1   /**
2    * Copyright (c) 2000-2009 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   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.velocity;
21  
22  import com.liferay.portal.kernel.log.Log;
23  import com.liferay.portal.kernel.log.LogFactoryUtil;
24  import com.liferay.portal.theme.ThemeLoader;
25  import com.liferay.portal.theme.ThemeLoaderFactory;
26  
27  import java.io.FileInputStream;
28  import java.io.FileNotFoundException;
29  import java.io.InputStream;
30  
31  import org.apache.velocity.exception.ResourceNotFoundException;
32  
33  /**
34   * <a href="ThemeLoaderVelocityResourceListener.java.html"><b><i>View Source</i>
35   * </b></a>
36   *
37   * @author Brian Wing Shun Chan
38   *
39   */
40  public class ThemeLoaderVelocityResourceListener
41      extends VelocityResourceListener {
42  
43      public InputStream getResourceStream(String source)
44          throws ResourceNotFoundException {
45  
46          InputStream is = null;
47  
48          try {
49              int pos = source.indexOf(THEME_LOADER_SEPARATOR);
50  
51              if (pos != -1) {
52                  String ctxName = source.substring(0, pos);
53  
54                  ThemeLoader themeLoader = ThemeLoaderFactory.getThemeLoader(
55                      ctxName);
56  
57                  if (themeLoader != null) {
58                      String name =
59                          source.substring(pos + THEME_LOADER_SEPARATOR.length());
60  
61                      String themesPath = themeLoader.getThemesPath();
62  
63                      if (name.startsWith(themesPath)) {
64                          name = name.substring(
65                              themesPath.length(), name.length());
66                      }
67  
68                      if (_log.isDebugEnabled()) {
69                          _log.debug(
70                              name + " is associated with the theme loader " +
71                                  ctxName + " " + themeLoader);
72                      }
73  
74                      is = new FileInputStream(
75                          themeLoader.getFileStorage().getPath() + name);
76                  }
77                  else {
78                      _log.error(
79                          source + " is not valid because " + ctxName +
80                              " does not map to a theme loader");
81                  }
82              }
83          }
84          catch (FileNotFoundException fnfe) {
85              throw new ResourceNotFoundException(source);
86          }
87  
88          return is;
89      }
90  
91      private static Log _log =
92          LogFactoryUtil.getLog(ThemeLoaderVelocityResourceListener.class);
93  
94  }