public static RubyIO /*!*/ OpenPipe(RubyContext /*!*/ context, RubyClass /*!*/ self,
[DefaultProtocol, NotNull] MutableString /*!*/ command, [DefaultProtocol, Optional, NotNull] MutableString modeString)
{
bool preserveEndOfLines;
IOMode mode = RubyIO.ParseIOMode(modeString.ConvertToString(), out preserveEndOfLines);
ProcessStartInfo startInfo = KernelOps.GetShell(context, command);
startInfo.UseShellExecute = false;
if (mode == IOMode.ReadOnlyFromStart)
{
startInfo.RedirectStandardOutput = true;
}
else if (mode == IOMode.WriteOnlyAppend || mode == IOMode.WriteOnlyTruncate)
{
startInfo.RedirectStandardInput = true;
}
else
{
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardInput = true;
}
Process process;
try {
process = Process.Start(startInfo);
} catch (Exception e) {
throw new Errno.NoEntryError(startInfo.FileName, e);
}
context.ChildProcessExitStatus = new RubyProcess.Status(process);
StreamReader reader = null;
StreamWriter writer = null;
if (startInfo.RedirectStandardOutput)
{
reader = process.StandardOutput;
}
if (startInfo.RedirectStandardInput)
{
writer = process.StandardInput;
}
return(new RubyIO(context, reader, writer, modeString.ConvertToString()));
}
