+
−/* Retrieve information about a FILE stream.
+
−   Copyright (C) 2007-2011 Free Software Foundation, Inc.
+
−
+
−   This program is free software: you can redistribute it and/or modify
+
−   it under the terms of the GNU General Public License as published by
+
−   the Free Software Foundation; either version 3 of the License, or
+
−   (at your option) any later version.
+
−
+
−   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.  If not, see <http://www.gnu.org/licenses/>.  */
+
−
+
−#include <config.h>
+
−
+
−/* Specification.  */
+
−#include "freadable.h"
+
−
+
−#include "stdio-impl.h"
+
−
+
−bool
+
−freadable (FILE *fp)
+
−{
+
−  /* Most systems provide FILE as a struct and the necessary bitmask in
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−     <stdio.h>, because they need it for implementing getc() and putc() as
+
−     fast macros.  */
+
−#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+
−  return (fp->_flags & _IO_NO_READS) == 0;
+
−#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+
−  return (fp_->_flags & (__SRW | __SRD)) != 0;
+
−#elif defined __EMX__               /* emx+gcc */
+
−  return (fp->_flags & (_IORW | _IOREAD)) != 0;
+
−#elif defined __minix               /* Minix */
+
−  return (fp->_flags & _IOREAD) != 0;
+
−#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
+
−  return (fp->_flag & (_IORW | _IOREAD)) != 0;
+
−#elif defined __QNX__               /* QNX */
+
−  return (fp->_Mode & 0x1 /* _MOPENR */) != 0;
+
−#elif defined __MINT__              /* Atari FreeMiNT */
+
−  return fp->__mode.__read;
+
−#else
+
−# error "Please port gnulib freadable.c to your platform! Look at the definition of fopen, fdopen on your system, then report this to bug-gnulib."
+
−#endif
+
−}