1 files changed, 115 insertions, 0 deletions

diff --git a/src/WixToolset.Core.Native/WixNativeExe.cs b/src/WixToolset.Core.Native/WixNativeExe.cs
new file mode 100644
index 00000000..8626bea3
--- /dev/null
+++ b/src/WixToolset.Core.Native/WixNativeExe.cs
@@ -0,0 +1,115 @@
+// 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.Core.Native
+{
+    using System;
+    using System.Collections.Generic;
+    using System.ComponentModel;
+    using System.Diagnostics;
+    using System.IO;
+    using System.Reflection;
+
+    internal class WixNativeExe
+    {
+        private const int FiveMinutesInMilliseconds = 300000;
+        private static readonly string PathToWixNativeExe;
+
+        private readonly string commandLine;
+        private readonly List<string> stdinLines = new List<string>();
+
+        static WixNativeExe()
+        {
+            PathToWixNativeExe = Path.Combine(Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath), "x86\\wixnative.exe");
+        }
+
+        public WixNativeExe(params object[] args)
+        {
+            this.commandLine = String.Join(" ", QuoteArgumentsAsNecesary(args));
+        }
+
+        public void AddStdinLine(string line)
+        {
+            this.stdinLines.Add(line);
+        }
+
+        public void AddStdinLines(IEnumerable<string> lines)
+        {
+            this.stdinLines.AddRange(lines);
+        }
+
+        public IEnumerable<string> Run()
+        {
+            var wixNativeInfo = new ProcessStartInfo(PathToWixNativeExe, this.commandLine)
+            {
+                RedirectStandardInput = true,
+                RedirectStandardOutput = true,
+                CreateNoWindow = true,
+                ErrorDialog = false,
+                UseShellExecute = false
+            };
+
+            var stdoutLines = new List<string>();
+
+            using (var process = Process.Start(wixNativeInfo))
+            {
+                process.OutputDataReceived += (s, a) => stdoutLines.Add(a.Data);
+                process.BeginOutputReadLine();
+
+                if (this.stdinLines.Count > 0)
+                {
+                    foreach (var line in this.stdinLines)
+                    {
+                        process.StandardInput.WriteLine(line);
+                    }
+
+                    // Trailing blank line indicates stdin complete.
+                    process.StandardInput.WriteLine();
+                }
+
+                if (process.WaitForExit(FiveMinutesInMilliseconds))
+                {
+                    // If the process successfully exits documentation says we need to wait again
+                    // without a timeout to ensure that all of the redirected output is captured.
+                    //
+                    process.WaitForExit();
+                }
+
+                if (process.ExitCode != 0)
+                {
+                    throw new Win32Exception(process.ExitCode);
+                }
+            }
+
+            return stdoutLines;
+        }
+
+        private static IEnumerable<string> QuoteArgumentsAsNecesary(object[] args)
+        {
+            foreach (var arg in args)
+            {
+                if (arg is string str)
+                {
+                    if (String.IsNullOrEmpty(str))
+                    {
+                    }
+                    else if (str.Contains(" ") && !str.StartsWith("\""))
+                    {
+                        yield return $"\"{str}\"";
+                    }
+                    else
+                    {
+                        yield return str;
+                    }
+                }
+                else if (arg is int i)
+                {
+                    yield return i.ToString();
+                }
+                else
+                {
+                    throw new ArgumentException(nameof(args));
+                }
+            }
+        }
+    }
+}