1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.zip;
24  
25  import com.liferay.portal.kernel.util.ByteArrayMaker;
26  
27  import java.io.BufferedInputStream;
28  import java.io.BufferedOutputStream;
29  import java.io.ByteArrayInputStream;
30  import java.io.IOException;
31  import java.io.Serializable;
32  
33  import java.util.zip.ZipEntry;
34  import java.util.zip.ZipOutputStream;
35  
36  /**
37   * <a href="ZipWriter.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public class ZipWriter implements Serializable {
43  
44      public ZipWriter() {
45          _bam = new ByteArrayMaker();
46          _zos = new ZipOutputStream(new BufferedOutputStream(_bam));
47      }
48  
49      public void addEntry(String name, StringBuilder sb) throws IOException {
50          addEntry(name, sb.toString());
51      }
52  
53      public void addEntry(String name, String s) throws IOException {
54          addEntry(name, s.getBytes());
55      }
56  
57      public void addEntry(String name, byte[] bytes) throws IOException {
58          ZipEntry entry = new ZipEntry(name);
59  
60          _zos.putNextEntry(entry);
61  
62          BufferedInputStream bis = new BufferedInputStream(
63              new ByteArrayInputStream(bytes), _BUFFER);
64  
65          int count;
66  
67          while ((count = bis.read(_data, 0, _BUFFER)) != -1) {
68              _zos.write(_data, 0, count);
69          }
70  
71          bis.close();
72      }
73  
74      public byte[] finish() throws IOException {
75          _zos.close();
76  
77          return _bam.toByteArray();
78      }
79  
80      private static final int _BUFFER = 2048;
81  
82      private ByteArrayMaker _bam;
83      private ZipOutputStream _zos;
84      private byte[] _data = new byte[_BUFFER];
85  
86  }