vi_mode.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:29k
- /* 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. */
- #define READLINE_LIBRARY
- /* **************************************************************** */
- /* */
- /* VI Emulation Mode */
- /* */
- /* **************************************************************** */
- #include "rlconf.h"
- #if defined (VI_MODE)
- #if defined (HAVE_CONFIG_H)
- # include <config.h>
- #endif
- #include <sys/types.h>
- #if defined (HAVE_STDLIB_H)
- # include <stdlib.h>
- #else
- # include "ansi_stdlib.h"
- #endif /* HAVE_STDLIB_H */
- #if defined (HAVE_UNISTD_H)
- # include <unistd.h>
- #endif
- #include <stdio.h>
- /* Some standard library routines. */
- #include "rldefs.h"
- #include "readline.h"
- #include "history.h"
- #ifndef _rl_digit_p
- #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
- #endif
- #ifndef _rl_digit_value
- #define _rl_digit_value(c) ((c) - '0')
- #endif
- #ifndef member
- #define member(c, s) ((c) ? (char *)strchr ((s), (c)) != (char *)NULL : 0)
- #endif
- #ifndef isident
- #define isident(c) ((_rl_pure_alphabetic (c) || _rl_digit_p (c) || c == '_'))
- #endif
- #ifndef exchange
- #define exchange(x, y) do {int temp = x; x = y; y = temp;} while (0)
- #endif
- extern char *xmalloc (), *xrealloc ();
- /* Variables imported from readline.c */
- extern int rl_point, rl_end, rl_mark;
- 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 int _rl_doing_an_undo;
- extern int _rl_undo_group_level;
- extern void _rl_dispatch ();
- extern int _rl_char_search_internal ();
- extern void rl_extend_line_buffer ();
- extern int rl_vi_check ();
- /* Non-zero means enter insertion mode. */
- static int _rl_vi_doing_insert;
- /* 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;
- /* The number of characters inserted in the last replace operation. */
- static int vi_replace_count;
- /* If non-zero, we have text inserted after a c[motion] command that put
- us implicitly into insert mode. Some people want this text to be
- attached to the command so that it is `redoable' with `.'. */
- static int vi_continued_command;
- static char *vi_insert_buffer;
- static int vi_insert_buffer_size;
- static int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
- static int _rl_vi_last_repeat = 1;
- static int _rl_vi_last_arg_sign = 1;
- static int _rl_vi_last_motion;
- static int _rl_vi_last_search_char;
- static int _rl_vi_last_replacement;
- static int _rl_vi_last_key_before_insert;
- static int vi_redoing;
- /* Text modification commands. These are the `redoable' commands. */
- static char *vi_textmod = "_*\AaIiCcDdPpYyRrSsXx~";
- /* Arrays for the saved marks. */
- static int vi_mark_chars[27];
- static int rl_digit_loop1 ();
- void
- _rl_vi_initialize_line ()
- {
- register int i;
- for (i = 0; i < sizeof (vi_mark_chars) / sizeof (int); i++)
- vi_mark_chars[i] = -1;
- }
- void
- _rl_vi_reset_last ()
- {
- _rl_vi_last_command = 'i';
- _rl_vi_last_repeat = 1;
- _rl_vi_last_arg_sign = 1;
- _rl_vi_last_motion = 0;
- }
- void
- _rl_vi_set_last (key, repeat, sign)
- int key, repeat, sign;
- {
- _rl_vi_last_command = key;
- _rl_vi_last_repeat = repeat;
- _rl_vi_last_arg_sign = sign;
- }
- /* Is the command C a VI mode text modification command? */
- int
- _rl_vi_textmod_command (c)
- int c;
- {
- return (member (c, vi_textmod));
- }
- static void
- _rl_vi_stuff_insert (count)
- int count;
- {
- rl_begin_undo_group ();
- while (count--)
- rl_insert_text (vi_insert_buffer);
- rl_end_undo_group ();
- }
- /* 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. */
- int
- 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;
- /* If we're redoing an insert with `i', stuff in the inserted text
- and do not go into insertion mode. */
- if (_rl_vi_last_command == 'i' && vi_insert_buffer && *vi_insert_buffer)
- {
- _rl_vi_stuff_insert (count);
- /* And back up point over the last character inserted. */
- if (rl_point > 0)
- rl_point--;
- }
- else
- _rl_dispatch (_rl_vi_last_command, _rl_keymap);
- vi_redoing = 0;
- return (0);
- }
- /* A placeholder for further expansion. */
- int
- rl_vi_undo (count, key)
- int count, key;
- {
- return (rl_undo_command (count, key));
- }
-
- /* Yank the nth arg from the previous line into this line at point. */
- int
- rl_vi_yank_arg (count, key)
- int count, key;
- {
- /* 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);
- return (0);
- }
- /* With an argument, move back that many history lines, else move to the
- beginning of history. */
- int
- rl_vi_fetch_history (count, c)
- int count, c;
- {
- int wanted;
- /* 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)
- {
- wanted = history_base + where_history () - count;
- if (wanted <= 0)
- rl_beginning_of_history (0, 0);
- else
- rl_get_previous_history (wanted, c);
- }
- else
- rl_beginning_of_history (count, 0);
- return (0);
- }
- /* Search again for the last thing searched for. */
- int
- 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. */
- int
- 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. */
- int
- 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_set_last (key, 1, rl_arg_sign);
- rl_vi_insertion_mode (1, key);
- }
- return (0);
- }
- /* Tilde expansion for vi mode. */
- int
- rl_vi_tilde_expand (ignore, key)
- int ignore, key;
- {
- rl_tilde_expand (0, key);
- _rl_vi_set_last (key, 1, rl_arg_sign); /* XXX */
- rl_vi_insertion_mode (1, key);
- return (0);
- }
- /* Previous word in vi mode. */
- int
- 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 (_rl_uppercase_p (key))
- rl_vi_bWord (count, key);
- else
- rl_vi_bword (count, key);
- return (0);
- }
- /* Next word in vi mode. */
- int
- rl_vi_next_word (count, key)
- int count, key;
- {
- if (count < 0)
- return (rl_vi_prev_word (-count, key));
- if (rl_point >= (rl_end - 1))
- {
- ding ();
- return (0);
- }
- if (_rl_uppercase_p (key))
- rl_vi_fWord (count, key);
- else
- rl_vi_fword (count, key);
- return (0);
- }
- /* Move to the end of the ?next? word. */
- int
- rl_vi_end_word (count, key)
- int count, key;
- {
- if (count < 0)
- {
- ding ();
- return -1;
- }
- if (_rl_uppercase_p (key))
- rl_vi_eWord (count, key);
- else
- rl_vi_eword (count, key);
- return (0);
- }
- /* Move forward a word the way that 'W' does. */
- int
- rl_vi_fWord (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_bWord (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_eWord (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_fword (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_bword (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_eword (count, ignore)
- int count, ignore;
- {
- 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);
- }
- int
- rl_vi_insert_beg (count, key)
- int count, key;
- {
- rl_beg_of_line (1, key);
- rl_vi_insertion_mode (1, key);
- return (0);
- }
- int
- rl_vi_append_mode (count, key)
- int count, key;
- {
- if (rl_point < rl_end)
- rl_point++;
- rl_vi_insertion_mode (1, key);
- return (0);
- }
- int
- rl_vi_append_eol (count, key)
- int count, key;
- {
- rl_end_of_line (1, key);
- rl_vi_append_mode (1, key);
- return (0);
- }
- /* What to do in the case of C-d. */
- int
- 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. */
- int
- rl_vi_insertion_mode (count, key)
- int count, key;
- {
- _rl_keymap = vi_insertion_keymap;
- _rl_vi_last_key_before_insert = key;
- return (0);
- }
- static void
- _rl_vi_save_insert (up)
- UNDO_LIST *up;
- {
- int len, start, end;
- if (up == 0)
- {
- if (vi_insert_buffer_size >= 1)
- vi_insert_buffer[0] = ' ';
- return;
- }
- start = up->start;
- end = up->end;
- len = end - start + 1;
- if (len >= vi_insert_buffer_size)
- {
- vi_insert_buffer_size += (len + 32) - (len % 32);
- vi_insert_buffer = xrealloc (vi_insert_buffer, vi_insert_buffer_size);
- }
- strncpy (vi_insert_buffer, rl_line_buffer + start, len - 1);
- vi_insert_buffer[len-1] = ' ';
- }
-
- void
- _rl_vi_done_inserting ()
- {
- if (_rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- /* Now, the text between rl_undo_list->next->start and
- rl_undo_list->next->end is what was inserted while in insert
- mode. It gets copied to VI_INSERT_BUFFER because it depends
- on absolute indices into the line which may change (though they
- probably will not). */
- _rl_vi_doing_insert = 0;
- _rl_vi_save_insert (rl_undo_list->next);
- vi_continued_command = 1;
- }
- else
- {
- if (_rl_vi_last_key_before_insert == 'i' && rl_undo_list)
- _rl_vi_save_insert (rl_undo_list);
- /* XXX - Other keys probably need to be checked. */
- else if (_rl_vi_last_key_before_insert == 'C')
- rl_end_undo_group ();
- while (_rl_undo_group_level > 0)
- rl_end_undo_group ();
- vi_continued_command = 0;
- }
- }
- int
- rl_vi_movement_mode (count, key)
- int count, key;
- {
- if (rl_point > 0)
- rl_backward (1, key);
- _rl_keymap = vi_movement_keymap;
- _rl_vi_done_inserting ();
- return (0);
- }
- int
- rl_vi_arg_digit (count, c)
- int count, c;
- {
- if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg)
- return (rl_beg_of_line (1, c));
- else
- return (rl_digit_argument (count, c));
- }
- int
- 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 (_rl_uppercase_p (rl_line_buffer[rl_point]))
- c = _rl_to_lower (rl_line_buffer[rl_point]);
- else if (_rl_lowercase_p (rl_line_buffer[rl_point]))
- c = _rl_to_upper (rl_line_buffer[rl_point]);
- else
- {
- /* Just skip over characters neither upper nor lower case. */
- rl_forward (1, c);
- 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, c);
- }
- return (0);
- }
- int
- rl_vi_put (count, key)
- int count, key;
- {
- if (!_rl_uppercase_p (key) && (rl_point + 1 <= rl_end))
- rl_point++;
- rl_yank (1, key);
- rl_backward (1, key);
- return (0);
- }
- int
- rl_vi_check ()
- {
- if (rl_point && rl_point == rl_end)
- rl_point--;
- return (0);
- }
- int
- rl_vi_column (count, key)
- int count, key;
- {
- if (count > rl_end)
- rl_end_of_line (1, key);
- 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 (_rl_digit_p (c))
- {
- save = rl_numeric_arg;
- rl_numeric_arg = _rl_digit_value (c);
- rl_digit_loop1 ();
- rl_numeric_arg *= save;
- c = rl_read_key (); /* real command */
- *nextkey = c;
- }
- else if (key == c && (key == 'd' || key == 'y' || key == 'c'))
- {
- rl_mark = rl_end;
- rl_beg_of_line (1, c);
- _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] = ' ';
- _rl_dispatch (c, _rl_keymap);
- /* Remove the blank that we added. */
- rl_end = old_end;
- rl_line_buffer[rl_end] = ' ';
- 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 ((_rl_to_upper (c) == 'W') && rl_point < rl_end && rl_point > rl_mark &&
- !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' && rl_point >= rl_mark && (_rl_to_upper (c) == 'W'))
- {
- /* Don't move farther back than where we started. */
- while (rl_point > rl_mark && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
- /* Posix.2 says that if cw or cW moves the cursor towards the end of
- the line, the character under the cursor should be deleted. */
- if (rl_point == rl_mark)
- rl_point++;
- else
- {
- /* 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? */
- static int
- 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 (_rl_digit_p (c))
- {
- if (rl_explicit_arg)
- rl_numeric_arg = (rl_numeric_arg * 10) + _rl_digit_value (c);
- else
- rl_numeric_arg = _rl_digit_value (c);
- rl_explicit_arg = 1;
- }
- else
- {
- rl_clear_message ();
- rl_stuff_char (key);
- break;
- }
- }
- return (0);
- }
- int
- rl_vi_delete_to (count, key)
- int count, key;
- {
- int c;
- if (_rl_uppercase_p (key))
- rl_stuff_char ('$');
- else if (vi_redoing)
- rl_stuff_char (_rl_vi_last_motion);
- if (rl_vi_domove (key, &c))
- {
- ding ();
- return -1;
- }
- /* These are the motion commands that do not require adjusting the
- mark. */
- if ((strchr (" l|h^0bB", c) == 0) && (rl_mark < rl_end))
- rl_mark++;
- rl_kill_text (rl_point, rl_mark);
- return (0);
- }
- int
- rl_vi_change_to (count, key)
- int count, key;
- {
- int c, start_pos;
- if (_rl_uppercase_p (key))
- rl_stuff_char ('$');
- 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^0bB", c) == 0) && (rl_mark < rl_end))
- rl_mark++;
- /* The cursor never moves with c[wW]. */
- if ((_rl_to_upper (c) == 'W') && rl_point < start_pos)
- rl_point = start_pos;
- if (vi_redoing)
- {
- if (vi_insert_buffer && *vi_insert_buffer)
- rl_begin_undo_group ();
- rl_delete_text (rl_point, rl_mark);
- if (vi_insert_buffer && *vi_insert_buffer)
- {
- rl_insert_text (vi_insert_buffer);
- rl_end_undo_group ();
- }
- }
- else
- {
- rl_begin_undo_group (); /* to make the `u' command work */
- rl_kill_text (rl_point, rl_mark);
- /* `C' does not save the text inserted for undoing or redoing. */
- if (_rl_uppercase_p (key) == 0)
- _rl_vi_doing_insert = 1;
- _rl_vi_set_last (key, count, rl_arg_sign);
- rl_vi_insertion_mode (1, key);
- }
- return (0);
- }
- int
- rl_vi_yank_to (count, key)
- int count, key;
- {
- int c, save = rl_point;
- if (_rl_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);
- }
- int
- rl_vi_delete (count, key)
- int count, key;
- {
- 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, key);
- return (0);
- }
- int
- rl_vi_back_to_indent (count, key)
- int count, key;
- {
- rl_beg_of_line (1, key);
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
- return (0);
- }
- int
- rl_vi_first_print (count, key)
- int count, key;
- {
- return (rl_vi_back_to_indent (1, key));
- }
- int
- rl_vi_char_search (count, key)
- int count, key;
- {
- static char target;
- static int orig_dir, dir;
- 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;
- }
- }
- return (_rl_char_search_internal (count, dir, target));
- }
- /* Match brackets */
- int
- rl_vi_match (ignore, key)
- int ignore, key;
- {
- 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, key);
- 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;
- }
- }
- int
- 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 == ' 33' || 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, c);
- rl_end_undo_group ();
- }
- return (0);
- }
- int
- rl_vi_subst (count, key)
- int count, key;
- {
- rl_begin_undo_group ();
- if (_rl_uppercase_p (key))
- {
- rl_beg_of_line (1, key);
- rl_kill_line (1, key);
- }
- else
- rl_delete_text (rl_point, rl_point+count);
- rl_end_undo_group ();
- _rl_vi_set_last (key, count, rl_arg_sign);
- if (vi_redoing)
- {
- int o = _rl_doing_an_undo;
- _rl_doing_an_undo = 1;
- if (vi_insert_buffer && *vi_insert_buffer)
- rl_insert_text (vi_insert_buffer);
- _rl_doing_an_undo = o;
- }
- else
- {
- rl_begin_undo_group ();
- _rl_vi_doing_insert = 1;
- rl_vi_insertion_mode (1, key);
- }
- return (0);
- }
- int
- 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);
- }
- int
- rl_vi_overstrike_delete (count, key)
- int count, key;
- {
- 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, key);
- }
- if (vi_replace_count == 0 && _rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- rl_do_undo ();
- _rl_vi_doing_insert = 0;
- }
- return (0);
- }
- int
- 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 < KEYMAP_SIZE; 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);
- }
- #if 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 ;. */
- int
- rl_vi_possible_completions()
- {
- int save_pos = rl_point;
- if (rl_line_buffer[rl_point] != ' ' && rl_line_buffer[rl_point] != ';')
- {
- while (rl_point < rl_end && rl_line_buffer[rl_point] != ' ' &&
- rl_line_buffer[rl_point] != ';')
- rl_point++;
- }
- else if (rl_line_buffer[rl_point - 1] == ';')
- {
- ding ();
- return (0);
- }
- rl_possible_completions ();
- rl_point = save_pos;
- return (0);
- }
- #endif
- /* Functions to save and restore marks. */
- int
- rl_vi_set_mark (count, key)
- int count, key;
- {
- int ch;
- ch = rl_read_key ();
- if (_rl_lowercase_p (ch) == 0)
- {
- ding ();
- return -1;
- }
- ch -= 'a';
- vi_mark_chars[ch] = rl_point;
- return 0;
- }
- int
- rl_vi_goto_mark (count, key)
- int count, key;
- {
- int ch;
- ch = rl_read_key ();
- if (ch == '`')
- {
- rl_point = rl_mark;
- return 0;
- }
- else if (_rl_lowercase_p (ch) == 0)
- {
- ding ();
- return -1;
- }
- ch -= 'a';
- if (vi_mark_chars[ch] == -1)
- {
- ding ();
- return -1;
- }
- rl_point = vi_mark_chars[ch];
- return 0;
- }
- #endif /* VI_MODE */