Added Function that allows developers to manually fix nbts

src/main/java/ru/bclib/api/datafixer/DataFixerAPI.java

@@ -463,7 +463,7 @@ public class DataFixerAPI {
 			e.printStackTrace();
 		}
 	}
-
+	
 	static CompoundTag patchConfTag = null;
 	static CompoundTag getPatchData(){
 		if (patchConfTag==null) {

src/main/java/ru/bclib/api/datafixer/MigrationProfile.java

@@ -12,6 +12,7 @@ import ru.bclib.util.ModUtil;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedList;
@@ -34,7 +35,7 @@ public class MigrationProfile {
 	private boolean didRunPrePatch;
 	private Exception prePatchException;
 	
-	MigrationProfile(CompoundTag config) {
+	MigrationProfile(CompoundTag config, boolean applyAll) {
 		this.config = config;
 		
 		this.mods = Collections.unmodifiableSet(Patch.getALL()
@@ -55,7 +56,7 @@ public class MigrationProfile {
 					 List<String> paths = patch.getWorldDataIDPaths();
 					 if (paths!=null) worldDataIDPaths.put(modID, paths);
 
-					 if (currentPatchLevel(modID) < patch.level) {
+					 if (applyAll || currentPatchLevel(modID) < patch.level) {
 						 replacements.putAll(patch.getIDReplacements());
 						 if (patch.getLevelDatPatcher()!=null)
 							 levelPatches.add(patch.getLevelDatPatcher());
@@ -75,6 +76,53 @@ public class MigrationProfile {
 		this.worldDataPatchers = Collections.unmodifiableList(worldDataPatches);
 	}
 	
+	/**
+	 * This method is supposed to be used by developers to apply id-patches to custom nbt structures. It is only
+	 * available in Developer-Mode
+	 *
+	 */
+	public static void fixCustomFolder(File dir){
+		if (!BCLib.isDevEnvironment()) return;
+		MigrationProfile profile = Patch.createMigrationData();
+		List<File> nbts = getAllNbts(dir, null);
+		nbts.parallelStream().forEach((file) -> {
+			DataFixerAPI.LOGGER.info("Loading NBT " + file);
+			try {
+				CompoundTag root = NbtIo.readCompressed(file);
+				boolean[] changed = {false};
+				if (root.contains("palette")){
+					ListTag items = root.getList("palette", Tag.TAG_COMPOUND);
+					items.forEach(inTag -> {
+						CompoundTag tag = (CompoundTag)inTag;
+						changed[0] |= profile.replaceStringFromIDs(tag, "Name");
+					});
+				}
+				
+				if (changed[0]){
+					DataFixerAPI.LOGGER.info("Writing NBT " + file);
+					NbtIo.writeCompressed(root, file);
+				}
+			}
+			catch (IOException e) {
+				e.printStackTrace();
+			}
+		});
+	}
+	
+	private static List<File> getAllNbts(File dir, List<File> list) {
+		if (list == null) {
+			list = new ArrayList<>();
+		}
+		for (File file : dir.listFiles()) {
+			if (file.isDirectory()) {
+				getAllNbts(file, list);
+			} else if (file.isFile() && file.getName().endsWith(".nbt")) {
+				list.add(file);
+			}
+		}
+		return list;
+	}
+	
 	final public CompoundTag getLevelDat(File levelBaseDir){
 		if (level == null || this.levelBaseDir==null || !this.levelBaseDir.equals(levelBaseDir)){
 			runPrePatches(levelBaseDir);
@@ -125,12 +173,13 @@ public class MigrationProfile {
 	final public void markApplied() {
 		for (String modID : mods) {
 			DataFixerAPI.LOGGER.info("Updating Patch-Level for '{}' from {} to {}", modID, ModUtil.convertModVersion(currentPatchLevel(modID)), ModUtil.convertModVersion(Patch.maxPatchLevel(modID)));
-			config.putString(modID, Patch.maxPatchVersion(modID));
+			if (config!=null)
+				config.putString(modID, Patch.maxPatchVersion(modID));
 		}
 	}
 	
 	public String currentPatchVersion(@NotNull String modID) {
-		if (!config.contains(modID)) return "0.0.0";
+		if (config==null || !config.contains(modID)) return "0.0.0";
 		return config.getString(modID);
 	}
 	

src/main/java/ru/bclib/api/datafixer/Patch.java

@@ -151,12 +151,20 @@ public abstract class Patch {
 	 * <p>
 	 * A {@link #Patch} with a given {@link #level} is only included if the patch-level of the
 	 * world is less
-	 * @param config The current patch-level configuration
+	 * @param config The current patch-level configuration*
-	 * @param levelBaseDir The location of the level
 	 * @return a new {@link MigrationProfile} Object.
 	 */
 	static MigrationProfile createMigrationData(CompoundTag config) {
-		return new MigrationProfile(config);
+		return new MigrationProfile(config, false);
+	}
+	
+	/**
+	 * This method is supposed to be used by developers to apply id-patches to custom nbt structures. It is only
+	 * available in Developer-Mode
+	 *
+	 */
+	static MigrationProfile createMigrationData() {
+		return new MigrationProfile(null, true);
 	}
 
 	/**