xref: /illumos-gate/usr/src/contrib/ast/src/lib/libast/stdio/vfwprintf.c (revision b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 
24 #include "stdhdr.h"
25 
26 int
vfwprintf(Sfio_t * f,const wchar_t * fmt,va_list args)27 vfwprintf(Sfio_t* f, const wchar_t* fmt, va_list args)
28 {
29 	char*	m;
30 	char*	x;
31 	wchar_t*w;
32 	size_t	n;
33 	int	v;
34 	Sfio_t*	t;
35 
36 	STDIO_INT(f, "vfwprintf", int, (Sfio_t*, const wchar_t*, va_list), (f, fmt, args))
37 
38 	FWIDE(f, WEOF);
39 	n = wcstombs(NiL, fmt, 0);
40 	if (m = malloc(n + 1))
41 	{
42 		if (t = sfstropen())
43 		{
44 			wcstombs(m, fmt, n + 1);
45 			sfvprintf(t, m, args);
46 			free(m);
47 			if (!(x = sfstruse(t)))
48 				v = -1;
49 			else
50 			{
51 				n = mbstowcs(NiL, x, 0);
52 				if (w = (wchar_t*)sfreserve(f, n * sizeof(wchar_t) + 1, 0))
53 					v = mbstowcs(w, x, n + 1);
54 				else
55 					v = -1;
56 			}
57 			sfstrclose(t);
58 		}
59 		else
60 		{
61 			free(m);
62 			v = -1;
63 		}
64 	}
65 	else
66 		v = -1;
67 	return v;
68 }
69