Java Zip File zip(File src, File target)

Description

zip a folder to a file

License

Apache License

Declaration

public static void zip(File src, File target) throws IOException 

Method Source Code

//package com.java2s;
/*//from  w w  w.  j  a v  a2s.c om
 * z2env.org - (c) ZFabrik Software KG
 * 
 * Licensed under Apache 2.
 * 
 * www.z2-environment.net
 */

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

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

public class Main {
    public static FileFilter ALL_FILES = new FileFilter() {
        public boolean accept(File pathname) {
            return true;
        }
    };

    /**
     * zip a folder to a file
     */
    public static void zip(File src, File target) throws IOException {
        zip(src, null, target, ALL_FILES);
    }

    /**
     * zip a folder to a file
     */
    public static void zip(File src, File target, FileFilter filter) throws IOException {
        zip(src, null, target, filter);
    }

    /**
     * zip a folder to a file
     */
    public static void zip(File src, String path, File target) throws IOException {
        zip(src, path, target, ALL_FILES);
    }

    /**
     * zip a file or folder to a file
     */
    public static void zip(File src, String path, File target, FileFilter filter) throws IOException {
        OutputStream out = new FileOutputStream(target);
        ZipOutputStream zo = new ZipOutputStream(out);
        try {
            _zip(src, (path == null ? "" : path), zo, filter);
        } finally {
            zo.close();
        }
    }

    private static void _zip(File src, String path, ZipOutputStream zo, FileFilter filter) throws IOException {
        if (src.isDirectory()) {
            _addFolderToZIP(src, path, zo);
            String p;
            for (File f : src.listFiles(filter)) {
                p = (path.length() > 0 ? path + "/" : "") + f.getName();
                _zip(f, p, zo, filter);
            }

        } else {
            _addFileToZIP(src, path, zo);
        }

    }

    private static void _addFolderToZIP(File f, String path, ZipOutputStream zo) throws IOException {
        if (path.length() > 0) {
            path = path + "/"; // append to make it appear as a folder
            ZipEntry ze = new ZipEntry(path);
            if (f != null) {
                ze.setTime(f.lastModified());
            }
            zo.putNextEntry(ze);
            zo.closeEntry();
        }
    }

    private static void _addFileToZIP(File f, String path, ZipOutputStream zo) throws IOException {
        ZipEntry ze = new ZipEntry(path);
        zo.putNextEntry(ze);
        ze.setTime(f.lastModified());
        int len = (int) f.length();
        byte[] buffer = new byte[len];
        // read that file completely
        InputStream fin = new FileInputStream(f);
        int l, s = 0;
        while ((l = fin.read(buffer, s, len - s)) > 0)
            s += l;
        fin.close();
        zo.write(buffer);
        zo.closeEntry();
    }
}

Related

1. zip(File inputDirectory, File zippedFile, FileFilter filter)
2. zip(File path)
3. zip(File source, File target)
4. zip(File source, File target)
5. zip(File sourceDir, OutputStream targetStream)
6. zip(File srcDir, File zipFile)
7. zip(File srcDirectory, File destFile)
8. zip(File srcFile, File destFile, String archiveRoot)
9. zip(File theFileToZip)