Java ZipOutputStream Write zipIt(ZipOutputStream zos, String[] directoriesAndFiles, CRC32 crc)

Description

Zip directory content in the given output stream

License

Open Source License

Parameter

Parameter	Description
zos	the output stream in which to store the zipped directory
directoriesAndFiles	a list of directories and files to be zipped

Exception

Parameter	Description
IOException	if a zip entry cannot be created.

Declaration

protected static void zipIt(ZipOutputStream zos, String[] directoriesAndFiles, CRC32 crc) throws IOException

Method Source Code


//package com.java2s;
/*/*  ww w . j  ava 2  s .  co m*/
 * ProActive Parallel Suite(TM):
 * The Open Source library for parallel and distributed
 * Workflows & Scheduling, Orchestration, Cloud Automation
 * and Big Data Analysis on Enterprise Grids & Clouds.
 *
 * Copyright (c) 2007 - 2017 ActiveEon
 * Contact: contact@activeeon.com
 *
 * This library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation: version 3 of
 * the License.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * If needed, contact us to obtain a release under GPL Version 2 or 3
 * or a different license than the AGPL.
 */

import java.io.BufferedInputStream;

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

import java.io.IOException;

import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;

import java.util.zip.ZipOutputStream;

public class Main {
    /**
     * Zip directory content in the given output stream
     * 
     * @param zos the output stream in which to store the zipped directory
     * @param directoriesAndFiles a list of directories and files to be zipped
     * @throws IOException if a zip entry cannot be created.
     */
    protected static void zipIt(ZipOutputStream zos, String[] directoriesAndFiles, CRC32 crc) throws IOException {
        for (String pathElement : directoriesAndFiles) {
            File fileElement = new File(pathElement);
            //normalize path (also remove consecutive file separator)
            pathElement = fileElement.getPath();
            int length = pathElement.lastIndexOf(File.separator) + 1;
            if (fileElement.isFile()) {
                // add zip files at the root of the global jar file !
                zipFile(pathElement, length, zos, crc);
            } else if (fileElement.isDirectory()) {
                // get only last directory
                zipDirectory(pathElement, length, zos, crc);
            }
        }
    }

    /**
     * Add a file into a zip.
     * @param filePath the file to be added in the zip.
     * @param iBaseFolderLength the index in the directoryName from which starts the actual zip entry name.
     * @param jos the stream to write into.
     * @param crc the CRC32 of all zipentries. Can be null if no crc is needed.
     * @throws IOException if the zip file cannot be written.
     */
    protected static void zipFile(String filePath, int iBaseFolderLength, ZipOutputStream jos, CRC32 crc)
            throws IOException {
        try {
            FileInputStream fis = new FileInputStream(filePath);
            BufferedInputStream bis = new BufferedInputStream(fis);
            String fileNameEntry = filePath.substring(iBaseFolderLength).replace(File.separatorChar, '/');
            ZipEntry fileEntry = new ZipEntry(fileNameEntry);
            jos.putNextEntry(fileEntry);
            byte[] data = new byte[1024];
            int byteCount;
            while ((byteCount = bis.read(data, 0, 1024)) > -1) {
                if (crc != null) {
                    crc.update(data);
                }
                jos.write(data, 0, byteCount);
            }
            jos.closeEntry();
            fis.close();
        } catch (ZipException e) {
            // TODO Other exceptions ?
            // Duplicate entry : ignore it.
        }
    }

    /**
     * Add the given directory into the zipStream.
     * 
     * @param directoryName the directory to be added in the zip.
     * @param iBaseFolderLength the index in the directoryName from which starts the actual zip entry name.
     * @param zos the stream to write into.
     * @param crc the CRC32 of all zipentries. Can be null if no crc is needed.
     * @throws IOException if the zip file cannot be written.
     */
    protected static void zipDirectory(String directoryName, int iBaseFolderLength, ZipOutputStream zos, CRC32 crc)
            throws IOException {
        File dirobject = new File(directoryName);
        if (dirobject.exists()) {
            if (dirobject.isDirectory()) {
                File[] fileList = dirobject.listFiles();
                // Loop through the files
                for (int i = 0; i < fileList.length; i++) {
                    if (fileList[i].isDirectory()) {
                        zipDirectory(fileList[i].getPath(), iBaseFolderLength, zos, crc);
                    } else if (fileList[i].isFile()) {
                        zipFile(fileList[i].getPath(), iBaseFolderLength, zos, crc);
                    }
                }
            } else {
                throw new IOException(directoryName + " is not a directory.");
            }
        } else {
            throw new IOException("Directory " + directoryName + " does not exist.");
        }
    }
}

Java ZipOutputStream Write zipIt(ZipOutputStream zos, String[] directoriesAndFiles, CRC32 crc)

Description

License

Parameter

Exception

Declaration

Method Source Code

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