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- /* vi_mode.c -- A vi emulation mode for Bash.
- Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */
-
- /* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
-
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
-
- The GNU Readline Library is free software; you can redistribute it
- and/or modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 1, or
- (at your option) any later version.
-
- The GNU Readline Library is distributed in the hope that it will be
- useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* **************************************************************** */
- /* */
- /* VI Emulation Mode */
- /* */
- /* **************************************************************** */
- #if defined (VI_MODE)
-
- #include <sys/types.h>
-
- #if defined (STATIC_MALLOC)
- static char *xmalloc (), *xrealloc ();
- #else
- extern char *xmalloc (), *xrealloc ();
- #endif /* STATIC_MALLOC */
-
- #include <stdio.h>
-
- /* Some standard library routines. */
- #include "rldefs.h"
- #include "readline.h"
- #include "history.h"
-
- #ifndef digit
- #define digit(c) ((c) >= '0' && (c) <= '9')
- #endif
-
- #ifndef isletter
- #define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
- #endif
-
- #ifndef digit_value
- #define digit_value(c) ((c) - '0')
- #endif
-
- #ifndef member
- #define member(c, s) ((c) ? (char *)strchr ((s), (c)) : 0)
- #endif
-
- #ifndef isident
- #define isident(c) ((isletter(c) || digit(c) || c == '_'))
- #endif
-
- #ifndef exchange
- #define exchange(x, y) {int temp = x; x = y; y = temp;}
- #endif
-
- #ifndef VI_COMMENT_BEGIN_DEFAULT
- #define VI_COMMENT_BEGIN_DEFAULT "#"
- #endif
-
- /* Variables imported from readline.c */
- extern int rl_point, rl_end, rl_mark, rl_done;
- extern FILE *rl_instream;
- extern int rl_line_buffer_len, rl_explicit_arg, rl_numeric_arg;
- extern Keymap _rl_keymap;
- extern char *rl_prompt;
- extern char *rl_line_buffer;
- extern int rl_arg_sign;
-
- extern void rl_extend_line_buffer ();
- extern int rl_vi_check (), rl_digit_loop1 ();
-
- /* Non-zero means enter insertion mode. */
- int _rl_vi_doing_insert = 0;
-
- /* String inserted into the line by rl_vi_comment (). */
- char *rl_vi_comment_begin = (char *)NULL;
-
- /* *** UNCLEAN *** */
- /* Command keys which do movement for xxx_to commands. */
- static char *vi_motion = " hl^$0ftFt;,%wbeWBE|";
-
- /* Keymap used for vi replace characters. Created dynamically since
- rarely used. */
- static Keymap vi_replace_map = (Keymap)NULL;
-
- /* The number of characters inserted in the last replace operation. */
- static int vi_replace_count = 0;
-
- int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
- int _rl_vi_last_repeat = 1;
- int _rl_vi_last_arg_sign = 1;
- static int _rl_vi_last_motion = 0;
- static int _rl_vi_last_search_char = 0;
- static int _rl_vi_last_replacement = 0;
-
- static int vi_redoing = 0;
-
- /* Text modification commands. These are the `redoable' commands. */
- static char *vi_textmod = "_*\\AaIiCcDdPpYyRrSsXx~";
-
- void
- rl_vi_set_last ()
- {
- _rl_vi_last_command = 'i';
- _rl_vi_last_repeat = 1;
- _rl_vi_last_arg_sign = 1;
- _rl_vi_last_motion = 0;
- }
-
- /* Is the command C a VI mode text modification command? */
- int
- rl_vi_textmod_command (c)
- int c;
- {
- return (member (c, vi_textmod) != (char *)NULL);
- }
-
- /* Bound to `.'. Called from command mode, so we know that we have to
- redo a text modification command. The default for _rl_vi_last_command
- puts you back into insert mode. */
- rl_vi_redo (count, c)
- int count, c;
- {
- if (!rl_explicit_arg)
- {
- rl_numeric_arg = _rl_vi_last_repeat;
- rl_arg_sign = _rl_vi_last_arg_sign;
- }
-
- vi_redoing = 1;
- rl_dispatch (_rl_vi_last_command, _rl_keymap);
- vi_redoing = 0;
-
- return (0);
- }
-
- /* Yank the nth arg from the previous line into this line at point. */
- rl_vi_yank_arg (count)
- int count;
- {
- /* vi mode is defined to insert a space before the last argument. */
- rl_insert (1, ' ');
-
- /* Readline thinks that the first word on a line is the 0th, while vi
- thinks the first word on a line is the 1st. Compensate. */
- if (rl_explicit_arg)
- rl_yank_nth_arg (count - 1, 0);
- else
- rl_yank_nth_arg ('$', 0);
-
- rl_vi_insertion_mode ();
- return (0);
- }
-
- /* With an argument, move back that many history lines, else move to the
- beginning of history. */
- rl_vi_fetch_history (count, c)
- int count, c;
- {
- int current = where_history ();
-
- /* Giving an argument of n means we want the nth command in the history
- file. The command number is interpreted the same way that the bash
- `history' command does it -- that is, giving an argument count of 450
- to this command would get the command listed as number 450 in the
- output of `history'. */
- if (rl_explicit_arg)
- {
- int wanted = history_base + current - count;
- if (wanted <= 0)
- rl_beginning_of_history (0, 0);
- else
- rl_get_previous_history (wanted);
- }
- else
- rl_beginning_of_history (count, 0);
- return (0);
- }
-
- /* Search again for the last thing searched for. */
- rl_vi_search_again (count, key)
- int count, key;
- {
- switch (key)
- {
- case 'n':
- rl_noninc_reverse_search_again (count, key);
- break;
-
- case 'N':
- rl_noninc_forward_search_again (count, key);
- break;
- }
- return (0);
- }
-
- /* Do a vi style search. */
- rl_vi_search (count, key)
- int count, key;
- {
- switch (key)
- {
- case '?':
- rl_noninc_forward_search (count, key);
- break;
-
- case '/':
- rl_noninc_reverse_search (count, key);
- break;
-
- default:
- ding ();
- break;
- }
- return (0);
- }
-
- /* Completion, from vi's point of view. */
- rl_vi_complete (ignore, key)
- int ignore, key;
- {
- if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
- {
- if (!whitespace (rl_line_buffer[rl_point + 1]))
- rl_vi_end_word (1, 'E');
- rl_point++;
- }
-
- if (key == '*')
- rl_complete_internal ('*'); /* Expansion and replacement. */
- else if (key == '=')
- rl_complete_internal ('?'); /* List possible completions. */
- else if (key == '\\')
- rl_complete_internal (TAB); /* Standard Readline completion. */
- else
- rl_complete (0, key);
-
- if (key == '*' || key == '\\')
- rl_vi_insertion_mode ();
- return (0);
- }
-
- /* Tilde expansion for vi mode. */
- rl_vi_tilde_expand (ignore, key)
- int ignore, key;
- {
- rl_tilde_expand (0, key);
- rl_vi_insertion_mode ();
- return (0);
- }
-
- /* Previous word in vi mode. */
- rl_vi_prev_word (count, key)
- int count, key;
- {
- if (count < 0)
- return (rl_vi_next_word (-count, key));
-
- if (rl_point == 0)
- {
- ding ();
- return (0);
- }
-
- if (uppercase_p (key))
- rl_vi_bWord (count);
- else
- rl_vi_bword (count);
-
- return (0);
- }
-
- /* Next word in vi mode. */
- rl_vi_next_word (count, key)
- int count;
- {
- if (count < 0)
- return (rl_vi_prev_word (-count, key));
-
- if (rl_point >= (rl_end - 1))
- {
- ding ();
- return (0);
- }
-
- if (uppercase_p (key))
- rl_vi_fWord (count);
- else
- rl_vi_fword (count);
- return (0);
- }
-
- /* Move to the end of the ?next? word. */
- rl_vi_end_word (count, key)
- int count, key;
- {
- if (count < 0)
- {
- ding ();
- return -1;
- }
-
- if (uppercase_p (key))
- rl_vi_eWord (count);
- else
- rl_vi_eword (count);
- return (0);
- }
-
- /* Move forward a word the way that 'W' does. */
- rl_vi_fWord (count)
- int count;
- {
- while (count-- && rl_point < (rl_end - 1))
- {
- /* Skip until whitespace. */
- while (!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
-
- /* Now skip whitespace. */
- while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- return (0);
- }
-
- rl_vi_bWord (count)
- int count;
- {
- while (count-- && rl_point > 0)
- {
- /* If we are at the start of a word, move back to whitespace so
- we will go back to the start of the previous word. */
- if (!whitespace (rl_line_buffer[rl_point]) &&
- whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- if (rl_point > 0)
- {
- while (--rl_point >= 0 && !whitespace (rl_line_buffer[rl_point]));
- rl_point++;
- }
- }
- return (0);
- }
-
- rl_vi_eWord (count)
- int count;
- {
- while (count-- && rl_point < (rl_end - 1))
- {
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Move to the next non-whitespace character (to the start of the
- next word). */
- while (++rl_point < rl_end && whitespace (rl_line_buffer[rl_point]));
-
- if (rl_point && rl_point < rl_end)
- {
- /* Skip whitespace. */
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Skip until whitespace. */
- while (rl_point < rl_end && !whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Move back to the last character of the word. */
- rl_point--;
- }
- }
- return (0);
- }
-
- rl_vi_fword (count)
- int count;
- {
- while (count-- && rl_point < (rl_end - 1))
- {
- /* Move to white space (really non-identifer). */
- if (isident (rl_line_buffer[rl_point]))
- {
- while (isident (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- else /* if (!whitespace (rl_line_buffer[rl_point])) */
- {
- while (!isident (rl_line_buffer[rl_point]) &&
- !whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
-
- /* Move past whitespace. */
- while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- return (0);
- }
-
- rl_vi_bword (count)
- int count;
- {
- while (count-- && rl_point > 0)
- {
- int last_is_ident;
-
- /* If we are at the start of a word, move back to whitespace
- so we will go back to the start of the previous word. */
- if (!whitespace (rl_line_buffer[rl_point]) &&
- whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- /* If this character and the previous character are `opposite', move
- back so we don't get messed up by the rl_point++ down there in
- the while loop. Without this code, words like `l;' screw up the
- function. */
- last_is_ident = isident (rl_line_buffer[rl_point - 1]);
- if ((isident (rl_line_buffer[rl_point]) && !last_is_ident) ||
- (!isident (rl_line_buffer[rl_point]) && last_is_ident))
- rl_point--;
-
- while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- if (rl_point > 0)
- {
- if (isident (rl_line_buffer[rl_point]))
- while (--rl_point >= 0 && isident (rl_line_buffer[rl_point]));
- else
- while (--rl_point >= 0 && !isident (rl_line_buffer[rl_point]) &&
- !whitespace (rl_line_buffer[rl_point]));
- rl_point++;
- }
- }
- return (0);
- }
-
- rl_vi_eword (count)
- int count;
- {
- while (count-- && rl_point < rl_end - 1)
- {
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- if (rl_point < rl_end)
- {
- if (isident (rl_line_buffer[rl_point]))
- while (++rl_point < rl_end && isident (rl_line_buffer[rl_point]));
- else
- while (++rl_point < rl_end && !isident (rl_line_buffer[rl_point])
- && !whitespace (rl_line_buffer[rl_point]));
- }
- rl_point--;
- }
- return (0);
- }
-
- rl_vi_insert_beg ()
- {
- rl_beg_of_line ();
- rl_vi_insertion_mode ();
- return (0);
- }
-
- rl_vi_append_mode ()
- {
- if (rl_point < rl_end)
- rl_point += 1;
- rl_vi_insertion_mode ();
- return (0);
- }
-
- rl_vi_append_eol ()
- {
- rl_end_of_line ();
- rl_vi_append_mode ();
- return (0);
- }
-
- /* What to do in the case of C-d. */
- rl_vi_eof_maybe (count, c)
- int count, c;
- {
- return (rl_newline (1, '\n'));
- }
-
- /* Insertion mode stuff. */
-
- /* Switching from one mode to the other really just involves
- switching keymaps. */
- rl_vi_insertion_mode ()
- {
- _rl_keymap = vi_insertion_keymap;
- return (0);
- }
-
- rl_vi_movement_mode ()
- {
- if (rl_point > 0)
- rl_backward (1);
-
- rl_vi_set_last ();
-
- _rl_keymap = vi_movement_keymap;
- vi_done_inserting ();
- return (0);
- }
-
- vi_done_inserting ()
- {
- if (_rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- _rl_vi_doing_insert = 0;
- }
- return (0);
- }
-
- rl_vi_arg_digit (count, c)
- int count, c;
- {
- if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg)
- return (rl_beg_of_line ());
- else
- return (rl_digit_argument (count, c));
- }
-
- rl_vi_change_case (count, ignore)
- int count, ignore;
- {
- char c = 0;
-
- /* Don't try this on an empty line. */
- if (rl_point >= rl_end)
- return (0);
-
- while (count-- && rl_point < rl_end)
- {
- if (uppercase_p (rl_line_buffer[rl_point]))
- c = to_lower (rl_line_buffer[rl_point]);
- else if (lowercase_p (rl_line_buffer[rl_point]))
- c = to_upper (rl_line_buffer[rl_point]);
- else
- {
- /* Just skip over characters neither upper nor lower case. */
- rl_forward (1);
- continue;
- }
-
- /* Vi is kind of strange here. */
- if (c)
- {
- rl_begin_undo_group ();
- rl_delete (1, c);
- rl_insert (1, c);
- rl_end_undo_group ();
- rl_vi_check ();
- }
- else
- rl_forward (1);
- }
- return (0);
- }
-
- rl_vi_put (count, key)
- int count, key;
- {
- if (!uppercase_p (key) && (rl_point + 1 <= rl_end))
- rl_point++;
-
- rl_yank ();
- rl_backward (1);
- return (0);
- }
-
- rl_vi_check ()
- {
- if (rl_point && rl_point == rl_end)
- rl_point--;
- return (0);
- }
-
- rl_vi_column (count)
- {
- if (count > rl_end)
- rl_end_of_line ();
- else
- rl_point = count - 1;
- return (0);
- }
-
- int
- rl_vi_domove (key, nextkey)
- int key, *nextkey;
- {
- int c, save;
- int old_end;
-
- rl_mark = rl_point;
- c = rl_read_key ();
- *nextkey = c;
-
- if (!member (c, vi_motion))
- {
- if (digit (c))
- {
- save = rl_numeric_arg;
- rl_numeric_arg = digit_value (c);
- rl_digit_loop1 ();
- rl_numeric_arg *= save;
- c = rl_read_key (); /* real command */
- *nextkey = c;
- }
- else if ((key == 'd' && c == 'd') ||
- (key == 'y' && c == 'y') ||
- (key == 'c' && c == 'c'))
- {
- rl_mark = rl_end;
- rl_beg_of_line ();
- _rl_vi_last_motion = c;
- return (0);
- }
- else
- return (-1);
- }
-
- _rl_vi_last_motion = c;
-
- /* Append a blank character temporarily so that the motion routines
- work right at the end of the line. */
- old_end = rl_end;
- rl_line_buffer[rl_end++] = ' ';
- rl_line_buffer[rl_end] = '\0';
-
- rl_dispatch (c, _rl_keymap);
-
- /* Remove the blank that we added. */
- rl_end = old_end;
- rl_line_buffer[rl_end] = '\0';
- if (rl_point > rl_end)
- rl_point = rl_end;
-
- /* No change in position means the command failed. */
- if (rl_mark == rl_point)
- return (-1);
-
- /* rl_vi_f[wW]ord () leaves the cursor on the first character of the next
- word. If we are not at the end of the line, and we are on a
- non-whitespace character, move back one (presumably to whitespace). */
- if ((c == 'w' || c == 'W') && (rl_point < rl_end) &&
- !whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- /* If cw or cW, back up to the end of a word, so the behaviour of ce
- or cE is the actual result. Brute-force, no subtlety. */
- if (key == 'c' && (to_upper (c) == 'W'))
- {
- while (rl_point && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- /* Move past the end of the word so that the kill doesn't remove the
- last letter of the previous word. Only do this if we are not at
- the end of the line. */
- if ((rl_point >= 0) && (rl_point < (rl_end - 1)) &&
- !whitespace (rl_line_buffer[rl_point]))
- rl_point++;
- }
-
- if (rl_mark < rl_point)
- exchange (rl_point, rl_mark);
-
- return (0);
- }
-
- /* A simplified loop for vi. Don't dispatch key at end.
- Don't recognize minus sign? */
- rl_digit_loop1 ()
- {
- int key, c;
-
- while (1)
- {
- rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg, 0);
- key = c = rl_read_key ();
-
- if (_rl_keymap[c].type == ISFUNC &&
- _rl_keymap[c].function == rl_universal_argument)
- {
- rl_numeric_arg *= 4;
- continue;
- }
-
- c = UNMETA (c);
- if (numeric (c))
- {
- if (rl_explicit_arg)
- rl_numeric_arg = (rl_numeric_arg * 10) + digit_value (c);
- else
- rl_numeric_arg = digit_value (c);
- rl_explicit_arg = 1;
- }
- else
- {
- rl_clear_message ();
- rl_stuff_char (key);
- break;
- }
- }
- return (0);
- }
-
- rl_vi_delete_to (count, key)
- int count, key;
- {
- int c;
-
- if (uppercase_p (key))
- rl_stuff_char ('$');
- else if (vi_redoing)
- rl_stuff_char (_rl_vi_last_motion);
-
- if (rl_vi_domove (key, &c))
- {
- ding ();
- return -1;
- }
-
- /* These are the motion commands that do not require adjusting the
- mark. */
- if ((strchr (" l|h^0%bB", c) == 0) && (rl_mark < rl_end))
- rl_mark++;
-
- rl_kill_text (rl_point, rl_mark);
- return (0);
- }
-
- rl_vi_change_to (count, key)
- int count, key;
- {
- int c, start_pos;
-
- if (uppercase_p (key))
- rl_stuff_char ('$');
- else if (vi_redoing)
- rl_stuff_char (_rl_vi_last_motion);
-
- start_pos = rl_point;
-
- if (rl_vi_domove (key, &c))
- {
- ding ();
- return -1;
- }
-
- /* These are the motion commands that do not require adjusting the
- mark. c[wW] are handled by special-case code in rl_vi_domove(),
- and already leave the mark at the correct location. */
- if ((strchr (" l|hwW^0%bB", c) == 0) && (rl_mark < rl_end))
- rl_mark++;
-
- /* The cursor never moves with c[wW]. */
- if ((to_upper (c) == 'W') && rl_point < start_pos)
- rl_point = start_pos;
-
- rl_begin_undo_group ();
- _rl_vi_doing_insert = 1;
- rl_kill_text (rl_point, rl_mark);
- rl_vi_insertion_mode ();
-
- return (0);
- }
-
- rl_vi_yank_to (count, key)
- int count, key;
- {
- int c, save = rl_point;
-
- if (uppercase_p (key))
- rl_stuff_char ('$');
-
- if (rl_vi_domove (key, &c))
- {
- ding ();
- return -1;
- }
-
- /* These are the motion commands that do not require adjusting the
- mark. */
- if ((strchr (" l|h^0%bB", c) == 0) && (rl_mark < rl_end))
- rl_mark++;
-
- rl_begin_undo_group ();
- rl_kill_text (rl_point, rl_mark);
- rl_end_undo_group ();
- rl_do_undo ();
- rl_point = save;
-
- return (0);
- }
-
- rl_vi_delete (count)
- int count;
- {
- int end;
-
- if (rl_end == 0)
- {
- ding ();
- return -1;
- }
-
- end = rl_point + count;
-
- if (end >= rl_end)
- end = rl_end;
-
- rl_kill_text (rl_point, end);
-
- if (rl_point > 0 && rl_point == rl_end)
- rl_backward (1);
- return (0);
- }
-
- /* Turn the current line into a comment in shell history.
- A K*rn shell style function. */
- rl_vi_comment ()
- {
- rl_beg_of_line ();
-
- if (rl_vi_comment_begin != (char *)NULL)
- rl_insert_text (rl_vi_comment_begin);
- else
- rl_insert_text (VI_COMMENT_BEGIN_DEFAULT); /* Default. */
-
- rl_redisplay ();
- rl_newline (1, '\010');
- return (0);
- }
-
- rl_vi_first_print ()
- {
- return (rl_back_to_indent ());
- }
-
- rl_back_to_indent (ignore1, ignore2)
- int ignore1, ignore2;
- {
- rl_beg_of_line ();
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
- return (0);
- }
-
- /* NOTE: it is necessary that opposite directions are inverses */
- #define FTO 1 /* forward to */
- #define BTO -1 /* backward to */
- #define FFIND 2 /* forward find */
- #define BFIND -2 /* backward find */
-
- rl_vi_char_search (count, key)
- int count, key;
- {
- static char target;
- static int orig_dir, dir;
- int pos;
-
- if (key == ';' || key == ',')
- dir = (key == ';' ? orig_dir : -orig_dir);
- else
- {
- if (vi_redoing)
- target = _rl_vi_last_search_char;
- else
- _rl_vi_last_search_char = target = rl_getc (rl_instream);
-
- switch (key)
- {
- case 't':
- orig_dir = dir = FTO;
- break;
-
- case 'T':
- orig_dir = dir = BTO;
- break;
-
- case 'f':
- orig_dir = dir = FFIND;
- break;
-
- case 'F':
- orig_dir = dir = BFIND;
- break;
- }
- }
-
- pos = rl_point;
-
- while (count--)
- {
- if (dir < 0)
- {
- if (pos == 0)
- {
- ding ();
- return;
- }
-
- pos--;
- do
- {
- if (rl_line_buffer[pos] == target)
- {
- if (dir == BTO)
- rl_point = pos + 1;
- else
- rl_point = pos;
- break;
- }
- }
- while (pos--);
-
- if (pos < 0)
- {
- ding ();
- return -1;
- }
- }
- else
- { /* dir > 0 */
- if (pos >= rl_end)
- {
- ding ();
- return -1;
- }
-
- pos++;
- do
- {
- if (rl_line_buffer[pos] == target)
- {
- if (dir == FTO)
- rl_point = pos - 1;
- else
- rl_point = pos;
- break;
- }
- }
- while (++pos < rl_end);
-
- if (pos >= (rl_end - 1))
- {
- ding ();
- return -1;
- }
- }
- }
- return (0);
- }
-
- /* Match brackets */
- rl_vi_match ()
- {
- int count = 1, brack, pos;
-
- pos = rl_point;
- if ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
- {
- while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0 &&
- rl_point < rl_end - 1)
- rl_forward (1);
-
- if (brack <= 0)
- {
- rl_point = pos;
- ding ();
- return -1;
- }
- }
-
- pos = rl_point;
-
- if (brack < 0)
- {
- while (count)
- {
- if (--pos >= 0)
- {
- int b = rl_vi_bracktype (rl_line_buffer[pos]);
- if (b == -brack)
- count--;
- else if (b == brack)
- count++;
- }
- else
- {
- ding ();
- return -1;
- }
- }
- }
- else
- { /* brack > 0 */
- while (count)
- {
- if (++pos < rl_end)
- {
- int b = rl_vi_bracktype (rl_line_buffer[pos]);
- if (b == -brack)
- count--;
- else if (b == brack)
- count++;
- }
- else
- {
- ding ();
- return -1;
- }
- }
- }
- rl_point = pos;
- return (0);
- }
-
- int
- rl_vi_bracktype (c)
- int c;
- {
- switch (c)
- {
- case '(': return 1;
- case ')': return -1;
- case '[': return 2;
- case ']': return -2;
- case '{': return 3;
- case '}': return -3;
- default: return 0;
- }
- }
-
- rl_vi_change_char (count, key)
- int count, key;
- {
- int c;
-
- if (vi_redoing)
- c = _rl_vi_last_replacement;
- else
- _rl_vi_last_replacement = c = rl_getc (rl_instream);
-
- if (c == '\033' || c == CTRL ('C'))
- return -1;
-
- while (count-- && rl_point < rl_end)
- {
- rl_begin_undo_group ();
-
- rl_delete (1, c);
- rl_insert (1, c);
- if (count == 0)
- rl_backward (1);
-
- rl_end_undo_group ();
- }
- return (0);
- }
-
- rl_vi_subst (count, key)
- int count, key;
- {
- rl_begin_undo_group ();
- _rl_vi_doing_insert = 1;
-
- if (uppercase_p (key))
- {
- rl_beg_of_line ();
- rl_kill_line (1);
- }
- else
- rl_delete (count, key);
-
- rl_end_undo_group ();
-
- rl_vi_insertion_mode ();
- return (0);
- }
-
- rl_vi_overstrike (count, key)
- int count, key;
- {
- int i;
-
- if (_rl_vi_doing_insert == 0)
- {
- _rl_vi_doing_insert = 1;
- rl_begin_undo_group ();
- }
-
- for (i = 0; i < count; i++)
- {
- vi_replace_count++;
- rl_begin_undo_group ();
-
- if (rl_point < rl_end)
- {
- rl_delete (1, key);
- rl_insert (1, key);
- }
- else
- rl_insert (1, key);
-
- rl_end_undo_group ();
- }
- return (0);
- }
-
- rl_vi_overstrike_delete (count)
- int count;
- {
- int i, s;
-
- for (i = 0; i < count; i++)
- {
- if (vi_replace_count == 0)
- {
- ding ();
- break;
- }
- s = rl_point;
-
- if (rl_do_undo ())
- vi_replace_count--;
-
- if (rl_point == s)
- rl_backward (1);
- }
-
- if (vi_replace_count == 0 && _rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- rl_do_undo ();
- _rl_vi_doing_insert = 0;
- }
- return (0);
- }
-
- rl_vi_replace (count, key)
- int count, key;
- {
- int i;
-
- vi_replace_count = 0;
-
- if (!vi_replace_map)
- {
- vi_replace_map = rl_make_bare_keymap ();
-
- for (i = ' '; i < 127; i++)
- vi_replace_map[i].function = rl_vi_overstrike;
-
- vi_replace_map[RUBOUT].function = rl_vi_overstrike_delete;
- vi_replace_map[ESC].function = rl_vi_movement_mode;
- vi_replace_map[RETURN].function = rl_newline;
- vi_replace_map[NEWLINE].function = rl_newline;
-
- /* If the normal vi insertion keymap has ^H bound to erase, do the
- same here. Probably should remove the assignment to RUBOUT up
- there, but I don't think it will make a difference in real life. */
- if (vi_insertion_keymap[CTRL ('H')].type == ISFUNC &&
- vi_insertion_keymap[CTRL ('H')].function == rl_rubout)
- vi_replace_map[CTRL ('H')].function = rl_vi_overstrike_delete;
-
- }
- _rl_keymap = vi_replace_map;
- return (0);
- }
-
- /* Try to complete the word we are standing on or the word that ends with
- the previous character. A space matches everything. Word delimiters are
- space and ;. */
- rl_vi_possible_completions()
- {
- int save_pos = rl_point;
-
- if (rl_line_buffer[rl_point] != ' ' && rl_line_buffer[rl_point] != ';')
- {
- while (rl_line_buffer[rl_point] != ' ' &&
- rl_line_buffer[rl_point] != ';')
- ;
- }
- else if (rl_line_buffer[rl_point - 1] == ';')
- {
- ding ();
- return (0);
- }
-
- rl_possible_completions ();
- rl_point = save_pos;
-
- return (0);
- }
-
- #endif /* VI_MODE */
-