From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Video <videogamesm12@gmail.com>
Date: Sun, 13 Mar 2022 18:42:07 -0600
Subject: [PATCH] Fixes Knowledge Books causing log spam when invalid data is
 provided


diff --git a/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java b/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
index 5ebc309aed545a4c22970e617519fe916a29fa3c..14a35465e41c9ecb51bea5b084e2637ebd21d295 100644
--- a/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
+++ b/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
@@ -40,9 +40,9 @@ public class KnowledgeBookItem extends Item {
 
                 for (int i = 0; i < listTag.size(); i++) {
                     String string = listTag.getString(i);
-                    Optional<RecipeHolder<?>> optional = recipeManager.byKey(new ResourceLocation(string));
+                    Optional<RecipeHolder<?>> optional = recipeManager.byKey(ResourceLocation.tryParse(string)); // Scissors - Validate resource locations
                     if (!optional.isPresent()) {
-                        LOGGER.error("Invalid recipe: {}", string);
+                        // Scissors - Don't log errors caused by invalid recipes being provided
                         return InteractionResultHolder.fail(itemStack);
                     }
 
@@ -55,7 +55,7 @@ public class KnowledgeBookItem extends Item {
 
             return InteractionResultHolder.sidedSuccess(itemStack, world.isClientSide());
         } else {
-            LOGGER.error("Tag not valid: {}", compoundTag);
+            // Scissors - Don't throw errors into the logs if an NBT compound isn't present or is missing the Recipes tag.
             return InteractionResultHolder.fail(itemStack);
         }
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
index e904bf8b6a7d18a0e846c3b59e2d7f3d6e530e39..65b076b376bf6ab363a3eb62dfa2c96c45624957 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
@@ -41,7 +41,11 @@ public class CraftMetaKnowledgeBook extends CraftMetaItem implements KnowledgeBo
             for (int i = 0; i < pages.size(); i++) {
                 String recipe = pages.getString(i);
 
-                this.addRecipe(CraftNamespacedKey.fromString(recipe));
+                // Scissors start - Don't add recipes with invalid namespaces
+                try {
+                    this.addRecipe(CraftNamespacedKey.fromString(recipe));
+                } catch (Exception ignored) {}
+                // Scissors end
             }
         }
     }