[1.8] Apply Vanilla Enchanted Book to Custom Shears in Anvil

public class classRubyShears extends ItemShears {

  protected static final Item.ToolMaterial toolMaterial = classNetherGemMod.toolRuby;

  protected static final float efficiencyOnProperMaterial = toolMaterial.getEfficiencyOnProperMaterial ();

  public classRubyShears(String name) {

    super ();

    this.setUnlocalizedName (name);

    this.setMaxDamage (toolMaterial.getMaxUses ());

    classNetherGemMod.regItem (this); // set texture & maybe tab, then register

  }

  /**

  * Return true if anvil can repair damage on item in stack1 using material item in stack2.

  * This does not enable book application. On the contrary, returning true precludes magic processing,

  * so NEVER return true for enchanted books in stack2

  */

  @Override

  public boolean getIsRepairable(ItemStack tool, ItemStack gem) {

    return gem.getItem () == classNetherGemMod.itemRuby;

  }

  @Override

  public int getItemEnchantability() {

    return this.toolMaterial.getEnchantability ();      // Enchantable on a crafting table

  }

  /**

  * Allow or forbid the specific book/item combination as an anvil enchant

  *

  * @param stack The item

  * @param book The book

  * @return if the enchantment is allowed

  */

  public boolean isBookEnchantable(ItemStack stack, ItemStack book) {

    NBTTagList enchants = Items.enchanted_book.getEnchantments (book);

    if (enchants != null) {

      for (int i = 0; i < enchants.tagCount (); i++ ) {

        short enchId = enchants.getCompoundTagAt (i).getShort ("id");

        switch (enchId) {

          case 32:

          case 33:

          case 34:

          case 35:

          case 70:

            return true;

        }

        if (enchId == classNetherGemMod.smartHarvest.effectId) return true; // Not constant enough to use inside switch

      }

    }

    return false;

  }

}