| /* |
| * 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.batchee.cli.zip; |
| |
| import org.apache.batchee.container.exception.BatchContainerRuntimeException; |
| import org.apache.commons.io.IOUtils; |
| |
| import java.io.BufferedInputStream; |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipInputStream; |
| |
| public class Zips { |
| private static final int FILE_BUFFER_SIZE = 32768; |
| private static final int COPY_BUFFER_SIZE = 1024; |
| |
| public static void unzip(final File zipFile, final File destination) throws IOException { |
| ZipInputStream in = null; |
| try { |
| mkdir(destination); |
| |
| in = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile), FILE_BUFFER_SIZE)); |
| |
| ZipEntry entry; |
| while ((entry = in.getNextEntry()) != null) { |
| final String path = entry.getName(); |
| final File file = new File(destination, path); |
| |
| if (entry.isDirectory()) { |
| continue; |
| } |
| |
| mkdir(file.getParentFile()); |
| |
| final OutputStream out = new BufferedOutputStream(new FileOutputStream(file), FILE_BUFFER_SIZE); |
| try { |
| copy(in, out); |
| } finally { |
| IOUtils.closeQuietly(out); |
| } |
| |
| final long lastModified = entry.getTime(); |
| if (lastModified > 0) { |
| file.setLastModified(lastModified); |
| } |
| |
| } |
| } catch (final IOException e) { |
| throw new IOException("Unable to unzip " + zipFile.getAbsolutePath(), e); |
| } finally { |
| IOUtils.closeQuietly(in); |
| } |
| } |
| |
| private static void copy(final ZipInputStream from, final OutputStream to) throws IOException { |
| final byte[] buffer = new byte[COPY_BUFFER_SIZE]; |
| int length; |
| while ((length = from.read(buffer)) != -1) { |
| to.write(buffer, 0, length); |
| } |
| to.flush(); |
| } |
| |
| private static void mkdir(final File file) { |
| if (!file.exists() && !file.mkdirs()) { |
| throw new BatchContainerRuntimeException("Can't create " + file.getPath()); |
| } |
| } |
| |
| private Zips() { |
| // no-op |
| } |
| } |