win_wchn.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
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 (c) 1995-1998 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/* LINTLIBRARY */
30
31/*
32 * win_wchn.c
33 *
34 * XCurses Library
35 *
36 * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
37 *
38 */
39
40#if M_RCSID
41#ifndef lint
42static char rcsID[] =
43"$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
44"libxcurses/src/libc/xcurses/rcs/win_wchn.c 1.2 1998/05/22 17:57:05 "
45"cbates Exp $";
46#endif
47#endif
48
49#include <private.h>
50
51int
52win_wchnstr(WINDOW *w, cchar_t *ccs, int n)
53{
54	int	x, eol;
55	cchar_t	null = { 0 };
56
57	eol = (n < 0 || w->_maxx < w->_curx + n) ? w->_maxx : w->_curx + n;
58
59	for (x = w->_curx; x < eol; ++ccs) {
60		*ccs = w->_line[w->_cury][x];
61		ccs->_f = 1;
62
63		x = __m_cc_next(w, w->_cury, x);
64	}
65
66	/*
67	 * For an unbounded buffer or a buffer with room remaining,
68	 * null terminate the buffer.
69	 */
70	if (n < 0 || eol < w->_curx + n) {
71		*ccs = null;
72	}
73
74	return (OK);
75}
76