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, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * win_wchn.c
31 *
32 * XCurses Library
33 *
34 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
35 *
36 */
37
38 #if M_RCSID
39 #ifndef lint
40 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/win_wchn.c 1.1 1995/06/14 15:26:05 ant Exp $";
41 #endif
42 #endif
43
44 #include <private.h>
45
46 int
win_wchnstr(w,ccs,n)47 win_wchnstr(w, ccs, n)
48 WINDOW *w;
49 cchar_t *ccs;
50 int n;
51 {
52 int x, eol;
53 cchar_t *cp, null = { 0 };
54
55 #ifdef M_CURSES_TRACE
56 __m_trace("win_wchnstr(%p, %p, %d)", w, ccs, n);
57 #endif
58
59 eol = (n < 0 || w->_maxx < w->_curx + n) ? w->_maxx : w->_curx + n;
60
61 for (cp = w->_line[w->_cury], x = w->_curx; x < eol; ++ccs) {
62 *ccs = *cp;
63 ccs->_f = 1;
64
65 x = __m_cc_next(w, w->_cury, x);
66 }
67
68 /* For an unbounded buffer or a buffer with room remaining,
69 * null terminate the buffer.
70 */
71 if (n < 0 || eol < w->_curx + n)
72 *ccs = null;
73
74 return __m_return_code("win_wchnstr", OK);
75 }
76