4.4BSD/usr/src/lib/libedit/vi.c
/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#if !defined(lint) && !defined(SCCSID)
static char sccsid[] = "@(#)vi.c 8.1 (Berkeley) 6/4/93";
#endif /* not lint && not SCCSID */
/*
* vi.c: Vi mode commands.
*/
#include "sys.h"
#include "el.h"
private el_action_t cv_action __P((EditLine *, int));
/* cv_action():
* Handle vi actions.
*/
private el_action_t
cv_action(el, c)
EditLine *el;
int c;
{
register char *cp, *kp;
if (el->el_chared.c_vcmd.action & DELETE) {
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_vcmd.pos = 0;
el->el_chared.c_undo.isize = 0;
el->el_chared.c_undo.dsize = 0;
kp = el->el_chared.c_undo.buf;
for (cp = el->el_line.buffer; cp < el->el_line.lastchar; cp++) {
*kp++ = *cp;
el->el_chared.c_undo.dsize++;
}
el->el_chared.c_undo.action = INSERT;
el->el_chared.c_undo.ptr = el->el_line.buffer;
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;
#ifdef notdef
/*
* I don't think that this is needed. But we keep it for now
*/
else if (el_chared.c_vcmd.action == NOP) {
el->el_chared.c_vcmd.pos = el->el_line.cursor;
el->el_chared.c_vcmd.action = c;
return CC_ARGHACK;
}
else {
el->el_chared.c_vcmd.action = 0;
el->el_chared.c_vcmd.pos = 0;
return CC_ERROR;
}
#endif
}
/* cv_paste():
* Paste previous deletion before or after the cursor
*/
protected el_action_t
cv_paste(el, c)
EditLine *el;
int c;
{
char *ptr;
c_undo_t *un = &el->el_chared.c_undo;
#ifdef DEBUG_PASTE
(void) fprintf(el->el_errfile, "Paste: %x \"%s\" +%d -%d\n",
un->action, un->buf, un->isize, un->dsize);
#endif
if (un->isize == 0)
return CC_ERROR;
if (!c && el->el_line.cursor < el->el_line.lastchar)
el->el_line.cursor++;
ptr = el->el_line.cursor;
c_insert(el, un->isize);
if (el->el_line.cursor + un->isize > el->el_line.lastchar)
return CC_ERROR;
(void) memcpy(ptr, un->buf, un->isize);
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(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
return cv_paste(el, 1);
}
/* vi_prev_space_word():
* Vi move to the previous space delimited word
* [B]
*/
protected el_action_t
/*ARGSUSED*/
vi_prev_space_word(el, c)
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->el_line.cursor,
el->el_line.buffer,
el->el_state.argument,
cv__isword);
if (el->el_chared.c_vcmd.action & DELETE) {
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(el, c)
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->el_line.cursor,
el->el_line.buffer,
el->el_state.argument,
ce__isword);
if (el->el_chared.c_vcmd.action & DELETE) {
cv_delfini(el);
return CC_REFRESH;
}
return CC_CURSOR;
}
/* vi_next_space_word():
* Vi move to the next space delimited word
* [W]
*/
protected el_action_t
/*ARGSUSED*/
vi_next_space_word(el, c)
EditLine *el;
int c;
{
if (el->el_line.cursor == el->el_line.lastchar)
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 & DELETE) {
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(el, c)
EditLine *el;
int c;
{
if (el->el_line.cursor == el->el_line.lastchar)
return CC_ERROR;
el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
el->el_line.lastchar,
el->el_state.argument,
ce__isword);
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action & DELETE) {
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(el, c)
EditLine *el;
int c;
{
if (el->el_line.cursor < el->el_line.lastchar) {
c = *el->el_line.cursor;
if (isupper(c))
*el->el_line.cursor++ = tolower(c);
else if (islower(c))
*el->el_line.cursor++ = toupper(c);
else
el->el_line.cursor++;
re_fastaddc(el);
return CC_NORM;
}
return CC_ERROR;
}
/* vi_change_meta():
* Vi change prefix command
* [c]
*/
protected el_action_t
/*ARGSUSED*/
vi_change_meta(el, c)
EditLine *el;
int c;
{
/*
* 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(el, c)
EditLine *el;
int c;
{
el->el_line.cursor = el->el_line.buffer;
el->el_chared.c_vcmd.ins = el->el_line.cursor;
el->el_chared.c_undo.ptr = el->el_line.cursor;
el->el_chared.c_undo.action = DELETE;
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(el, c)
EditLine *el;
int c;
{
el->el_map.current = el->el_map.key;
el->el_state.inputmode = MODE_REPLACE_1;
el->el_chared.c_undo.action = CHANGE;
el->el_chared.c_undo.ptr = el->el_line.cursor;
el->el_chared.c_undo.isize = 0;
el->el_chared.c_undo.dsize = 0;
return CC_NORM;
}
/* vi_replace_mode():
* Vi enter replace mode
* [R]
*/
protected el_action_t
/*ARGSUSED*/
vi_replace_mode(el, c)
EditLine *el;
int c;
{
el->el_map.current = el->el_map.key;
el->el_state.inputmode = MODE_REPLACE;
el->el_chared.c_undo.action = CHANGE;
el->el_chared.c_undo.ptr = el->el_line.cursor;
el->el_chared.c_undo.isize = 0;
el->el_chared.c_undo.dsize = 0;
return CC_NORM;
}
/* vi_substitute_char():
* Vi replace character under the cursor and enter insert mode
* [r]
*/
protected el_action_t
/*ARGSUSED*/
vi_substitute_char(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
(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(el, c)
EditLine *el;
int c;
{
(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(el, c)
EditLine *el;
int c;
{
el->el_map.current = el->el_map.key;
el->el_chared.c_vcmd.ins = el->el_line.cursor;
el->el_chared.c_undo.ptr = el->el_line.cursor;
el->el_chared.c_undo.action = DELETE;
return CC_NORM;
}
/* vi_add():
* Vi enter insert mode after the cursor
* [a]
*/
protected el_action_t
/*ARGSUSED*/
vi_add(el, c)
EditLine *el;
int c;
{
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;
el->el_chared.c_vcmd.ins = el->el_line.cursor;
el->el_chared.c_undo.ptr = el->el_line.cursor;
el->el_chared.c_undo.action = DELETE;
return ret;
}
/* vi_add_at_eol():
* Vi enter insert mode at end of line
* [A]
*/
protected el_action_t
/*ARGSUSED*/
vi_add_at_eol(el, c)
EditLine *el;
int c;
{
el->el_map.current = el->el_map.key;
el->el_line.cursor = el->el_line.lastchar;
/* Mark where insertion begins */
el->el_chared.c_vcmd.ins = el->el_line.lastchar;
el->el_chared.c_undo.ptr = el->el_line.lastchar;
el->el_chared.c_undo.action = DELETE;
return CC_CURSOR;
}
/* vi_delete_meta():
* Vi delete prefix command
* [d]
*/
protected el_action_t
/*ARGSUSED*/
vi_delete_meta(el, c)
EditLine *el;
int c;
{
return cv_action(el, DELETE);
}
/* vi_end_word():
* Vi move to the end of the current space delimited word
* [E]
*/
protected el_action_t
/*ARGSUSED*/
vi_end_word(el, c)
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);
if (el->el_chared.c_vcmd.action & DELETE) {
el->el_line.cursor++;
cv_delfini(el);
return CC_REFRESH;
}
return CC_CURSOR;
}
/* vi_to_end_word():
* Vi move to the end of the current word
* [e]
*/
protected el_action_t
/*ARGSUSED*/
vi_to_end_word(el, c)
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);
if (el->el_chared.c_vcmd.action & DELETE) {
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(el, c)
EditLine *el;
int c;
{
char *cp, *kp;
char temp;
int i, size;
c_undo_t *un = &el->el_chared.c_undo;
#ifdef DEBUG_UNDO
(void) fprintf(el->el_errfile, "Undo: %x \"%s\" +%d -%d\n",
un->action, un->buf, un->isize, un->dsize);
#endif
switch (un->action) {
case DELETE:
if (un->dsize == 0)
return CC_NORM;
(void) memcpy(un->buf, un->ptr, un->dsize);
for (cp = un->ptr; cp <= el->el_line.lastchar; cp++)
*cp = cp[un->dsize];
el->el_line.lastchar -= un->dsize;
el->el_line.cursor = un->ptr;
un->action = INSERT;
un->isize = un->dsize;
un->dsize = 0;
break;
case DELETE|INSERT:
size = un->isize - un->dsize;
if (size > 0)
i = un->dsize;
else
i = un->isize;
cp = un->ptr;
kp = un->buf;
while (i-- > 0) {
temp = *kp;
*kp++ = *cp;
*cp++ = temp;
}
if (size > 0) {
el->el_line.cursor = cp;
c_insert(el, size);
while (size-- > 0 && cp < el->el_line.lastchar) {
temp = *kp;
*kp++ = *cp;
*cp++ = temp;
}
}
else if (size < 0) {
size = -size;
for (; cp <= el->el_line.lastchar; cp++) {
*kp++ = *cp;
*cp = cp[size];
}
el->el_line.lastchar -= size;
}
el->el_line.cursor = un->ptr;
i = un->dsize;
un->dsize = un->isize;
un->isize = i;
break;
case INSERT:
if (un->isize == 0)
return CC_NORM;
el->el_line.cursor = un->ptr;
c_insert(el, un->isize);
memcpy(un->ptr, un->buf, un->isize);
un->action = DELETE;
un->dsize = un->isize;
un->isize = 0;
break;
case CHANGE:
if (un->isize == 0)
return CC_NORM;
el->el_line.cursor = un->ptr;
size = (int) (el->el_line.cursor - el->el_line.lastchar);
if (size < un->isize)
size = un->isize;
cp = un->ptr;
kp = un->buf;
for(i = 0; i < size; i++) {
temp = *kp;
*kp++ = *cp;
*cp++ = temp;
}
un->dsize = 0;
break;
default:
return CC_ERROR;
}
return CC_REFRESH;
}
/* vi_command_mode():
* Vi enter command mode (use alternative key bindings)
* [<ESC>]
*/
protected el_action_t
/*ARGSUSED*/
vi_command_mode(el, c)
EditLine *el;
int c;
{
int size;
/* [Esc] cancels pending action */
el->el_chared.c_vcmd.ins = 0;
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_vcmd.pos = 0;
el->el_state.doingarg = 0;
size = el->el_chared.c_undo.ptr - el->el_line.cursor;
if (size < 0)
size = -size;
if (el->el_chared.c_undo.action == (INSERT|DELETE) ||
el->el_chared.c_undo.action == DELETE)
el->el_chared.c_undo.dsize = size;
else
el->el_chared.c_undo.isize = size;
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(el, c)
EditLine *el;
int c;
{
if (el->el_state.doingarg) {
if (el->el_state.argument > 1000000)
return CC_ERROR;
el->el_state.argument =
(el->el_state.argument * 10) + (c - '0');
return CC_ARGHACK;
}
else {
el->el_line.cursor = el->el_line.buffer;
if (el->el_chared.c_vcmd.action & DELETE) {
cv_delfini(el);
return CC_REFRESH;
}
return CC_CURSOR;
}
}
/* vi_delete_prev_char():
* Vi move to previous character (backspace)
* [^H]
*/
protected el_action_t
/*ARGSUSED*/
vi_delete_prev_char(el, c)
EditLine *el;
int c;
{
if (el->el_chared.c_vcmd.ins == 0)
return CC_ERROR;
if (el->el_chared.c_vcmd.ins >
el->el_line.cursor - el->el_state.argument)
return CC_ERROR;
c_delbefore(el, el->el_state.argument);
el->el_line.cursor -= el->el_state.argument;
return CC_REFRESH;
} /* end v_del_char_prev */
/* 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(el, c)
EditLine *el;
int c;
{
#ifdef notyet
if (el->el_line.cursor == el->el_line.lastchar &&
el->el_line.cursor == el->el_line.buffer) {
#endif
term_overwrite(el, STReof, 4); /* then do a EOF */
term__flush();
return CC_EOF;
#ifdef notyet
}
else {
re_goto_bottom(el);
*el->el_line.lastchar = '\0'; /* just in case */
return CC_LIST_CHOICES;
}
#endif
}
/* vi_kill_line_prev():
* Vi cut from beginning of line to cursor
* [^U]
*/
protected el_action_t
/*ARGSUSED*/
vi_kill_line_prev(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
return cv_search(el, ED_SEARCH_PREV_HISTORY);
}
/* vi_search_next():
* Vi search history next
* [/]
*/
protected el_action_t
/*ARGSUSED*/
vi_search_next(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
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(el, c)
EditLine *el;
int c;
{
char ch;
if (el_getc(el, &ch) != 1)
return ed_end_of_file(el, 0);
el->el_search.chadir = CHAR_FWD;
el->el_search.chacha = ch;
return cv_csearch_fwd(el, ch, el->el_state.argument, 0);
}
/* vi_prev_char():
* Vi move to the character specified previous
* [F]
*/
protected el_action_t
/*ARGSUSED*/
vi_prev_char(el, c)
EditLine *el;
int c;
{
char ch;
if (el_getc(el, &ch) != 1)
return ed_end_of_file(el, 0);
el->el_search.chadir = CHAR_BACK;
el->el_search.chacha = ch;
return cv_csearch_back(el, ch, 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(el, c)
EditLine *el;
int c;
{
char ch;
if (el_getc(el, &ch) != 1)
return ed_end_of_file(el, 0);
return cv_csearch_fwd(el, ch, 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(el, c)
EditLine *el;
int c;
{
char ch;
if (el_getc(el, &ch) != 1)
return ed_end_of_file(el, 0);
return cv_csearch_back(el, ch, 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(el, c)
EditLine *el;
int c;
{
if (el->el_search.chacha == 0)
return CC_ERROR;
return el->el_search.chadir == CHAR_FWD ?
cv_csearch_fwd(el, el->el_search.chacha, el->el_state.argument, 0) :
cv_csearch_back(el, el->el_search.chacha, el->el_state.argument, 0);
}
/* vi_repeat_prev_char():
* Vi repeat current character search in the opposite search direction
* [,]
*/
protected el_action_t
/*ARGSUSED*/
vi_repeat_prev_char(el, c)
EditLine *el;
int c;
{
if (el->el_search.chacha == 0)
return CC_ERROR;
return el->el_search.chadir == CHAR_BACK ?
cv_csearch_fwd(el, el->el_search.chacha, el->el_state.argument, 0) :
cv_csearch_back(el, el->el_search.chacha, el->el_state.argument, 0);
}