xref: /illumos-gate/usr/src/lib/libxcurses2/src/libc/xcurses/vwprintw.c (revision 1edba515a3484e0f74b638b203d462b3112ac84d)
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 /* LINTLIBRARY */
28 
29 /*
30  * vwprintw.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/vwprintw.c 1.2 "
41 "1995/08/30 19:39:01 danv Exp $";
42 #endif
43 #endif
44 
45 #include <private.h>
46 
47 #undef va_start
48 #undef va_end
49 #undef va_arg
50 
51 #include <stdarg.h>
52 
53 int
54 vwprintw(WINDOW *w, char *fmt, va_list ap)
55 {
56 	int	size = BUFSIZ;
57 	char	*buffer;
58 	int	n, rv;
59 
60 	buffer = (char *)malloc(size);
61 	if (buffer == NULL)
62 		return (ERR);
63 
64 	/* CONSTCOND */
65 	while (1) {
66 		n = vsnprintf(buffer, size, fmt, ap);
67 		if (n < size)
68 			break;
69 		size *= 2;
70 		buffer = (char *)realloc(buffer, size);
71 		if (buffer == NULL)
72 			return (ERR);
73 	}
74 	va_end(ap);
75 	rv = waddnstr(w, buffer, -1);
76 	free(buffer);
77 	return (rv);
78 }
79