1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   *
12   *
13   */
14  
15  package com.liferay.portal.servlet;
16  
17  import com.liferay.portal.kernel.language.LanguageUtil;
18  import com.liferay.portal.kernel.log.Log;
19  import com.liferay.portal.kernel.log.LogFactoryUtil;
20  import com.liferay.portal.kernel.servlet.HttpHeaders;
21  import com.liferay.portal.kernel.util.ContentTypes;
22  import com.liferay.portal.kernel.util.LocaleUtil;
23  import com.liferay.portal.kernel.util.StringPool;
24  import com.liferay.portal.kernel.util.StringUtil;
25  import com.liferay.portal.kernel.util.Validator;
26  import com.liferay.util.servlet.ServletResponseUtil;
27  
28  import java.io.IOException;
29  
30  import java.util.Locale;
31  
32  import javax.servlet.http.HttpServlet;
33  import javax.servlet.http.HttpServletRequest;
34  import javax.servlet.http.HttpServletResponse;
35  
36  /**
37   * <a href="LanguageServlet.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   */
41  public class LanguageServlet extends HttpServlet {
42  
43      public void service(
44              HttpServletRequest request, HttpServletResponse response)
45          throws IOException {
46  
47          String path = request.getPathInfo();
48  
49          if (_log.isDebugEnabled()) {
50              _log.debug("Path " + path);
51          }
52  
53          if (Validator.isNotNull(path) && path.startsWith(StringPool.SLASH)) {
54              path = path.substring(1, path.length());
55          }
56  
57          String[] pathArray = StringUtil.split(path, StringPool.SLASH);
58  
59          if (pathArray.length == 0) {
60              _log.error("Language id is not specified");
61  
62              return;
63          }
64  
65          if (pathArray.length == 1) {
66              _log.error("Language key is not specified");
67  
68              return;
69          }
70  
71          Locale locale = LocaleUtil.fromLanguageId(pathArray[0]);
72          String key = pathArray[1];
73  
74          Object[] arguments = null;
75  
76          if (pathArray.length > 2) {
77              arguments = new Object[pathArray.length - 2];
78  
79              System.arraycopy(pathArray, 2, arguments, 0, arguments.length);
80          }
81  
82          String value = key;
83  
84          try {
85              if ((arguments == null) || (arguments.length == 0)) {
86                  value = LanguageUtil.get(locale, key);
87              }
88              else {
89                  value = LanguageUtil.format(locale, key, arguments);
90              }
91          }
92          catch (Exception e) {
93              if (_log.isWarnEnabled()) {
94                  _log.warn(e, e);
95              }
96          }
97  
98          response.setContentType(ContentTypes.TEXT_PLAIN_UTF8);
99          response.setHeader(
100             HttpHeaders.CONTENT_DISPOSITION, _CONTENT_DISPOSITION);
101 
102         ServletResponseUtil.write(response, value.getBytes(StringPool.UTF8));
103     }
104 
105     private static final String _CONTENT_DISPOSITION =
106         "attachment; filename=language.txt";
107 
108     private static Log _log = LogFactoryUtil.getLog(LanguageServlet.class);
109 
110 }