xref: /illumos-gate/usr/src/lib/libxcurses2/src/libc/xcurses/vwprintw.c (revision 581cede61ac9c14d8d4ea452562a567189eead78)
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  * vwprintw.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[] = "$Header: /rd/src/libc/xcurses/rcs/vwprintw.c 1.2 "
43 "1995/08/30 19:39:01 danv Exp $";
44 #endif
45 #endif
46 
47 #include <private.h>
48 
49 #undef va_start
50 #undef va_end
51 #undef va_arg
52 
53 #include <stdarg.h>
54 
55 int
56 vwprintw(WINDOW *w, char *fmt, va_list ap)
57 {
58 	int	size = BUFSIZ;
59 	char	*buffer;
60 	int	n, rv;
61 
62 	buffer = (char *)malloc(size);
63 	if (buffer == NULL)
64 		return (ERR);
65 
66 	/* CONSTCOND */
67 	while (1) {
68 		n = vsnprintf(buffer, size, fmt, ap);
69 		if (n < size)
70 			break;
71 		size *= 2;
72 		buffer = (char *)realloc(buffer, size);
73 		if (buffer == NULL)
74 			return (ERR);
75 	}
76 	va_end(ap);
77 	rv = waddnstr(w, buffer, -1);
78 	free(buffer);
79 	return (rv);
80 }
81