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.portlet.documentlibrary.util;
24  
25  import com.artofsolving.jodconverter.DefaultDocumentFormatRegistry;
26  import com.artofsolving.jodconverter.DocumentConverter;
27  import com.artofsolving.jodconverter.DocumentFormat;
28  import com.artofsolving.jodconverter.DocumentFormatRegistry;
29  import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
30  import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
31  import com.artofsolving.jodconverter.openoffice.converter.StreamOpenOfficeDocumentConverter;
32  
33  import com.liferay.portal.PortalException;
34  import com.liferay.portal.SystemException;
35  import com.liferay.portal.kernel.util.ArrayUtil;
36  import com.liferay.portal.kernel.util.FileUtil;
37  import com.liferay.portal.kernel.util.StringPool;
38  import com.liferay.portal.util.PrefsPropsUtil;
39  import com.liferay.portal.util.PropsKeys;
40  import com.liferay.portal.util.PropsValues;
41  import com.liferay.util.SystemProperties;
42  
43  import java.io.ByteArrayOutputStream;
44  import java.io.File;
45  import java.io.FileInputStream;
46  import java.io.IOException;
47  import java.io.InputStream;
48  
49  import java.util.ArrayList;
50  import java.util.HashMap;
51  import java.util.List;
52  import java.util.Map;
53  
54  /**
55   * <a href="DocumentConversionUtil.java.html"><b><i>View Source</i></b></a>
56   *
57   * @author Bruno Farache
58   *
59   */
60  public class DocumentConversionUtil {
61  
62      public static InputStream convert(
63              String id, InputStream is, String sourceExtension,
64              String targetExtension)
65          throws IOException, PortalException, SystemException {
66  
67          return _instance._convert(id, is, sourceExtension, targetExtension);
68      }
69  
70      public static String[] getConversions(String extension) {
71          return _instance._getConversions(extension);
72      }
73  
74      public static String getTempFileId(long fileEntryId, double version) {
75          StringBuilder sb = new StringBuilder();
76  
77          sb.append(fileEntryId);
78          sb.append(StringPool.PERIOD);
79          sb.append(version);
80  
81          return sb.toString();
82      }
83  
84      private DocumentConversionUtil() {
85          _conversionsMap.put("svg", _DRAWING_CONVERSIONS);
86          _conversionsMap.put("swf", _DRAWING_CONVERSIONS);
87  
88          _conversionsMap.put("odp", _PRESENTATION_CONVERSIONS);
89          _conversionsMap.put("ppt", _PRESENTATION_CONVERSIONS);
90          _conversionsMap.put("sxi", _PRESENTATION_CONVERSIONS);
91  
92          _conversionsMap.put("csv", _SPREADSHEET_CONVERSIONS);
93          _conversionsMap.put("ods", _SPREADSHEET_CONVERSIONS);
94          _conversionsMap.put("sxc", _SPREADSHEET_CONVERSIONS);
95          _conversionsMap.put("tsv", _SPREADSHEET_CONVERSIONS);
96          _conversionsMap.put("xls", _SPREADSHEET_CONVERSIONS);
97  
98          _conversionsMap.put("doc", _TEXT_CONVERSIONS);
99          _conversionsMap.put("odt", _TEXT_CONVERSIONS);
100         _conversionsMap.put("rtf", _TEXT_CONVERSIONS);
101         _conversionsMap.put("sxw", _TEXT_CONVERSIONS);
102         _conversionsMap.put("txt", _TEXT_CONVERSIONS);
103         _conversionsMap.put("wpd", _TEXT_CONVERSIONS);
104     }
105 
106     private InputStream _convert(
107             String id, InputStream is, String sourceExtension,
108             String targetExtension)
109         throws IOException, PortalException, SystemException {
110 
111         if (!PrefsPropsUtil.getBoolean(
112                 PropsKeys.OPENOFFICE_SERVER_ENABLED,
113                 PropsValues.OPENOFFICE_SERVER_ENABLED)) {
114 
115             return null;
116         }
117 
118         StringBuilder sb = new StringBuilder();
119 
120         sb.append(SystemProperties.get(SystemProperties.TMP_DIR));
121         sb.append("/liferay/document_conversion/");
122         sb.append(id);
123         sb.append(StringPool.PERIOD);
124         sb.append(targetExtension);
125 
126         String fileName = sb.toString();
127 
128         File file = new File(fileName);
129 
130         if (!file.exists()) {
131             DocumentFormatRegistry registry =
132                 new DefaultDocumentFormatRegistry();
133 
134             DocumentConverter converter = _getConverter(registry);
135 
136             DocumentFormat inputFormat = registry.getFormatByFileExtension(
137                 sourceExtension);
138 
139             ByteArrayOutputStream baos = new ByteArrayOutputStream();
140 
141             DocumentFormat outputFormat = registry.getFormatByFileExtension(
142                 targetExtension);
143 
144             converter.convert(is, inputFormat, baos, outputFormat);
145 
146             FileUtil.write(file, baos.toByteArray());
147         }
148 
149         return new FileInputStream(file);
150     }
151 
152     private String[] _getConversions(String extension) {
153         String[] conversions = _conversionsMap.get(extension);
154 
155         if (conversions == null) {
156             conversions = _DEFAULT_CONVERSIONS;
157         }
158         else {
159             if (ArrayUtil.contains(conversions, extension)) {
160                 List<String> list = new ArrayList<String>();
161 
162                 for (int i = 0; i < conversions.length; i++) {
163                     String conversion = conversions[i];
164 
165                     if (!conversion.equals(extension)) {
166                         list.add(conversion);
167                     }
168                 }
169 
170                 conversions = list.toArray(new String[list.size()]);
171             }
172         }
173 
174         return conversions;
175     }
176 
177     private DocumentConverter _getConverter(DocumentFormatRegistry registry)
178         throws PortalException, SystemException {
179 
180         if ((_connection == null) || (_converter == null)) {
181             String host = PrefsPropsUtil.getString(
182                 PropsKeys.OPENOFFICE_SERVER_HOST,
183                 PropsValues.OPENOFFICE_SERVER_HOST);
184             int port = PrefsPropsUtil.getInteger(
185                 PropsKeys.OPENOFFICE_SERVER_PORT,
186                 PropsValues.OPENOFFICE_SERVER_PORT);
187 
188             _connection = new SocketOpenOfficeConnection(host, port);
189             _converter = new StreamOpenOfficeDocumentConverter(_connection);
190         }
191 
192         return _converter;
193     }
194 
195     private static final String[] _DEFAULT_CONVERSIONS = new String[0];
196 
197     private static final String[] _DRAWING_CONVERSIONS = new String[] {"odg"};
198 
199     private static final String[] _PRESENTATION_CONVERSIONS = new String[] {
200         "odp", "pdf", "ppt", "swf", "sxi"
201     };
202 
203     private static final String[] _SPREADSHEET_CONVERSIONS = new String[] {
204         "csv", "ods", "pdf", "sxc", "tsv", "xls"
205     };
206 
207     private static final String[] _TEXT_CONVERSIONS = new String[] {
208         "doc", "odt", "pdf", "rtf", "sxw", "txt"
209     };
210 
211     private static DocumentConversionUtil _instance =
212         new DocumentConversionUtil();
213 
214     private Map<String, String[]> _conversionsMap =
215         new HashMap<String, String[]>();
216     private OpenOfficeConnection _connection;
217     private DocumentConverter _converter;
218 
219 }