117 lines
2.2 KiB
C
117 lines
2.2 KiB
C
/***************************************************************************
|
|
|
|
gbx_stream_null.c
|
|
|
|
(c) 2000-2019 Benoît Minisini <benoit.minisini@gambas-basic.org>
|
|
|
|
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.
|
|
|
|
***************************************************************************/
|
|
|
|
#define __STREAM_IMPL_C
|
|
|
|
#include "gb_common.h"
|
|
#include "gbx_stream.h"
|
|
|
|
|
|
static int stream_open(STREAM *stream, const char *path, int mode)
|
|
{
|
|
stream->null.pos = 0;
|
|
stream->common.available_now = TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_close(STREAM *stream)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_read(STREAM *stream, char *buffer, int len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int stream_write(STREAM *stream, char *buffer, int len)
|
|
{
|
|
stream->null.pos += len;
|
|
return len;
|
|
}
|
|
|
|
static int stream_seek(STREAM *stream, int64_t pos, int whence)
|
|
{
|
|
int64_t new_pos;
|
|
|
|
switch(whence)
|
|
{
|
|
case SEEK_SET:
|
|
new_pos = pos;
|
|
break;
|
|
|
|
case SEEK_CUR:
|
|
new_pos = stream->null.pos + pos;
|
|
break;
|
|
|
|
case SEEK_END:
|
|
return TRUE;
|
|
|
|
default:
|
|
return TRUE;
|
|
}
|
|
|
|
if (new_pos < 0)
|
|
return TRUE;
|
|
|
|
stream->null.pos = new_pos;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_tell(STREAM *stream, int64_t *pos)
|
|
{
|
|
*pos = (int64_t)stream->null.pos;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_flush(STREAM *stream)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_eof(STREAM *stream)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static int stream_lof(STREAM *stream, int64_t *len)
|
|
{
|
|
*len = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static int stream_handle(STREAM *stream)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
DECLARE_STREAM(STREAM_null);
|