140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/* $NetBSD: insch.c,v 1.28 2022/10/19 06:09:27 blymn Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)insch.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: insch.c,v 1.28 2022/10/19 06:09:27 blymn Exp $");
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#endif
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#endif /* not lint */
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#include <string.h>
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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#ifndef _CURSES_USE_MACROS
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/*
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* insch --
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* Do an insert-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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insch(chtype ch)
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{
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return winsch(stdscr, ch);
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}
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/*
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* mvinsch --
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* Do an insert-char on the line at (y, x).
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*/
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int
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mvinsch(int y, int x, chtype ch)
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{
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return mvwinsch(stdscr, y, x, ch);
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}
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/*
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* mvwinsch --
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* Do an insert-char on the line at (y, x) in the given window.
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*/
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int
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mvwinsch(WINDOW *win, int y, int x, chtype ch)
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{
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if (wmove(win, y, x) == ERR)
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return ERR;
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return winsch(win, ch);
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}
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#endif
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/*
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* winsch --
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* Do an insert-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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winsch(WINDOW *win, chtype ch)
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{
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__LDATA *end, *temp1, *temp2;
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attr_t attr;
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if (__using_color)
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attr = win->battr & __COLOR;
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else
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attr = 0;
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end = &win->alines[win->cury]->line[win->curx];
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temp1 = &win->alines[win->cury]->line[win->maxx - 1];
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temp2 = temp1 - 1;
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while (temp1 > end) {
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(void)memcpy(temp1, temp2, sizeof(__LDATA));
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temp1--, temp2--;
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}
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temp1->ch = (wchar_t)ch & __CHARTEXT;
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if (temp1->ch == win->bch) {
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temp1->ch = win->bch;
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temp1->cflags &= ~CA_CONTINUATION;
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temp1->cflags |= CA_BACKGROUND;
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} else {
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temp1->cflags &= ~ CA_BACKGROUND;
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}
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temp1->attr = (attr_t) ch & __ATTRIBUTES;
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if (temp1->attr & __COLOR)
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temp1->attr |= (win->battr & ~__COLOR);
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else
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temp1->attr |= win->battr;
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#ifdef HAVE_WCHAR
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if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
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return ERR;
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temp1->wcols = 1;
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#endif /* HAVE_WCHAR */
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__touchline(win, (int)win->cury, (int)win->curx, (int)win->maxx - 1);
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if (win->cury == LINES - 1 &&
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(win->alines[LINES - 1]->line[COLS - 1].ch != ' ' ||
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win->alines[LINES - 1]->line[COLS - 1].attr != attr)) {
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if (win->flags & __SCROLLOK) {
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wrefresh(win);
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scroll(win);
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win->cury--;
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} else
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return ERR;
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}
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return OK;
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}
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