aio: tty: Add support for vstart and vstop

xonxoff start and stop chars

Signed-off-by: Steve Bennett <[email protected]>

Author: msteveb

jim-aio.c

@@ -2145,7 +2145,7 @@ static const jim_subcmd_type aio_command_table[] = {
 #endif
 #if defined(HAVE_TERMIOS_H)
     {   "tty",
-        "?baud rate? ?data bits? ?stop bits? ?parity even|odd|none? ?handshake xonxoff|rtscts|none? ?input raw|cooked? ?output raw|cooked? ?echo 0|1? ?vmin n? ?vtime n?",
+        "?baud rate? ?data bits? ?stop bits? ?parity even|odd|none? ?handshake xonxoff|rtscts|none? ?input raw|cooked? ?output raw|cooked? ?echo 0|1? ?vmin n? ?vtime n? ?vstart char? ?vstop char?",
         aio_cmd_tty,
         0,
         -1,

jim-tty.c

@@ -79,6 +79,8 @@ static const char * const tty_settings_names[] = {
     "vmin",
     "vtime",
     "echo",
+    "vstart",
+    "vstop",
     NULL
 };
 
@@ -92,7 +94,9 @@ enum {
     OPT_STOP,
     OPT_VMIN,
     OPT_VTIME,
-    OPT_ECHO
+    OPT_ECHO,
+    OPT_VSTART,
+    OPT_VSTOP,
 };
 
 
@@ -184,6 +188,10 @@ Jim_Obj *Jim_GetTtySettings(Jim_Interp *interp, int fd)
     Jim_ListAppendElement(interp, listObjPtr, Jim_NewIntObj(interp, tio.c_cc[VMIN]));
     Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, "vtime", -1));
     Jim_ListAppendElement(interp, listObjPtr, Jim_NewIntObj(interp, tio.c_cc[VTIME]));
+    Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, "vstart", -1));
+    Jim_ListAppendElement(interp, listObjPtr, Jim_NewIntObj(interp, tio.c_cc[VSTART]));
+    Jim_ListAppendElement(interp, listObjPtr, Jim_NewStringObj(interp, "vstop", -1));
+    Jim_ListAppendElement(interp, listObjPtr, Jim_NewIntObj(interp, tio.c_cc[VSTOP]));
 
     speed = cfgetispeed(&tio);
     baud = 0;
@@ -283,17 +291,18 @@ int Jim_SetTtySettings(Jim_Interp *interp, int fd, Jim_Obj *dictObjPtr)
                 break;
 
             case OPT_VMIN:
-                if (Jim_GetLong(interp, valueObj, &l) != JIM_OK) {
-                    goto badvalue;
-                }
-                tio.c_cc[VMIN] = l;
-                break;
-
             case OPT_VTIME:
+            case OPT_VSTART:
+            case OPT_VSTOP:
                 if (Jim_GetLong(interp, valueObj, &l) != JIM_OK) {
                     goto badvalue;
                 }
-                tio.c_cc[VTIME] = l;
+                switch (opt) {
+                    case OPT_VMIN: tio.c_cc[VMIN] = l; break;
+                    case OPT_VTIME: tio.c_cc[VTIME] = l; break;
+                    case OPT_VSTART: tio.c_cc[VSTART] = l; break;
+                    case OPT_VSTOP: tio.c_cc[VSTOP] = l; break;
+                }
                 break;
 
             case OPT_OUTPUT:

jim_tcl.txt

@@ -5173,6 +5173,12 @@ This command returns an empty string.
     +*vtime* 'time'+;;
         Timeout for noncanonical read (units of 0.1 seconds)
 
+    +*vstart* 'char'+;;
+        Start character for xonoff, usually 0x11 (^Q)
+
+    +*vstop* 'char'+;;
+        Stop character for xonoff, usually 0x13 (^S)
+
 +$handle *ssl* ?*-server* 'cert ?key?'|*-sni* 'servername'?+::
     Upgrades the stream to a SSL/TLS session and returns the handle.
     If +-server+ is specified, either both the certificate and private key files

tests/tty.test

@@ -25,7 +25,7 @@ test tty-1.1 {tty status} {
 
 test tty-1.2 {tty bad param} -body {
     $chan tty bad value
-} -returnCodes error -result {bad setting "bad": must be baud, data, echo, handshake, input, output, parity, stop, vmin, or vtime}
+} -returnCodes error -result {bad setting "bad": must be baud, data, echo, handshake, input, output, parity, stop, vmin, vstart, vstop, or vtime}
 
 test tty-1.3 {tty bad baud} -body {
     $chan tty baud 12345