| /* |
| * 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 |
| * |
| * https://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.tools.ant; |
| |
| |
| import org.apache.tools.ant.util.FileUtils; |
| |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import static org.junit.Assume.assumeTrue; |
| |
| public class FileUtilities { |
| |
| /** |
| * Reads the contents of a file into a String. |
| * @param project the project containing the base directory the file is in. |
| * @param fileName the path to the file from the base directory. |
| * @return the contents of the given file as a string. |
| * @throws IOException on error reading the file (not existing, not readable etc) |
| */ |
| public static String getFileContents(Project project, String fileName) throws IOException { |
| return getFileContents(new File(project.getBaseDir(), fileName)); |
| } |
| |
| /** |
| * Reads the contents of a file into a String. |
| * @param file the file to read. |
| * @return the contents of the given file as a string. |
| * @throws IOException on error reading the file (not existing, not readable etc) |
| */ |
| public static String getFileContents(File file) throws IOException { |
| try (FileReader rdr = new FileReader(file)) { |
| return FileUtils.readFully(rdr); |
| } |
| } |
| |
| /** |
| * Modified the timestamp on a file so it's <code>seconds</code> earlier than it was before. Where <code>file</code> |
| * is a directory, this function recurses into all child files (and directories) and reduces their modified |
| * timestamps by the same range, rather than set all timestamps to the same time. |
| * @param file the file to change, or the directory to change then recurse into |
| * @param seconds how many seconds to roll the timestamp back by |
| */ |
| public static void rollbackTimestamps(File file, long seconds) { |
| if (null == file || !file.exists()) { |
| return; |
| } |
| |
| assumeTrue(file.setLastModified(file.lastModified() - seconds * 1000)); |
| |
| if (file.isDirectory()) { |
| File[] children = file.listFiles(); |
| // only possible if exception occurs, or abstract path was not valid |
| if (children == null) { |
| return; |
| } |
| Arrays.stream(children).forEach(child -> rollbackTimestamps(child, seconds)); |
| } |
| } |
| |
| } |