Java tutorial
/* * Copyright 2014 Fizzed, Inc. * * Licensed 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 com.fizzed.stork.assembly; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.commons.io.FileUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Utility for copy files/dirs while retaining execute permissions. */ public class CopyFile { private static final Logger logger = LoggerFactory.getLogger(CopyFile.class); static public void main(String[] args) throws Exception { new CopyFile().run(args); } public void run(String[] args) { if (args.length < 2) { System.err.println("At least two arguments required"); System.exit(1); } File outputDir = new File(args[0]); List<File> inputFiles = new ArrayList<>(); for (int i = 1; i < args.length; i++) { inputFiles.add(new File(args[i])); } if (inputFiles.isEmpty()) { logger.error("No input file(s)/dir(s)"); System.exit(1); } for (File inputFile : inputFiles) { try { if (inputFile.isDirectory()) { File[] files = inputFile.listFiles(); for (File f : files) { copyFile(f, outputDir); } } else { copyFile(inputFile, outputDir); } } catch (Exception e) { logger.error("", e); System.exit(1); } } } public void copyFile(File inputFile, File outputDir) throws IOException { if (inputFile.isDirectory()) { File[] files = inputFile.listFiles(); File newOutputDir = new File(outputDir, inputFile.getName()); for (File f : files) { copyFile(f, newOutputDir); } } else { File outputFile = new File(outputDir, inputFile.getName()); outputDir.mkdirs(); logger.info(" copying " + inputFile + " to " + outputFile); FileUtils.copyFile(inputFile, outputFile); if (inputFile.canExecute()) { outputFile.setExecutable(true); } } } }