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 * https://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
18 package org.apache.commons.io.input;
19
20 import java.io.IOException;
21 import java.io.InputStream;
22
23 /**
24 * Abstracts {@link UnixLineEndingInputStream} and {@link WindowsLineEndingInputStream} to reduce duplication.
25 */
26 abstract class AbstractLineEndingInputStream extends InputStream {
27
28 boolean atEos;
29
30 boolean atSlashCr;
31
32 boolean atSlashLf;
33
34 final InputStream in;
35
36 final boolean lineFeedAtEos;
37
38 /**
39 * Constructs an input stream that filters another stream
40 *
41 * @param inputStream The input stream to wrap.
42 * @param lineFeedAtEos true to ensure that the file ends with LF.
43 */
44 AbstractLineEndingInputStream(final InputStream inputStream, final boolean lineFeedAtEos) {
45 this.in = inputStream;
46 this.lineFeedAtEos = lineFeedAtEos;
47 }
48
49 /**
50 * Closes the stream. Also closes the underlying stream.
51 *
52 * @throws IOException If an I/O error occurs.
53 */
54 @Override
55 public void close() throws IOException {
56 super.close();
57 in.close();
58 }
59
60 /**
61 * {@inheritDoc}
62 */
63 @Override
64 public synchronized void mark(final int readLimit) {
65 throw UnsupportedOperationExceptions.mark();
66 }
67 }