Java Zip File zip(File file, File output)

Description

zip

License

Open Source License

Declaration

public static void zip(File file, File output) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2011 Sebastian Schmidt and others. All rights reserved. This
 * program and the accompanying materials are made available under the terms of
 * the Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 * // ww  w  . j  av  a2 s . com
 * Contributors: Sebastian Schmidt - initial API and implementation
 ******************************************************************************/

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.ZipOutputStream;

public class Main {
    public static void zip(File file, File output) throws IOException {
        FileOutputStream outputStream = new FileOutputStream(output);
        ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream);

        String rootDirectory;
        if (file.isDirectory()) {
            rootDirectory = file.getPath();
        } else {
            rootDirectory = file.getParentFile().getPath();
        }

        zip(file, rootDirectory, zipOutputStream);
        zipOutputStream.close();
    }

    private static void zip(File currentFile, String directory, ZipOutputStream zipOutputStream)
            throws IOException {
        if (currentFile.isDirectory()) {
            for (File file : currentFile.listFiles()) {
                zip(file, directory, zipOutputStream);
            }
        } else {
            ZipEntry entry = new ZipEntry(currentFile.getPath().substring(directory.length() + 1));
            zipOutputStream.putNextEntry(entry);
            copyFileToStream(currentFile, zipOutputStream);
        }
    }

    private static void copyFileToStream(File currentFile, OutputStream outputStream) throws IOException {
        int read = 0;
        byte[] buffer = new byte[8192];
        FileInputStream in = new FileInputStream(currentFile);
        while (-1 != (read = in.read(buffer))) {
            outputStream.write(buffer, 0, read);
        }
        in.close();
    }
}

Related

1. zip(File destination, File... files)
2. zip(File f, File destfile)
3. zip(File f, File out)
4. zip(File file, File zip)
5. zip(File file, String dest)
6. zip(File fromFile, File toFile)
7. zip(File input, File output)