001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Anahide Tchertchian 018 */ 019package org.nuxeo.ecm.web.resources.wro.processor; 020 021import ro.isdc.wro.config.ReadOnlyContext; 022import ro.isdc.wro.model.group.Inject; 023 024/** 025 * CSS URL rewriting processor, handling basePath variable replacement, and avoiding crash when one given URL cannot be 026 * rewritten. 027 * 028 * @since 7.4 029 */ 030public class CssUrlRewritingProcessor extends ro.isdc.wro.model.resource.processor.impl.css.CssUrlRewritingProcessor { 031 032 protected static final String BASE_PATH_REGEXP = "\\$\\{basePath}"; 033 034 protected static final String BASE_PATH = "${basePath}"; 035 036 @Inject 037 private ReadOnlyContext context; 038 039 @Override 040 protected String replaceImageUrl(String cssUri, String imageUrl) { 041 // Can be null when using standalone context. 042 final String contextPath = context.getRequest() != null ? context.getRequest().getContextPath() : null; 043 String finalImageUrl = imageUrl; 044 if (imageUrl != null) { 045 // some resources begin with ../ instead of BASE_PATH (e.g: ../img/fancybox.png) 046 if (!imageUrl.contains(BASE_PATH) && imageUrl.startsWith("../")) { 047 finalImageUrl = imageUrl.replace("../", contextPath + "/"); 048 } else { 049 finalImageUrl = imageUrl.replaceAll(BASE_PATH_REGEXP, contextPath); 050 } 051 } 052 return finalImageUrl; 053 } 054 055}