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freebsd/contrib/libreadline/vi_mode.c
Andrey A. Chernov dfd74d725b Merge after importing official patches 3-7
2007-11-07 04:42:20 +00:00

1786 lines
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/* $FreeBSD$ */
/* vi_mode.c -- A vi emulation mode for Bash.
Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */
/* Copyright (C) 1987-2005 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 2, 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,
59 Temple Place, Suite 330, Boston, MA 02111 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 "rlmbutil.h"
#include "readline.h"
#include "history.h"
#include "rlprivate.h"
#include "xmalloc.h"
#ifndef member
#define member(c, s) ((c) ? (char *)strchr ((s), (c)) != (char *)NULL : 0)
#endif
int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
/* Non-zero means enter insertion mode. */
static int _rl_vi_doing_insert;
/* Command keys which do movement for xxx_to commands. */
static const 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_repeat = 1;
static int _rl_vi_last_arg_sign = 1;
static int _rl_vi_last_motion;
#if defined (HANDLE_MULTIBYTE)
static char _rl_vi_last_search_mbchar[MB_LEN_MAX];
static int _rl_vi_last_search_mblen;
#else
static int _rl_vi_last_search_char;
#endif
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 const char *vi_textmod = "_*\\AaIiCcDdPpYyRrSsXx~";
/* Arrays for the saved marks. */
static int vi_mark_chars['z' - 'a' + 1];
static void _rl_vi_stuff_insert PARAMS((int));
static void _rl_vi_save_insert PARAMS((UNDO_LIST *));
static void _rl_vi_backup PARAMS((void));
static int _rl_vi_arg_dispatch PARAMS((int));
static int rl_digit_loop1 PARAMS((void));
static int _rl_vi_set_mark PARAMS((void));
static int _rl_vi_goto_mark PARAMS((void));
static void _rl_vi_append_forward PARAMS((int));
static int _rl_vi_callback_getchar PARAMS((char *, int));
#if defined (READLINE_CALLBACKS)
static int _rl_vi_callback_set_mark PARAMS((_rl_callback_generic_arg *));
static int _rl_vi_callback_goto_mark PARAMS((_rl_callback_generic_arg *));
static int _rl_vi_callback_change_char PARAMS((_rl_callback_generic_arg *));
static int _rl_vi_callback_char_search PARAMS((_rl_callback_generic_arg *));
#endif
void
_rl_vi_initialize_line ()
{
register int i;
for (i = 0; i < sizeof (vi_mark_chars) / sizeof (int); i++)
vi_mark_chars[i] = -1;
RL_UNSETSTATE(RL_STATE_VICMDONCE);
}
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;
}
/* A convenience function that calls _rl_vi_set_last to save the last command
information and enters insertion mode. */
void
rl_vi_start_inserting (key, repeat, sign)
int key, repeat, sign;
{
_rl_vi_set_last (key, repeat, sign);
rl_vi_insertion_mode (1, key);
}
/* 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;
{
int r;
if (!rl_explicit_arg)
{
rl_numeric_arg = _rl_vi_last_repeat;
rl_arg_sign = _rl_vi_last_arg_sign;
}
r = 0;
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_vi_backup ();
}
/* Ditto for redoing an insert with `a', but move forward a character first
like the `a' command does. */
else if (_rl_vi_last_command == 'a' && vi_insert_buffer && *vi_insert_buffer)
{
_rl_vi_append_forward ('a');
_rl_vi_stuff_insert (count);
if (rl_point > 0)
_rl_vi_backup ();
}
else
r = _rl_dispatch (_rl_vi_last_command, _rl_keymap);
vi_redoing = 0;
return (r);
}
/* 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_free_saved_history_line ();
rl_noninc_forward_search (count, key);
break;
case '/':
_rl_free_saved_history_line ();
rl_noninc_reverse_search (count, key);
break;
default:
rl_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_start_inserting (key, 1, rl_arg_sign);
return (0);
}
/* Tilde expansion for vi mode. */
int
rl_vi_tilde_expand (ignore, key)
int ignore, key;
{
rl_tilde_expand (0, key);
rl_vi_start_inserting (key, 1, rl_arg_sign);
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)
{
rl_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))
{
rl_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)
{
rl_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]))
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 (_rl_isident (rl_line_buffer[rl_point]))
{
while (_rl_isident (rl_line_buffer[rl_point]) && rl_point < rl_end)
rl_point++;
}
else /* if (!whitespace (rl_line_buffer[rl_point])) */
{
while (!_rl_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 = _rl_isident (rl_line_buffer[rl_point - 1]);
if ((_rl_isident (rl_line_buffer[rl_point]) && !last_is_ident) ||
(!_rl_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 (_rl_isident (rl_line_buffer[rl_point]))
while (--rl_point >= 0 && _rl_isident (rl_line_buffer[rl_point]));
else
while (--rl_point >= 0 && !_rl_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 (_rl_isident (rl_line_buffer[rl_point]))
while (++rl_point < rl_end && _rl_isident (rl_line_buffer[rl_point]));
else
while (++rl_point < rl_end && !_rl_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);
}
static void
_rl_vi_append_forward (key)
int key;
{
int point;
if (rl_point < rl_end)
{
if (MB_CUR_MAX == 1 || rl_byte_oriented)
rl_point++;
else
{
point = rl_point;
rl_forward_char (1, key);
if (point == rl_point)
rl_point = rl_end;
}
}
}
int
rl_vi_append_mode (count, key)
int count, key;
{
_rl_vi_append_forward (key);
rl_vi_start_inserting (key, 1, rl_arg_sign);
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 || up->what != UNDO_INSERT)
{
if (vi_insert_buffer_size >= 1)
vi_insert_buffer[0] = '\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 = (char *)xrealloc (vi_insert_buffer, vi_insert_buffer_size);
}
strncpy (vi_insert_buffer, rl_line_buffer + start, len - 1);
vi_insert_buffer[len-1] = '\0';
}
void
_rl_vi_done_inserting ()
{
if (_rl_vi_doing_insert)
{
/* The `C', `s', and `S' commands set this. */
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_vi_last_key_before_insert == 'a') && 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_char (1, key);
_rl_keymap = vi_movement_keymap;
_rl_vi_done_inserting ();
/* This is how POSIX.2 says `U' should behave -- everything up until the
first time you go into command mode should not be undone. */
if (RL_ISSTATE (RL_STATE_VICMDONCE) == 0)
rl_free_undo_list ();
RL_SETSTATE (RL_STATE_VICMDONCE);
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));
}
/* Change the case of the next COUNT characters. */
#if defined (HANDLE_MULTIBYTE)
static int
_rl_vi_change_mbchar_case (count)
int count;
{
wchar_t wc;
char mb[MB_LEN_MAX+1];
int mlen, p;
mbstate_t ps;
memset (&ps, 0, sizeof (mbstate_t));
if (_rl_adjust_point (rl_line_buffer, rl_point, &ps) > 0)
count--;
while (count-- && rl_point < rl_end)
{
mbrtowc (&wc, rl_line_buffer + rl_point, rl_end - rl_point, &ps);
if (iswupper (wc))
wc = towlower (wc);
else if (iswlower (wc))
wc = towupper (wc);
else
{
/* Just skip over chars neither upper nor lower case */
rl_forward_char (1, 0);
continue;
}
/* Vi is kind of strange here. */
if (wc)
{
p = rl_point;
mlen = wcrtomb (mb, wc, &ps);
if (mlen >= 0)
mb[mlen] = '\0';
rl_begin_undo_group ();
rl_vi_delete (1, 0);
if (rl_point < p) /* Did we retreat at EOL? */
rl_point++; /* XXX - should we advance more than 1 for mbchar? */
rl_insert_text (mb);
rl_end_undo_group ();
rl_vi_check ();
}
else
rl_forward_char (1, 0);
}
return 0;
}
#endif
int
rl_vi_change_case (count, ignore)
int count, ignore;
{
int c, p;
/* Don't try this on an empty line. */
if (rl_point >= rl_end)
return (0);
c = 0;
#if defined (HANDLE_MULTIBYTE)
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
return (_rl_vi_change_mbchar_case (count));
#endif
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_char (1, c);
continue;
}
/* Vi is kind of strange here. */
if (c)
{
p = rl_point;
rl_begin_undo_group ();
rl_vi_delete (1, c);
if (rl_point < p) /* Did we retreat at EOL? */
rl_point++;
_rl_insert_char (1, c);
rl_end_undo_group ();
rl_vi_check ();
}
else
rl_forward_char (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_find_next_mbchar (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
while (count--)
rl_yank (1, key);
rl_backward_char (1, key);
return (0);
}
static void
_rl_vi_backup ()
{
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
else
rl_point--;
}
int
rl_vi_check ()
{
if (rl_point && rl_point == rl_end)
{
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
else
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;
RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (c < 0)
{
*nextkey = 0;
return -1;
}
*nextkey = c;
if (!member (c, vi_motion))
{
if (_rl_digit_p (c))
{
save = rl_numeric_arg;
rl_numeric_arg = _rl_digit_value (c);
rl_explicit_arg = 1;
RL_SETSTATE (RL_STATE_NUMERICARG|RL_STATE_VIMOTION);
rl_digit_loop1 ();
RL_UNSETSTATE (RL_STATE_VIMOTION);
rl_numeric_arg *= save;
RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key (); /* real command */
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (c < 0)
{
*nextkey = 0;
return -1;
}
*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] = '\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 ((_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)
SWAP (rl_point, rl_mark);
return (0);
}
/* Process C as part of the current numeric argument. Return -1 if the
argument should be aborted, 0 if we should not read any more chars, and
1 if we should continue to read chars. */
static int
_rl_vi_arg_dispatch (c)
int c;
{
int key;
key = c;
if (c >= 0 && _rl_keymap[c].type == ISFUNC && _rl_keymap[c].function == rl_universal_argument)
{
rl_numeric_arg *= 4;
return 1;
}
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;
return 1;
}
else
{
rl_clear_message ();
rl_stuff_char (key);
return 0;
}
}
/* A simplified loop for vi. Don't dispatch key at end.
Don't recognize minus sign?
Should this do rl_save_prompt/rl_restore_prompt? */
static int
rl_digit_loop1 ()
{
int c, r;
while (1)
{
if (_rl_arg_overflow ())
return 1;
c = _rl_arg_getchar ();
r = _rl_vi_arg_dispatch (c);
if (r <= 0)
break;
}
RL_UNSETSTATE(RL_STATE_NUMERICARG);
return (0);
}
int
rl_vi_delete_to (count, key)
int count, key;
{
int c;
if (_rl_uppercase_p (key))
rl_stuff_char ('$');
else if (vi_redoing)
rl_stuff_char (_rl_vi_last_motion);
if (rl_vi_domove (key, &c))
{
rl_ding ();
return -1;
}
/* These are the motion commands that do not require adjusting the
mark. */
if ((strchr (" l|h^0bB", c) == 0) && (rl_mark < rl_end))
rl_mark++;
rl_kill_text (rl_point, rl_mark);
return (0);
}
int
rl_vi_change_to (count, key)
int count, key;
{
int c, start_pos;
if (_rl_uppercase_p (key))
rl_stuff_char ('$');
else if (vi_redoing)
rl_stuff_char (_rl_vi_last_motion);
start_pos = rl_point;
if (rl_vi_domove (key, &c))
{
rl_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_start_inserting (key, rl_numeric_arg, rl_arg_sign);
}
return (0);
}
int
rl_vi_yank_to (count, key)
int count, key;
{
int c, save;
save = rl_point;
if (_rl_uppercase_p (key))
rl_stuff_char ('$');
if (rl_vi_domove (key, &c))
{
rl_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_rubout (count, key)
int count, key;
{
int opoint;
if (count < 0)
return (rl_vi_delete (-count, key));
if (rl_point == 0)
{
rl_ding ();
return -1;
}
opoint = rl_point;
if (count > 1 && MB_CUR_MAX > 1 && rl_byte_oriented == 0)
rl_backward_char (count, key);
else if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
else
rl_point -= count;
if (rl_point < 0)
rl_point = 0;
rl_kill_text (rl_point, opoint);
return (0);
}
int
rl_vi_delete (count, key)
int count, key;
{
int end;
if (count < 0)
return (rl_vi_rubout (-count, key));
if (rl_end == 0)
{
rl_ding ();
return -1;
}
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
end = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
else
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_char (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));
}
static int _rl_cs_dir, _rl_cs_orig_dir;
#if defined (READLINE_CALLBACKS)
static int
_rl_vi_callback_char_search (data)
_rl_callback_generic_arg *data;
{
int c;
#if defined (HANDLE_MULTIBYTE)
c = _rl_vi_last_search_mblen = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
#else
RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
#endif
if (c <= 0)
return -1;
#if !defined (HANDLE_MULTIBYTE)
_rl_vi_last_search_char = c;
#endif
_rl_callback_func = 0;
_rl_want_redisplay = 1;
#if defined (HANDLE_MULTIBYTE)
return (_rl_char_search_internal (data->count, _rl_cs_dir, _rl_vi_last_search_mbchar, _rl_vi_last_search_mblen));
#else
return (_rl_char_search_internal (data->count, _rl_cs_dir, _rl_vi_last_search_char));
#endif
}
#endif
int
rl_vi_char_search (count, key)
int count, key;
{
int c;
#if defined (HANDLE_MULTIBYTE)
static char *target;
static int tlen;
#else
static char target;
#endif
if (key == ';' || key == ',')
_rl_cs_dir = (key == ';') ? _rl_cs_orig_dir : -_rl_cs_orig_dir;
else
{
switch (key)
{
case 't':
_rl_cs_orig_dir = _rl_cs_dir = FTO;
break;
case 'T':
_rl_cs_orig_dir = _rl_cs_dir = BTO;
break;
case 'f':
_rl_cs_orig_dir = _rl_cs_dir = FFIND;
break;
case 'F':
_rl_cs_orig_dir = _rl_cs_dir = BFIND;
break;
}
if (vi_redoing)
{
/* set target and tlen below */
}
#if defined (READLINE_CALLBACKS)
else if (RL_ISSTATE (RL_STATE_CALLBACK))
{
_rl_callback_data = _rl_callback_data_alloc (count);
_rl_callback_data->i1 = _rl_cs_dir;
_rl_callback_func = _rl_vi_callback_char_search;
return (0);
}
#endif
else
{
#if defined (HANDLE_MULTIBYTE)
c = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
if (c <= 0)
return -1;
_rl_vi_last_search_mblen = c;
#else
RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (c < 0)
return -1;
_rl_vi_last_search_char = c;
#endif
}
}
#if defined (HANDLE_MULTIBYTE)
target = _rl_vi_last_search_mbchar;
tlen = _rl_vi_last_search_mblen;
#else
target = _rl_vi_last_search_char;
#endif
#if defined (HANDLE_MULTIBYTE)
return (_rl_char_search_internal (count, _rl_cs_dir, target, tlen));
#else
return (_rl_char_search_internal (count, _rl_cs_dir, target));
#endif
}
/* Match brackets */
int
rl_vi_match (ignore, key)
int ignore, key;
{
int count = 1, brack, pos, tmp, pre;
pos = rl_point;
if ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
{
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
{
while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
{
pre = rl_point;
rl_forward_char (1, key);
if (pre == rl_point)
break;
}
}
else
while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0 &&
rl_point < rl_end - 1)
rl_forward_char (1, key);
if (brack <= 0)
{
rl_point = pos;
rl_ding ();
return -1;
}
}
pos = rl_point;
if (brack < 0)
{
while (count)
{
tmp = pos;
if (MB_CUR_MAX == 1 || rl_byte_oriented)
pos--;
else
{
pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY);
if (tmp == pos)
pos--;
}
if (pos >= 0)
{
int b = rl_vi_bracktype (rl_line_buffer[pos]);
if (b == -brack)
count--;
else if (b == brack)
count++;
}
else
{
rl_ding ();
return -1;
}
}
}
else
{ /* brack > 0 */
while (count)
{
if (MB_CUR_MAX == 1 || rl_byte_oriented)
pos++;
else
pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY);
if (pos < rl_end)
{
int b = rl_vi_bracktype (rl_line_buffer[pos]);
if (b == -brack)
count--;
else if (b == brack)
count++;
}
else
{
rl_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;
}
}
static int
_rl_vi_change_char (count, c, mb)
int count, c;
char *mb;
{
int p;
if (c == '\033' || c == CTRL ('C'))
return -1;
rl_begin_undo_group ();
while (count-- && rl_point < rl_end)
{
p = rl_point;
rl_vi_delete (1, c);
if (rl_point < p) /* Did we retreat at EOL? */
rl_point++;
#if defined (HANDLE_MULTIBYTE)
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
rl_insert_text (mb);
else
#endif
_rl_insert_char (1, c);
}
/* The cursor shall be left on the last character changed. */
rl_backward_char (1, c);
rl_end_undo_group ();
return (0);
}
static int
_rl_vi_callback_getchar (mb, mlen)
char *mb;
int mlen;
{
int c;
RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (c < 0)
return -1;
#if defined (HANDLE_MULTIBYTE)
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
c = _rl_read_mbstring (c, mb, mlen);
#endif
return c;
}
#if defined (READLINE_CALLBACKS)
static int
_rl_vi_callback_change_char (data)
_rl_callback_generic_arg *data;
{
int c;
char mb[MB_LEN_MAX];
_rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
if (c < 0)
return -1;
_rl_callback_func = 0;
_rl_want_redisplay = 1;
return (_rl_vi_change_char (data->count, c, mb));
}
#endif
int
rl_vi_change_char (count, key)
int count, key;
{
int c;
char mb[MB_LEN_MAX];
if (vi_redoing)
{
c = _rl_vi_last_replacement;
mb[0] = c;
mb[1] = '\0';
}
#if defined (READLINE_CALLBACKS)
else if (RL_ISSTATE (RL_STATE_CALLBACK))
{
_rl_callback_data = _rl_callback_data_alloc (count);
_rl_callback_func = _rl_vi_callback_change_char;
return (0);
}
#endif
else
_rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
if (c < 0)
return -1;
return (_rl_vi_change_char (count, c, mb));
}
int
rl_vi_subst (count, key)
int count, key;
{
/* If we are redoing, rl_vi_change_to will stuff the last motion char */
if (vi_redoing == 0)
rl_stuff_char ((key == 'S') ? 'c' : 'l'); /* `S' == `cc', `s' == `cl' */
return (rl_vi_change_to (count, 'c'));
}
int
rl_vi_overstrike (count, key)
int count, key;
{
if (_rl_vi_doing_insert == 0)
{
_rl_vi_doing_insert = 1;
rl_begin_undo_group ();
}
if (count > 0)
{
_rl_overwrite_char (count, key);
vi_replace_count += count;
}
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)
{
rl_ding ();
break;
}
s = rl_point;
if (rl_do_undo ())
vi_replace_count--;
if (rl_point == s)
rl_backward_char (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] == ';')
{
rl_ding ();
return (0);
}
rl_possible_completions ();
rl_point = save_pos;
return (0);
}
#endif
/* Functions to save and restore marks. */
static int
_rl_vi_set_mark ()
{
int ch;
RL_SETSTATE(RL_STATE_MOREINPUT);
ch = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (ch < 0 || ch < 'a' || ch > 'z') /* make test against 0 explicit */
{
rl_ding ();
return -1;
}
ch -= 'a';
vi_mark_chars[ch] = rl_point;
return 0;
}
#if defined (READLINE_CALLBACKS)
static int
_rl_vi_callback_set_mark (data)
_rl_callback_generic_arg *data;
{
_rl_callback_func = 0;
_rl_want_redisplay = 1;
return (_rl_vi_set_mark ());
}
#endif
int
rl_vi_set_mark (count, key)
int count, key;
{
#if defined (READLINE_CALLBACKS)
if (RL_ISSTATE (RL_STATE_CALLBACK))
{
_rl_callback_data = 0;
_rl_callback_func = _rl_vi_callback_set_mark;
return (0);
}
#endif
return (_rl_vi_set_mark ());
}
static int
_rl_vi_goto_mark ()
{
int ch;
RL_SETSTATE(RL_STATE_MOREINPUT);
ch = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
if (ch == '`')
{
rl_point = rl_mark;
return 0;
}
else if (ch < 0 || ch < 'a' || ch > 'z') /* make test against 0 explicit */
{
rl_ding ();
return -1;
}
ch -= 'a';
if (vi_mark_chars[ch] == -1)
{
rl_ding ();
return -1;
}
rl_point = vi_mark_chars[ch];
return 0;
}
#if defined (READLINE_CALLBACKS)
static int
_rl_vi_callback_goto_mark (data)
_rl_callback_generic_arg *data;
{
_rl_callback_func = 0;
_rl_want_redisplay = 1;
return (_rl_vi_goto_mark ());
}
#endif
int
rl_vi_goto_mark (count, key)
int count, key;
{
#if defined (READLINE_CALLBACKS)
if (RL_ISSTATE (RL_STATE_CALLBACK))
{
_rl_callback_data = 0;
_rl_callback_func = _rl_vi_callback_goto_mark;
return (0);
}
#endif
return (_rl_vi_goto_mark ());
}
#endif /* VI_MODE */
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