001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl-2.1.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Anahide Tchertchian 016 */ 017package org.nuxeo.ecm.web.resources.wro.processor; 018 019import ro.isdc.wro.config.ReadOnlyContext; 020import ro.isdc.wro.model.group.Inject; 021 022/** 023 * CSS URL rewriting processor, handling basePath variable replacement, and avoiding crash when one given URL cannot be 024 * rewritten. 025 * 026 * @since 7.4 027 */ 028public class CssUrlRewritingProcessor extends ro.isdc.wro.model.resource.processor.impl.css.CssUrlRewritingProcessor { 029 030 protected static final String BASE_PATH_REGEXP = "\\$\\{basePath}"; 031 032 protected static final String BASE_PATH = "${basePath}"; 033 034 @Inject 035 private ReadOnlyContext context; 036 037 @Override 038 protected String replaceImageUrl(String cssUri, String imageUrl) { 039 // Can be null when using standalone context. 040 final String contextPath = context.getRequest() != null ? context.getRequest().getContextPath() : null; 041 String finalImageUrl = imageUrl; 042 if (imageUrl != null) { 043 // some resources begin with ../ instead of BASE_PATH (e.g: ../img/fancybox.png) 044 if (!imageUrl.contains(BASE_PATH) && imageUrl.startsWith("../")) { 045 finalImageUrl = imageUrl.replace("../", contextPath + "/"); 046 } else { 047 finalImageUrl = imageUrl.replaceAll(BASE_PATH_REGEXP, contextPath); 048 } 049 } 050 return finalImageUrl; 051 } 052 053}