Annotation of src/lib/libcurses/clrtoeol.c, Revision 1.34
1.34 ! blymn 1: /* $NetBSD: clrtoeol.c,v 1.33 2022/01/25 03:05:06 blymn Exp $ */
1.8 mikel 2:
1.1 cgd 3: /*
1.7 cgd 4: * Copyright (c) 1981, 1993, 1994
1.5 cgd 5: * The Regents of the University of California. All rights reserved.
1.1 cgd 6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.17 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
1.8 mikel 32: #include <sys/cdefs.h>
1.1 cgd 33: #ifndef lint
1.8 mikel 34: #if 0
1.7 cgd 35: static char sccsid[] = "@(#)clrtoeol.c 8.2 (Berkeley) 5/4/94";
1.8 mikel 36: #else
1.34 ! blymn 37: __RCSID("$NetBSD: clrtoeol.c,v 1.33 2022/01/25 03:05:06 blymn Exp $");
1.8 mikel 38: #endif
1.10 mrg 39: #endif /* not lint */
1.1 cgd 40:
1.23 blymn 41: #include <stdlib.h>
1.7 cgd 42: #include "curses.h"
1.11 blymn 43: #include "curses_private.h"
1.1 cgd 44:
1.12 blymn 45: #ifndef _CURSES_USE_MACROS
46:
47: /*
48: * clrtoeol --
49: * Clear up to the end of line.
50: */
51: int
52: clrtoeol(void)
53: {
54: return wclrtoeol(stdscr);
55: }
56:
57: #endif
1.15 blymn 58:
1.1 cgd 59: /*
1.4 mycroft 60: * wclrtoeol --
61: * Clear up to the end of line.
1.1 cgd 62: */
1.4 mycroft 63: int
1.12 blymn 64: wclrtoeol(WINDOW *win)
1.4 mycroft 65: {
1.10 mrg 66: int minx, x, y;
1.9 perry 67: __LDATA *end, *maxx, *sp;
1.29 roy 68: wchar_t bch;
1.31 uwe 69: attr_t battr;
70:
71: bch = win->bch;
72: if (win != curscr)
73: battr = win->battr & __ATTRIBUTES;
74: else
75: battr = 0;
1.1 cgd 76:
1.5 cgd 77: y = win->cury;
78: x = win->curx;
1.25 roy 79: if (win->alines[y]->flags & __ISPASTEOL) {
1.5 cgd 80: if (y < win->maxy - 1) {
1.25 roy 81: win->alines[y]->flags &= ~__ISPASTEOL;
1.5 cgd 82: y++;
83: x = 0;
1.16 jdc 84: win->cury = y;
85: win->curx = x;
1.5 cgd 86: } else
1.28 roy 87: return OK;
1.5 cgd 88: }
1.25 roy 89: end = &win->alines[y]->line[win->maxx];
1.5 cgd 90: minx = -1;
1.25 roy 91: maxx = &win->alines[y]->line[x];
1.30 roy 92:
1.29 roy 93: for (sp = maxx; sp < end; sp++) {
1.31 uwe 94: if (!(__NEED_ERASE(sp, bch, battr)))
1.29 roy 95: continue;
1.31 uwe 96:
1.29 roy 97: maxx = sp;
98: if (minx == -1)
99: minx = (int)(sp - win->alines[y]->line);
1.31 uwe 100:
1.29 roy 101: sp->ch = bch;
1.31 uwe 102: sp->attr = battr | (sp->attr & __ALTCHARSET);
1.23 blymn 103: #ifdef HAVE_WCHAR
1.29 roy 104: if (_cursesi_copy_nsp(win->bnsp, sp) == ERR)
105: return ERR;
1.33 blymn 106: sp->wcols = 1;
1.29 roy 107: #endif
108: }
1.30 roy 109:
1.23 blymn 110: __CTRACE(__CTRACE_ERASE, "CLRTOEOL: y = %d, minx = %d, maxx = %d, "
1.22 jdc 111: "firstch = %d, lastch = %d\n",
1.28 roy 112: y, minx, (int)(maxx - win->alines[y]->line),
1.25 roy 113: *win->alines[y]->firstchp, *win->alines[y]->lastchp);
1.4 mycroft 114: /* Update firstch and lastch for the line. */
1.28 roy 115: __touchline(win, y, x, (int)win->maxx - 1);
1.27 roy 116: __sync(win);
117: return OK;
1.1 cgd 118: }
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