1   /**
2    * Copyright (c) 2000-2007 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.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.util.ByteArrayMaker;
28  
29  import java.io.File;
30  import java.io.FileInputStream;
31  import java.io.IOException;
32  import java.io.InputStream;
33  import java.io.Serializable;
34  
35  import java.util.LinkedHashMap;
36  import java.util.Map;
37  import java.util.zip.ZipEntry;
38  import java.util.zip.ZipInputStream;
39  
40  /**
41   * <a href="ZipReader.java.html"><b><i>View Source</i></b></a>
42   *
43   * @author Alexander Chow
44   * @author Brian Wing Shun Chan
45   *
46   */
47  public class ZipReader implements Serializable {
48  
49      public ZipReader(File file) throws Exception {
50          _zis = new ZipInputStream(new FileInputStream(file));
51      }
52  
53      public ZipReader(InputStream stream) {
54          try {
55              _zis = new ZipInputStream(stream);
56  
57              while (true) {
58                  ZipEntry entry = _zis.getNextEntry();
59  
60                  if (entry == null) {
61                      break;
62                  }
63  
64                  String currentName = entry.getName();
65  
66                  ByteArrayMaker bam = new ByteArrayMaker();
67  
68                  while (true) {
69                      int count = _zis.read(_data, 0, _BUFFER);
70  
71                      if (count == -1) {
72                          break;
73                      }
74  
75                      bam.write(_data, 0, count);
76                  }
77  
78                  byte[] byteArray = bam.toByteArray();
79  
80                  _entries.put(currentName, byteArray);
81              }
82          }
83          catch (IOException ioe) {
84              _log.error(ioe, ioe);
85          }
86          finally {
87              try {
88                  _zis.close();
89              }
90              catch (Exception e) {
91                  if (_log.isWarnEnabled()) {
92                      _log.warn(e);
93                  }
94              }
95          }
96      }
97  
98      public Map getEntries() {
99          return _entries;
100     }
101 
102     public String getEntryAsString(String name) {
103         byte[] byteArray = getEntryAsByteArray(name);
104 
105         if (byteArray != null) {
106             return new String(byteArray);
107         }
108 
109         return null;
110     }
111 
112     public byte[] getEntryAsByteArray(String name) {
113         return (byte[])_entries.get(name);
114     }
115 
116     private static final int _BUFFER = 2048;
117 
118     private static Log _log = LogFactoryUtil.getLog(ZipReader.class);
119 
120     private ZipInputStream _zis;
121     private Map _entries = new LinkedHashMap();
122     private byte[] _data = new byte[_BUFFER];
123 
124 }