1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.commons.compress.compressors.lzma;
20
21 import java.io.IOException;
22 import java.io.OutputStream;
23
24 import org.apache.commons.compress.compressors.CompressorOutputStream;
25 import org.tukaani.xz.LZMA2Options;
26 import org.tukaani.xz.LZMAOutputStream;
27
28 /**
29 * LZMA compressor.
30 *
31 * @since 1.13
32 */
33 public class LZMACompressorOutputStream extends CompressorOutputStream {
34 private final LZMAOutputStream out;
35
36 /**
37 * Creates a LZMA compressor.
38 *
39 * @param outputStream the stream to wrap
40 * @throws IOException on error
41 */
42 public LZMACompressorOutputStream(final OutputStream outputStream) throws IOException {
43 out = new LZMAOutputStream(outputStream, new LZMA2Options(), -1);
44 }
45
46 /** {@inheritDoc} */
47 @Override
48 public void close() throws IOException {
49 out.close();
50 }
51
52 /**
53 * Finishes compression without closing the underlying stream. No more data can be written to this stream after finishing.
54 *
55 * @throws IOException on error
56 */
57 public void finish() throws IOException {
58 out.finish();
59 }
60
61 /**
62 * Doesn't do anything as {@link LZMAOutputStream} doesn't support flushing.
63 */
64 @Override
65 public void flush() throws IOException {
66 // noop
67 }
68
69 /** {@inheritDoc} */
70 @Override
71 public void write(final byte[] buf, final int off, final int len) throws IOException {
72 out.write(buf, off, len);
73 }
74
75 /** {@inheritDoc} */
76 @Override
77 public void write(final int b) throws IOException {
78 out.write(b);
79 }
80 }