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author | Paul Fertser <fercerpav@gmail.com> | 2013-05-03 17:19:43 +0400 |
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committer | Freddie Chopin <freddie.chopin@gmail.com> | 2013-05-08 14:54:29 +0000 |
commit | 4264431824f1e3c5fdd7e5fb417c4edad5aa3343 (patch) | |
tree | 2b099e80ad0395168507decbf21657d5b2d3aa72 /src/server/telnet_server.c | |
parent | ca332fd532388ffb13c5f190379de8b2698389e7 (diff) | |
download | riscv-openocd-4264431824f1e3c5fdd7e5fb417c4edad5aa3343.zip riscv-openocd-4264431824f1e3c5fdd7e5fb417c4edad5aa3343.tar.gz riscv-openocd-4264431824f1e3c5fdd7e5fb417c4edad5aa3343.tar.bz2 |
telnet_server: support C-p, C-n for moving through history
This modifies telnet server to allow using common readline combinations to
move up/down history, without the need to touch cursor keys.
Change-Id: Ib659075883e91794b44f391f7c29bbdfdd679d10
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1376
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Diffstat (limited to 'src/server/telnet_server.c')
-rw-r--r-- | src/server/telnet_server.c | 62 |
1 files changed, 40 insertions, 22 deletions
diff --git a/src/server/telnet_server.c b/src/server/telnet_server.c index ecdb2bf..090aa86 100644 --- a/src/server/telnet_server.c +++ b/src/server/telnet_server.c @@ -266,6 +266,39 @@ static void telnet_clear_line(struct connection *connection, t_con->line_cursor = 0; } +static void telnet_history_go(struct connection *connection, int idx) +{ + struct telnet_connection *t_con = connection->priv; + + if (t_con->history[idx]) { + telnet_clear_line(connection, t_con); + t_con->line_size = strlen(t_con->history[idx]); + t_con->line_cursor = t_con->line_size; + memcpy(t_con->line, t_con->history[idx], t_con->line_size); + telnet_write(connection, t_con->line, t_con->line_size); + t_con->current_history = idx; + } + t_con->state = TELNET_STATE_DATA; +} + +static void telnet_history_up(struct connection *connection) +{ + struct telnet_connection *t_con = connection->priv; + + int last_history = (t_con->current_history > 0) ? + t_con->current_history - 1 : + TELNET_LINE_HISTORY_SIZE-1; + telnet_history_go(connection, last_history); +} + +static void telnet_history_down(struct connection *connection) +{ + struct telnet_connection *t_con = connection->priv; + + int next_history = (t_con->current_history + 1) % TELNET_LINE_HISTORY_SIZE; + telnet_history_go(connection, next_history); +} + static int telnet_input(struct connection *connection) { int bytes_read; @@ -441,7 +474,11 @@ static int telnet_input(struct connection *connection) if (t_con->line_cursor < t_con->line_size) telnet_write(connection, t_con->line + t_con->line_cursor++, 1); t_con->state = TELNET_STATE_DATA; - } else + } else if (*buf_p == CTRL('P')) /* cursor up */ + telnet_history_up(connection); + else if (*buf_p == CTRL('N')) /* cursor down */ + telnet_history_down(connection); + else LOG_DEBUG("unhandled nonprintable: %2.2x", *buf_p); } } @@ -486,28 +523,9 @@ static int telnet_input(struct connection *connection) t_con->line + t_con->line_cursor++, 1); t_con->state = TELNET_STATE_DATA; } else if (*buf_p == 'A') { /* cursor up */ - int last_history = (t_con->current_history > 0) ? - t_con->current_history - 1 : TELNET_LINE_HISTORY_SIZE-1; - if (t_con->history[last_history]) { - telnet_clear_line(connection, t_con); - t_con->line_size = strlen(t_con->history[last_history]); - t_con->line_cursor = t_con->line_size; - memcpy(t_con->line, t_con->history[last_history], t_con->line_size); - telnet_write(connection, t_con->line, t_con->line_size); - t_con->current_history = last_history; - } - t_con->state = TELNET_STATE_DATA; + telnet_history_up(connection); } else if (*buf_p == 'B') { /* cursor down */ - int next_history = (t_con->current_history + 1) % TELNET_LINE_HISTORY_SIZE; - if (t_con->history[next_history]) { - telnet_clear_line(connection, t_con); - t_con->line_size = strlen(t_con->history[next_history]); - t_con->line_cursor = t_con->line_size; - memcpy(t_con->line, t_con->history[next_history], t_con->line_size); - telnet_write(connection, t_con->line, t_con->line_size); - t_con->current_history = next_history; - } - t_con->state = TELNET_STATE_DATA; + telnet_history_down(connection); } else if (*buf_p == '3') t_con->last_escape = *buf_p; else |