check for console before setting encoding

Seatbelt/Interop/Kernel32.cs

@@ -74,6 +74,10 @@ public struct WIN32_FIND_DATA
  [DllImport("kernel32.dll", SetLastError = true)]
  public static extern bool GetNamedPipeServerSessionId(IntPtr hPipe, out int ProcessId);
 
+ [DllImport("kernel32.dll")]
+ public static extern IntPtr GetConsoleWindow();
+
+
  [Flags]
  public enum ProcessAccess
  {

Seatbelt/Output/TextWriters/ConsoleTextWriter.cs

@@ -1,11 +1,16 @@
 using System;
 using System.Text;
+using Seatbelt.Interop;
 
 namespace Seatbelt.Output.TextWriters
 {
  internal class ConsoleTextWriter : ITextWriter
  {
- public ConsoleTextWriter() => Console.OutputEncoding = Encoding.UTF8;
+ public ConsoleTextWriter()
+ {
+ if(IsConsolePresent())
+ Console.OutputEncoding = Encoding.UTF8;
+ }
 
  public void Write(string str)
  => Console.Write(str);
@@ -21,5 +26,10 @@ public void WriteLine(string str)
  public void Dispose()
  {
  }
+
+ bool IsConsolePresent()
+ {
+ return Kernel32.GetConsoleWindow() != IntPtr.Zero;
+ }
  }
 }

Seatbelt/Seatbelt.cs

@@ -13,7 +13,7 @@ public class Seatbelt : IDisposable
 
  private readonly IOutputSink _outputSink;
  private readonly Runtime _runtime;
- private const string Version = "1.2.1";
+ private const string Version = "1.2.2";
  private SeatbeltOptions Options { get; set; }
 
  public Seatbelt(string[] args)