| /* |
| * 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.reef.util; |
| |
| import org.apache.commons.compress.utils.IOUtils; |
| |
| import java.io.*; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarOutputStream; |
| import java.util.jar.Manifest; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * Helper class to create JAR files. |
| */ |
| public class JARFileMaker implements AutoCloseable { |
| |
| private static final Logger LOG = Logger.getLogger(JARFileMaker.class.getName()); |
| |
| private final JarOutputStream jarOutputStream; |
| |
| public JARFileMaker(final File outputFile) throws IOException { |
| this(outputFile, null); |
| } |
| |
| public JARFileMaker(final File outputFile, final Manifest manifest) throws IOException { |
| LOG.log(Level.FINER, "Output jar: {0}", outputFile); |
| final FileOutputStream outputStream = new FileOutputStream(outputFile); |
| this.jarOutputStream = manifest == null ? |
| new JarOutputStream(outputStream) : new JarOutputStream(outputStream, manifest); |
| } |
| |
| /** |
| * Adds a file to the JAR. If inputFile is a folder, it will be added recursively. |
| * @param inputFile file or directory to be added to the jar. |
| * @throws IOException if cannot create a jar. |
| */ |
| public JARFileMaker add(final File inputFile) throws IOException { |
| return this.add(inputFile, null); |
| } |
| |
| public JARFileMaker addChildren(final File folder) throws IOException { |
| LOG.log(Level.FINEST, "Add children: {0}", folder); |
| for (final File nestedFile : CollectionUtils.nullToEmpty(folder.listFiles())) { |
| this.add(nestedFile); |
| } |
| return this; |
| } |
| |
| private JARFileMaker add(final File inputFile, final String prefix) throws IOException { |
| |
| final String fileNameInJAR = createPathInJar(inputFile, prefix); |
| LOG.log(Level.FINEST, "Add {0} as {1}", new Object[] {inputFile, fileNameInJAR}); |
| |
| final JarEntry entry = new JarEntry(fileNameInJAR); |
| entry.setTime(inputFile.lastModified()); |
| this.jarOutputStream.putNextEntry(entry); |
| |
| if (inputFile.isDirectory()) { |
| this.jarOutputStream.closeEntry(); |
| for (final File nestedFile : CollectionUtils.nullToEmpty(inputFile.listFiles())) { |
| this.add(nestedFile, fileNameInJAR); |
| } |
| } else { |
| try (BufferedInputStream in = new BufferedInputStream(new FileInputStream(inputFile))) { |
| IOUtils.copy(in, this.jarOutputStream); |
| } catch (final FileNotFoundException ex) { |
| LOG.log(Level.WARNING, "Skip the file: " + inputFile, ex); |
| } finally { |
| this.jarOutputStream.closeEntry(); |
| } |
| } |
| |
| return this; |
| } |
| |
| private static String createPathInJar(final File inputFile, final String prefix) { |
| final StringBuilder buf = new StringBuilder(); |
| if (prefix != null) { |
| buf.append(prefix); |
| } |
| buf.append(inputFile.getName()); |
| if (inputFile.isDirectory()) { |
| buf.append('/'); |
| } |
| return buf.toString(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| this.jarOutputStream.close(); |
| } |
| } |