String unpackFileFromZip(String zipname, String fname) // indepentent  (meaning everything else works without this)
{
 if(online) return "only offline, or with a signed applet";
 
 byte[] bytes = loadBytesFromZip(zipname,fname);
 File output = new File(sketchPath("data\\"+fname));
 try {
   OutputStream out = new FileOutputStream(output.getAbsolutePath());
   out.write(bytes,0,bytes.length);
   out.close();
 }catch(Exception e){
   return e.toString();
 }
 return output.getAbsolutePath();
}

String loadStringFromZip(String zipname, String fname) // indepentent
{
 byte[] ret = loadBytesFromZip(zipname,fname);
 if(ret == null) return null;
 return new String(ret);
}

PImage loadImageFromZip(String zipname, String fname) // indepentent
{
 if(!(fname.toLowerCase().endsWith(".gif") || fname.toLowerCase().endsWith(".jpg"))){
     println("Format not accepted: "+fname);
     return null;
 }
 byte[] ret = loadBytesFromZip(zipname,fname);
 if(ret == null) return null;
 return loadImage(ret);
}

PImage loadImage(byte[] bytes) // used by loadImageFromZip()
{
 Image img = Toolkit.getDefaultToolkit().createImage(bytes);
 MediaTracker t = new MediaTracker(this);
 t.addImage(img, 0);
 try {
   t.waitForAll();
 } catch (Exception e) {
   println(e);
 }
 return new PImage(img);
}

byte[] loadBytesFromZip(String zipname, String fname) // used by loadStringFromZip, loadImageFromZip and unpackFileFromZip
{
 try {
   // Open the ZIP file
   File inFilename = new File(sketchPath("data\\"+zipname));
   ZipInputStream in = new ZipInputStream(new FileInputStream(inFilename.getAbsolutePath()));
   
   // Get the entry that matches
   ZipEntry entry = in.getNextEntry();
   while(!entry.getName().toLowerCase().equals(fname.toLowerCase())){
     entry = in.getNextEntry();
   }
   
   if(!entry.getName().toLowerCase().equals(fname.toLowerCase())){
     println("No such file: "+fname);
     return null;
   }

   // Transfer bytes from the ZIP file to the bytearrayoutputstream
   ByteArrayOutputStream bout = new ByteArrayOutputStream();
   byte[] buf = new byte[1024];
   int len;
   while ((len = in.read(buf)) > 0) {
     bout.write(buf,0,len);
   }
   
   // Close the stream
   byte[] ret = bout.toByteArray();
   in.close();
   bout.close();
   return ret;
 } catch (IOException e) {
   println(e);
 }
 return null;
}