public TtyContext(ITrace trace, int fd, bool echo)
{
EnsureArgument.NotNull(trace, nameof(trace));
EnsureArgument.PositiveOrZero(fd, nameof(fd));
_trace = trace;
_fd = fd;
int error = 0;
// Capture current terminal settings so we can restore them later
if ((error = Termios.tcgetattr(_fd, out termios t)) != 0)
{
throw new InteropException("Failed to get initial terminal settings", error);
}
_originalTerm = t;
// Set desired echo state
_trace.WriteLine($"Setting terminal echo state to '{echo}'");
t.c_lflag &= echo
? LocalFlags.ECHO
: ~LocalFlags.ECHO;
if ((error = Termios.tcsetattr(_fd, SetActionFlags.TCSAFLUSH, ref t)) != 0)
{
throw new InteropException("Failed to set terminal settings", error);
}
}
public static int cfsetspeed(ref termios termios, uint speed)
{
termios.c_cflag &= ~CBAUD;
termios.c_cflag |= BOTHER;
termios.c_ispeed = speed;
termios.c_ospeed = speed;
return(0);
}
public static void cfmakeraw(ref termios termios)
{
// See https://linux.die.net/man/3/cfmakeraw "Raw mode" heading.
termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
termios.c_oflag &= ~OPOST;
termios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
termios.c_cflag &= ~(CSIZE | PARENB);
termios.c_cflag |= CS8;
}
public static extern int cfsetspeed(ref termios termios, UIntPtr speed);
public static extern void cfmakeraw(ref termios termios);
static extern int tcgetattr(int fd, out termios termios_p);
public static extern int tcsetattr(int fd, int optionsActoins, ref termios t);
public static int tcsetattr(int filedes, int actions, ref termios termios)
{
Debug.Assert(actions == TCSANOW);
return(ioctl(filedes, TCSETS2, ref termios));
}
public static int tcgetattr(int filedes, out termios termios)
{
termios = new termios();
return(ioctl(filedes, TCGETS2, ref termios));
}
private void memset(ref termios term, int p, int p_2)
{
throw new System.NotImplementedException();
}
public static extern int ioctl(int filedes, UIntPtr command, ref termios value);
private void tcsetattr(int input,int _T_FLUSH,ref termios term)
{
throw new System.NotImplementedException();
}
private void memset(ref termios term,int p,int p_2)
{
throw new System.NotImplementedException();
}
private int tcgetattr(int input, ref termios oterm)
{
throw new System.NotImplementedException();
}
private void tcsetattr(int input, int _T_FLUSH, ref termios term)
{
throw new System.NotImplementedException();
}
public static extern int tcgetattr(int filedes, out termios termios);
public static extern int tcsetattr(int filedes, int actions, ref termios termios);
private int tcgetattr(int input, ref termios oterm)
{
throw new System.NotImplementedException();
}
