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[Linux] Improve checks for TTY

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This commit is contained in:
thefiddler 2014-07-14 21:07:28 +00:00
parent 9e73358dd7
commit e7bd311fbd
3 changed files with 26 additions and 1 deletions
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6
Source/OpenTK/Platform/Linux/Bindings/Libc.cs
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@ -37,6 +37,12 @@ namespace OpenTK.Platform.Linux
{
const string lib = "libc";
[DllImport(lib)]
public static extern int dup(int file);
[DllImport(lib)]
public static extern int dup2(int file1, int file2);
[DllImport(lib)]
public static extern int ioctl(int d, JoystickIoctlCode request, ref int data);

4
Source/OpenTK/Platform/Linux/Bindings/Terminal.cs
View file

@ -36,6 +36,10 @@ namespace OpenTK.Platform.Linux
{
const string lib = "libc";
[DllImport(lib, EntryPoint = "isatty", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.I4)]
public static extern bool IsTerminal(int fd);
[DllImport(lib, EntryPoint = "tcgetattr", CallingConvention = CallingConvention.Cdecl)]
public static extern int GetAttributes(int fd, out TerminalState state);

17
Source/OpenTK/Platform/Linux/LinuxKeyboardTTY.cs
View file

@ -47,9 +47,12 @@ namespace OpenTK.Platform.Linux
TerminalState current_state;
IntPtr original_mode = new IntPtr(-1);
int original_stdin;
public LinuxKeyboardTTY()
{
Debug.Print("[Linux] Using TTY keyboard input.");
if (!SetupTTY(stdin))
{
throw new NotSupportedException();
@ -64,6 +67,16 @@ namespace OpenTK.Platform.Linux
bool SetupTTY(int stdin)
{
// Ensure that we are using a real terminal,
// rather than some short of file redirection.thing.
if (!Terminal.IsTerminal(stdin))
{
Debug.Print("[Linux] Terminal.IsTerminal({0}) returned false.", stdin);
return false;
}
//original_stdin = Libc.dup(stdin);
int ret = Terminal.GetAttributes(stdin, out original_state);
if (ret < 0)
{
@ -83,7 +96,7 @@ namespace OpenTK.Platform.Linux
// Update terminal state
current_state = original_state;
current_state.LocalMode &= ~(LocalFlags.ECHO | LocalFlags.ICANON | LocalFlags.ISIG);
current_state.LocalMode &= ~(/*LocalFlags.ECHO |*/ LocalFlags.ICANON | LocalFlags.ISIG);
current_state.InputMode &= ~(
InputFlags.ISTRIP | InputFlags.IGNCR | InputFlags.ICRNL |
InputFlags.INLCR | InputFlags.IXOFF | InputFlags.IXON);
@ -113,6 +126,8 @@ namespace OpenTK.Platform.Linux
{
if (original_mode != new IntPtr(-1))
{
Debug.Print("[Linux] Exiting TTY keyboard input.");
Libc.ioctl(stdin, KeyboardIoctlCode.SetMode, ref original_mode);
Terminal.SetAttributes(stdin, OptionalActions.FLUSH, ref original_state);
original_mode = new IntPtr(-1);