CMake/Utilities/cmlibarchive/libarchive/archive_read_extract.c

/*-
 * 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: src/lib/libarchive/archive_read_extract.c,v 1.61 2008/05/26 17:00:22 kientzle Exp $");

#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif

#include "archive.h"
#include "archive_entry.h"
#include "archive_private.h"
#include "archive_read_private.h"

static int	archive_read_extract_cleanup(struct archive_read *);

int
archive_read_extract(struct archive *_a, struct archive_entry *entry, int flags)
{
	struct archive_read_extract *extract;
	struct archive_read * a = (struct archive_read *)_a;

	extract = __archive_read_get_extract(a);
	if (extract == NULL)
		return (ARCHIVE_FATAL);

	/* If we haven't initialized the archive_write_disk object, do it now. */
	if (extract->ad == NULL) {
		extract->ad = archive_write_disk_new();
		if (extract->ad == NULL) {
			archive_set_error(&a->archive, ENOMEM, "Can't extract");
			return (ARCHIVE_FATAL);
		}
		archive_write_disk_set_standard_lookup(extract->ad);
		a->cleanup_archive_extract = archive_read_extract_cleanup;
	}

	archive_write_disk_set_options(extract->ad, flags);
	return (archive_read_extract2(&a->archive, entry, extract->ad));
}

/*
 * Cleanup function for archive_extract.
 */
static int
archive_read_extract_cleanup(struct archive_read *a)
{
	int ret = ARCHIVE_OK;

	ret = archive_write_free(a->extract->ad);
	free(a->extract);
	a->extract = NULL;
	return (ret);
}