125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
/* $NetBSD: clrtoeol.c,v 1.31 2020/03/15 01:18:43 uwe 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[] = "@(#)clrtoeol.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: clrtoeol.c,v 1.31 2020/03/15 01:18:43 uwe Exp $");
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#endif
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#endif /* not lint */
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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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* clrtoeol --
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* Clear up to the end of line.
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*/
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int
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clrtoeol(void)
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{
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return wclrtoeol(stdscr);
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}
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#endif
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/*
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* wclrtoeol --
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* Clear up to the end of line.
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*/
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int
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wclrtoeol(WINDOW *win)
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{
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int minx, x, y;
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__LDATA *end, *maxx, *sp;
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wchar_t bch;
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attr_t battr;
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#ifdef HAVE_WCHAR
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bch = (wchar_t)btowc((int)win->bch);
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#else
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bch = win->bch;
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#endif
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if (win != curscr)
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battr = win->battr & __ATTRIBUTES;
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else
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battr = 0;
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y = win->cury;
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x = win->curx;
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if (win->alines[y]->flags & __ISPASTEOL) {
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if (y < win->maxy - 1) {
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win->alines[y]->flags &= ~__ISPASTEOL;
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y++;
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x = 0;
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win->cury = y;
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win->curx = x;
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} else
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return OK;
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}
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end = &win->alines[y]->line[win->maxx];
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minx = -1;
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maxx = &win->alines[y]->line[x];
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for (sp = maxx; sp < end; sp++) {
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if (!(__NEED_ERASE(sp, bch, battr)))
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continue;
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maxx = sp;
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if (minx == -1)
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minx = (int)(sp - win->alines[y]->line);
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sp->ch = bch;
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sp->attr = battr | (sp->attr & __ALTCHARSET);
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#ifdef HAVE_WCHAR
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if (_cursesi_copy_nsp(win->bnsp, sp) == ERR)
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return ERR;
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SET_WCOL(*sp, 1);
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#endif
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_ERASE, "CLRTOEOL: y = %d, minx = %d, maxx = %d, "
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"firstch = %d, lastch = %d\n",
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y, minx, (int)(maxx - win->alines[y]->line),
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*win->alines[y]->firstchp, *win->alines[y]->lastchp);
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#endif
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/* Update firstch and lastch for the line. */
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__touchline(win, y, x, (int)win->maxx - 1);
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__sync(win);
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return OK;
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}
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