PaperMC/patches/server/0906-Fixup-NamespacedKey-handling.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Sat, 6 Jan 2024 14:31:00 +0100
Subject: [PATCH] Fixup NamespacedKey handling


diff --git a/src/main/java/org/bukkit/craftbukkit/CraftLootTable.java b/src/main/java/org/bukkit/craftbukkit/CraftLootTable.java
index 90b82ad996b2b85628c9a5ddeef9410150b7f70c..5fd22a80e9d05afbea273471cee991732a9485fd 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftLootTable.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftLootTable.java
@@ -38,7 +38,7 @@ public class CraftLootTable implements org.bukkit.loot.LootTable {
     }
 
     public static org.bukkit.loot.LootTable minecraftToBukkit(ResourceKey<LootTable> minecraft) {
-        return (minecraft == null) ? null : Bukkit.getLootTable(CraftLootTable.minecraftToBukkitKey(minecraft));
+        return (minecraft == null || minecraft.location().getPath().isEmpty()) ? null : Bukkit.getLootTable(CraftLootTable.minecraftToBukkitKey(minecraft)); // Paper - fix some NamespacedKey parsing
     }
 
     public static NamespacedKey minecraftToBukkitKey(ResourceKey<LootTable> minecraft) {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java b/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java
index e23e92331ae305e1cc83a1d478b71a9478f8e8c6..624f627ead8d6a811a5f81ea8a4f2497d3115bbb 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegistry.java
@@ -159,6 +159,19 @@ public class CraftRegistry<B extends Keyed, M> implements Registry<B> {
                 + ", this can happen if a plugin creates its own registry entry with out properly registering it.");
     }
 
+    // Paper start - fixup upstream being dum
+    public static <T extends org.bukkit.Keyed, M> java.util.Optional<T> unwrapAndConvertHolder(final io.papermc.paper.registry.RegistryKey<T> registryKey, final Holder<M> value) {
+        return unwrapAndConvertHolder(io.papermc.paper.registry.RegistryAccess.registryAccess().getRegistry(registryKey), value);
+    }
+
+    public static <T extends org.bukkit.Keyed, M> java.util.Optional<T> unwrapAndConvertHolder(final Registry<T> registry, final Holder<M> value) {
+        if (registry instanceof CraftRegistry<?,?> craftRegistry && craftRegistry.supportsDirectHolders() && value.kind() == Holder.Kind.DIRECT) {
+            return java.util.Optional.of(((CraftRegistry<T, M>) registry).convertDirectHolder(value));
+        }
+        return value.unwrapKey().map(key -> registry.get(CraftNamespacedKey.fromMinecraft(key.location())));
+    }
+    // Paper end - fixup upstream being dum
+
     // Paper - move to PaperRegistries
 
     // Paper - NOTE: As long as all uses of the method below relate to *serialization* via ConfigurationSerializable, it's fine
diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
index 9ab615347e241ac264fb70f43306075907420885..0d04f0a34d1d1894845b720a407f7190ea78d514 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttribute.java
@@ -33,6 +33,7 @@ public class CraftAttribute implements Attribute, Handleable<net.minecraft.world
         string = FieldRename.convertAttributeName(ApiVersion.CURRENT, string);
         string = string.toLowerCase(Locale.ROOT);
         NamespacedKey key = NamespacedKey.fromString(string);
+        if (key == null) return null; // Paper - Fixup NamespacedKey handling
 
         // Now also convert from when keys where saved
         return CraftRegistry.get(Registry.ATTRIBUTE, key, ApiVersion.CURRENT);
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBanner.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBanner.java
index afed8bdb9bd6a135e9b5f7bd9bfc61964cb240f7..bb2d1dddca6bfe719b28df136e80a7c5a339a5ce 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBanner.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBanner.java
@@ -38,7 +38,11 @@ public class CraftBanner extends CraftBlockEntityState<BannerBlockEntity> implem
         if (banner.getPatterns() != null) {
             for (int i = 0; i < banner.getPatterns().layers().size(); i++) {
                 BannerPatternLayers.Layer p = banner.getPatterns().layers().get(i);
-                this.patterns.add(new Pattern(DyeColor.getByWoolData((byte) p.color().getId()), CraftPatternType.minecraftHolderToBukkit(p.pattern())));
+                // Paper start - fix upstream not handling inlined banner pattern
+                java.util.Optional<org.bukkit.block.banner.PatternType> type = org.bukkit.craftbukkit.CraftRegistry.unwrapAndConvertHolder(org.bukkit.Registry.BANNER_PATTERN, p.pattern());
+                if (type.isEmpty()) continue;
+                this.patterns.add(new Pattern(DyeColor.getByWoolData((byte) p.color().getId()), type.get()));
+                // Paper end - fix upstream not handling inlined banner pattern
             }
         }
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPainting.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPainting.java
index bcac1359c667ef1ee46384f9c7a5adf4010d2b08..b1b139b773b37e6ec2afea85c500387d6ba9800e 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPainting.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPainting.java
@@ -16,7 +16,7 @@ public class CraftPainting extends CraftHanging implements Painting {
 
     @Override
     public Art getArt() {
-        return CraftArt.minecraftHolderToBukkit(this.getHandle().getVariant());
+        return org.bukkit.craftbukkit.CraftRegistry.unwrapAndConvertHolder(org.bukkit.Registry.ART, this.getHandle().getVariant()).orElseThrow(() -> new IllegalStateException("Inlined painting variants are not supported yet in the API!")); // Paper
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
index 1c1a2d66d1ebcbe2ded732e759d0f9d471d43b56..eb44c19f6af624df458981e46c73a64358d6e1ce 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBanner.java
@@ -42,7 +42,7 @@ public class CraftMetaBanner extends CraftMetaItem implements BannerMeta {
             for (int i = 0; i < Math.min(patterns.size(), 20); i++) {
                 BannerPatternLayers.Layer p = patterns.get(i);
                 DyeColor color = DyeColor.getByWoolData((byte) p.color().getId());
-                PatternType pattern = CraftPatternType.minecraftHolderToBukkit(p.pattern());
+                PatternType pattern = org.bukkit.craftbukkit.CraftRegistry.unwrapAndConvertHolder(org.bukkit.Registry.BANNER_PATTERN, p.pattern()).orElse(null); // Paper - fix upstream not handling inlined banner pattern
 
                 if (color != null && pattern != null) {
                     this.patterns.add(new Pattern(color, pattern));
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaShield.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaShield.java
index c8eec04685456d89cb41466cddcc3975d0ceeb29..bcd6cc29e4e621805cbd923d747f652ced240c6d 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaShield.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaShield.java
@@ -17,6 +17,7 @@ import org.bukkit.block.BlockState;
 import org.bukkit.block.banner.Pattern;
 import org.bukkit.block.banner.PatternType;
 import org.bukkit.configuration.serialization.DelegateDeserialization;
+import org.bukkit.craftbukkit.CraftRegistry;
 import org.bukkit.craftbukkit.block.CraftBlockStates;
 import org.bukkit.craftbukkit.block.banner.CraftPatternType;
 import org.bukkit.inventory.meta.BlockStateMeta;
@@ -53,7 +54,7 @@ public class CraftMetaShield extends CraftMetaItem implements ShieldMeta, BlockS
             for (int i = 0; i < Math.min(patterns.size(), 20); i++) {
                 BannerPatternLayers.Layer p = patterns.get(i);
                 DyeColor color = DyeColor.getByWoolData((byte) p.color().getId());
-                PatternType pattern = CraftPatternType.minecraftHolderToBukkit(p.pattern());
+                PatternType pattern = CraftRegistry.unwrapAndConvertHolder(io.papermc.paper.registry.RegistryKey.BANNER_PATTERN, p.pattern()).orElse(null); // Paper - fix upstream not being correct
 
                 if (color != null && pattern != null) {
                     this.addPattern(new Pattern(color, pattern));
diff --git a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
index 82a50b06c08b632f77d73745e1fa9bd22dfd950a..f1d8ed4a2b8959873b02d57f6a40323a841f3d7f 100644
--- a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
+++ b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionType.java
@@ -69,6 +69,7 @@ public class CraftPotionType implements PotionType.InternalPotionData {
         string = FieldRename.convertPotionTypeName(ApiVersion.CURRENT, string);
         string = string.toLowerCase(Locale.ROOT);
         NamespacedKey key = NamespacedKey.fromString(string);
+        if (key == null) return null; // Paper - Fixup NamespacedKey handling
 
         // Now also convert from when keys where saved
         return CraftRegistry.get(Registry.POTION, key, ApiVersion.CURRENT);
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
index dc88ba24ed3b0024c39a30c2d90628fc708d63cf..944bed9b6c803df1a312383fed9de7d61e7d2c70 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
@@ -13,7 +13,7 @@ public final class CraftNamespacedKey {
             return null;
         }
         ResourceLocation minecraft = ResourceLocation.tryParse(string);
-        return (minecraft == null) ? null : CraftNamespacedKey.fromMinecraft(minecraft);
+        return (minecraft == null || minecraft.getPath().isEmpty()) ? null : CraftNamespacedKey.fromMinecraft(minecraft); // Paper - Bukkit's parser does not match Vanilla for empty paths
     }
 
     public static NamespacedKey fromString(String string) {