samples/unzip.js

/*
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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/*
 * 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();