1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2010 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 27 setvbuf(Sfio_t* f, char* buf, int type, size_t size) 28 { 29 STDIO_INT(f, "setvbuf", int, (Sfio_t*, char*, int, size_t), (f, buf, type, size)) 30 31 if (type == _IOLBF) 32 sfset(f, SF_LINE, 1); 33 else if (f->flags & SF_STRING) 34 return -1; 35 else if (type == _IONBF) 36 { 37 sfsync(f); 38 sfsetbuf(f, NiL, 0); 39 } 40 else if (type == _IOFBF) 41 { 42 if (size == 0) 43 size = SF_BUFSIZE; 44 sfsync(f); 45 sfsetbuf(f, (Void_t*)buf, size); 46 } 47 return 0; 48 } 49