001    /**
002     * Copyright (c) 2000-2013 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.freemarker;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.servlet.ServletContextPool;
020    import com.liferay.portal.kernel.template.TemplateConstants;
021    import com.liferay.portal.template.URLResourceParser;
022    import com.liferay.portal.util.PortalUtil;
023    
024    import java.io.IOException;
025    
026    import java.net.URL;
027    
028    import javax.servlet.ServletContext;
029    
030    /**
031     * @author Mika Koivisto
032     */
033    public class FreeMarkerServletResourceParser extends URLResourceParser {
034    
035            @Override
036            public URL getURL(String name) throws IOException {
037                    int pos = name.indexOf(TemplateConstants.SERVLET_SEPARATOR);
038    
039                    if (pos == -1) {
040                            return null;
041                    }
042    
043                    String servletContextName = name.substring(0, pos);
044    
045                    if (servletContextName.equals(PortalUtil.getPathContext())) {
046                            servletContextName = PortalUtil.getServletContextName();
047                    }
048    
049                    ServletContext servletContext = ServletContextPool.get(
050                            servletContextName);
051    
052                    if (servletContext == null) {
053                            _log.error(
054                                    name + " is invalid because " + servletContextName +
055                                            " does not map to a servlet context");
056    
057                            return null;
058                    }
059    
060                    String templateName = name.substring(
061                            pos + TemplateConstants.SERVLET_SEPARATOR.length());
062    
063                    if (_log.isDebugEnabled()) {
064                            _log.debug(
065                                    name + " is associated with the servlet context " +
066                                            servletContextName + " " + servletContext);
067                    }
068    
069                    URL url = servletContext.getResource(templateName);
070    
071                    if ((url == null) && templateName.endsWith("/init_custom.ftl")) {
072                            if (_log.isWarnEnabled()) {
073                                    _log.warn("The template " + name + " should be created");
074                            }
075    
076                            ServletContext portalServletContext = ServletContextPool.get(
077                                    PortalUtil.getServletContextName());
078    
079                            url = portalServletContext.getResource(
080                                    "/html/themes/_unstyled/templates/init_custom.ftl");
081                    }
082    
083                    return url;
084            }
085    
086            private static Log _log = LogFactoryUtil.getLog(
087                    FreeMarkerServletResourceParser.class);
088    
089    }