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/* simplified linux __ffillbuf.c
Copyright (C) 1995 Joel N. Weber II
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
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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <unistd.h>
#include "stdio.h"
/* this function makes the mistake of assuming the buffer really DOES
need to be filled. */
/* RDB:
* Added simple processing for EOF and errors
* As this is _only_ called from getc() the memory footprint is smaller
* if it pretends to be getc in the complex case.
*/
int
__ffillbuf(stream)
FILE *stream;
{
int stat;
if( stream->fd < 0 || ferror(stream) ) return EOF;
stat = read(stream->fd, (char *) stream->bufstart, stream->bufend - stream->bufstart);
if( stat > 0 )
stream->bufread = stream->bufstart + stat;
else if( stat == 0 )
{
stream->fc_eof = 1;
return EOF;
}
else
{
stream->fc_err = 1;
return EOF;
}
stream->bufpos = stream->bufstart;
return getc(stream);
}
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