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  import com.liferay.portal.kernel.util.StringPool;
27  
28  import java.io.BufferedInputStream;
29  import java.io.BufferedOutputStream;
30  import java.io.ByteArrayInputStream;
31  import java.io.IOException;
32  import java.io.Serializable;
33  
34  import java.util.zip.ZipEntry;
35  import java.util.zip.ZipOutputStream;
36  
37  /**
38   * <a href="ZipWriter.java.html"><b><i>View Source</i></b></a>
39   *
40   * @author Brian Wing Shun Chan
41   *
42   */
43  public class ZipWriter implements Serializable {
44  
45      public ZipWriter() {
46          _bam = new ByteArrayMaker();
47          _zos = new ZipOutputStream(new BufferedOutputStream(_bam));
48      }
49  
50      public void addEntry(String name, StringBuilder sb) throws IOException {
51          addEntry(name, sb.toString());
52      }
53  
54      public void addEntry(String name, String s) throws IOException {
55          addEntry(name, s.getBytes());
56      }
57  
58      public void addEntry(String name, byte[] bytes) throws IOException {
59          if (name.startsWith(StringPool.SLASH)) {
60              name = name.substring(1);
61          }
62  
63          ZipEntry entry = new ZipEntry(name);
64  
65          _zos.putNextEntry(entry);
66  
67          BufferedInputStream bis = new BufferedInputStream(
68              new ByteArrayInputStream(bytes), _BUFFER);
69  
70          int count;
71  
72          while ((count = bis.read(_data, 0, _BUFFER)) != -1) {
73              _zos.write(_data, 0, count);
74          }
75  
76          bis.close();
77      }
78  
79      public byte[] finish() throws IOException {
80          _zos.close();
81  
82          return _bam.toByteArray();
83      }
84  
85      private static final int _BUFFER = 2048;
86  
87      private ByteArrayMaker _bam;
88      private ZipOutputStream _zos;
89      private byte[] _data = new byte[_BUFFER];
90  
91  }