Java Zip File List zip(File zipFile, File parentDir, File[] sources, char pathSeparator)

Description

Recursively zips a set of root entries into a zipfile, compressing the contents.

License

Apache License

Parameter

Parameter	Description
zipFile	target zip file.
parentDir	a directory containing source files to zip.
sources	an array of files and/or directories to zip.
pathSeparator	path separator for zip entries.

Exception

Parameter	Description
IOException	an exception

Declaration

public static void zip(File zipFile, File parentDir, File[] sources, char pathSeparator) throws IOException

Method Source Code

//package com.java2s;
/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.//from w  w  w  . j a  v  a2 s. com
 ****************************************************************/

import java.io.BufferedInputStream;

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 {
    /**
     * Recursively zips a set of root entries into a zipfile, compressing the contents.
     * 
     * @param zipFile target zip file.
     * @param parentDir a directory containing source files to zip.
     * @param sources an array of files and/or directories to zip.
     * @param pathSeparator path separator for zip entries.
     * @throws IOException
     */
    public static void zip(File zipFile, File parentDir, File[] sources, char pathSeparator) throws IOException {

        String stripPath = (parentDir != null) ? parentDir.getPath() : "";
        if (stripPath.length() > 0 && !stripPath.endsWith(File.separator)) {
            stripPath += File.separator;
        }

        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
        out.setMethod(ZipOutputStream.DEFLATED);

        try {
            // something like an Ant directory scanner wouldn't hurt here
            for (File source : sources) {
                if (!source.exists()) {
                    throw new IllegalArgumentException("File or directory does not exist: " + source);
                }

                if (source.isDirectory()) {
                    zipDirectory(out, stripPath, source, pathSeparator);
                } else {
                    zipFile(out, stripPath, source, pathSeparator);
                }
            }
        } finally {
            out.close();
        }
    }

    /**
     * Uses code fragments from Jakarta-Ant, Copyright: Apache Software Foundation.
     */
    private static void zipDirectory(ZipOutputStream out, String stripPath, File dir, char pathSeparator)
            throws IOException {

        String[] entries = dir.list();

        if (entries == null || entries.length == 0) {
            return;
        }

        // recurse via entries
        for (String entry : entries) {
            File file = new File(dir, entry);
            if (file.isDirectory()) {
                zipDirectory(out, stripPath, file, pathSeparator);
            } else {
                zipFile(out, stripPath, file, pathSeparator);
            }
        }
    }

    /**
     * Uses code fragments from Jakarta-Ant, Copyright: Apache Software Foundation.
     */
    private static void zipFile(ZipOutputStream out, String stripPath, File file, char pathSeparator)
            throws IOException {
        ZipEntry ze = new ZipEntry(processPath(file.getPath(), stripPath, pathSeparator));
        ze.setTime(file.lastModified());
        out.putNextEntry(ze);

        byte[] buffer = new byte[8 * 1024];
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(file), buffer.length);

        try {
            int count = 0;
            while ((count = in.read(buffer, 0, buffer.length)) >= 0) {
                if (count != 0) {
                    out.write(buffer, 0, count);
                }
            }
        } finally {
            in.close();
        }
    }

    private static String processPath(String path, String stripPath, char pathSeparator) {
        if (!path.startsWith(stripPath)) {
            throw new IllegalArgumentException("Invalid entry: " + path + "; expected to start with " + stripPath);
        }

        return path.substring(stripPath.length()).replace(File.separatorChar, pathSeparator);
    }
}

Java Zip File List zip(File zipFile, File parentDir, File[] sources, char pathSeparator)

Description

License

Parameter

Exception

Declaration

Method Source Code

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