content: package net.minecraft.item.crafting;
  
  import net.minecraft.init.Items;
  import net.minecraft.inventory.InventoryCrafting;
  import net.minecraft.item.ItemStack;
  import net.minecraft.world.World;
  
  public class RecipesMapCloning implements IRecipe {
      public boolean matches(InventoryCrafting inv, World worldIn) {
          int i = 0;
          ItemStack itemstack = null;
  
          for (int j = 0; j < inv.getSizeInventory(); ++j) {
              ItemStack itemstack1 = inv.getStackInSlot(j);
  
              if (itemstack1 != null) {
                  if (itemstack1.getItem() == Items.filled_map) {
                      if (itemstack != null) {
                          return false;
                      }
  
                      itemstack = itemstack1;
                  } else {
                      if (itemstack1.getItem() != Items.map) {
                          return false;
                      }
  
                      ++i;
                  }
              }
          }
  
          return itemstack != null && i > 0;
      }
  
      public ItemStack getCraftingResult(InventoryCrafting inv) {
          int i = 0;
          ItemStack itemstack = null;
  
          for (int j = 0; j < inv.getSizeInventory(); ++j) {
              ItemStack itemstack1 = inv.getStackInSlot(j);
  
              if (itemstack1 != null) {
                  if (itemstack1.getItem() == Items.filled_map) {
                      if (itemstack != null) {
                          return null;
                      }
  
                      itemstack = itemstack1;
                  } else {
                      if (itemstack1.getItem() != Items.map) {
                          return null;
                      }
  
                      ++i;
                  }
              }
          }
  
          if (itemstack != null && i >= 1) {
              ItemStack itemstack2 = new ItemStack(Items.filled_map, i + 1, itemstack.getMetadata());
  
              if (itemstack.hasDisplayName()) {
                  itemstack2.setStackDisplayName(itemstack.getDisplayName());
              }
  
              return itemstack2;
          } else {
              return null;
          }
      }
  
      public int getRecipeSize() {
          return 9;
      }
  
      public ItemStack getRecipeOutput() {
          return null;
      }
  
      public ItemStack[] getRemainingItems(InventoryCrafting inv) {
          ItemStack[] aitemstack = new ItemStack[inv.getSizeInventory()];
  
          for (int i = 0; i < aitemstack.length; ++i) {
              ItemStack itemstack = inv.getStackInSlot(i);
  
              if (itemstack != null && itemstack.getItem().hasContainerItem()) {
                  aitemstack[i] = new ItemStack(itemstack.getItem().getContainerItem());
              }
          }
  
          return aitemstack;
      }
  }
  