IronRuby.Builtins.RubyIOOps.IsAtty C# (CSharp) Method

        public static bool IsAtty(RubyIO/*!*/ self) {
            ConsoleStreamType? console = self.ConsoleStreamType;
            if (console == null) {
                return self.GetStream().BaseStream == Stream.Null;
            }

            int fd = GetStdHandleFd(console.Value);
            switch (Environment.OSVersion.Platform) {
                case PlatformID.Win32NT:
                case PlatformID.Win32S:
                case PlatformID.Win32Windows:
                case PlatformID.WinCE:
                    IntPtr handle = GetStdHandle(fd);
                    if (handle == IntPtr.Zero) {
                        throw new Win32Exception();
                    }

                    return GetFileType(handle) == FILE_TYPE_CHAR;

                default:
                    return isatty(fd) == 1;
            }
        }