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