1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html *
11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12da2e3ebdSchin * *
13da2e3ebdSchin * Information and Software Systems Research *
14da2e3ebdSchin * AT&T Research *
15da2e3ebdSchin * Florham Park NJ *
16da2e3ebdSchin * *
17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> *
18da2e3ebdSchin * David Korn <dgk@research.att.com> *
19da2e3ebdSchin * Phong Vo <kpv@research.att.com> *
20da2e3ebdSchin * *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin
24da2e3ebdSchin #include "stdhdr.h"
25da2e3ebdSchin
26da2e3ebdSchin int
vsnprintf(char * s,int n,const char * form,va_list args)27*b30d1939SAndy Fiddaman vsnprintf(char* s, int n, const char* form, va_list args)
28da2e3ebdSchin {
29*b30d1939SAndy Fiddaman Sfio_t* f;
30*b30d1939SAndy Fiddaman ssize_t rv;
31da2e3ebdSchin
32*b30d1939SAndy Fiddaman /* make a temp stream */
33*b30d1939SAndy Fiddaman if(!(f = sfnew(NIL(Sfio_t*),NIL(char*),(size_t)SF_UNBOUND,
34*b30d1939SAndy Fiddaman -1,SF_WRITE|SF_STRING)) )
35da2e3ebdSchin return -1;
36*b30d1939SAndy Fiddaman
37*b30d1939SAndy Fiddaman if((rv = sfvprintf(f,form,args)) >= 0 )
38*b30d1939SAndy Fiddaman { if(s && n > 0)
39*b30d1939SAndy Fiddaman { if((rv+1) >= n)
40*b30d1939SAndy Fiddaman n--;
41*b30d1939SAndy Fiddaman else
42*b30d1939SAndy Fiddaman n = rv;
43*b30d1939SAndy Fiddaman memcpy(s, f->data, n);
44*b30d1939SAndy Fiddaman s[n] = 0;
45*b30d1939SAndy Fiddaman }
46*b30d1939SAndy Fiddaman _Sfi = rv;
47da2e3ebdSchin }
48*b30d1939SAndy Fiddaman
49*b30d1939SAndy Fiddaman sfclose(f);
50*b30d1939SAndy Fiddaman
51*b30d1939SAndy Fiddaman return rv;
52da2e3ebdSchin }
53