1 /* @(#)peekc.c 1.7 04/08/08 Copyright 1986, 1996-2003 J. Schilling */ 2 /* 3 * Copyright (c) 1986, 1996-2003 J. Schilling 4 */ 5 /* 6 * The contents of this file are subject to the terms of the 7 * Common Development and Distribution License, Version 1.0 only 8 * (the "License"). You may not use this file except in compliance 9 * with the License. 10 * 11 * See the file CDDL.Schily.txt in this distribution for details. 12 * A copy of the CDDL is also available via the Internet at 13 * http://www.opensource.org/licenses/cddl1.txt 14 * 15 * When distributing Covered Code, include this CDDL HEADER in each 16 * file and include the License file CDDL.Schily.txt from this distribution. 17 */ 18 19 #include "schilyio.h" 20 21 EXPORT int peekc(f)22peekc(f) 23 FILE *f; 24 { 25 int c; 26 27 down2(f, _IOREAD, _IORW); 28 29 if (ferror(f)) 30 return (EOF); 31 if ((c = getc(f)) != EOF) 32 ungetc(c, f); 33 return (c); 34 } 35