All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.databene.commons.ZipUtil Maven / Gradle / Ivy

Go to download

'databene commons' is an open source Java library by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

There is a newer version: 1.0.11
Show newest version
/*
 * Copyright (C) 2004-2014 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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 org.databene.commons;

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.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Provides ZIP-related convenience methods.

* Created: 20.10.2011 15:19:07 * @since 0.5.10 * @author Volker Bergmann */ public class ZipUtil { private static final int BUFFER_SIZE = 2048; private static final Logger LOGGER = LoggerFactory.getLogger(ZipUtil.class); public static void compressAndDelete(File source, File zipFile) { try { compress(source, zipFile); source.delete(); } catch (IOException e) { throw new RuntimeException("Unexpected error", e); } } public static void compress(File source, File zipFile) throws IOException { ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile))); out.setMethod(ZipOutputStream.DEFLATED); try { addFileOrDirectory(source, source, out); out.close(); } catch (IOException e) { throw new RuntimeException("Zipping the report failed"); } } public static void printContent(File zipFile) { ZipInputStream in = null; try { in = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile))); ZipEntry entry; while ((entry = in.getNextEntry()) != null) System.out.println(entry.getName()); } catch (IOException e) { LOGGER.error("Error listing archive content of file " + zipFile, e); } finally { IOUtil.close(in); } } // private helpers ------------------------------------------------------------------------------------------------- private static void addFileOrDirectory(File source, File root, ZipOutputStream out) throws IOException { if (source.isFile()) addFile(source, root, out); else if (source.isDirectory()) addDirectory(source, root, out); } private static void addDirectory(File source, File root, ZipOutputStream out) throws IOException { for (File file : source.listFiles()) addFileOrDirectory(file, root, out); } private static void addFile(File source, File root, ZipOutputStream out) throws IOException { byte[] buffer = new byte[BUFFER_SIZE]; InputStream in = new BufferedInputStream(new FileInputStream(source)); ZipEntry entry = new ZipEntry(FileUtil.relativePath(root, source)); out.putNextEntry(entry); int count; while ((count = in.read(buffer, 0, BUFFER_SIZE)) != -1) out.write(buffer, 0, count); in.close(); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy