mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-28 07:45:00 +00:00
a0202fdc85
This incorporates: 2017-09-13 all: prefer https: URLs This just changes http: to https: in comments, in files copied from Gnulib.
59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
/* fpending.c -- return the number of pending output bytes on a stream
|
|
Copyright (C) 2000, 2004, 2006-2007, 2009-2017 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 <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Jim Meyering. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include "fpending.h"
|
|
|
|
#include "stdio-impl.h"
|
|
|
|
/* Return the number of pending (aka buffered, unflushed)
|
|
bytes on the stream, FP, that is open for writing. */
|
|
size_t
|
|
__fpending (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_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
|
|
return fp->_IO_write_ptr - fp->_IO_write_base;
|
|
#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
|
|
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
|
|
return fp->_p - fp->_bf._base;
|
|
#elif defined __EMX__ /* emx+gcc */
|
|
return fp->_ptr - fp->_buffer;
|
|
#elif defined __minix /* Minix */
|
|
return fp_->_ptr - fp_->_buf;
|
|
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, MSVC, NonStop Kernel, OpenVMS */
|
|
return (fp_->_ptr ? fp_->_ptr - fp_->_base : 0);
|
|
#elif defined __UCLIBC__ /* uClibc */
|
|
return (fp->__modeflags & __FLAG_WRITING ? fp->__bufpos - fp->__bufstart : 0);
|
|
#elif defined __QNX__ /* QNX */
|
|
return (fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0);
|
|
#elif defined __MINT__ /* Atari FreeMiNT */
|
|
return fp->__bufp - fp->__buffer;
|
|
#elif defined EPLAN9 /* Plan9 */
|
|
return fp->wp - fp->buf;
|
|
#else
|
|
# error "Please port gnulib fpending.c to your platform!"
|
|
return 1;
|
|
#endif
|
|
}
|