1 /*
   2  * Copyright (c) 2005, 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 
  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 }