wsprintf.c revision 1219:f89f56c2d9ac 
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/*
24 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28#pragma ident	"%Z%%M%	%I%	%E% SMI"
29
30/*	Copyright (c) 1986 AT&T	*/
31/*	  All Rights Reserved  	*/
32
33
34#include "synonyms.h"
35#include <stdio.h>
36#include <stdarg.h>
37#include <stdlib.h>
38#include <widec.h>
39#include <string.h>
40#include <limits.h>
41
42/*
43 * 	wsprintf -- this function will output a wchar_t string
44 *		    according to the conversion format.
45 *		    Note that the maximum length of the output
46 *		    string is 1024 bytes.
47 */
48
49/*VARARGS2*/
50int
51wsprintf(wchar_t *wstring, const char *format, ...)
52{
53	va_list	ap;
54	char	tempstring[1024];
55	char *p2;
56	size_t len;
57	int malloced = 0;
58	char *p1 = (char *)wstring;
59	int retcode;
60	int	i;
61
62	va_start(ap, format);
63	if (vsprintf(p1, format, ap) == -1) {
64		va_end(ap);
65		return (-1);
66	}
67	va_end(ap);
68	len = strlen(p1) + 1;
69	if (len > 1024) {
70		p2 = malloc(len);
71		if (p2 == NULL)
72			return (-1);
73		malloced = 1;
74	} else
75		p2 = tempstring;
76	(void) strcpy(p2, p1);
77
78	if (mbstowcs(wstring, p2, len) == (size_t)-1) {
79		for (i = 0; i < len; i++) {
80			if ((retcode = mbtowc(wstring, p2, MB_CUR_MAX)) == -1) {
81				*wstring = (wchar_t)*p2 & 0xff;
82				p2++;
83			} else {
84				p2 += retcode;
85			}
86			if (*wstring++ == (wchar_t)0) {
87				break;
88			}
89		}
90	}
91
92	if (malloced == 1)
93		free(p2);
94	len = wcslen(wstring);
95	if (len <= INT_MAX)
96		return ((int)len);
97	else
98		return (EOF);
99}
100