| // *************************************************************************************************************************** |
| // * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * |
| // * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * |
| // * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * |
| // * with the License. You may obtain a copy of the License at * |
| // * * |
| // * http://www.apache.org/licenses/LICENSE-2.0 * |
| // * * |
| // * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * |
| // * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * |
| // * specific language governing permissions and limitations under the License. * |
| // *************************************************************************************************************************** |
| package org.apache.juneau.utils; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| /** |
| * Utility class for finding resources for a class. |
| * |
| * <p> |
| * Same as {@link ClasspathResourceFinderSimple}, but first searches the working directory for the file before |
| * looking in the classpath. |
| * <br>Path traversals outside the working directory are not allowed for security reasons. |
| */ |
| public class ClasspathResourceFinderBasic extends ClasspathResourceFinderSimple { |
| |
| /** |
| * Reusable instance. |
| */ |
| public static final ClasspathResourceFinderBasic INSTANCE = new ClasspathResourceFinderBasic(); |
| |
| @Override /* ClasspathResourceFinder */ |
| public InputStream findResource(Class<?> baseClass, String name, Locale locale) throws IOException { |
| InputStream is = findFileSystemResource(name, locale); |
| if (is != null) |
| return is; |
| return findClasspathResource(baseClass, name, locale); |
| } |
| |
| /** |
| * Workhorse method for retrieving a resource from the file system. |
| * |
| * <p> |
| * This method can be overridden by subclasses to provide customized handling of resource retrieval from file systems. |
| * |
| * @param name The resource name. |
| * @param locale |
| * The resource locale. |
| * <br>Can be <jk>null</jk>. |
| * @return The resource stream, or <jk>null</jk> if it couldn't be found. |
| * @throws IOException Thrown by underlying stream. |
| */ |
| protected InputStream findFileSystemResource(String name, Locale locale) throws IOException { |
| if (name.indexOf("..") == -1) { |
| for (String n2 : getCandidateFileNames(name, locale)) { |
| File f = new File(n2); |
| if (f.exists() && f.canRead() && ! f.isAbsolute()) { |
| return new FileInputStream(f); |
| } |
| } |
| } |
| return null; |
| } |
| } |