001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import com.liferay.portal.kernel.freemarker.FreeMarkerEngineUtil;
018    import com.liferay.portal.kernel.velocity.VelocityEngineUtil;
019    import com.liferay.portal.model.Theme;
020    import com.liferay.portal.util.PortalUtil;
021    
022    import java.net.URL;
023    
024    import javax.servlet.ServletContext;
025    
026    /**
027     * @author Raymond Augé
028     */
029    public class ThemeHelper {
030    
031            public static final String TEMPLATE_EXTENSION_FTL = "ftl";
032    
033            public static final String TEMPLATE_EXTENSION_VM = "vm";
034    
035            public static String getResourcePath(
036                    ServletContext servletContext, Theme theme, String path) {
037    
038                    StringBundler sb = new StringBundler(9);
039    
040                    String themeContextName = GetterUtil.getString(
041                            theme.getServletContextName());
042    
043                    sb.append(themeContextName);
044    
045                    String servletContextName = StringPool.BLANK;
046    
047                    String contextPath = ContextPathUtil.getContextPath(servletContext);
048    
049                    if (!contextPath.equals(PortalUtil.getPathContext())) {
050                            servletContextName = GetterUtil.getString(
051                                    servletContext.getServletContextName());
052                    }
053    
054                    int start = 0;
055    
056                    if (path.startsWith(StringPool.SLASH)) {
057                            start = 1;
058                    }
059    
060                    int end = path.lastIndexOf(CharPool.PERIOD);
061    
062                    String extension = theme.getTemplateExtension();
063    
064                    if (extension.equals(TEMPLATE_EXTENSION_FTL)) {
065                            sb.append(theme.getFreeMarkerTemplateLoader());
066                            sb.append(theme.getTemplatesPath());
067    
068                            if (Validator.isNotNull(servletContextName) &&
069                                    !path.startsWith(StringPool.SLASH.concat(servletContextName))) {
070    
071                                    sb.append(StringPool.SLASH);
072                                    sb.append(servletContextName);
073                            }
074    
075                            sb.append(StringPool.SLASH);
076                            sb.append(path.substring(start, end));
077                            sb.append(StringPool.PERIOD);
078                            sb.append(TEMPLATE_EXTENSION_FTL);
079    
080                            return sb.toString();
081                    }
082                    else if (extension.equals(TEMPLATE_EXTENSION_VM)) {
083                            sb.append(theme.getVelocityResourceListener());
084                            sb.append(theme.getTemplatesPath());
085    
086                            if (Validator.isNotNull(servletContextName) &&
087                                    !path.startsWith(StringPool.SLASH.concat(servletContextName))) {
088    
089                                    sb.append(StringPool.SLASH);
090                                    sb.append(servletContextName);
091                            }
092    
093                            sb.append(StringPool.SLASH);
094                            sb.append(path.substring(start, end));
095                            sb.append(StringPool.PERIOD);
096                            sb.append(TEMPLATE_EXTENSION_VM);
097    
098                            return sb.toString();
099                    }
100                    else {
101                            return path;
102                    }
103            }
104    
105            public static boolean resourceExists(
106                            ServletContext servletContext, Theme theme, String path)
107                    throws Exception {
108    
109                    if (Validator.isNull(path)) {
110                            return false;
111                    }
112    
113                    String resourcePath = getResourcePath(servletContext, theme, path);
114    
115                    String extension = theme.getTemplateExtension();
116    
117                    if (extension.equals(TEMPLATE_EXTENSION_FTL)) {
118                            return FreeMarkerEngineUtil.resourceExists(resourcePath);
119                    }
120                    else if (extension.equals(TEMPLATE_EXTENSION_VM)) {
121                            return VelocityEngineUtil.resourceExists(resourcePath);
122                    }
123                    else {
124                            URL url = null;
125    
126                            if (theme.isWARFile()) {
127                                    ServletContext themeServletContext = servletContext.getContext(
128                                            theme.getContextPath());
129    
130                                    url = themeServletContext.getResource(resourcePath);
131                            }
132                            else {
133                                    url = servletContext.getResource(resourcePath);
134                            }
135    
136                            if (url == null) {
137                                    return false;
138                            }
139                            else {
140                                    return true;
141                            }
142                    }
143            }
144    
145    }