vi.c

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/* vi_delete_meta():
 *	Vi delete prefix command
 *	[d]
 */
protected el_action_t
/*ARGSUSED*/
vi_delete_meta(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(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(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(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, (int) un->isize);
		(void) 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(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(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(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);
}


/* 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)
{

#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(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(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(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(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(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(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(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(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(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(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(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);
}