2007-02-01 06:18:17 +00:00
|
|
|
/*-
|
|
|
|
* Copyright (c) 2003-2007 Tim Kientzle
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
|
|
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
|
|
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "archive_platform.h"
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
|
|
|
#include "archive.h"
|
|
|
|
#include "archive_entry.h"
|
|
|
|
#include "archive_private.h"
|
2007-03-03 07:37:37 +00:00
|
|
|
#include "archive_read_private.h"
|
2007-02-01 06:18:17 +00:00
|
|
|
|
2007-03-03 07:37:37 +00:00
|
|
|
static int archive_read_format_empty_bid(struct archive_read *);
|
|
|
|
static int archive_read_format_empty_read_data(struct archive_read *,
|
2007-02-01 06:18:17 +00:00
|
|
|
const void **, size_t *, off_t *);
|
2007-03-03 07:37:37 +00:00
|
|
|
static int archive_read_format_empty_read_header(struct archive_read *,
|
2007-02-01 06:18:17 +00:00
|
|
|
struct archive_entry *);
|
|
|
|
int
|
2007-03-03 07:37:37 +00:00
|
|
|
archive_read_support_format_empty(struct archive *_a)
|
2007-02-01 06:18:17 +00:00
|
|
|
{
|
2007-03-03 07:37:37 +00:00
|
|
|
struct archive_read *a = (struct archive_read *)_a;
|
2007-02-01 06:18:17 +00:00
|
|
|
int r;
|
|
|
|
|
|
|
|
r = __archive_read_register_format(a,
|
2009-03-06 05:58:56 +00:00
|
|
|
NULL,
|
2007-02-01 06:18:17 +00:00
|
|
|
NULL,
|
|
|
|
archive_read_format_empty_bid,
|
2009-03-06 05:58:56 +00:00
|
|
|
NULL,
|
2007-02-01 06:18:17 +00:00
|
|
|
archive_read_format_empty_read_header,
|
|
|
|
archive_read_format_empty_read_data,
|
|
|
|
NULL,
|
|
|
|
NULL);
|
|
|
|
|
|
|
|
return (r);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
2007-03-03 07:37:37 +00:00
|
|
|
archive_read_format_empty_bid(struct archive_read *a)
|
2007-02-01 06:18:17 +00:00
|
|
|
{
|
2009-04-12 04:45:40 +00:00
|
|
|
ssize_t avail;
|
2007-02-01 06:18:17 +00:00
|
|
|
|
2009-04-26 18:24:14 +00:00
|
|
|
(void)__archive_read_ahead(a, 1, &avail);
|
2009-04-17 01:00:11 +00:00
|
|
|
if (avail != 0)
|
|
|
|
return (-1);
|
|
|
|
return (1);
|
2007-02-01 06:18:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2007-03-03 07:37:37 +00:00
|
|
|
archive_read_format_empty_read_header(struct archive_read *a,
|
2007-02-01 06:18:17 +00:00
|
|
|
struct archive_entry *entry)
|
|
|
|
{
|
|
|
|
(void)a; /* UNUSED */
|
|
|
|
(void)entry; /* UNUSED */
|
|
|
|
|
2007-03-03 07:37:37 +00:00
|
|
|
a->archive.archive_format = ARCHIVE_FORMAT_EMPTY;
|
|
|
|
a->archive.archive_format_name = "Empty file";
|
2007-02-01 06:18:17 +00:00
|
|
|
|
|
|
|
return (ARCHIVE_EOF);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2007-03-03 07:37:37 +00:00
|
|
|
archive_read_format_empty_read_data(struct archive_read *a,
|
2007-02-01 06:18:17 +00:00
|
|
|
const void **buff, size_t *size, off_t *offset)
|
|
|
|
{
|
|
|
|
(void)a; /* UNUSED */
|
|
|
|
(void)buff; /* UNUSED */
|
|
|
|
(void)size; /* UNUSED */
|
|
|
|
(void)offset; /* UNUSED */
|
|
|
|
|
|
|
|
return (ARCHIVE_EOF);
|
|
|
|
}
|