Copy Block

Block b = wo.getBlockAt(ox+i,oy+j,oz+k);
Block nb = wo.getBlockAt(nx+i,ny+j,nz+k);
nb.setType(b.getType());
if (b.getType()!=Material.AIR) {
    nb.setData(b.getData());
    ///nb.getState().setData(b.getState().getData());
    BlockState bs = b.getState();
    BlockState nbs = nb.getState();
    nbs.setType(bs.getType());
    nbs.setData(bs.getData());
    MaterialData md = bs.getData();
    MaterialData nmd = nbs.getData();
    nmd.setData(md.getData());
    if (bs instanceof Sign) {
        Sign s = (Sign) bs;
        Sign ns = (Sign) nbs;
        for(int z=0;z<4;z++) {
            ns.setLine(z,s.getLine(z));
        }
        ns.setData(s.getData());
        //neither setLine nor setData successfully copy the text on the sign.
        //however, the sign's direction is properly copied
    }
    if (bs instanceof RedstoneTorch) {
        //to-do
        //the torches direction is not properly copied and thus they pop off the wall
    }
}