Adds optional ability to reforge anvils #15

src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java

@@ -61,4 +61,17 @@ public final class ItemHelper {
         return reforgeAbleMaterials;
     }
 
+    /**
+     * Checks whether the given material is an anvil
+     *
+     * @param material       <p>The material to check</p>
+     * @param requireDamaged <p>Whether only a damaged anvil should count</p>
+     * @return <p>True if the given material is an anvil</p>
+     */
+    public static boolean isAnvil(Material material, boolean requireDamaged) {
+        boolean isDamagedAnvil = material == Material.CHIPPED_ANVIL || material == Material.DAMAGED_ANVIL;
+        boolean isAnvil = isDamagedAnvil || material == Material.ANVIL;
+        return (requireDamaged && isDamagedAnvil) || (!requireDamaged && isAnvil);
+    }
+
 }