package org.paneris.bibliomania.fti;

 import java.io.IOException;

 import java.io.OutputStream;

 public class FourPacker extends Packer {

   public static final FourPacker it = new FourPacker();

   public FourPacker() {

     super(4, 0xFFFFFFFF);

   }

   public static int number_(byte[] bytes, int off) {

     return uint(bytes[off + 0]) << 24 | uint(bytes[off + 1]) << 16 |

            uint(bytes[off + 2]) <<  8 | uint(bytes[off + 3]);

   }

   public int number(byte[] bytes, int off) {

     return number_(bytes, off);

   }

   public Packer bigger() {

     throw new IllegalArgumentException("Numbers have got too big");

   }

   public static void write_(OutputStream os, int number) throws IOException {

     os.write(number >> 24);

     os.write(number >> 16);

     os.write(number >>  8);

     os.write(number      );

   }

   public void write(OutputStream os, int number) throws IOException {

     write_(os, number);

   }

   public static void set_(byte[] bytes, int offset, int number) {

     bytes[offset    ] = (byte)(number >> 24);

     bytes[offset + 1] = (byte)(number >> 16);

     bytes[offset + 2] = (byte)(number >>  8);

     bytes[offset + 3] = (byte) number       ;

   }

   public void set(byte[] bytes, int offset, int number) {

     set_(bytes, offset, number);

   }

 }