winchn.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 * winchn.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[] = "$Header: /rd/src/libc/xcurses/rcs/winchn.c 1.1 "
43"1995/06/13 20:54:33 ant Exp $";
44#endif
45#endif
46
47#include <private.h>
48
49int
50winchnstr(WINDOW *w, chtype *chs, int n)
51{
52	int	x, eol;
53	cchar_t	*cp;
54
55	eol = (n < 0 || w->_maxx < w->_curx + n) ? w->_maxx : w->_curx + n;
56
57	for (cp = w->_line[w->_cury], x = w->_curx; x < eol; ++x, ++chs) {
58		if ((*chs = __m_cc_chtype(&cp[x])) == (chtype) ERR)
59			return (ERR);
60	}
61
62	/*
63	 * For an unbounded buffer or a buffer with room remaining,
64	 * null terminate the buffer.
65	 */
66	if (n < 0 || eol < w->_curx + n)
67		*chs = 0;
68
69	return (OK);
70}
71