moved go stuff arround

[svn42.git] / go / termios / termios.go

diff --git a/go/termios/termios.go b/go/termios/termios.go
new file mode 100644 (file)
index 0000000..11325c9
--- /dev/null
+++ b/go/termios/termios.go
@@ -0,0 +1,121 @@
+package termios
+
+import (
+    "fmt";
+    "os";
+    "syscall";
+    "unsafe"
+    "errors"
+)
+
+// termios types
+type cc_t byte
+type speed_t uint
+type tcflag_t uint
+
+// termios constants
+const (
+    BRKINT = tcflag_t (0000002);
+    ICRNL = tcflag_t (0000400);
+    INPCK = tcflag_t (0000020);
+    ISTRIP = tcflag_t (0000040);
+    IXON = tcflag_t (0002000);
+    OPOST = tcflag_t (0000001);
+    CS8 = tcflag_t (0000060);
+    ECHO = tcflag_t (0000010);
+    ICANON = tcflag_t (0000002);
+    IEXTEN = tcflag_t (0100000);
+    ISIG = tcflag_t (0000001);
+    VTIME = tcflag_t (5);
+    VMIN = tcflag_t (6)
+)
+
+const NCCS = 32
+type termios struct {
+    c_iflag, c_oflag, c_cflag, c_lflag tcflag_t;
+    c_line cc_t;
+    c_cc [NCCS]cc_t;
+    c_ispeed, c_ospeed speed_t
+}
+
+// ioctl constants
+const (
+    TCGETS = 0x5401;
+    TCSETS = 0x5402
+)
+
+var (
+    orig_termios termios;
+    ttyfd uintptr = 0 // STDIN_FILENO
+)
+
+func Ttyfd(fd uintptr) {
+  ttyfd=fd
+}
+
+func getTermios (dst *termios) error {
+    r1, _, errno := syscall.Syscall (syscall.SYS_IOCTL,
+                                     uintptr (ttyfd), uintptr (TCGETS),
+                                     uintptr (unsafe.Pointer (dst)));
+
+    if err := os.NewSyscallError ("SYS_IOCTL", errno); errno!=0 && err != nil {
+        return err
+    }
+
+    if r1 != 0 {
+    //    return errors.New("Error")
+    }
+
+    return nil
+}
+
+func setTermios (src *termios) error {
+    r1, _, errno := syscall.Syscall (syscall.SYS_IOCTL,
+                                     uintptr (ttyfd), uintptr (TCSETS),
+                                     uintptr (unsafe.Pointer (src)));
+
+    if err := os.NewSyscallError ("SYS_IOCTL", errno); errno!=0 &&err != nil {
+        return err
+    }
+
+    if r1 != 0 {
+        return errors.New ("Error")
+    }
+
+    return nil
+}
+
+func tty_raw () error {
+    raw := orig_termios;
+
+    raw.c_iflag &= ^(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+    raw.c_oflag &= ^(OPOST);
+    raw.c_cflag |= (CS8);
+    raw.c_lflag &= ^(ECHO | ICANON | IEXTEN | ISIG);
+
+    raw.c_cc[VMIN] = 1;
+    raw.c_cc[VTIME] = 0;
+
+    if err := setTermios (&raw); err != nil { return err }
+
+    return nil
+}
+
+func SetRaw () {
+    var (
+        err error
+    )
+
+    defer func () {
+        if err != nil { fmt.Printf ("SetRaw Error: %v\n",err) }
+    } ();
+
+    if err = getTermios (&orig_termios); err != nil { return }
+
+//    defer func () {
+//        err = setTermios (&orig_termios)
+//    } ();
+
+    if err = tty_raw (); err != nil { return }
+    //if err = screenio (); err != nil { return }
+}