1 /*
2 * Copyright (C) 2013 Google Inc.
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.archive;
44
45 import java.io.IOException;
46 import java.io.OutputStream;
47 import java.util.Arrays;
48 import java.util.Collections;
49 import java.util.List;
50 import java.util.Map;
51
52 import org.apache.commons.compress.archivers.ArchiveOutputStream;
53 import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
54 import org.eclipse.jgit.api.ArchiveCommand;
55 import org.eclipse.jgit.lib.FileMode;
56 import org.eclipse.jgit.lib.ObjectId;
57 import org.eclipse.jgit.lib.ObjectLoader;
58
59 /**
60 * gzip-compressed tarball (tar.gz) format.
61 */
62 public final class TgzFormat extends BaseFormat implements
63 ArchiveCommand.Format<ArchiveOutputStream> {
64 private static final List<String> SUFFIXES = Collections
65 .unmodifiableList(Arrays.asList(".tar.gz", ".tgz")); //$NON-NLS-1$ //$NON-NLS-2$
66
67 private final ArchiveCommand.Format<ArchiveOutputStream> tarFormat = new TarFormat();
68
69 /** {@inheritDoc} */
70 @Override
71 public ArchiveOutputStream createArchiveOutputStream(OutputStream s)
72 throws IOException {
73 return createArchiveOutputStream(s,
74 Collections.<String, Object> emptyMap());
75 }
76
77 /** {@inheritDoc} */
78 @Override
79 public ArchiveOutputStream createArchiveOutputStream(OutputStream s,
80 Map<String, Object> o) throws IOException {
81 GzipCompressorOutputStream out = new GzipCompressorOutputStream(s);
82 return tarFormat.createArchiveOutputStream(out, o);
83 }
84
85 /** {@inheritDoc} */
86 @Override
87 public void putEntry(ArchiveOutputStream out,
88 ObjectId tree, String path, FileMode mode, ObjectLoader loader)
89 throws IOException {
90 tarFormat.putEntry(out, tree, path, mode, loader);
91 }
92
93 /** {@inheritDoc} */
94 @Override
95 public Iterable<String> suffixes() {
96 return SUFFIXES;
97 }
98
99 /** {@inheritDoc} */
100 @Override
101 public boolean equals(Object other) {
102 return (other instanceof TgzFormat);
103 }
104
105 /** {@inheritDoc} */
106 @Override
107 public int hashCode() {
108 return getClass().hashCode();
109 }
110 }