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https://https.git.savannah.gnu.org/git/gnulib.git
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Eric Blake
75fb803d0d
* Makefile (sc_cpp_indent_check): Add my name. * lib/fbufmode.c: Filter through cppi. * lib/fpurge.c: Likewise. * lib/freadable.c: Likewise. * lib/freading.c: Likewise. * lib/fwritable.c: Likewise. * lib/fwriting.c: Likewise. * lib/sigaction.c: Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
46 lines
1.9 KiB
C
46 lines
1.9 KiB
C
/* Retrieve information about a FILE stream.
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Copyright (C) 2007-2011 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include "freadable.h"
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#include "stdio-impl.h"
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bool
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freadable (FILE *fp)
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{
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/* 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
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fast macros. */
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#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
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return (fp->_flags & _IO_NO_READS) == 0;
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#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
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return (fp_->_flags & (__SRW | __SRD)) != 0;
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#elif defined __EMX__ /* emx+gcc */
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return (fp->_flags & (_IORW | _IOREAD)) != 0;
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#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
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return (fp->_flag & (_IORW | _IOREAD)) != 0;
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#elif defined __QNX__ /* QNX */
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return (fp->_Mode & 0x1 /* _MOPENR */) != 0;
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#elif defined __MINT__ /* Atari FreeMiNT */
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return fp->__mode.__read;
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#else
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# 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."
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#endif
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}
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