libc/stdio/__fpending.c

   1 /* Copyright (C) 2004       Manuel Novoa III    <mjn3@codepoet.org>
   2  *
   3  * GNU Library General Public License (LGPL) version 2 or later.
   4  *
   5  * Dedicated to Toni.  See uClibc/DEDICATION.mjn3 for details.
   6  */
   7
   8 #include "_stdio.h"
   9 #include <stdio_ext.h>
  10
  11 /* Solaris function --
  12  * Returns the number of bytes in the buffer for a writing stream.
  13  *
  14  * NOTE: GLIBC DIFFERENCE!!!
  15  *
  16  * glibc will return the number of wide chars pending for wide oriented
  17  * streams.  We always return the number of bytes in the buffer, as we
  18  * convert wide chars to their multibyte encodings and buffer _those_.
  19  */
  20
  21 size_t __fpending(register FILE * __restrict stream)
  22 {
  23         __STDIO_STREAM_VALIDATE(stream);
  24
  25         return (__STDIO_STREAM_IS_WRITING(stream))
  26                 ? __STDIO_STREAM_BUFFER_WUSED(stream)
  27                 : 0;
  28 }