use Locale.ROOT for uppercase as well

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/v1_13_1/Spigot_v1_13_R2.java

@@ -64,6 +64,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Supplier;
@@ -365,7 +366,7 @@ public final class Spigot_v1_13_R2 extends CachedBukkitAdapter implements Bukkit
                 property = new BooleanProperty(state.a(), ImmutableList.copyOf(state.d()));
             } else if (state instanceof BlockStateDirection) {
                 property = new DirectionalProperty(state.a(),
-                        (List<Direction>) state.d().stream().map(e -> Direction.valueOf(((INamable) e).getName().toUpperCase())).collect(Collectors.toList()));
+                        (List<Direction>) state.d().stream().map(e -> Direction.valueOf(((INamable) e).getName().toUpperCase(Locale.ROOT))).collect(Collectors.toList()));
             } else if (state instanceof BlockStateEnum) {
                 property = new EnumProperty(state.a(),
                         (List<String>) state.d().stream().map(e -> ((INamable) e).getName()).collect(Collectors.toList()));

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitEntity.java

@@ -34,6 +34,7 @@ import com.sk89q.worldedit.world.entity.EntityTypes;
 import org.bukkit.entity.EntityType;
 
 import java.lang.ref.WeakReference;
+import java.util.Locale;
 
 import javax.annotation.Nullable;
 
@@ -88,7 +89,7 @@ public class BukkitEntity implements Entity {
 
     @Override
     public com.sk89q.worldedit.world.entity.EntityType getType() {
-        return EntityTypes.get(type.getName().toUpperCase());
+        return EntityTypes.get(type.getName().toUpperCase(Locale.ROOT));
     }
 
     @Override

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitPlayer.java

@@ -53,6 +53,7 @@ import org.bukkit.inventory.PlayerInventory;
 
 import javax.annotation.Nullable;
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Map;
 import java.util.UUID;
 
@@ -185,7 +186,7 @@ public class BukkitPlayer extends AbstractPlayerActor {
 
     @Override
     public GameMode getGameMode() {
-        return GameModes.get(player.getGameMode().name().toLowerCase());
+        return GameModes.get(player.getGameMode().name().toLowerCase(Locale.ROOT));
     }
 
     @Override

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -210,7 +210,7 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
     public void setupRegistries() {
         // Biome
         for (Biome biome : Biome.values()) {
-            BiomeType.REGISTRY.register("minecraft:" + biome.name().toLowerCase(), new BiomeType("minecraft:" + biome.name().toLowerCase()));
+            BiomeType.REGISTRY.register("minecraft:" + biome.name().toLowerCase(Locale.ROOT), new BiomeType("minecraft:" + biome.name().toLowerCase(Locale.ROOT)));
         }
         // Block & Item
         for (Material material : Material.values()) {

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/IBukkitAdapter.java

@@ -207,7 +207,7 @@ public interface IBukkitAdapter {
         if (!itemType.getId().startsWith("minecraft:")) {
             throw new IllegalArgumentException("Bukkit only supports Minecraft items");
         }
-        return Material.getMaterial(itemType.getId().substring(10).toUpperCase());
+        return Material.getMaterial(itemType.getId().substring(10).toUpperCase(Locale.ROOT));
     }
 
     /**
@@ -221,7 +221,7 @@ public interface IBukkitAdapter {
         if (!blockType.getId().startsWith("minecraft:")) {
             throw new IllegalArgumentException("Bukkit only supports Minecraft blocks");
         }
-        String id = blockType.getId().substring(10).toUpperCase();
+        String id = blockType.getId().substring(10).toUpperCase(Locale.ROOT);
         return Material.getMaterial(id);
     }
 
@@ -366,7 +366,7 @@ public interface IBukkitAdapter {
             throw new IllegalArgumentException("Bukkit only supports vanilla biomes");
         }
         try {
-            return Biome.valueOf(biomeType.getId().substring(10).toUpperCase());
+            return Biome.valueOf(biomeType.getId().substring(10).toUpperCase(Locale.ROOT));
         } catch (IllegalArgumentException e) {
             return null;
         }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/DefaultBlockParser.java

@@ -181,7 +181,7 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                     }
                     state = LegacyMapper.getInstance().getBlockFromLegacy(id, data);
                 } else {
-                    BlockType type = BlockTypes.get(split[0].toLowerCase());
+                    BlockType type = BlockTypes.get(split[0].toLowerCase(Locale.ROOT));
                     if (type != null) {
                         int data = Integer.parseInt(split[1]);
                         if (data < 0 || data >= 16) {
@@ -247,7 +247,7 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                     state = item.getType().getBlockType().getDefaultState();
                     nbt = item.getNbtData();
                 } else {
-                    BlockType type = BlockTypes.parse(typeString.toLowerCase());
+                    BlockType type = BlockTypes.parse(typeString.toLowerCase(Locale.ROOT));
 
                         if (type != null) {
                             state = type.getDefaultState();
@@ -309,15 +309,15 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
             if (blockAndExtraData.length > 1) {
                 String mobName = blockAndExtraData[1];
                 for (MobType mobType : MobType.values()) {
-                    if (mobType.getName().toLowerCase().equals(mobName.toLowerCase())) {
+                    if (mobType.getName().toLowerCase().equals(mobName.toLowerCase(Locale.ROOT))) {
                         mobName = mobType.getName();
                         break;
                     }
                 }
                 if (!worldEdit.getPlatformManager().queryCapability(Capability.USER_COMMANDS).isValidMobType(mobName)) {
-                    String finalMobName = mobName.toLowerCase();
+                    String finalMobName = mobName.toLowerCase(Locale.ROOT);
                     throw new SuggestInputParseException("Unknown mob type '" + mobName + "'", mobName, () -> Stream.of(MobType.values())
-                                                                                                                    .map(m -> m.getName().toLowerCase())
+                                                                                                                    .map(m -> m.getName().toLowerCase(Locale.ROOT))
                                                                                                                     .filter(s -> s.startsWith(finalMobName))
                                                                                                                     .collect(Collectors.toList()));
                 }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/pattern/BlockCategoryPatternParser.java

@@ -30,6 +30,7 @@ import com.sk89q.worldedit.world.block.BlockCategory;
 import com.sk89q.worldedit.world.block.BlockType;
 
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -49,7 +50,7 @@ public class BlockCategoryPatternParser extends InputParser<Pattern> {
         if (!input.startsWith("##")) {
             return null;
         }
-        String tag = input.substring(2).toLowerCase();
+        String tag = input.substring(2).toLowerCase(Locale.ROOT);
         boolean anyState = false;
         if (tag.startsWith("*")) {
             tag = tag.substring(1);

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/pattern/DefaultPatternParser.java

@@ -49,6 +49,7 @@ import com.sk89q.worldedit.world.block.BlockTypes;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -107,7 +108,7 @@ public class DefaultPatternParser extends FaweParser<Pattern> {
                                 () -> {
                                     if (full.length() == 1) return new ArrayList<>(dispatcher.getPrimaryAliases());
                                     return dispatcher.getAliases().stream().filter(
-                                            s -> s.startsWith(command.toLowerCase())
+                                            s -> s.startsWith(command.toLowerCase(Locale.ROOT))
                                     ).collect(Collectors.toList());
                                 }
                         );

worldedit-core/src/main/java/com/sk89q/worldedit/extent/transform/BlockTransformExtent.java

@@ -50,6 +50,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 /**
@@ -127,7 +128,7 @@ public class BlockTransformExtent extends ResettableExtent {
                 case FACING: {
                     List<Direction> directions = new ArrayList<>();
                     for (Object value : values) {
-                        directions.add(Direction.valueOf(value.toString().toUpperCase()));
+                        directions.add(Direction.valueOf(value.toString().toUpperCase(Locale.ROOT)));
                     }
                     return adapt(directions.toArray(new Direction[0]));
                 }
@@ -331,10 +332,10 @@ public class BlockTransformExtent extends ResettableExtent {
             Object southState = tmp.getState(PropertyKey.SOUTH);
             Object westState = tmp.getState(PropertyKey.WEST);
 
-            tmp = tmp.with(PropertyKey.valueOf(newNorth.name().toUpperCase()), northState);
+            tmp = tmp.with(PropertyKey.valueOf(newNorth.name().toUpperCase(Locale.ROOT)), northState);
-            tmp = tmp.with(PropertyKey.valueOf(newEast.name().toUpperCase()), eastState);
+            tmp = tmp.with(PropertyKey.valueOf(newEast.name().toUpperCase(Locale.ROOT)), eastState);
-            tmp = tmp.with(PropertyKey.valueOf(newSouth.name().toUpperCase()), southState);
+            tmp = tmp.with(PropertyKey.valueOf(newSouth.name().toUpperCase(Locale.ROOT)), southState);
-            tmp = tmp.with(PropertyKey.valueOf(newWest.name().toUpperCase()), westState);
+            tmp = tmp.with(PropertyKey.valueOf(newWest.name().toUpperCase(Locale.ROOT)), westState);
 
             newMaskedId = tmp.getInternalId();
         }

worldedit-core/src/main/java/com/sk89q/worldedit/registry/state/PropertyKey.java

@@ -6,6 +6,7 @@ import com.sk89q.util.ReflectionUtil;
 import com.sk89q.worldedit.world.block.BlockTypes;
 
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Map;
 
 /**
@@ -100,7 +101,7 @@ public enum PropertyKey {
         PropertyKey property = PropertyKey.get(id);
         if (property == null) {
             Fawe.debug("Registering property " + id);
-            property = ReflectionUtils.addEnum(PropertyKey.class, id.toUpperCase());
+            property = ReflectionUtils.addEnum(PropertyKey.class, id.toUpperCase(Locale.ROOT));
             if (property.getId() == null) {
                 try {
                     ReflectionUtils.setFailsafeFieldValue(PropertyKey.class.getDeclaredField("id"), property, property.name().toLowerCase());

worldedit-core/src/main/java/com/sk89q/worldedit/util/command/SimpleDispatcher.java

@@ -35,6 +35,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 
@@ -104,12 +105,12 @@ public class SimpleDispatcher implements Dispatcher {
 
     @Override
     public boolean contains(String alias) {
-        return commands.containsKey(alias.toLowerCase());
+        return commands.containsKey(alias.toLowerCase(Locale.ROOT));
     }
 
     @Override
     public CommandMapping get(String alias) {
-        return commands.get(alias.toLowerCase());
+        return commands.get(alias.toLowerCase(Locale.ROOT));
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/util/command/argument/ArgumentUtils.java

@@ -23,6 +23,7 @@ import com.google.common.collect.Lists;
 
 import java.util.Collection;
 import java.util.List;
+import java.util.Locale;
 
 public final class ArgumentUtils {
 
@@ -35,7 +36,7 @@ public final class ArgumentUtils {
         }
         List<String> suggestions = Lists.newArrayList();
         for (String item : items) {
-            if (item.toLowerCase().startsWith(s)) {
+            if (item.toLowerCase(Locale.ROOT).startsWith(s)) {
                 suggestions.add(item);
             }
         }

worldedit-core/src/main/java/com/sk89q/worldedit/util/command/composition/BranchingCommand.java

@@ -30,6 +30,7 @@ import com.sk89q.worldedit.util.command.argument.CommandArgs;
 import com.sk89q.worldedit.util.command.argument.MissingArgumentException;
 
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 
@@ -55,7 +56,7 @@ public abstract class BranchingCommand<T> implements CommandExecutor<T> {
     public T call(CommandArgs args, CommandLocals locals) throws CommandException {
         try {
             String classifier = args.next();
-            CommandExecutor<? extends T> executor = options.get(classifier.toLowerCase());
+            CommandExecutor<? extends T> executor = options.get(classifier.toLowerCase(Locale.ROOT));
             if (executor != null) {
                 return executor.call(args, locals);
             } else {
@@ -72,7 +73,7 @@ public abstract class BranchingCommand<T> implements CommandExecutor<T> {
     public List<String> getSuggestions(CommandArgs args, CommandLocals locals) throws MissingArgumentException {
         String classifier = args.next();
         try {
-            CommandExecutor<? extends T> executor = options.get(classifier.toLowerCase());
+            CommandExecutor<? extends T> executor = options.get(classifier.toLowerCase(Locale.ROOT));
             if (executor != null) {
                 return executor.getSuggestions(args, locals);
             }

worldedit-core/src/main/java/com/sk89q/worldedit/util/command/parametric/ParametricCallable.java

@@ -43,6 +43,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 
 /**
@@ -348,10 +349,10 @@ public class ParametricCallable extends AParametricCallable {
      */
     private static String generateName(Type type, Annotation classifier, int index) {
         if (classifier != null) {
-            return classifier.annotationType().getSimpleName().toLowerCase();
+            return classifier.annotationType().getSimpleName().toLowerCase(Locale.ROOT);
         } else {
             if (type instanceof Class<?>) {
-                return ((Class<?>) type).getSimpleName().toLowerCase();
+                return ((Class<?>) type).getSimpleName().toLowerCase(Locale.ROOT);
             } else {
                 return "unknown" + index;
             }

worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockTypes.java

@@ -859,7 +859,7 @@ public final class BlockTypes {
         // Get the enum name (remove namespace if minecraft:)
         int propStart = id.indexOf('[');
         String typeName = id.substring(0, propStart == -1 ? id.length() : propStart);
-        String enumName = (typeName.startsWith("minecraft:") ? typeName.substring(10) : typeName).toUpperCase();
+        String enumName = (typeName.startsWith("minecraft:") ? typeName.substring(10) : typeName).toUpperCase(Locale.ROOT);
         BlockType existing = new BlockType(id, internalId, states);
 
 

worldedit-core/src/main/java/com/sk89q/worldedit/world/entity/EntityTypes.java

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.world.entity;
 
 import javax.annotation.Nullable;
+import java.util.Locale;
 
 public class EntityTypes {
 
@@ -162,7 +163,7 @@ public class EntityTypes {
                     }
                     return parse(result.toString());
                 }
-                switch (id.toLowerCase()) {
+                switch (id.toLowerCase(Locale.ROOT)) {
                     case "xp_orb":
                         return EntityTypes.EXPERIENCE_ORB;
                     case "xp_bottle":

worldedit-core/src/main/java/com/sk89q/worldedit/world/item/ItemTypes.java

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.world.registry.LegacyMapper;
 
 import javax.annotation.Nullable;
 import java.util.Collection;
+import java.util.Locale;
 
 public final class ItemTypes {
 
@@ -823,7 +824,7 @@ public final class ItemTypes {
 
     @Nullable
     public static ItemType parse(String input) {
-        input = input.toLowerCase();
+        input = input.toLowerCase(Locale.ROOT);
         if (!Character.isAlphabetic(input.charAt(0))) {
             try {
                 ItemType legacy = LegacyMapper.getInstance().getItemFromLegacy(input);