From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Telesphoreo <me@telesphoreo.me>
Date: Sun, 5 May 2024 12:47:29 -0500
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 635936aaac2426de05f0450f10815b29b52ca617..0b122b281c195ca47e7eeb27be29bffd916a8535 100644
--- a/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
+++ b/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
@@ -38,9 +38,9 @@ public class KnowledgeBookItem extends Item {
                 List<RecipeHolder<?>> list2 = new ArrayList<>(list.size());
 
                 for (ResourceLocation resourceLocation : list) {
-                    Optional<RecipeHolder<?>> optional = recipeManager.byKey(resourceLocation);
+                    Optional<RecipeHolder<?>> optional = recipeManager.byKey(ResourceLocation.tryParse(resourceLocation.getNamespace())); // Scissors - Validate resource location
                     if (!optional.isPresent()) {
-                        LOGGER.error("Invalid recipe: {}", resourceLocation);
+                        // Scissors - don't log errors caused by invalid recipes being provided
                         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 20638aa593e0a6c78e4bfdb936e69f3d36e18f4e..00b877fb43a8793a0f07580be93d026b624ad011 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
@@ -38,7 +38,12 @@ public class CraftMetaKnowledgeBook extends CraftMetaItem implements KnowledgeBo
             for (int i = 0; i < pages.size(); i++) {
                 ResourceLocation recipe = pages.get(i);
 
-                this.addRecipe(CraftNamespacedKey.fromMinecraft(recipe));
+                // Scissors start - Don't add recipes with invalid namespaces
+                try {
+                    this.addRecipe(CraftNamespacedKey.fromMinecraft(recipe));
+                } catch (Exception ignored)
+                {}
+                // Scissors end
             }
         });
     }