Write into a Zip archive with RingoJS.

writeToZip.js

var fs = require("fs");

var writeToZip = function(files, dest, filePrefix) {
   
   var fos = new java.io.FileOutputStream(dest);
   var zos = new java.util.zip.ZipOutputStream(fos);
   
   files.forEach(function(file, index) {
      var ze = new java.util.zip.ZipEntry((filePrefix || "") + fs.base(file));
      var data = fs.read(file, "b");
      zos.putNextEntry(ze);
      zos.write(data);
      zos.closeEntry();
   });
   
   zos.close();
   fos.close();
};

writeToZip([
   "/Users/Philipp/Pictures/tmp-pola/PN_20110703-2133-01.jpg",
   "/Users/Philipp/Pictures/tmp-pola/PN_20110703-2140-02.jpg",
   "/Users/Philipp/Pictures/tmp-pola/PN_20110703-2143-03.jpg",
   "/Users/Philipp/Pictures/tmp-pola/PN_20110703-2145-04.jpg",
   "/Users/Philipp/Pictures/tmp-pola/PN_20110703-2150-05.jpg"
], "/Users/Philipp/Pictures/tmp-pola/_exported_" + (new Date()).getTime() + ".zip");

Stuff like this can be added at any time.