001    /**
002     * Copyright (c) 2000-present 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    import com.liferay.portal.kernel.servlet.PortalWebResourceConstants;
020    import com.liferay.portal.kernel.servlet.PortalWebResourcesUtil;
021    import com.liferay.portal.kernel.servlet.ServletContextPool;
022    import com.liferay.portal.kernel.template.TemplateConstants;
023    import com.liferay.portal.template.URLResourceParser;
024    import com.liferay.portal.util.PortalUtil;
025    
026    import java.io.IOException;
027    
028    import java.net.URL;
029    
030    import javax.servlet.ServletContext;
031    
032    /**
033     * @author Alexander Chow
034     * @author Raymond Aug??
035     */
036    public class VelocityServletResourceParser extends URLResourceParser {
037    
038            @Override
039            public URL getURL(String source) throws IOException {
040                    int pos = source.indexOf(TemplateConstants.SERVLET_SEPARATOR);
041    
042                    if (pos == -1) {
043                            return null;
044                    }
045    
046                    String servletContextName = source.substring(0, pos);
047    
048                    if (servletContextName.equals(PortalUtil.getPathContext())) {
049                            servletContextName = PortalUtil.getServletContextName();
050                    }
051    
052                    ServletContext servletContext = ServletContextPool.get(
053                            servletContextName);
054    
055                    if (servletContext == null) {
056                            _log.error(
057                                    source + " is not valid because " + servletContextName +
058                                            " does not map to a servlet context");
059    
060                            return null;
061                    }
062    
063                    String name = source.substring(
064                            pos + TemplateConstants.SERVLET_SEPARATOR.length());
065    
066                    if (_log.isDebugEnabled()) {
067                            _log.debug(
068                                    name + " is associated with the servlet context " +
069                                            servletContextName + " " + servletContext);
070                    }
071    
072                    URL url = servletContext.getResource(name);
073    
074                    if ((url == null) && name.endsWith("/init_custom.vm")) {
075                            if (_log.isWarnEnabled()) {
076                                    _log.warn("The template " + name + " should be created");
077                            }
078    
079                            ServletContext themeClassicServletContext =
080                                    PortalWebResourcesUtil.getServletContext(
081                                            PortalWebResourceConstants.RESOURCE_TYPE_THEME_CLASSIC);
082    
083                            url = themeClassicServletContext.getResource(
084                                    "/classic/templates/init_custom.vm");
085                    }
086    
087                    return url;
088            }
089    
090            private static final Log _log = LogFactoryUtil.getLog(
091                    VelocityServletResourceParser.class);
092    
093    }