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11fa4c4751
freebsd-skq/lib/libedit/vi.c
stefanf 11fa4c4751 Merge the following changes from NetBSD: 
chared.h 1.17, common.c 1.19, emacs.c 1.21, key.c 1.18, key.h 1.9, map.c 1.23,
term.c 1.42, term.h 1.17, vi.c 1.25:
  # Print the actual eofc, instead of ^D\b\b.
  # Change internal character decoding to prevent buffer oveflows.
key.c 1.19, key.h 1.10:
  # move declaration to header file.
term.c 1.43:
  # Coverity CID 806: Prevent NULL deref
term.c 1.44:
  # Coverity CID 1668: Plug memory leak.
term.c 1.45:
  # Fix compilation.

MFC after:	3 weeks
2007-03-11 18:30:22 +00:00

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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Christos Zoulas of Cornell University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $NetBSD: vi.c,v 1.25 2006/03/06 21:11:56 christos Exp $
*/
#if !defined(lint) && !defined(SCCSID)
static char sccsid[] = "@(#)vi.c 8.1 (Berkeley) 6/4/93";
#endif /* not lint && not SCCSID */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* vi.c: Vi mode commands.
*/
#include <sys/wait.h>
#include "sys.h"
#include "el.h"
private el_action_t cv_action(EditLine *, int);
private el_action_t cv_paste(EditLine *, int);
/* cv_action():
* Handle vi actions.
*/
private el_action_t
cv_action(EditLine *el, int c)
{
if (el->el_chared.c_vcmd.action != NOP) {
/* 'cc', 'dd' and (possibly) friends */
if (c != el->el_chared.c_vcmd.action)
return CC_ERROR;
if (!(c & YANK))
cv_undo(el);
cv_yank(el, el->el_line.buffer,
el->el_line.lastchar - el->el_line.buffer);
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_vcmd.pos = 0;
if (!(c & YANK)) {
el->el_line.lastchar = el->el_line.buffer;
el->el_line.cursor = el->el_line.buffer;
}
if (c & INSERT)
el->el_map.current = el->el_map.key;
return (CC_REFRESH);
}
el->el_chared.c_vcmd.pos = el->el_line.cursor;
el->el_chared.c_vcmd.action = c;
return (CC_ARGHACK);
}
/* cv_paste():
* Paste previous deletion before or after the cursor
*/
private el_action_t
cv_paste(EditLine *el, int c)
{
c_kill_t *k = &el->el_chared.c_kill;
int len = k->last - k->buf;
if (k->buf == NULL || len == 0)
return (CC_ERROR);
#ifdef DEBUG_PASTE
(void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", len, k->buf);
#endif
cv_undo(el);
if (!c && el->el_line.cursor < el->el_line.lastchar)
el->el_line.cursor++;
c_insert(el, len);
if (el->el_line.cursor + len > el->el_line.lastchar)
return (CC_ERROR);
(void) memcpy(el->el_line.cursor, k->buf, len +0u);
return (CC_REFRESH);
}
/* vi_paste_next():
* Vi paste previous deletion to the right of the cursor
* [p]
*/
protected el_action_t
/*ARGSUSED*/
vi_paste_next(EditLine *el, int c __unused)
{
return (cv_paste(el, 0));
}
/* vi_paste_prev():
* Vi paste previous deletion to the left of the cursor
* [P]
*/
protected el_action_t
/*ARGSUSED*/
vi_paste_prev(EditLine *el, int c __unused)
{
return (cv_paste(el, 1));
}
/* vi_prev_big_word():
* Vi move to the previous space delimited word
* [B]
*/
protected el_action_t
/*ARGSUSED*/
vi_prev_big_word(EditLine *el, int c)
{
if (el->el_line.cursor == el->el_line.buffer)
return (CC_ERROR);
el->el_line.cursor = cv_prev_word(el->el_line.cursor,
el->el_line.buffer,
el->el_state.argument,
cv__isWord);
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_prev_word():
* Vi move to the previous word
* [b]
*/
protected el_action_t
/*ARGSUSED*/
vi_prev_word(EditLine *el, int c __unused)
{
if (el->el_line.cursor == el->el_line.buffer)
return (CC_ERROR);
el->el_line.cursor = cv_prev_word(el->el_line.cursor,
el->el_line.buffer,
el->el_state.argument,
cv__isword);
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_next_big_word():
* Vi move to the next space delimited word
* [W]
*/
protected el_action_t
/*ARGSUSED*/
vi_next_big_word(EditLine *el, int c)
{
if (el->el_line.cursor >= el->el_line.lastchar - 1)
return (CC_ERROR);
el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
el->el_line.lastchar, el->el_state.argument, cv__isWord);
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_next_word():
* Vi move to the next word
* [w]
*/
protected el_action_t
/*ARGSUSED*/
vi_next_word(EditLine *el, int c __unused)
{
if (el->el_line.cursor >= el->el_line.lastchar - 1)
return (CC_ERROR);
el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
el->el_line.lastchar, el->el_state.argument, cv__isword);
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_change_case():
* Vi change case of character under the cursor and advance one character
* [~]
*/
protected el_action_t
vi_change_case(EditLine *el, int c)
{
int i;
if (el->el_line.cursor >= el->el_line.lastchar)
return (CC_ERROR);
cv_undo(el);
for (i = 0; i < el->el_state.argument; i++) {
c = *(unsigned char *)el->el_line.cursor;
if (isupper(c))
*el->el_line.cursor = tolower(c);
else if (islower(c))
*el->el_line.cursor = toupper(c);
if (++el->el_line.cursor >= el->el_line.lastchar) {
el->el_line.cursor--;
re_fastaddc(el);
break;
}
re_fastaddc(el);
}
return CC_NORM;
}
/* vi_change_meta():
* Vi change prefix command
* [c]
*/
protected el_action_t
/*ARGSUSED*/
vi_change_meta(EditLine *el, int c __unused)
{
/*
* Delete with insert == change: first we delete and then we leave in
* insert mode.
*/
return (cv_action(el, DELETE | INSERT));
}
/* vi_insert_at_bol():
* Vi enter insert mode at the beginning of line
* [I]
*/
protected el_action_t
/*ARGSUSED*/
vi_insert_at_bol(EditLine *el, int c __unused)
{
el->el_line.cursor = el->el_line.buffer;
cv_undo(el);
el->el_map.current = el->el_map.key;
return (CC_CURSOR);
}
/* vi_replace_char():
* Vi replace character under the cursor with the next character typed
* [r]
*/
protected el_action_t
/*ARGSUSED*/
vi_replace_char(EditLine *el, int c __unused)
{
if (el->el_line.cursor >= el->el_line.lastchar)
return CC_ERROR;
el->el_map.current = el->el_map.key;
el->el_state.inputmode = MODE_REPLACE_1;
cv_undo(el);
return (CC_ARGHACK);
}
/* vi_replace_mode():
* Vi enter replace mode
* [R]
*/
protected el_action_t
/*ARGSUSED*/
vi_replace_mode(EditLine *el, int c __unused)
{
el->el_map.current = el->el_map.key;
el->el_state.inputmode = MODE_REPLACE;
cv_undo(el);
return (CC_NORM);
}
/* vi_substitute_char():
* Vi replace character under the cursor and enter insert mode
* [s]
*/
protected el_action_t
/*ARGSUSED*/
vi_substitute_char(EditLine *el, int c __unused)
{
c_delafter(el, el->el_state.argument);
el->el_map.current = el->el_map.key;
return (CC_REFRESH);
}
/* vi_substitute_line():
* Vi substitute entire line
* [S]
*/
protected el_action_t
/*ARGSUSED*/
vi_substitute_line(EditLine *el, int c __unused)
{
cv_undo(el);
cv_yank(el, el->el_line.buffer,
el->el_line.lastchar - el->el_line.buffer);
(void) em_kill_line(el, 0);
el->el_map.current = el->el_map.key;
return (CC_REFRESH);
}
/* vi_change_to_eol():
* Vi change to end of line
* [C]
*/
protected el_action_t
/*ARGSUSED*/
vi_change_to_eol(EditLine *el, int c __unused)
{
cv_undo(el);
cv_yank(el, el->el_line.cursor,
el->el_line.lastchar - el->el_line.cursor);
(void) ed_kill_line(el, 0);
el->el_map.current = el->el_map.key;
return (CC_REFRESH);
}
/* vi_insert():
* Vi enter insert mode
* [i]
*/
protected el_action_t
/*ARGSUSED*/
vi_insert(EditLine *el, int c __unused)
{
el->el_map.current = el->el_map.key;
cv_undo(el);
return (CC_NORM);
}
/* vi_add():
* Vi enter insert mode after the cursor
* [a]
*/
protected el_action_t
/*ARGSUSED*/
vi_add(EditLine *el, int c __unused)
{
int ret;
el->el_map.current = el->el_map.key;
if (el->el_line.cursor < el->el_line.lastchar) {
el->el_line.cursor++;
if (el->el_line.cursor > el->el_line.lastchar)
el->el_line.cursor = el->el_line.lastchar;
ret = CC_CURSOR;
} else
ret = CC_NORM;
cv_undo(el);
return (ret);
}
/* vi_add_at_eol():
* Vi enter insert mode at end of line
* [A]
*/
protected el_action_t
/*ARGSUSED*/
vi_add_at_eol(EditLine *el, int c __unused)
{
el->el_map.current = el->el_map.key;
el->el_line.cursor = el->el_line.lastchar;
cv_undo(el);
return (CC_CURSOR);
}
/* vi_delete_meta():
* Vi delete prefix command
* [d]
*/
protected el_action_t
/*ARGSUSED*/
vi_delete_meta(EditLine *el, int c __unused)
{
return (cv_action(el, DELETE));
}
/* vi_end_big_word():
* Vi move to the end of the current space delimited word
* [E]
*/
protected el_action_t
/*ARGSUSED*/
vi_end_big_word(EditLine *el, int c)
{
if (el->el_line.cursor == el->el_line.lastchar)
return (CC_ERROR);
el->el_line.cursor = cv__endword(el->el_line.cursor,
el->el_line.lastchar, el->el_state.argument, cv__isWord);
if (el->el_chared.c_vcmd.action != NOP) {
el->el_line.cursor++;
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_end_word():
* Vi move to the end of the current word
* [e]
*/
protected el_action_t
/*ARGSUSED*/
vi_end_word(EditLine *el, int c __unused)
{
if (el->el_line.cursor == el->el_line.lastchar)
return (CC_ERROR);
el->el_line.cursor = cv__endword(el->el_line.cursor,
el->el_line.lastchar, el->el_state.argument, cv__isword);
if (el->el_chared.c_vcmd.action != NOP) {
el->el_line.cursor++;
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_undo():
* Vi undo last change
* [u]
*/
protected el_action_t
/*ARGSUSED*/
vi_undo(EditLine *el, int c __unused)
{
c_undo_t un = el->el_chared.c_undo;
if (un.len == -1)
return CC_ERROR;
/* switch line buffer and undo buffer */
el->el_chared.c_undo.buf = el->el_line.buffer;
el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
el->el_chared.c_undo.cursor = el->el_line.cursor - el->el_line.buffer;
el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
el->el_line.buffer = un.buf;
el->el_line.cursor = un.buf + un.cursor;
el->el_line.lastchar = un.buf + un.len;
return (CC_REFRESH);
}
/* vi_command_mode():
* Vi enter command mode (use alternative key bindings)
* [<ESC>]
*/
protected el_action_t
/*ARGSUSED*/
vi_command_mode(EditLine *el, int c __unused)
{
/* [Esc] cancels pending action */
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_vcmd.pos = 0;
el->el_state.doingarg = 0;
el->el_state.inputmode = MODE_INSERT;
el->el_map.current = el->el_map.alt;
#ifdef VI_MOVE
if (el->el_line.cursor > el->el_line.buffer)
el->el_line.cursor--;
#endif
return (CC_CURSOR);
}
/* vi_zero():
* Vi move to the beginning of line
* [0]
*/
protected el_action_t
vi_zero(EditLine *el, int c)
{
if (el->el_state.doingarg)
return ed_argument_digit(el, c);
el->el_line.cursor = el->el_line.buffer;
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_delete_prev_char():
* Vi move to previous character (backspace)
* [^H] in insert mode only
*/
protected el_action_t
/*ARGSUSED*/
vi_delete_prev_char(EditLine *el, int c __unused)
{
if (el->el_line.cursor <= el->el_line.buffer)
return (CC_ERROR);
c_delbefore1(el);
el->el_line.cursor--;
return (CC_REFRESH);
}
/* vi_list_or_eof():
* Vi list choices for completion or indicate end of file if empty line
* [^D]
*/
protected el_action_t
/*ARGSUSED*/
vi_list_or_eof(EditLine *el, int c)
{
if (el->el_line.cursor == el->el_line.lastchar) {
if (el->el_line.cursor == el->el_line.buffer) {
term_writec(el, c); /* then do a EOF */
return (CC_EOF);
} else {
/*
* Here we could list completions, but it is an
* error right now
*/
term_beep(el);
return (CC_ERROR);
}
} else {
#ifdef notyet
re_goto_bottom(el);
*el->el_line.lastchar = '\0'; /* just in case */
return (CC_LIST_CHOICES);
#else
/*
* Just complain for now.
*/
term_beep(el);
return (CC_ERROR);
#endif
}
}
/* vi_kill_line_prev():
* Vi cut from beginning of line to cursor
* [^U]
*/
protected el_action_t
/*ARGSUSED*/
vi_kill_line_prev(EditLine *el, int c __unused)
{
char *kp, *cp;
cp = el->el_line.buffer;
kp = el->el_chared.c_kill.buf;
while (cp < el->el_line.cursor)
*kp++ = *cp++; /* copy it */
el->el_chared.c_kill.last = kp;
c_delbefore(el, el->el_line.cursor - el->el_line.buffer);
el->el_line.cursor = el->el_line.buffer; /* zap! */
return (CC_REFRESH);
}
/* vi_search_prev():
* Vi search history previous
* [?]
*/
protected el_action_t
/*ARGSUSED*/
vi_search_prev(EditLine *el, int c __unused)
{
return (cv_search(el, ED_SEARCH_PREV_HISTORY));
}
/* vi_search_next():
* Vi search history next
* [/]
*/
protected el_action_t
/*ARGSUSED*/
vi_search_next(EditLine *el, int c __unused)
{
return (cv_search(el, ED_SEARCH_NEXT_HISTORY));
}
/* vi_repeat_search_next():
* Vi repeat current search in the same search direction
* [n]
*/
protected el_action_t
/*ARGSUSED*/
vi_repeat_search_next(EditLine *el, int c __unused)
{
if (el->el_search.patlen == 0)
return (CC_ERROR);
else
return (cv_repeat_srch(el, el->el_search.patdir));
}
/* vi_repeat_search_prev():
* Vi repeat current search in the opposite search direction
* [N]
*/
/*ARGSUSED*/
protected el_action_t
vi_repeat_search_prev(EditLine *el, int c __unused)
{
if (el->el_search.patlen == 0)
return (CC_ERROR);
else
return (cv_repeat_srch(el,
el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
}
/* vi_next_char():
* Vi move to the character specified next
* [f]
*/
protected el_action_t
/*ARGSUSED*/
vi_next_char(EditLine *el, int c __unused)
{
return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0);
}
/* vi_prev_char():
* Vi move to the character specified previous
* [F]
*/
protected el_action_t
/*ARGSUSED*/
vi_prev_char(EditLine *el, int c __unused)
{
return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0);
}
/* vi_to_next_char():
* Vi move up to the character specified next
* [t]
*/
protected el_action_t
/*ARGSUSED*/
vi_to_next_char(EditLine *el, int c __unused)
{
return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1);
}
/* vi_to_prev_char():
* Vi move up to the character specified previous
* [T]
*/
protected el_action_t
/*ARGSUSED*/
vi_to_prev_char(EditLine *el, int c __unused)
{
return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1);
}
/* vi_repeat_next_char():
* Vi repeat current character search in the same search direction
* [;]
*/
protected el_action_t
/*ARGSUSED*/
vi_repeat_next_char(EditLine *el, int c __unused)
{
return cv_csearch(el, el->el_search.chadir, el->el_search.chacha,
el->el_state.argument, el->el_search.chatflg);
}
/* vi_repeat_prev_char():
* Vi repeat current character search in the opposite search direction
* [,]
*/
protected el_action_t
/*ARGSUSED*/
vi_repeat_prev_char(EditLine *el, int c __unused)
{
el_action_t r;
int dir = el->el_search.chadir;
r = cv_csearch(el, -dir, el->el_search.chacha,
el->el_state.argument, el->el_search.chatflg);
el->el_search.chadir = dir;
return r;
}
/* vi_match():
* Vi go to matching () {} or []
* [%]
*/
protected el_action_t
/*ARGSUSED*/
vi_match(EditLine *el, int c)
{
const char match_chars[] = "()[]{}";
char *cp;
int delta, i, count;
char o_ch, c_ch;
*el->el_line.lastchar = '\0'; /* just in case */
i = strcspn(el->el_line.cursor, match_chars);
o_ch = el->el_line.cursor[i];
if (o_ch == 0)
return CC_ERROR;
delta = strchr(match_chars, o_ch) - match_chars;
c_ch = match_chars[delta ^ 1];
count = 1;
delta = 1 - (delta & 1) * 2;
for (cp = &el->el_line.cursor[i]; count; ) {
cp += delta;
if (cp < el->el_line.buffer || cp >= el->el_line.lastchar)
return CC_ERROR;
if (*cp == o_ch)
count++;
else if (*cp == c_ch)
count--;
}
el->el_line.cursor = cp;
if (el->el_chared.c_vcmd.action != NOP) {
/* NB posix says char under cursor should NOT be deleted
for -ve delta - this is different to netbsd vi. */
if (delta > 0)
el->el_line.cursor++;
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* vi_undo_line():
* Vi undo all changes to line
* [U]
*/
protected el_action_t
/*ARGSUSED*/
vi_undo_line(EditLine *el, int c)
{
cv_undo(el);
return hist_get(el);
}
/* vi_to_column():
* Vi go to specified column
* [|]
* NB netbsd vi goes to screen column 'n', posix says nth character
*/
protected el_action_t
/*ARGSUSED*/
vi_to_column(EditLine *el, int c)
{
el->el_line.cursor = el->el_line.buffer;
el->el_state.argument--;
return ed_next_char(el, 0);
}
/* vi_yank_end():
* Vi yank to end of line
* [Y]
*/
protected el_action_t
/*ARGSUSED*/
vi_yank_end(EditLine *el, int c)
{
cv_yank(el, el->el_line.cursor,
el->el_line.lastchar - el->el_line.cursor);
return CC_REFRESH;
}
/* vi_yank():
* Vi yank
* [y]
*/
protected el_action_t
/*ARGSUSED*/
vi_yank(EditLine *el, int c)
{
return cv_action(el, YANK);
}
/* vi_comment_out():
* Vi comment out current command
* [#]
*/
protected el_action_t
/*ARGSUSED*/
vi_comment_out(EditLine *el, int c)
{
el->el_line.cursor = el->el_line.buffer;
c_insert(el, 1);
*el->el_line.cursor = '#';
re_refresh(el);
return ed_newline(el, 0);
}
/* vi_alias():
* Vi include shell alias
* [@]
* NB: posix implies that we should enter insert mode, however
* this is against historical precedent...
*/
protected el_action_t
/*ARGSUSED*/
vi_alias(EditLine *el, int c)
{
#ifdef __weak_extern
char alias_name[3];
char *alias_text;
extern char *get_alias_text(const char *);
__weak_extern(get_alias_text);
if (get_alias_text == 0) {
return CC_ERROR;
}
alias_name[0] = '_';
alias_name[2] = 0;
if (el_getc(el, &alias_name[1]) != 1)
return CC_ERROR;
alias_text = get_alias_text(alias_name);
if (alias_text != NULL)
el_push(el, alias_text);
return CC_NORM;
#else
return CC_ERROR;
#endif
}
/* vi_to_history_line():
* Vi go to specified history file line.
* [G]
*/
protected el_action_t
/*ARGSUSED*/
vi_to_history_line(EditLine *el, int c)
{
int sv_event_no = el->el_history.eventno;
el_action_t rval;
if (el->el_history.eventno == 0) {
(void) strncpy(el->el_history.buf, el->el_line.buffer,
EL_BUFSIZ);
el->el_history.last = el->el_history.buf +
(el->el_line.lastchar - el->el_line.buffer);
}
/* Lack of a 'count' means oldest, not 1 */
if (!el->el_state.doingarg) {
el->el_history.eventno = 0x7fffffff;
hist_get(el);
} else {
/* This is brain dead, all the rest of this code counts
* upwards going into the past. Here we need count in the
* other direction (to match the output of fc -l).
* I could change the world, but this seems to suffice.
*/
el->el_history.eventno = 1;
if (hist_get(el) == CC_ERROR)
return CC_ERROR;
el->el_history.eventno = 1 + el->el_history.ev.num
- el->el_state.argument;
if (el->el_history.eventno < 0) {
el->el_history.eventno = sv_event_no;
return CC_ERROR;
}
}
rval = hist_get(el);
if (rval == CC_ERROR)
el->el_history.eventno = sv_event_no;
return rval;
}
/* vi_histedit():
* Vi edit history line with vi
* [v]
*/
protected el_action_t
/*ARGSUSED*/
vi_histedit(EditLine *el, int c)
{
int fd;
pid_t pid;
int st;
char tempfile[] = "/tmp/histedit.XXXXXXXXXX";
char *cp;
if (el->el_state.doingarg) {
if (vi_to_history_line(el, 0) == CC_ERROR)
return CC_ERROR;
}
fd = mkstemp(tempfile);
if (fd < 0)
return CC_ERROR;
cp = el->el_line.buffer;
write(fd, cp, el->el_line.lastchar - cp +0u);
write(fd, "\n", 1);
pid = fork();
switch (pid) {
case -1:
close(fd);
unlink(tempfile);
return CC_ERROR;
case 0:
close(fd);
execlp("vi", "vi", tempfile, NULL);
exit(0);
/*NOTREACHED*/
default:
while (waitpid(pid, &st, 0) != pid)
continue;
lseek(fd, 0ll, SEEK_SET);
st = read(fd, cp, el->el_line.limit - cp +0u);
if (st > 0 && cp[st - 1] == '\n')
st--;
el->el_line.cursor = cp;
el->el_line.lastchar = cp + st;
break;
}
close(fd);
unlink(tempfile);
/* return CC_REFRESH; */
return ed_newline(el, 0);
}
/* vi_history_word():
* Vi append word from previous input line
* [_]
* Who knows where this one came from!
* '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_'
*/
protected el_action_t
/*ARGSUSED*/
vi_history_word(EditLine *el, int c)
{
const char *wp = HIST_FIRST(el);
const char *wep, *wsp;
int len;
char *cp;
const char *lim;
if (wp == NULL)
return CC_ERROR;
wep = wsp = 0;
do {
while (isspace((unsigned char)*wp))
wp++;
if (*wp == 0)
break;
wsp = wp;
while (*wp && !isspace((unsigned char)*wp))
wp++;
wep = wp;
} while ((!el->el_state.doingarg || --el->el_state.argument > 0) && *wp != 0);
if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0))
return CC_ERROR;
cv_undo(el);
len = wep - wsp;
if (el->el_line.cursor < el->el_line.lastchar)
el->el_line.cursor++;
c_insert(el, len + 1);
cp = el->el_line.cursor;
lim = el->el_line.limit;
if (cp < lim)
*cp++ = ' ';
while (wsp < wep && cp < lim)
*cp++ = *wsp++;
el->el_line.cursor = cp;
el->el_map.current = el->el_map.key;
return CC_REFRESH;
}
/* vi_redo():
* Vi redo last non-motion command
* [.]
*/
protected el_action_t
/*ARGSUSED*/
vi_redo(EditLine *el, int c)
{
c_redo_t *r = &el->el_chared.c_redo;
if (!el->el_state.doingarg && r->count) {
el->el_state.doingarg = 1;
el->el_state.argument = r->count;
}
el->el_chared.c_vcmd.pos = el->el_line.cursor;
el->el_chared.c_vcmd.action = r->action;
if (r->pos != r->buf) {
if (r->pos + 1 > r->lim)
/* sanity */
r->pos = r->lim - 1;
r->pos[0] = 0;
el_push(el, r->buf);
}
el->el_state.thiscmd = r->cmd;
el->el_state.thisch = r->ch;
return (*el->el_map.func[r->cmd])(el, r->ch);
}
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