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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
vsnprintf(char* s, int n, const char* form, va_list args)
{
Sfio_t* f;
ssize_t rv;
/* make a temp stream */
if(!(f = sfnew(NIL(Sfio_t*),NIL(char*),(size_t)SF_UNBOUND,
-1,SF_WRITE|SF_STRING)) )
return -1;
if((rv = sfvprintf(f,form,args)) >= 0 )
{ if(s && n > 0)
{ if((rv+1) >= n)
n--;
else
n = rv;
memcpy(s, f->data, n);
s[n] = 0;
}
_Sfi = rv;
}
sfclose(f);
return rv;
}
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