1 /*
2  * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /**
25  * @test
26  * @bug 6285124
27  * @summary Small compressed zip entries should be read in one read() operation
28  * @author Martin Buchholz
29  */
30 
31 import java.io.*;
32 import java.util.zip.*;
33 
34 public class ShortRead {
35 
main(String[] args)36     public static void main(String[] args) throws Exception {
37         final File zFile = new File("abc.zip");
38         try {
39             final String entryName = "abc";
40             final String data = "Data disponible";
41             try (FileOutputStream fos = new FileOutputStream(zFile);
42                  ZipOutputStream zos = new ZipOutputStream(fos))
43             {
44                 zos.putNextEntry(new ZipEntry(entryName));
45                 zos.write(data.getBytes("ASCII"));
46                 zos.closeEntry();
47             }
48 
49             try (ZipFile zipFile = new ZipFile(zFile)) {
50                 final ZipEntry zentry = zipFile.getEntry(entryName);
51                 final InputStream inputStream = zipFile.getInputStream(zentry);
52                 System.out.printf("size=%d csize=%d available=%d%n",
53                                   zentry.getSize(),
54                                   zentry.getCompressedSize(),
55                                   inputStream.available());
56                 byte[] buf = new byte[data.length()];
57                 final int count = inputStream.read(buf);
58                 if (! new String(buf, "ASCII").equals(data) ||
59                     count != data.length())
60                     throw new Exception("short read?");
61             }
62         } finally {
63             zFile.delete();
64         }
65     }
66 }
67