14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*8462SApril.Chin@Sun.COM * Copyright (c) 1985-2008 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 7*8462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin 244887Schin #include "stdhdr.h" 254887Schin 264887Schin int 274887Schin vsnprintf(char* s, int n, const char* fmt, va_list args) 284887Schin { 294887Schin Sfio_t f; 304887Schin int v; 314887Schin 324887Schin if (!s) 334887Schin return -1; 344887Schin 354887Schin /* 364887Schin * make a fake stream 374887Schin */ 384887Schin 394887Schin SFCLEAR(&f, NiL); 404887Schin f.flags = SF_STRING|SF_WRITE; 414887Schin f.bits = SF_PRIVATE; 424887Schin f.mode = SF_WRITE; 434887Schin f.size = n - 1; 444887Schin f.data = f.next = f.endr = (uchar*)s; 454887Schin f.endb = f.endw = f.data + f.size; 464887Schin 474887Schin /* 484887Schin * call and fix up 494887Schin */ 504887Schin 514887Schin v = sfvprintf(&f, fmt, args); 524887Schin *f.next = 0; 534887Schin _Sfi = f.next - f.data; 544887Schin return v; 554887Schin } 56