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.velocity;
16  
17  import com.liferay.portal.kernel.log.Log;
18  import com.liferay.portal.kernel.log.LogFactoryUtil;
19  import com.liferay.portal.theme.ThemeLoader;
20  import com.liferay.portal.theme.ThemeLoaderFactory;
21  
22  import java.io.FileInputStream;
23  import java.io.FileNotFoundException;
24  import java.io.InputStream;
25  
26  import org.apache.velocity.exception.ResourceNotFoundException;
27  
28  /**
29   * <a href="ThemeLoaderVelocityResourceListener.java.html"><b><i>View Source</i>
30   * </b></a>
31   *
32   * @author Brian Wing Shun Chan
33   */
34  public class ThemeLoaderVelocityResourceListener
35      extends VelocityResourceListener {
36  
37      public InputStream getResourceStream(String source)
38          throws ResourceNotFoundException {
39  
40          InputStream is = null;
41  
42          try {
43              int pos = source.indexOf(THEME_LOADER_SEPARATOR);
44  
45              if (pos != -1) {
46                  String ctxName = source.substring(0, pos);
47  
48                  ThemeLoader themeLoader = ThemeLoaderFactory.getThemeLoader(
49                      ctxName);
50  
51                  if (themeLoader != null) {
52                      String name =
53                          source.substring(pos + THEME_LOADER_SEPARATOR.length());
54  
55                      String themesPath = themeLoader.getThemesPath();
56  
57                      if (name.startsWith(themesPath)) {
58                          name = name.substring(
59                              themesPath.length(), name.length());
60                      }
61  
62                      if (_log.isDebugEnabled()) {
63                          _log.debug(
64                              name + " is associated with the theme loader " +
65                                  ctxName + " " + themeLoader);
66                      }
67  
68                      is = new FileInputStream(
69                          themeLoader.getFileStorage().getPath() + name);
70                  }
71                  else {
72                      _log.error(
73                          source + " is not valid because " + ctxName +
74                              " does not map to a theme loader");
75                  }
76              }
77          }
78          catch (FileNotFoundException fnfe) {
79              throw new ResourceNotFoundException(source);
80          }
81  
82          return is;
83      }
84  
85      private static Log _log = LogFactoryUtil.getLog(
86          ThemeLoaderVelocityResourceListener.class);
87  
88  }