001/*
002 * (C) Copyright 2018 Nuxeo (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 *     pierre
018 */
019package org.nuxeo.runtime.test;
020
021import java.io.IOException;
022import java.net.URL;
023import java.util.Enumeration;
024
025/**
026 * Helper class to acess a resource by name within the current classloader
027 *
028 * @since 10.2
029 */
030public class ResourceHelper {
031
032    public static URL getResource(String name) {
033        ClassLoader loader = Thread.currentThread().getContextClassLoader();
034        String callerName = Thread.currentThread().getStackTrace()[2].getClassName();
035        String relativePath = callerName.replace('.', '/').concat(".class");
036        String fullPath = loader.getResource(relativePath).getPath();
037        String basePath = fullPath.substring(0, fullPath.indexOf(relativePath));
038        try {
039            Enumeration<URL> resources = loader.getResources(name);
040            while (resources.hasMoreElements()) {
041                URL resource = resources.nextElement();
042                if (resource.getPath().startsWith(basePath)) {
043                    return resource;
044                }
045            }
046        } catch (IOException e) {
047            return null;
048        }
049        return loader.getResource(name);
050    }
051
052}