1223 lines
24 KiB
C
1223 lines
24 KiB
C
/* vi_mode.c -- A vi emulation mode for Bash.
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Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */
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/* Copyright (C) 1988, 1991 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library (the Library), a set of
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routines for providing Emacs style line input to programs that ask
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for it.
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The Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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The Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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675 Mass Ave, Cambridge, MA 02139, USA. */
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/* **************************************************************** */
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/* */
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/* VI Emulation Mode */
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/* */
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/* **************************************************************** */
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#if defined (VI_MODE)
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#include <stdio.h>
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#if defined (__GNUC__)
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# define alloca __builtin_alloca
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#else
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# if defined (sparc) || defined (HAVE_ALLOCA_H)
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# include <alloca.h>
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# endif
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#endif
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/* Some standard library routines. */
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#include "readline.h"
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#include "history.h"
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#ifndef digit
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#define digit(c) ((c) >= '0' && (c) <= '9')
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#endif
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#ifndef isletter
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#define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
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#endif
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#ifndef digit_value
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#define digit_value(c) ((c) - '0')
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#endif
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#ifndef member
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#define member(c, s) ((c) ? index ((s), (c)) : 0)
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#endif
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#ifndef isident
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#define isident(c) ((isletter(c) || digit(c) || c == '_'))
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#endif
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#ifndef exchange
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#define exchange(x, y) {int temp = x; x = y; y = temp;}
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#endif
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/* Variables imported from readline.c */
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extern int rl_point, rl_end, rl_mark, rl_done;
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extern FILE *rl_instream;
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extern int rl_line_buffer_len, rl_explicit_arg, rl_numeric_arg;
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extern Keymap keymap;
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extern char *rl_prompt;
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extern char *rl_line_buffer;
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extern int rl_arg_sign;
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extern char *xmalloc (), *xrealloc ();
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extern void rl_extend_line_buffer ();
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/* Last string searched for from `/' or `?'. */
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static char *vi_last_search = (char *)NULL;
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static int vi_histpos;
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/* Non-zero means enter insertion mode. */
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int vi_doing_insert = 0;
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/* String inserted into the line by rl_vi_comment (). */
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char *rl_vi_comment_begin = (char *)NULL;
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/* *** UNCLEAN *** */
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/* Command keys which do movement for xxx_to commands. */
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static char *vi_motion = " hl^$0ftFt;,%wbeWBE|";
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/* Keymap used for vi replace characters. Created dynamically since
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rarely used. */
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static Keymap vi_replace_map = (Keymap)NULL;
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/* The number of characters inserted in the last replace operation. */
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static int vi_replace_count = 0;
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/* Yank the nth arg from the previous line into this line at point. */
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rl_vi_yank_arg (count)
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int count;
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{
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/* Readline thinks that the first word on a line is the 0th, while vi
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thinks the first word on a line is the 1st. Compensate. */
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if (rl_explicit_arg)
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rl_yank_nth_arg (count - 1, 0);
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else
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rl_yank_nth_arg ('$', 0);
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}
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/* With an argument, move back that many history lines, else move to the
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beginning of history. */
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rl_vi_fetch_history (count, c)
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int count, c;
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{
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extern int rl_explicit_arg;
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int current = where_history ();
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/* Giving an argument of n means we want the nth command in the history
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file. The command number is interpreted the same way that the bash
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`history' command does it -- that is, giving an argument count of 450
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to this command would get the command listed as number 450 in the
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output of `history'. */
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if (rl_explicit_arg)
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{
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int wanted = history_base + current - count;
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if (wanted <= 0)
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rl_beginning_of_history (0, 0);
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else
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rl_get_previous_history (wanted);
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}
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else
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rl_beginning_of_history (count, 0);
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}
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/* Search again for the last thing searched for. */
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rl_vi_search_again (ignore, key)
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int ignore, key;
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{
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switch (key)
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{
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case 'n':
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rl_vi_dosearch (vi_last_search, -1);
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break;
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case 'N':
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rl_vi_dosearch (vi_last_search, 1);
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break;
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}
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}
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/* Do a vi style search. */
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rl_vi_search (count, key)
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int count, key;
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{
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int dir, c, save_pos;
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char *p;
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switch (key)
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{
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case '?':
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dir = 1;
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break;
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case '/':
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dir = -1;
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break;
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default:
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ding ();
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return;
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}
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vi_histpos = where_history ();
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maybe_save_line ();
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save_pos = rl_point;
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/* Reuse the line input buffer to read the search string. */
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rl_line_buffer[0] = 0;
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rl_end = rl_point = 0;
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p = (char *)alloca (2 + (rl_prompt ? strlen (rl_prompt) : 0));
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sprintf (p, "%s%c", rl_prompt ? rl_prompt : "", key);
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rl_message (p, 0, 0);
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while (c = rl_read_key ())
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{
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switch (c)
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{
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case CTRL('H'):
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case RUBOUT:
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if (rl_point == 0)
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{
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maybe_unsave_line ();
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rl_clear_message ();
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rl_point = save_pos;
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return;
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}
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case CTRL('W'):
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case CTRL('U'):
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rl_dispatch (c, keymap);
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break;
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case ESC:
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case RETURN:
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case NEWLINE:
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goto dosearch;
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break;
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case CTRL('C'):
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maybe_unsave_line ();
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rl_clear_message ();
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rl_point = 0;
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ding ();
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return;
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default:
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rl_insert (1, c);
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break;
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}
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rl_redisplay ();
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}
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dosearch:
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if (vi_last_search)
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free (vi_last_search);
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vi_last_search = savestring (rl_line_buffer);
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rl_vi_dosearch (rl_line_buffer, dir);
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}
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/* Search for STRING in the history list. DIR is < 0 for searching
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backwards. POS is an absolute index into the history list at
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which point to begin searching. If the first character of STRING
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is `^', the string must match a prefix of a history line, otherwise
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a full substring match is performed. */
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static int
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vi_history_search_pos (string, dir, pos)
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char *string;
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int dir, pos;
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{
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int ret, old = where_history ();
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history_set_pos (pos);
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if (*string == '^')
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ret = history_search_prefix (string + 1, dir);
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else
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ret = history_search (string, dir);
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if (ret == -1)
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{
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history_set_pos (old);
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return (-1);
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}
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ret = where_history ();
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history_set_pos (old);
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return ret;
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}
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rl_vi_dosearch (string, dir)
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char *string;
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int dir;
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{
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int old, save = vi_histpos;
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HIST_ENTRY *h;
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if (string == 0 || *string == 0 || vi_histpos < 0)
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{
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ding ();
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return;
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}
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if ((save = vi_history_search_pos (string, dir, vi_histpos + dir)) == -1)
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{
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maybe_unsave_line ();
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rl_clear_message ();
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rl_point = 0;
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ding ();
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return;
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}
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vi_histpos = save;
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old = where_history ();
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history_set_pos (vi_histpos);
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h = current_history ();
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history_set_pos (old);
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{
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int line_len = strlen (h->line);
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if (line_len >= rl_line_buffer_len)
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rl_extend_line_buffer (line_len);
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strcpy (rl_line_buffer, h->line);
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}
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rl_undo_list = (UNDO_LIST *)h->data;
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rl_end = strlen (rl_line_buffer);
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rl_point = 0;
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rl_clear_message ();
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}
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/* Completion, from vi's point of view. */
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rl_vi_complete (ignore, key)
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int ignore, key;
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{
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if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
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{
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if (!whitespace (rl_line_buffer[rl_point + 1]))
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rl_vi_end_word (1, 'E');
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rl_point++;
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}
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if (key == '*')
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rl_complete_internal ('*'); /* Expansion and replacement. */
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else if (key == '=')
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rl_complete_internal ('?'); /* List possible completions. */
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else if (key == '\\')
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rl_complete_internal (TAB); /* Standard Readline completion. */
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else
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rl_complete (0, key);
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}
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/* Previous word in vi mode. */
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rl_vi_prev_word (count, key)
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int count, key;
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{
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if (count < 0)
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{
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rl_vi_next_word (-count, key);
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return;
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}
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if (rl_point == 0)
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{
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ding ();
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return;
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}
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if (uppercase_p (key))
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rl_vi_bWord (count);
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else
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rl_vi_bword (count);
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}
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/* Next word in vi mode. */
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rl_vi_next_word (count, key)
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int count;
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{
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if (count < 0)
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{
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rl_vi_prev_word (-count, key);
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return;
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}
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if (rl_point >= (rl_end - 1))
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{
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ding ();
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||
return;
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||
}
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if (uppercase_p (key))
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rl_vi_fWord (count);
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else
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rl_vi_fword (count);
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||
}
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/* Move to the end of the ?next? word. */
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rl_vi_end_word (count, key)
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int count, key;
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{
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if (count < 0)
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{
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ding ();
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return;
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}
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if (uppercase_p (key))
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rl_vi_eWord (count);
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||
else
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rl_vi_eword (count);
|
||
}
|
||
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/* Move forward a word the way that 'W' does. */
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||
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)
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rl_point++;
|
||
|
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/* Now skip whitespace. */
|
||
while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
|
||
rl_point++;
|
||
}
|
||
}
|
||
|
||
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--;
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||
|
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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++;
|
||
}
|
||
}
|
||
}
|
||
|
||
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--;
|
||
}
|
||
}
|
||
}
|
||
|
||
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++;
|
||
}
|
||
}
|
||
|
||
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++;
|
||
}
|
||
}
|
||
}
|
||
|
||
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--;
|
||
}
|
||
}
|
||
|
||
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;
|
||
{
|
||
rl_newline (1, '\n');
|
||
}
|
||
|
||
/* Insertion mode stuff. */
|
||
|
||
/* Switching from one mode to the other really just involves
|
||
switching keymaps. */
|
||
rl_vi_insertion_mode ()
|
||
{
|
||
keymap = vi_insertion_keymap;
|
||
}
|
||
|
||
rl_vi_movement_mode ()
|
||
{
|
||
if (rl_point > 0)
|
||
rl_backward (1);
|
||
|
||
keymap = vi_movement_keymap;
|
||
vi_done_inserting ();
|
||
}
|
||
|
||
vi_done_inserting ()
|
||
{
|
||
if (vi_doing_insert)
|
||
{
|
||
rl_end_undo_group ();
|
||
vi_doing_insert = 0;
|
||
}
|
||
}
|
||
|
||
rl_vi_arg_digit (count, c)
|
||
int count, c;
|
||
{
|
||
if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg)
|
||
rl_beg_of_line ();
|
||
else
|
||
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;
|
||
|
||
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]);
|
||
|
||
/* 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);
|
||
}
|
||
}
|
||
|
||
rl_vi_put (count, key)
|
||
int count, key;
|
||
{
|
||
if (!uppercase_p (key) && (rl_point + 1 <= rl_end))
|
||
rl_point++;
|
||
|
||
rl_yank ();
|
||
rl_backward (1);
|
||
}
|
||
|
||
rl_vi_check ()
|
||
{
|
||
if (rl_point && rl_point == rl_end)
|
||
rl_point--;
|
||
}
|
||
|
||
rl_vi_column (count)
|
||
{
|
||
if (count > rl_end)
|
||
rl_end_of_line ();
|
||
else
|
||
rl_point = count - 1;
|
||
}
|
||
|
||
int
|
||
rl_vi_domove (key, nextkey)
|
||
int key, *nextkey;
|
||
{
|
||
int c, save;
|
||
int old_end, added_blank;
|
||
|
||
added_blank = 0;
|
||
|
||
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 ();
|
||
return (0);
|
||
}
|
||
else
|
||
return (-1);
|
||
}
|
||
|
||
/* 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++] = ' '; /* This looks pretty bogus to me??? */
|
||
rl_line_buffer[rl_end] = '\0';
|
||
added_blank++;
|
||
|
||
rl_dispatch (c, 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 - 1;
|
||
|
||
/* 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. Do the same
|
||
thing for dw or dW. */
|
||
if (key == 'c' && (to_upper (c) == 'W'))
|
||
{
|
||
while (rl_point && 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 (keymap[c].type == ISFUNC &&
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
|
||
rl_vi_delete_to (count, key)
|
||
int count, key;
|
||
{
|
||
int c;
|
||
|
||
if (uppercase_p (key))
|
||
rl_stuff_char ('$');
|
||
|
||
if (rl_vi_domove (key, &c))
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
if ((c != 'l') && (c != '|') && (c != 'h') && rl_mark < rl_end)
|
||
rl_mark++;
|
||
|
||
rl_kill_text (rl_point, rl_mark);
|
||
}
|
||
|
||
rl_vi_change_to (count, key)
|
||
int count, key;
|
||
{
|
||
int c;
|
||
|
||
if (uppercase_p (key))
|
||
rl_stuff_char ('$');
|
||
|
||
if (rl_vi_domove (key, &c))
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
if ((c != 'l') && (c != '|') && (c != 'h') && rl_mark < rl_end)
|
||
rl_mark++;
|
||
|
||
rl_begin_undo_group ();
|
||
vi_doing_insert = 1;
|
||
rl_kill_text (rl_point, rl_mark);
|
||
rl_vi_insertion_mode ();
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
if ((c != 'l') && (c != '|') && (c != 'h') && 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;
|
||
}
|
||
|
||
rl_vi_delete (count)
|
||
{
|
||
int end;
|
||
|
||
if (rl_end == 0)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
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);
|
||
}
|
||
|
||
/* 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 (": "); /* Default. */
|
||
|
||
rl_redisplay ();
|
||
rl_newline (1, '\010');
|
||
}
|
||
|
||
rl_vi_first_print ()
|
||
{
|
||
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++;
|
||
}
|
||
|
||
/* 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
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
else
|
||
{ /* dir > 0 */
|
||
if (pos >= rl_end)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
}
|
||
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
rl_point = pos;
|
||
}
|
||
|
||
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;
|
||
|
||
c = rl_getc (rl_instream);
|
||
|
||
if (c == '\033' || c == CTRL ('C'))
|
||
return;
|
||
|
||
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 ();
|
||
}
|
||
}
|
||
|
||
rl_vi_subst (count, key)
|
||
int count, key;
|
||
{
|
||
rl_begin_undo_group ();
|
||
vi_doing_insert = 1;
|
||
|
||
if (uppercase_p (key))
|
||
{
|
||
rl_beg_of_line ();
|
||
rl_kill_line (1);
|
||
}
|
||
else
|
||
rl_delete (count, key);
|
||
|
||
rl_vi_insertion_mode ();
|
||
}
|
||
|
||
rl_vi_overstrike (count, key)
|
||
int count, key;
|
||
{
|
||
int i;
|
||
|
||
if (vi_doing_insert == 0)
|
||
{
|
||
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 ();
|
||
}
|
||
}
|
||
|
||
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 && vi_doing_insert)
|
||
{
|
||
rl_end_undo_group ();
|
||
rl_do_undo ();
|
||
vi_doing_insert = 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;
|
||
|
||
}
|
||
keymap = vi_replace_map;
|
||
}
|
||
|
||
/*
|
||
* 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 (!index (" ;", rl_line_buffer[rl_point]))
|
||
{
|
||
while (!index(" ;", 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 */
|