diff options
| -rw-r--r-- | src/vty/vty.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/vty/vty.c b/src/vty/vty.c index 76c6ef55..a39f2680 100644 --- a/src/vty/vty.c +++ b/src/vty/vty.c @@ -459,6 +459,7 @@ static int vty_command(struct vty *vty) static const char telnet_backward_char = 0x08; static const char telnet_space_char = ' '; +static const char telnet_escape_char = 0x1B; /* Basic function to write buffer to vty. */ static void vty_write(struct vty *vty, const char *buf, size_t nbytes) @@ -858,6 +859,19 @@ static void vty_down_level(struct vty *vty) vty->cp = 0; } +/* When '^L' is typed, clear all lines above the current one. */ +static void vty_clear_screen(struct vty *vty) +{ + vty_out(vty, "%c%s%c%s", + telnet_escape_char, + "[2J", /* Erase Screen */ + telnet_escape_char, + "[H" /* Cursor Home */ + ); + vty_prompt(vty); + vty_redraw_line(vty); +} + /* When '^Z' is received from vty, move down to the enable mode. */ static void vty_end_config(struct vty *vty) { @@ -1402,6 +1416,9 @@ int vty_read(struct vty *vty) case CONTROL('K'): vty_kill_line(vty); break; + case CONTROL('L'): + vty_clear_screen(vty); + break; case CONTROL('N'): vty_next_line(vty); break; |