mirror of
https://github.com/autc04/Retro68.git
synced 2024-08-28 19:29:05 +00:00
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
/*
|
|
Modified copy of setbuf.c to support the setbuffer function
|
|
defined as part of BSD.
|
|
Modifications by Gareth Pearce, 2001.
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<setbuffer>>---specify full buffering for a file or stream with size
|
|
|
|
INDEX
|
|
setbuffer
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdio.h>
|
|
void setbuffer(FILE *<[fp]>, char *<[buf]>, int <[size]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdio.h>
|
|
void setbuffer(<[fp]>, <[buf]>, <[size]>)
|
|
FILE *<[fp]>;
|
|
char *<[buf]>;
|
|
int <[size]>;
|
|
|
|
DESCRIPTION
|
|
<<setbuffer>> specifies that output to the file or stream identified by
|
|
<[fp]> should be fully buffered. All output for this file will go to a
|
|
buffer (of size <[size]>). Output will be passed on to the host system
|
|
only when the buffer is full, or when an input operation intervenes.
|
|
|
|
You may, if you wish, supply your own buffer by passing a pointer to
|
|
it as the argument <[buf]>. It must have size <[size]>. You can
|
|
also use <<NULL>> as the value of <[buf]>, to signal that the
|
|
<<setbuffer>> function is to allocate the buffer.
|
|
|
|
WARNINGS
|
|
You may only use <<setbuffer>> before performing any file operation
|
|
other than opening the file.
|
|
|
|
If you supply a non-null <[buf]>, you must ensure that the associated
|
|
storage continues to be available until you close the stream
|
|
identified by <[fp]>.
|
|
|
|
RETURNS
|
|
<<setbuffer>> does not return a result.
|
|
|
|
PORTABILITY
|
|
This function comes from BSD not ANSI or POSIX.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
#include <stdio.h>
|
|
#include "local.h"
|
|
|
|
_VOID
|
|
_DEFUN(setbuffer, (fp, buf, size),
|
|
FILE * fp _AND
|
|
char *buf _AND
|
|
int size)
|
|
{
|
|
_CAST_VOID setvbuf (fp, buf, buf ? _IOFBF : _IONBF, (size_t) size);
|
|
}
|