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.juneau;
18
19 import java.io.*;
20
21 /**
22 * A StringReader with a usable close() method.
23 */
24 public class CloseableStringReader extends StringReader {
25 boolean isClosed;
26
27 public CloseableStringReader(String in) {
28 super(in);
29 }
30
31 private void checkOpen() {
32 if (isClosed)
33 throw new IllegalStateException("Reader is closed");
34 }
35
36 @Override
37 public void close() {
38 isClosed = true;
39 }
40
41 @Override
42 public int read() throws IOException {
43 checkOpen();
44 return super.read();
45 }
46
47 @Override
48 public int read(char[] cbuf, int off, int len) throws IOException {
49 checkOpen();
50 return super.read(cbuf, off, len);
51 }
52 }