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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2011 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include "stdhdr.h"
int
vswprintf(wchar_t* s, size_t n, const wchar_t* fmt, va_list args)
{
Sfio_t f;
int v;
if (!s)
return -1;
/*
* make a fake stream
*/
SFCLEAR(&f, NiL);
f.flags = SF_STRING|SF_WRITE;
f.bits = SF_PRIVATE;
f.mode = SF_WRITE;
f.size = n - 1;
f.data = f.next = f.endr = (uchar*)s;
f.endb = f.endw = f.data + f.size;
/*
* call and adjust
*/
v = vfwprintf(&f, fmt, args);
*f.next = 0;
_Sfi = f.next - f.data;
return v;
}
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