1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 #include	<sys/types.h>
45 #include	<stdlib.h>
46 #include	"curses_inc.h"
47 
48 /* This routine clears up to the end of line. */
49 
50 int
wclrtoeol(WINDOW * win)51 wclrtoeol(WINDOW *win)
52 {
53 	int	y = win->_cury;
54 	int	x = win->_curx;
55 	int	maxx = win->_maxx;
56 	int			cx;
57 	chtype		wc;
58 
59 	if (win != curscr) {
60 		win->_nbyte = -1;
61 		if (_scrmax > 1) {
62 			if (ISMBIT(win->_y[y][x])) {
63 				win->_insmode = TRUE;
64 				if (_mbvalid(win) == ERR)
65 					return (ERR);
66 				x = win->_curx;
67 			}
68 			if (ISMBIT(win->_y[y][maxx - 1])) {
69 				for (cx = maxx - 1; cx >= x; --cx)
70 					if (!ISCBIT(win->_y[y][cx]))
71 						break;
72 				wc = RBYTE(win->_y[y][cx]);
73 				if (cx + _curs_scrwidth[TYPE(wc)] > maxx)
74 					maxx = cx - 1;
75 			}
76 		}
77 	}
78 
79 	memSset(&win->_y[y][x], win->_bkgd, maxx - x);
80 	maxx = win->_maxx;
81 
82 #ifdef	_VR3_COMPAT_CODE
83 	if (_y16update)
84 		(*_y16update)(win, 1, maxx - x, y, x);
85 #endif	/* _VR3_COMPAT_CODE */
86 
87 	/* if curscr, reset blank structure */
88 	if (win == curscr) {
89 		if (_BEGNS[y] >= x)
90 			/* LINTED */
91 			_BEGNS[y] = (short) maxx;
92 		if (_ENDNS[y] >= x)
93 			_ENDNS[y] = _BEGNS[y] > x ? -1 : x-1;
94 
95 		_CURHASH[y] = x == 0 ? 0 : _NOHASH;
96 
97 		if (_MARKS != NULL) {
98 			char	*mkp = _MARKS[y];
99 			int	endx = COLS /
100 				BITSPERBYTE + (COLS  %BITSPERBYTE ? 1 : 0);
101 			int	m = x / BITSPERBYTE + 1;
102 
103 			for (; m < endx; ++m)
104 				mkp[m] = 0;
105 			mkp += x / BITSPERBYTE;
106 			if ((m = x % BITSPERBYTE) == 0)
107 				*mkp = 0;
108 			else
109 				for (; m < BITSPERBYTE; ++m)
110 					*mkp &= ~(1 << m);
111 
112 			/* if color terminal, do the same for color marks */
113 
114 			if (_COLOR_MARKS != NULL) {
115 				mkp = _COLOR_MARKS[y];
116 
117 				m = x / BITSPERBYTE + 1;
118 				for (; m < endx; ++m)
119 					mkp[m] = 0;
120 				mkp += x / BITSPERBYTE;
121 				if ((m = x % BITSPERBYTE) == 0)
122 					*mkp = 0;
123 				else
124 					for (; m < BITSPERBYTE; ++m)
125 						*mkp &= ~(1 << m);
126 			}
127 		}
128 		return (OK);
129 	} else {
130 		/* update firstch and lastch for the line. */
131 #ifdef	DEBUG
132 	if (outf)
133 		fprintf(outf, "CLRTOEOL: line %d begx = %d, maxx = %d, "
134 		    "lastch = %d, next firstch %d\n", y, win->_begx,
135 		    win->_firstch[y], win->_lastch[y], win->_firstch[y+1]);
136 #endif	/* DEBUG */
137 
138 		if (win->_firstch[y] > x)
139 		    /* LINTED */
140 		    win->_firstch[y] = (short) x;
141 		win->_lastch[y] = maxx - 1;
142 		win->_flags |= _WINCHANGED;
143 		/* sync with ancestors structures */
144 		if (win->_sync)
145 			wsyncup(win);
146 
147 		return (win->_immed ? wrefresh(win) : OK);
148 	}
149 }
150