1 /*
2 * This file is part of *** M y C o R e ***
3 * See http://www.mycore.de/ for details.
4 *
5 * MyCoRe is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * MyCoRe is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with MyCoRe. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package org.mycore.common.content.streams;
20
21 import java.io.FilterInputStream;
22 import java.io.IOException;
23 import java.io.InputStream;
24
25 /**
26 * A FilterInputStream that wraps any InputStream to prevent close() is called.
27 * Sometimes, third party code or code you can not change closes an InputStream after
28 * it returned -1 on read(). But when using ZipInputStream, this is unwanted, because
29 * a ZipInputStream may contain other entries that have to be read and invoked code
30 * must be prevented from calling close(). With this class, a ZipInputStream or any other
31 * stream can be wrapped to regain control of closing.
32 *
33 * @author Frank L\u00FCtzenkirchen
34 */
35 public class MCRNotClosingInputStream extends FilterInputStream {
36
37 public MCRNotClosingInputStream(InputStream in) {
38 super(in);
39 }
40
41 /**
42 * Does nothing. When you want to really close the stream, call reallyClose().
43 */
44 public void close() throws IOException {
45 }
46
47 /**
48 * Really closes the stream.
49 */
50 public void reallyClose() throws IOException {
51 super.close();
52 }
53 }