diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | lib/fbufmode.c | 64 | ||||
| -rw-r--r-- | lib/fbufmode.h | 37 | ||||
| -rw-r--r-- | m4/fbufmode.m4 | 11 | ||||
| -rw-r--r-- | modules/fbufmode | 25 |
5 files changed, 144 insertions, 0 deletions
@@ -1,5 +1,12 @@ 2007-04-13 Bruno Haible <bruno@clisp.org> + * modules/fbufmode: New file. + * lib/fbufmode.h: New file. + * lib/fbufmode.c: New file. + * m4/fbufmode.m4: New file. + +2007-04-13 Bruno Haible <bruno@clisp.org> + * modules/fwritable-tests: New file. * tests/test-fwritable.c: New file. diff --git a/lib/fbufmode.c b/lib/fbufmode.c new file mode 100644 index 0000000000..3090d8f9cf --- /dev/null +++ b/lib/fbufmode.c @@ -0,0 +1,64 @@ +/* Retrieve information about a FILE stream. + Copyright (C) 2007 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include <config.h> + +/* Specification. */ +#include "fbufmode.h" + +#if HAVE___FLBF +# include <stdio_ext.h> +#endif + +int +fbufmode (FILE *fp) +{ + /* Most systems provide FILE as a struct and the necessary bitmask in + <stdio.h>, because they need it for implementing getc() and putc() as + fast macros. */ +#if defined _IO_ferror_unlocked /* GNU libc, BeOS */ +# if HAVE___FLBF /* glibc >= 2.2 */ + if (__flbf (fp)) + return _IOLBF; +# else + if (fp->_flags & _IO_LINE_BUF) + return _IOLBF; +# endif + if (fp->_flags & _IO_UNBUFFERED) + return _IONBF; + return _IOFBF; +#elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */ + if (fp->_flags & __SLBF) + return _IOLBF; + if (fp->_flags & __SNBF) + return _IONBF; + return _IOFBF; +#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */ +# if HAVE___FLBF /* Solaris >= 7 */ + if (__flbf (fp)) + return _IOLBF; +# else + if (fp->_flag & _IOLBF) + return _IOLBF; +# endif + if (fp->_flag & _IONBF) + return _IONBF; + return _IOFBF; +#else + #error "Please port gnulib fbufmode.c to your platform! Look at the setvbuf implementation." +#endif +} diff --git a/lib/fbufmode.h b/lib/fbufmode.h new file mode 100644 index 0000000000..c309ed4116 --- /dev/null +++ b/lib/fbufmode.h @@ -0,0 +1,37 @@ +/* Retrieve information about a FILE stream. + Copyright (C) 2007 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include <stdio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Return the buffering mode of the stream STREAM. + + Result means + ------ ------- + _IONBF unbuffered + _IOLBF line buffered + _IOFBF fully buffered + + STREAM must not be wide-character oriented. */ +extern int fbufmode (FILE *stream); + +#ifdef __cplusplus +} +#endif diff --git a/m4/fbufmode.m4 b/m4/fbufmode.m4 new file mode 100644 index 0000000000..a0e7042a38 --- /dev/null +++ b/m4/fbufmode.m4 @@ -0,0 +1,11 @@ +# fbufmode.m4 serial 1 +dnl Copyright (C) 2007 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_FBUFMODE], +[ + dnl Prerequisites of lib/fbufmode.c. + AC_CHECK_FUNCS_ONCE([__flbf]) +]) diff --git a/modules/fbufmode b/modules/fbufmode new file mode 100644 index 0000000000..2d054b4362 --- /dev/null +++ b/modules/fbufmode @@ -0,0 +1,25 @@ +Description: +fbufmode() function: Determine the buffering mode of a FILE stream. + +Files: +lib/fbufmode.h +lib/fbufmode.c +m4/fbufmode.m4 + +Depends-on: + +configure.ac: +gl_FUNC_FBUFMODE + +Makefile.am: +lib_SOURCES += fbufmode.c + +Include: +"fbufmode.h" + +License: +LGPL + +Maintainer: +Bruno Haible, Eric Blake + |