tarsnap/libarchive/archive_read_support_compression_all.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_support_compression_all.c,v 1.7 2008/12/06 06:45:15 kientzle Exp $");

#include "archive.h"

int
archive_read_support_compression_all(struct archive *a)
{
	/* Bzip falls back to "bunzip2" command-line */
	archive_read_support_compression_bzip2(a);
	/* The decompress code doesn't use an outside library. */
	archive_read_support_compression_compress(a);
	/* Gzip decompress falls back to "gunzip" command-line. */
	archive_read_support_compression_gzip(a);
	/* The LZMA file format has a very weak signature, so it
	 * may not be feasible to keep this here, but we'll try.
	 * This will come back out if there are problems. */
	/* Lzma falls back to "unlzma" command-line program. */
	archive_read_support_compression_lzma(a);
	/* Xz falls back to "unxz" command-line program. */
	archive_read_support_compression_xz(a);

	/* Note: We always return ARCHIVE_OK here, even if some of the
	 * above return ARCHIVE_WARN.  The intent here is to enable
	 * "as much as possible."  Clients who need specific
	 * compression should enable those individually so they can
	 * verify the level of support. */
	/* Clear any warning messages set by the above functions. */
	archive_clear_error(a);
	return (ARCHIVE_OK);
}