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.archivers.examples;
20
21 import java.io.Closeable;
22 import java.io.IOException;
23 import java.util.Objects;
24
25 final class CloseableConsumerAdapter implements Closeable {
26 private final CloseableConsumer consumer;
27 private Closeable closeable;
28
29 CloseableConsumerAdapter(final CloseableConsumer consumer) {
30 this.consumer = Objects.requireNonNull(consumer, "consumer");
31 }
32
33 @Override
34 public void close() throws IOException {
35 if (closeable != null) {
36 consumer.accept(closeable);
37 }
38 }
39
40 <C extends Closeable> C track(final C closeable) {
41 this.closeable = closeable;
42 return closeable;
43 }
44 }