001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.velocity;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    
020    import java.io.InputStream;
021    
022    import org.apache.velocity.exception.ResourceNotFoundException;
023    
024    /**
025     * @author Brian Wing Shun Chan
026     */
027    public class ClassLoaderVelocityResourceListener
028            extends VelocityResourceListener {
029    
030            public InputStream getResourceStream(String source)
031                    throws ResourceNotFoundException {
032    
033                    InputStream is = null;
034    
035                    int pos = source.indexOf(JOURNAL_SEPARATOR);
036    
037                    if (pos == -1) {
038                            pos = source.indexOf(SERVLET_SEPARATOR);
039                    }
040    
041                    if (pos == -1) {
042                            pos = source.indexOf(THEME_LOADER_SEPARATOR);
043                    }
044    
045                    if (pos == -1) {
046                            ClassLoader classLoader = getClass().getClassLoader();
047    
048                            if (_log.isDebugEnabled()) {
049                                    _log.debug("Loading " + source);
050                            }
051    
052                            is = classLoader.getResourceAsStream(source);
053                    }
054    
055                    return is;
056            }
057    
058            private static Log _log = LogFactoryUtil.getLog(
059                    ClassLoaderVelocityResourceListener.class);
060    
061    }