1320 lines
27 KiB
C
1320 lines
27 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) 1987, 1989, 1992 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library, a library for
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reading lines of text with interactive input and history editing.
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The GNU Readline Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 1, or
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(at your option) any later version.
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The GNU Readline Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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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#include "rlconf.h"
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#if defined (VI_MODE)
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#include <sys/types.h>
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#if defined (HAVE_STDLIB_H)
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# include <stdlib.h>
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#else
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# include "ansi_stdlib.h"
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#endif /* HAVE_STDLIB_H */
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#include <stdio.h>
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/* Some standard library routines. */
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#include "rldefs.h"
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#include <readline/readline.h>
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#include <readline/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) ? (char *)strchr ((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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#ifndef VI_COMMENT_BEGIN_DEFAULT
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#define VI_COMMENT_BEGIN_DEFAULT "#"
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#endif
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#if defined (STATIC_MALLOC)
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static char *xmalloc (), *xrealloc ();
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#else
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extern char *xmalloc (), *xrealloc ();
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#endif /* STATIC_MALLOC */
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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 _rl_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 void _rl_dispatch ();
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extern void rl_extend_line_buffer ();
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extern int rl_vi_check ();
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/* Non-zero means enter insertion mode. */
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static int _rl_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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/* If non-zero, we have text inserted after a c[motion] command that put
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us implicitly into insert mode. Some people want this text to be
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attached to the command so that it is `redoable' with `.'. */
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static int vi_continued_command = 0;
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static int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
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static int _rl_vi_last_repeat = 1;
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static int _rl_vi_last_arg_sign = 1;
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static int _rl_vi_last_motion = 0;
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static int _rl_vi_last_search_char = 0;
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static int _rl_vi_last_replacement = 0;
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static int vi_redoing = 0;
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/* Text modification commands. These are the `redoable' commands. */
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static char *vi_textmod = "_*\\AaIiCcDdPpYyRrSsXx~";
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static int rl_digit_loop1 ();
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void
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_rl_vi_reset_last ()
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{
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_rl_vi_last_command = 'i';
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_rl_vi_last_repeat = 1;
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_rl_vi_last_arg_sign = 1;
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_rl_vi_last_motion = 0;
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}
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void
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_rl_vi_set_last (key, repeat, sign)
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int key, repeat, sign;
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{
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_rl_vi_last_command = key;
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_rl_vi_last_repeat = repeat;
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_rl_vi_last_arg_sign = sign;
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}
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/* Is the command C a VI mode text modification command? */
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int
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rl_vi_textmod_command (c)
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int c;
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{
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return (member (c, vi_textmod) != (char *)NULL);
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}
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/* Bound to `.'. Called from command mode, so we know that we have to
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redo a text modification command. The default for _rl_vi_last_command
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puts you back into insert mode. */
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rl_vi_redo (count, c)
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int count, c;
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{
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if (!rl_explicit_arg)
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{
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rl_numeric_arg = _rl_vi_last_repeat;
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rl_arg_sign = _rl_vi_last_arg_sign;
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}
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vi_redoing = 1;
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_rl_dispatch (_rl_vi_last_command, _rl_keymap);
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vi_redoing = 0;
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return (0);
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}
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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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return (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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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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return (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 (count, key)
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int count, 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_noninc_reverse_search_again (count, key);
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break;
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case 'N':
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rl_noninc_forward_search_again (count, key);
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break;
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}
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return (0);
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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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switch (key)
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{
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case '?':
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rl_noninc_forward_search (count, key);
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break;
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case '/':
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rl_noninc_reverse_search (count, key);
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break;
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default:
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ding ();
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break;
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}
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return (0);
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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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if (key == '*' || key == '\\')
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{
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_rl_vi_set_last (key, 1, rl_arg_sign);
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rl_vi_insertion_mode ();
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}
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return (0);
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}
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/* Tilde expansion for vi mode. */
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rl_vi_tilde_expand (ignore, key)
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int ignore, key;
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{
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rl_tilde_expand (0, key);
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_rl_vi_set_last (key, 1, rl_arg_sign); /* XXX */
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rl_vi_insertion_mode ();
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return (0);
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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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return (rl_vi_next_word (-count, key));
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if (rl_point == 0)
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{
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ding ();
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return (0);
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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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return (0);
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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, key;
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{
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if (count < 0)
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return (rl_vi_prev_word (-count, key));
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if (rl_point >= (rl_end - 1))
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{
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ding ();
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return (0);
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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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return (0);
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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 -1;
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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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return (0);
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}
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/* Move forward a word the way that 'W' does. */
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rl_vi_fWord (count)
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int count;
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{
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while (count-- && rl_point < (rl_end - 1))
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{
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/* Skip until whitespace. */
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while (!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
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rl_point++;
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/* Now skip whitespace. */
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while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
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rl_point++;
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}
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return (0);
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}
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rl_vi_bWord (count)
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int count;
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{
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while (count-- && rl_point > 0)
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{
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/* If we are at the start of a word, move back to whitespace so
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we will go back to the start of the previous word. */
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if (!whitespace (rl_line_buffer[rl_point]) &&
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whitespace (rl_line_buffer[rl_point - 1]))
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rl_point--;
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while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
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rl_point--;
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if (rl_point > 0)
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{
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while (--rl_point >= 0 && !whitespace (rl_line_buffer[rl_point]));
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rl_point++;
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}
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}
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return (0);
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}
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rl_vi_eWord (count)
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int count;
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{
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while (count-- && rl_point < (rl_end - 1))
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{
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if (!whitespace (rl_line_buffer[rl_point]))
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rl_point++;
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/* Move to the next non-whitespace character (to the start of the
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next word). */
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while (++rl_point < rl_end && whitespace (rl_line_buffer[rl_point]));
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if (rl_point && rl_point < rl_end)
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{
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/* Skip whitespace. */
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while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
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rl_point++;
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/* Skip until whitespace. */
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while (rl_point < rl_end && !whitespace (rl_line_buffer[rl_point]))
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rl_point++;
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/* Move back to the last character of the word. */
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rl_point--;
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}
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}
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return (0);
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}
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rl_vi_fword (count)
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int count;
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{
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while (count-- && rl_point < (rl_end - 1))
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{
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/* Move to white space (really non-identifer). */
|
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if (isident (rl_line_buffer[rl_point]))
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{
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while (isident (rl_line_buffer[rl_point]) && rl_point < rl_end)
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rl_point++;
|
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}
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else /* if (!whitespace (rl_line_buffer[rl_point])) */
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{
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while (!isident (rl_line_buffer[rl_point]) &&
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!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
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rl_point++;
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}
|
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|
||
/* Move past whitespace. */
|
||
while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
|
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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++;
|
||
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);
|
||
}
|
||
|
||
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. */
|
||
_rl_vi_doing_insert = 0;
|
||
vi_continued_command = 1;
|
||
}
|
||
else
|
||
vi_continued_command = 0;
|
||
}
|
||
|
||
rl_vi_movement_mode ()
|
||
{
|
||
if (rl_point > 0)
|
||
rl_backward (1);
|
||
|
||
#if 0
|
||
_rl_vi_reset_last ();
|
||
#endif
|
||
|
||
_rl_keymap = vi_movement_keymap;
|
||
_rl_vi_done_inserting ();
|
||
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 == c && (key == 'd' || key == 'y' || key == '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 ((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 && (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 (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_kill_text (rl_point, rl_mark);
|
||
|
||
rl_begin_undo_group ();
|
||
_rl_vi_doing_insert = 1;
|
||
_rl_vi_set_last (key, count, rl_arg_sign);
|
||
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 -1;
|
||
}
|
||
|
||
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 ();
|
||
|
||
if (uppercase_p (key))
|
||
{
|
||
rl_beg_of_line ();
|
||
rl_kill_line (1);
|
||
}
|
||
else
|
||
rl_delete (count, key);
|
||
|
||
rl_end_undo_group ();
|
||
|
||
_rl_vi_set_last (key, count, rl_arg_sign);
|
||
|
||
rl_begin_undo_group ();
|
||
_rl_vi_doing_insert = 1;
|
||
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);
|
||
}
|
||
|
||
#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 ;. */
|
||
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
|
||
|
||
#if defined (STATIC_MALLOC)
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* xmalloc and xrealloc () */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
static void memory_error_and_abort ();
|
||
|
||
static char *
|
||
xmalloc (bytes)
|
||
int bytes;
|
||
{
|
||
char *temp = (char *)malloc (bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
return (temp);
|
||
}
|
||
|
||
static char *
|
||
xrealloc (pointer, bytes)
|
||
char *pointer;
|
||
int bytes;
|
||
{
|
||
char *temp;
|
||
|
||
if (!pointer)
|
||
temp = (char *)xmalloc (bytes);
|
||
else
|
||
temp = (char *)realloc (pointer, bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
|
||
return (temp);
|
||
}
|
||
|
||
static void
|
||
memory_error_and_abort ()
|
||
{
|
||
fprintf (stderr, "readline: Out of virtual memory!\n");
|
||
abort ();
|
||
}
|
||
#endif /* STATIC_MALLOC */
|
||
|
||
#endif /* VI_MODE */
|