How to get an NBT attribute using this lib?

I'm trying to get an NBT attribute from an ItemStack, but whatever I tried using using this library has resulted in an exception.

I'm using this: http://bukkit.org/threads/library-edit-or-create-nbt-tags-with-a-compact-class-no-obc-nms.178464/

I have the "Attributes" class and the "NbtFactory" class.

I want to get the attribute "generic.attackDamage" on a player's item in hand.

Code:

@EventHandler
    public void interactDamage(PlayerInteractEvent e) {
        if(e.getAction() == Action.LEFT_CLICK_AIR || e.getAction() == Action.LEFT_CLICK_BLOCK) {
            if(condition1) {
                Utils.echo("Called");
                Player p = e.getPlayer();
                NbtCompound other = NbtFactory.fromItemTag(NbtFactory.getCraftItemStack(p.getItemInHand()));
                Utils.echo((int) other.getPath("generic.attackDamage") + ""); //Utils.echo is basically Bukkit.getLogger().info(), but just faster for me to type because I do a lot of debugging.
             
                
            }
        }
    }

I would like to try to avoid using NMS for such a small thing like this. How do I accomplish this?

 

post please. You should also try contacting the creator of that resource.

 

As the next line says:

 

Yes, but I'm not the creator.

 

He was last seen a week ago. I'm hoping someone has used that library and knows how to work it OR someone has another idea on how to get an attribute from an itemstack.

@Comphenix

EDIT:

As much as I hated writing it, this is what I'm using now until I get a better method:

Code:

public static double itemToDamageValue(ItemStack i, Player damager) {
        Material m = i.getType();
       
        double damage = 1D;
        if (m == Material.DIAMOND_SWORD) {
            damage = 8;
        }
        if (m == Material.DIAMOND_AXE) {
            damage = 7;
        }
        if (m == Material.DIAMOND_PICKAXE) {
            damage = 6;
        }
        if (m == Material.DIAMOND_SPADE) {
            damage = 5;
        }
        if (m == Material.IRON_SWORD) {
            damage = 7;
        }
        if (m == Material.IRON_AXE) {
            damage = 6;
        }
        if (m == Material.IRON_PICKAXE) {
            damage = 5;
        }
        if (m == Material.IRON_SPADE) {
            damage = 4;
        }
        if (m == Material.STONE_SWORD) {
            damage = 6;
        }
        if (m == Material.STONE_AXE) {
            damage = 5;
        }
        if (m == Material.STONE_PICKAXE) {
            damage = 4;
        }
        if (m == Material.STONE_SPADE) {
            damage = 3;
        }
        if (m == Material.GOLD_SWORD || m == Material.WOOD_SWORD) {
            damage = 5;
        }
        if (m == Material.GOLD_AXE || m == Material.WOOD_AXE) {
            damage = 4;
        }
        if (m == Material.GOLD_PICKAXE || m == Material.WOOD_PICKAXE) {
            damage = 3;
        }
        if (m == Material.GOLD_SPADE || m == Material.WOOD_PICKAXE) {
            damage = 2;
        }
        //Basic Critical Hit Detection
        if(damager.getWorld().getBlockAt(damager.getLocation().subtract(0,1,0)).getType() == Material.AIR) {
            damage = damage * 1.5;
        }

        return damage;
    }