vte: add 8-bit C1 code handlers (dummy)

Add handlers for C1 codes with a description what they are supposed to do. They
are not yet implemented and are no-ops.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/vte.c b/src/vte.c
index 476ddb9..6243078 100644 (file)
--- a/src/vte.c
+++ b/src/vte.c
@@ -175,24 +175,36 @@ static void do_execute(struct kmscon_vte *vte, uint32_t ctrl)
                        break;
                case 0x05: /* ENQ */
                        /* Transmit answerback message */
+                       /* TODO */
                        break;
                case 0x07: /* BEL */
                        /* Sound bell tone */
+                       /* TODO: I always considered this annying, however, we
+                        * should at least provide some way to enable it if the
+                        * user *really* wants it.
+                        */
                        break;
                case 0x08: /* BS */
                        /* Move cursor one position left */
+                       /* TODO: Do we really have auto-wrap feature here? vt520
+                        * doc says nothing about it. We should probably use
+                        * kmscon_console_move_left() here.
+                        */
                        kmscon_console_backspace(vte->con);
                        break;
                case 0x09: /* HT */
                        /* Move to next tab stop or end of line */
+                       /* TODO */
                        break;
                case 0x0a: /* LF */
                        /* Line feed or newline (CR/NL mode) */
+                       /* TODO: implement CR/NL mode */
                        kmscon_console_newline(vte->con);
                        break;
                case 0x0b: /* VT */
                case 0x0c: /* FF */
                        /* Line feed */
+                       /* TODO: does this depend on CR/NL, too? */
                        kmscon_console_move_down(vte->con, 1, true);
                        break;
                case 0x0d: /* CR */
@@ -200,23 +212,65 @@ static void do_execute(struct kmscon_vte *vte, uint32_t ctrl)
                        kmscon_console_move_line_home(vte->con);
                        break;
                case 0x0e: /* SO */
-                       /* Invoke G1 character set */
+                       /* Map G1 character set into GL */
+                       /* TODO */
                        break;
                case 0x0f: /* SI */
-                       /* Select G0 character set */
+                       /* Map G0 character set into Gl */
+                       /* TODO */
                        break;
                case 0x11: /* XON */
                        /* Resume transmission */
+                       /* TODO */
                        break;
                case 0x13: /* XOFF */
                        /* Stop transmission */
+                       /* TODO */
                        break;
                case 0x18: /* CAN */
+                       /* Cancel escape sequence */
+                       /* nothing to do here */
+                       break;
                case 0x1a: /* SUB */
                        /* Discard current escape sequence and show err-sym */
+                       /* TODO: show reversed question mark */
+                       kmscon_console_write(vte->con, '?');
                        break;
                case 0x1b: /* ESC */
                        /* Invokes an escape sequence */
+                       /* nothing to do here */
+                       break;
+               case 0x84: /* IND */
+                       /* Move down one row, perform scroll-up if needed */
+                       /* TODO */
+                       break;
+               case 0x85: /* NEL */
+                       /* CR/NL with scroll-up if needed */
+                       /* TODO */
+                       break;
+               case 0x88: /* HTS */
+                       /* Set tab stop at current position */
+                       /* TODO */
+                       break;
+               case 0x8d: /* RI */
+                       /* Move up one row, perform scroll-down if needed */
+                       /* TODO */
+                       break;
+               case 0x8e: /* SS2 */
+                       /* Temporarily map G2 into GL for next char only */
+                       /* TODO */
+                       break;
+               case 0x8f: /* SS3 */
+                       /* Temporarily map G3 into GL for next char only */
+                       /* TODO */
+                       break;
+               case 0x9a: /* DECID */
+                       /* Send device attributes response like ANSI DA */
+                       /* TODO*/
+                       break;
+               case 0x9c: /* ST */
+                       /* End control string */
+                       /* nothing to do here */
                        break;
        }
 }