Java ZipOutputStream Write zipToStream(File file, int prefixLength, ZipOutputStream out)

Description

zip To Stream

License

Open Source License

Declaration

public static void zipToStream(File file, int prefixLength, ZipOutputStream out) throws IOException 

Method Source Code

//package com.java2s;
/*/*from   ww w .j  ava 2  s  . c  om*/
 * @(#) FileUtils.java
 *
 * This code is part of the JNavigator project.
 * Copyright (c) 2011  Clemens Krainer
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

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

import java.io.IOException;
import java.io.InputStream;

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

public class Main {
    public static void zipToStream(File file, int prefixLength, ZipOutputStream out) throws IOException {
        String name;
        if (file.getAbsolutePath().length() < prefixLength) {
            name = "";
        } else {
            name = file.getAbsolutePath().substring(prefixLength);
        }

        if (name.isEmpty() && file.isFile()) {
            return;
        }

        if (!name.isEmpty()) {
            ZipEntry e = new ZipEntry(name + (file.isFile() ? "" : File.separator));
            e.setTime(file.lastModified());
            e.setCompressedSize(file.length());
            e.setSize(file.length());
            out.putNextEntry(e);
        }

        if (file.isFile()) {
            InputStream inStream = new FileInputStream(file);
            int len;
            byte[] buf = new byte[8192];
            while ((len = inStream.read(buf)) >= 0) {
                out.write(buf, 0, len);
            }
            out.closeEntry();
            inStream.close();
        } else {
            if (!name.isEmpty()) {
                out.closeEntry();
            }
            for (String n : file.list()) {
                File f = new File(file, n);
                zipToStream(f, prefixLength, out);
            }
        }
    }
}

Related

1. zipOneFile(File file, ZipOutputStream out, String relativePath)
2. zipOneFile(String prefix, File file, ZipOutputStream zos)
3. zipRecurse(File file, int prefixLength, ZipOutputStream zos)
4. zipRecursively(String path, File dir, ZipOutputStream out)
5. zipStoreBuffer(ZipOutputStream zip, String name, byte[] dataBuffer)