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| author | Marc Schink <openocd-dev@marcschink.de> | 2015-10-04 20:21:00 +0200 |
|---|---|---|
| committer | Paul Fertser <fercerpav@gmail.com> | 2018-01-13 09:41:26 +0000 |
| commit | e0010c3e6fe09d9d332b279e661858fc449c0645 (patch) | |
| tree | 29025c15b5d31caa8e6684538961b44a231aa64b /src/server/telnet_server.c | |
| parent | 9cd74c113c3a92dd41485ad4d9ba0a275682712b (diff) | |
| download | riscv-openocd-e0010c3e6fe09d9d332b279e661858fc449c0645.zip riscv-openocd-e0010c3e6fe09d9d332b279e661858fc449c0645.tar.gz riscv-openocd-e0010c3e6fe09d9d332b279e661858fc449c0645.tar.bz2 | |
server/telnet: Handle Ctrl+A and Ctrl+E
Handle the Ctrl+A and Ctrl+E shortcuts which move the cursor to the
beginning and end of the command line, respectively.
Change-Id: I89fa5fd3c5edeb08a3f9320fda766f72ce9d7f64
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/3415
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Diffstat (limited to 'src/server/telnet_server.c')
| -rw-r--r-- | src/server/telnet_server.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/server/telnet_server.c b/src/server/telnet_server.c index 7507afe..06a9c7a 100644 --- a/src/server/telnet_server.c +++ b/src/server/telnet_server.c @@ -303,6 +303,30 @@ static void telnet_history_down(struct connection *connection) telnet_history_go(connection, next_history); } +static void telnet_move_cursor(struct connection *connection, size_t pos) +{ + struct telnet_connection *tc; + size_t tmp; + + tc = connection->priv; + + if (pos < tc->line_cursor) { + tmp = tc->line_cursor - pos; + + for (size_t i = 0; i < tmp; i += 16) + telnet_write(connection, "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b", + MIN(tmp - i, 16)); + } else { + tmp = pos - tc->line_cursor; + + for (size_t i = 0; i < tmp; i += 16) + telnet_write(connection, tc->line + tc->line_cursor + i, + MIN(tmp - i, 16)); + } + + tc->line_cursor = pos; +} + static int telnet_input(struct connection *connection) { int bytes_read; @@ -482,6 +506,10 @@ static int telnet_input(struct connection *connection) telnet_history_up(connection); else if (*buf_p == CTRL('N')) /* cursor down */ telnet_history_down(connection); + else if (*buf_p == CTRL('A')) + telnet_move_cursor(connection, 0); + else if (*buf_p == CTRL('E')) + telnet_move_cursor(connection, t_con->line_size); else LOG_DEBUG("unhandled nonprintable: %2.2x", *buf_p); } |