1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.compress.archivers.tar;
18
19 import java.io.IOException;
20 import java.io.InputStream;
21
22 /**
23 * This is an InputStream that always return 0, this is used when reading the "holes" of a sparse file
24 */
25 final class TarArchiveSparseZeroInputStream extends InputStream {
26
27 /**
28 * Returns 0.
29 *
30 * @return 0
31 * @throws IOException
32 */
33 @Override
34 public int read() throws IOException {
35 return 0;
36 }
37
38 /**
39 * Returns the input.
40 *
41 * @param n bytes to skip
42 * @return bytes actually skipped
43 */
44 @Override
45 public long skip(final long n) {
46 return n;
47 }
48 }