vwprintw.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
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
42static 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
55int
56vwprintw(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