diff options
| author |   Hiroki Shirokura <slank.dev@gmail.com> | 2019-08-16 11:30:34 +0000 |
|---|---|---|
| committer |   Chris Luke <chris_luke@comcast.com> | 2019-09-16 14:52:32 +0000 |
| commit | 67e4df144b8fd9ef45a188937441ce11260c8b67 (patch) | |
| tree | 19750d361be5f0bcf732e88d8e9e3c4fa49b3b8f | |
| parent | 33a58171e5995d9e649b414bfc77f2aab26e4c58 (diff) | |
vlib: cli support ctrl-w to erase left word
Type: fix
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
Change-Id: I3ae7dc3858d0353764d629d6a9eff2bdab5f8768
| -rw-r--r-- | src/vlib/unix/cli.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/vlib/unix/cli.c b/src/vlib/unix/cli.c index 22f56c728c2..640d5bc69c3 100644 --- a/src/vlib/unix/cli.c +++ b/src/vlib/unix/cli.c @@ -293,6 +293,7 @@ typedef enum UNIX_CLI_PARSE_ACTION_WORDRIGHT, /**< Jump cursor to start of right word */ UNIX_CLI_PARSE_ACTION_ERASELINELEFT, /**< Erase line to left of cursor */ UNIX_CLI_PARSE_ACTION_ERASELINERIGHT, /**< Erase line to right & including cursor */ + UNIX_CLI_PARSE_ACTION_ERASEWORDLEFT, /**< Erase word left */ UNIX_CLI_PARSE_ACTION_CLEAR, /**< Clear the terminal */ UNIX_CLI_PARSE_ACTION_REVSEARCH, /**< Search backwards in command history */ UNIX_CLI_PARSE_ACTION_FWDSEARCH, /**< Search forwards in command history */ @@ -359,6 +360,7 @@ static unix_cli_parse_actions_t unix_cli_parse_strings[] = { _(CTL ('D'), UNIX_CLI_PARSE_ACTION_ERASERIGHT), _(CTL ('U'), UNIX_CLI_PARSE_ACTION_ERASELINELEFT), _(CTL ('K'), UNIX_CLI_PARSE_ACTION_ERASELINERIGHT), + _(CTL ('W'), UNIX_CLI_PARSE_ACTION_ERASEWORDLEFT), _(CTL ('Y'), UNIX_CLI_PARSE_ACTION_YANK), _(CTL ('L'), UNIX_CLI_PARSE_ACTION_CLEAR), _(ESC "b", UNIX_CLI_PARSE_ACTION_WORDLEFT), /* Alt-B */ @@ -1616,6 +1618,51 @@ unix_cli_line_process_one (unix_cli_main_t * cm, cf->search_mode = 0; break; + case UNIX_CLI_PARSE_ACTION_ERASEWORDLEFT: + /* calculate num of caracter to be erased */ + delta = 0; + while (cf->cursor > delta + && cf->current_command[cf->cursor - delta - 1] == ' ') + delta++; + while (cf->cursor > delta + && cf->current_command[cf->cursor - delta - 1] != ' ') + delta++; + + if (vec_len (cf->current_command)) + { + if (cf->cursor > 0) + { + /* move cursor left delta times */ + for (j = delta; j > 0; j--, cf->cursor--) + unix_vlib_cli_output_cursor_left (cf, uf); + save = cf->current_command + cf->cursor; + + /* redraw remainder of line */ + memmove (cf->current_command + cf->cursor, + cf->current_command + cf->cursor + delta, + _vec_len (cf->current_command) - cf->cursor - delta); + unix_vlib_cli_output_cooked (cf, uf, + cf->current_command + cf->cursor, + _vec_len (cf->current_command) - + cf->cursor); + cf->cursor += _vec_len (cf->current_command) - cf->cursor; + + /* print delta amount of blank spaces, + * then finally fix the cursor position */ + for (j = delta; j > 0; j--, cf->cursor--) + unix_vlib_cli_output_cursor_left (cf, uf); + for (j = delta; j > 0; j--, cf->cursor++) + unix_vlib_cli_output_cooked (cf, uf, (u8 *) " ", 1); + for (; (cf->current_command + cf->cursor) > save; cf->cursor--) + unix_vlib_cli_output_cursor_left (cf, uf); + _vec_len (cf->current_command) -= delta; + } + } + cf->search_mode = 0; + cf->excursion = 0; + vec_reset_length (cf->search_key); + break; + case UNIX_CLI_PARSE_ACTION_LEFT: if (cf->cursor > 0) { |