diff options
Diffstat (limited to 'librols/stdio/peekc.c')
-rw-r--r-- | librols/stdio/peekc.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/librols/stdio/peekc.c b/librols/stdio/peekc.c new file mode 100644 index 0000000..ce98557 --- /dev/null +++ b/librols/stdio/peekc.c @@ -0,0 +1,47 @@ +/* + * This file has been modified for the cdrkit suite. + * + * The behaviour and appearence of the program code below can differ to a major + * extent from the version distributed by the original author(s). + * + * For details, see Changelog file distributed with the cdrkit package. If you + * received this file from another source then ask the distributing person for + * a log of modifications. + * + */ + +/* @(#)peekc.c 1.7 04/08/08 Copyright 1986, 1996-2003 J. Schilling */ +/* + * Copyright (c) 1986, 1996-2003 J. Schilling + */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "schilyio.h" + +EXPORT int +peekc(f) + FILE *f; +{ + int c; + + down2(f, _IOREAD, _IORW); + + if (ferror(f)) + return (EOF); + if ((c = getc(f)) != EOF) + ungetc(c, f); + return (c); +} |