Adds an entry at the root of the ZIP. - Java File Path IO

Java examples for File Path IO:Zip File

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Description

Adds an entry at the root of the ZIP.

Demo Code

/*//  w  ww  .  jav  a 2  s  .  c o m
 * JBoss, Home of Professional Open Source.
 * Copyright 2015, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

public class Main{
    public static final String ENTRY_SEPARATOR = "/";
    /**
     * Adds an entry at the root of the ZIP.
     *
     * @param fileOrDir  file or directory
     * @param zos  target zip
     * @throws IOException
     */
    public static void addToZip(File fileOrDir, ZipOutputStream zos)
            throws IOException {
        addToZip(fileOrDir, null, zos);
    }
    /**
     * Adds an entry to the ZIP at the specified path.
     * If the path is null, the entry will added at the root of the ZIP.
     *
     * @param fileOrDir  file or directory
     * @param path  path relative to the root of the ZIP
     * @param zos  target ZIP
     * @throws IOException
     */
    public static void addToZip(File fileOrDir, String path,
            ZipOutputStream zos) throws IOException {
        if (fileOrDir.isDirectory()) {
            final String dirName = path == null ? fileOrDir.getName()
                    : path + ENTRY_SEPARATOR + fileOrDir.getName();
            addDirectoryToZip(fileOrDir, dirName, zos);
        } else {
            addFileToZip(fileOrDir, path, zos);
        }
    }
    private static void addDirectoryToZip(File dir, String dirName,
            ZipOutputStream zos) throws IOException {

        final ZipEntry dirEntry = new ZipEntry(dirName + ENTRY_SEPARATOR);
        zos.putNextEntry(dirEntry);
        zos.closeEntry();

        File[] children = dir.listFiles();
        if (children != null) {
            for (File file : children) {
                if (file.isDirectory()) {
                    addDirectoryToZip(file, dirName + ENTRY_SEPARATOR
                            + file.getName(), zos);
                } else {
                    addFileToZip(file, dirName, zos);
                }
            }
        }
    }
    private static void addFileToZip(File file, String parent,
            ZipOutputStream zos) throws IOException {
        final FileInputStream is = new FileInputStream(file);
        try {
            final String entryName = parent == null ? file.getName()
                    : parent + ENTRY_SEPARATOR + file.getName();
            zos.putNextEntry(new ZipEntry(entryName));

            final BufferedInputStream bis = new BufferedInputStream(is);
            try {
                IoUtils.copyStream(bis, zos);
            } finally {
                IoUtils.safeClose(bis);
            }

            zos.closeEntry();
        } finally {
            IoUtils.safeClose(is);
        }
    }
}

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