xref: /titanic_41/usr/src/lib/libxcurses2/src/libc/xcurses/winnwstr.c (revision 74e20cfe817b82802b16fac8690dadcda76f54f5)
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  * winnwstr.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
42 static char rcsID[] =
43 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
44 "libxcurses/src/libc/xcurses/rcs/winnwstr.c 1.4 1998/05/27 19:20:06 "
45 "cbates Exp $";
46 #endif
47 #endif
48 
49 #include <private.h>
50 
51 int
52 winnwstr(WINDOW *w, wchar_t *wcs, int n)
53 {
54 	int	i, y, x;
55 	int	j = 0;
56 	cchar_t	*cp;
57 
58 	if (n < 0)
59 		n = w->_maxx;
60 
61 	for (x = w->_curx; x < w->_maxx && 0 < n; n -= i) {
62 		cp = &w->_line[y = w->_cury][x];
63 
64 		/* Will entire character fit into buffer? */
65 		if (n < cp->_n)
66 			break;
67 
68 		/* Copy only the character portion. */
69 		for (i = 0; i < cp->_n; ++i) {
70 			*wcs++ = cp->_wc[i];
71 			j++;
72 		}
73 
74 		x = __m_cc_next(w, y, x);
75 	}
76 
77 	/* Enough room to null terminate the buffer? */
78 	if (0 < n)
79 		*wcs = '\0';
80 
81 	return (j);
82 }
83