1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights 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.servlet;
24  
25  import com.liferay.portal.kernel.language.LanguageUtil;
26  import com.liferay.portal.kernel.log.Log;
27  import com.liferay.portal.kernel.log.LogFactoryUtil;
28  import com.liferay.portal.kernel.util.ContentTypes;
29  import com.liferay.portal.kernel.util.LocaleUtil;
30  import com.liferay.portal.kernel.util.StringPool;
31  import com.liferay.portal.kernel.util.StringUtil;
32  import com.liferay.portal.kernel.util.Validator;
33  import com.liferay.util.servlet.ServletResponseUtil;
34  
35  import java.io.IOException;
36  
37  import java.util.Locale;
38  
39  import javax.servlet.http.HttpServlet;
40  import javax.servlet.http.HttpServletRequest;
41  import javax.servlet.http.HttpServletResponse;
42  
43  /**
44   * <a href="LanguageServlet.java.html"><b><i>View Source</i></b></a>
45   *
46   * @author Brian Wing Shun Chan
47   */
48  public class LanguageServlet extends HttpServlet {
49  
50      public void service(
51              HttpServletRequest request, HttpServletResponse response)
52          throws IOException {
53  
54          String path = request.getPathInfo();
55  
56          if (_log.isDebugEnabled()) {
57              _log.debug("Path " + path);
58          }
59  
60          if (Validator.isNotNull(path) && path.startsWith(StringPool.SLASH)) {
61              path = path.substring(1, path.length());
62          }
63  
64          String[] pathArray = StringUtil.split(path, StringPool.SLASH);
65  
66          if (pathArray.length == 0) {
67              _log.error("Language id is not specified");
68  
69              return;
70          }
71  
72          if (pathArray.length == 1) {
73              _log.error("Language key is not specified");
74  
75              return;
76          }
77  
78          Locale locale = LocaleUtil.fromLanguageId(pathArray[0]);
79          String key = pathArray[1];
80  
81          Object[] arguments = null;
82  
83          if (pathArray.length > 2) {
84              arguments = new Object[pathArray.length - 2];
85  
86              System.arraycopy(pathArray, 2, arguments, 0, arguments.length);
87          }
88  
89          String value = key;
90  
91          try {
92              if ((arguments == null) || (arguments.length == 0)) {
93                  value = LanguageUtil.get(locale, key);
94              }
95              else {
96                  value = LanguageUtil.format(locale, key, arguments);
97              }
98          }
99          catch (Exception e) {
100             if (_log.isWarnEnabled()) {
101                 _log.warn(e, e);
102             }
103         }
104 
105         response.setContentType(ContentTypes.TEXT_PLAIN_UTF8);
106 
107         ServletResponseUtil.write(response, value.getBytes(StringPool.UTF8));
108     }
109 
110     private static Log _log = LogFactoryUtil.getLog(LanguageServlet.class);
111 
112 }