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From:	"amir knippel" <amir AT spinux DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	Using bash(cygwin) inside C# program
Date:	Thu, 24 Sep 2009 00:04:23 +0300
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Hey everyone,

i need to use bash shell "inside" C# program. I want to mimic user typing in
interactive mode and running cygwin commands.
i created a process that runs bash and redirect stdin,stout and std error
but I can=92t get tty to work attached is a sample code that starts bash
process and redirect the input/output.
the problem is that i don't have tty device. if i try to run tty command or
stty command i receive error response=20
tty - not a tty=20
stty - Inappropriate ioctl for device

i think the this is caused from psi.UseShellExecute =3D false;=20
i need to run cygwin and disable echo with stty -echo but to do this i need
a tty device. how can i create a cygwin bash shell with tty device and
redirect the stdin, out and error ?

Here is simplified code:

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;

namespace shartCygwin
{
=A0 =A0 class Program
=A0 =A0 {
=A0 =A0 =A0 =A0 private static Queue<string> ResponseQueue =3D null;
=A0 =A0 =A0 =A0 private static ManualResetEvent ResponseEvent =3D null;

=A0 =A0 =A0 =A0 static void Main(string[] args)
=A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 ResponseQueue =3D new Queue<string>();
=A0 =A0 =A0 =A0 =A0 =A0 ResponseEvent =3D new ManualResetEvent(false);

=A0 =A0 =A0 =A0 =A0 =A0 Process bashProcess =3D new Process();

=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.FileName =3D "C:\\cygwin\\bin=
\\bash.exe";=20
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.Arguments =3D "--login -i "; =
=A0
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.WorkingDirectory =3D "C:\\cyg=
win\\bin";

=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.EnvironmentVariables["CYGWIN"=
] =3D "tty";

=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.RedirectStandardError =3D tru=
e;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.RedirectStandardInput =3D tru=
e;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.RedirectStandardOutput =3D tr=
ue;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.CreateNoWindow =3D true;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.UseShellExecute =3D false;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.StartInfo.ErrorDialog =3D false;

=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.Start();

=A0 =A0 =A0 =A0 =A0 =A0 DataReceivedEventHandler errorEventHandler =3D new
DataReceivedEventHandler(ErrorDataReceived);
=A0 =A0 =A0 =A0 =A0 =A0 DataReceivedEventHandler outEventHandler =3D new
DataReceivedEventHandler(OutDataReceived);
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.OutputDataReceived +=3D outEventHandler;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.ErrorDataReceived +=3D errorEventHandle=
r;
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.BeginErrorReadLine();
=A0 =A0 =A0 =A0 =A0 =A0 bashProcess.BeginOutputReadLine();

=A0 =A0 =A0 =A0 =A0 =A0 while(true)
=A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Thread.Sleep(1000);
=A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 }

=A0 =A0 =A0 =A0 static void ErrorDataReceived(object sender, DataReceivedEv=
entArgs
dataReceivedEventArgs)
=A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 try
=A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 lock (ResponseQueue)
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Console.WriteLine(dataReceivedEvent=
Args.Data);
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ResponseQueue.Enqueue(dataReceivedE=
ventArgs.Data);
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ResponseEvent.Set();
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 =A0 =A0 catch (Exception e)
=A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Console.WriteLine(e.Data);
=A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 }

=A0 =A0 =A0 =A0 static void OutDataReceived(object sender, DataReceivedEven=
tArgs
dataReceivedEventArgs)
=A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 try
=A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 lock (ResponseQueue)
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Console.WriteLine(dataReceivedEvent=
Args.Data);
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ResponseQueue.Enqueue(dataReceivedE=
ventArgs.Data);
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ResponseEvent.Set();
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 =A0 =A0 catch (Exception e)
=A0 =A0 =A0 =A0 =A0 =A0 {
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Console.WriteLine(e.Data);
=A0 =A0 =A0 =A0 =A0 =A0 }
=A0 =A0 =A0 =A0 }
=A0 =A0 }
}



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