/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/*

 * Simple unzip tool using #nashorn and #java

 * zip fs file system interface.

 */

if (arguments.length == 0) {

    print("Usage: jjs zipfs.js -- <.zip/.jar file> [out dir]");

    exit(1);

}

var File = Java.type("java.io.File");

// output directory where zip is extracted

var outDir = arguments[1];

if (!outDir) {

    outDir = ".";

} else {

    if (! new File(outDir).isDirectory()) {

        print(outDir + " directory does not exist!");

        exit(1);

    }

}

var Files = Java.type("java.nio.file.Files");

var FileSystems = Java.type("java.nio.file.FileSystems");

var Paths = Java.type("java.nio.file.Paths");

var zipfile = Paths.get(arguments[0])

var fs = FileSystems.newFileSystem(zipfile, null);

var root = fs.rootDirectories[0];

// walk root and handle each Path

Files.walk(root).forEach(

    function(p) {

        var outPath = outDir +

            p.toString().replace('/', File.separatorChar);

        print(outPath);

        if (Files.isDirectory(p)) {

            // create directories as needed

            new File(outPath).mkdirs();

        } else {

            // copy a 'file' resource

            Files.copy(p, new File(outPath).toPath());

        }

    }

);

// done

fs.close();