Extensibility.Data;
+    using WixToolset.Extensibility.Services;
+
+    public partial class WixBuild
+    {
+        protected override string TaskShortName => "WIX";
+
+        protected override int ExecuteCore(IWixToolsetServiceProvider serviceProvider, IMessageListener listener, string commandLineString)
+        {
+            var messaging = serviceProvider.GetService<IMessaging>();
+            messaging.SetListener(listener);
+
+            var arguments = serviceProvider.GetService<ICommandLineArguments>();
+            arguments.Populate(commandLineString);
+
+            var commandLine = serviceProvider.GetService<ICommandLine>();
+            commandLine.ExtensionManager = this.CreateExtensionManagerWithStandardBackends(serviceProvider, messaging, arguments.Extensions);
+            commandLine.Arguments = arguments;
+            var command = commandLine.ParseStandardCommandLine();
+            return command?.Execute() ?? -1;
+        }
+
+        private IExtensionManager CreateExtensionManagerWithStandardBackends(IWixToolsetServiceProvider serviceProvider, IMessaging messaging, string[] extensions)
+        {
+            var extensionManager = serviceProvider.GetService<IExtensionManager>();
+
+            foreach (var type in new[] { typeof(WixToolset.Core.Burn.WixToolsetStandardBackend), typeof(WixToolset.Core.WindowsInstaller.WixToolsetStandardBackend) })
+            {
+                extensionManager.Add(type.Assembly);
+            }
+
+            foreach (var extension in extensions)
+            {
+                try
+                {
+                    extensionManager.Load(extension);
+                }
+                catch (WixException e)
+                {
+                    messaging.Write(e.Error);
+                }
+            }
+
+            return extensionManager;
+        }
+    }
+}