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