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.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.util.ByteArrayMaker;
28  import com.liferay.portal.kernel.util.ObjectValuePair;
29  import com.liferay.portal.kernel.util.StringPool;
30  
31  import java.io.File;
32  import java.io.FileInputStream;
33  import java.io.IOException;
34  import java.io.InputStream;
35  import java.io.Serializable;
36  
37  import java.util.ArrayList;
38  import java.util.LinkedHashMap;
39  import java.util.List;
40  import java.util.Map;
41  import java.util.zip.ZipEntry;
42  import java.util.zip.ZipInputStream;
43  
44  /**
45   * <a href="ZipReader.java.html"><b><i>View Source</i></b></a>
46   *
47   * @author Alexander Chow
48   * @author Brian Wing Shun Chan
49   *
50   */
51  public class ZipReader implements Serializable {
52  
53      public ZipReader(File file) throws Exception {
54          this(new FileInputStream(file));
55      }
56  
57      public ZipReader(InputStream stream) {
58          try {
59              _zis = new ZipInputStream(stream);
60  
61              while (true) {
62                  ZipEntry entry = _zis.getNextEntry();
63  
64                  if (entry == null) {
65                      break;
66                  }
67  
68                  String currentName = entry.getName();
69  
70                  ByteArrayMaker bam = new ByteArrayMaker();
71  
72                  while (true) {
73                      int count = _zis.read(_data, 0, _BUFFER);
74  
75                      if (count == -1) {
76                          break;
77                      }
78  
79                      bam.write(_data, 0, count);
80                  }
81  
82                  byte[] bytes = bam.toByteArray();
83  
84                  _entries.put(currentName, bytes);
85  
86                  int pos = currentName.lastIndexOf(StringPool.SLASH);
87  
88                  String folderPath = StringPool.BLANK;
89                  String fileName = currentName;
90  
91                  if (pos > 0) {
92                      folderPath = currentName.substring(0, pos + 1);
93                      fileName = currentName.substring(pos + 1);
94                  }
95  
96                  List<ObjectValuePair<String, byte[]>> files =
97                      _folderEntries.get(folderPath);
98  
99                  if (files == null) {
100                     files = new ArrayList<ObjectValuePair<String, byte[]>>();
101 
102                     _folderEntries.put(folderPath, files);
103                 }
104 
105                 ObjectValuePair<String, byte[]> ovp =
106                     new ObjectValuePair<String, byte[]>(fileName, bytes);
107 
108                 files.add(ovp);
109             }
110         }
111         catch (IOException ioe) {
112             _log.error(ioe, ioe);
113         }
114         finally {
115             try {
116                 _zis.close();
117             }
118             catch (Exception e) {
119                 if (_log.isWarnEnabled()) {
120                     _log.warn(e);
121                 }
122             }
123         }
124     }
125 
126     public Map<String, byte[]> getEntries() {
127         return _entries;
128     }
129 
130     public byte[] getEntryAsByteArray(String name) {
131         byte[] bytes = _entries.get(name);
132 
133         if ((bytes == null) && name.startsWith(StringPool.SLASH)) {
134             bytes = _entries.get(name.substring(1));
135         }
136 
137         return bytes;
138     }
139 
140     public String getEntryAsString(String name) {
141         byte[] bytes = getEntryAsByteArray(name);
142 
143         if (bytes != null) {
144             return new String(bytes);
145         }
146 
147         return null;
148     }
149 
150     public Map<String, List<ObjectValuePair<String, byte[]>>>
151         getFolderEntries() {
152 
153         return _folderEntries;
154     }
155 
156     public List<ObjectValuePair<String, byte[]>> getFolderEntries(String path) {
157         return _folderEntries.get(path);
158     }
159 
160     private static final int _BUFFER = 2048;
161 
162     private static Log _log = LogFactoryUtil.getLog(ZipReader.class);
163 
164     private ZipInputStream _zis;
165     private Map<String, byte[]> _entries = new LinkedHashMap<String, byte[]>();
166     private Map<String, List<ObjectValuePair<String, byte[]>>> _folderEntries =
167         new LinkedHashMap<String, List<ObjectValuePair<String, byte[]>>>();
168     private byte[] _data = new byte[_BUFFER];
169 
170 }