Java Zip File zip(final File dir, final File target)

Description

zip

License

Open Source License

Declaration

public static void zip(final File dir, final File target)

    throws IOException

    

Method Source Code

//package com.java2s;
/******************************************************************************
 * Copyright (c) 2010 Oracle//from   w w w.  jav a2 s. co  m
 * 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
 *
 * Contributors:
 *    Konstantin Komissarchik - initial implementation and ongoing maintenance
 ******************************************************************************/

import java.io.File;
import java.io.FileInputStream;

import java.io.FileOutputStream;
import java.io.IOException;

import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

public class Main {
    public static void zip(final File dir, final File target)

    throws IOException

    {
        if (target.exists()) {
            delete(target);
        }

        final ZipOutputStream zip = new ZipOutputStream(
                new FileOutputStream(target));

        try {
            zipDir(target, zip, dir, ""); //$NON-NLS-1$
        } finally {
            try {
                zip.close();
            } catch (IOException e) {
            }
        }
    }

    private static void delete(final File f)

    throws IOException

    {
        if (f.isDirectory()) {
            for (File child : f.listFiles()) {
                delete(child);
            }
        }

        if (!f.delete()) {
            final String msg = "Could not delete " + f.getPath() + "."; //$NON-NLS-1$ //$NON-NLS-2$
            throw new IOException(msg);
        }
    }

    private static void zipDir(final File target,
            final ZipOutputStream zip, final File dir, final String path)

    throws IOException

    {
        for (File f : dir.listFiles()) {
            final String cpath = path + f.getName();

            if (f.isDirectory()) {
                zipDir(target, zip, f, cpath + "/"); //$NON-NLS-1$
            } else {
                zipFile(target, zip, f, cpath);
            }
        }
    }

    private static void zipFile(final File target,
            final ZipOutputStream zip, final File file, final String path)

    throws IOException

    {
        if (!file.equals(target)) {
            final ZipEntry ze = new ZipEntry(path);

            ze.setTime(file.lastModified() + 1999);
            ze.setMethod(ZipEntry.DEFLATED);

            zip.putNextEntry(ze);

            final FileInputStream in = new FileInputStream(file);

            try {
                int bufsize = 8 * 1024;
                final long flength = file.length();

                if (flength == 0) {
                    return;
                } else if (flength < bufsize) {
                    bufsize = (int) flength;
                }

                final byte[] buffer = new byte[bufsize];
                int count = in.read(buffer);

                while (count != -1) {
                    zip.write(buffer, 0, count);
                    count = in.read(buffer);
                }
            } finally {
                try {
                    in.close();
                } catch (IOException e) {
                }
            }
        }
    }
}

Related

1. zip(File srcDirectory, File destFile)
2. zip(File srcFile, File destFile, String archiveRoot)
3. zip(File theFileToZip)
4. zip(File toZip, File outFile)
5. zip(File[] sourceFiles, File destFile, boolean deleteOriginalFiles)
6. zip(final File tempLocation, final File targetZipFile)
7. zip(final File zipFile, final File... files)
8. zip(final File zipFile, final File[] files)
9. zip(final File[] filesToZip, final File zipFile)