reworked container access (never throw, multi-field access, return values, operator), added package storage

src/main/java/carpet/script/bundled/FileModule.java

@@ -1,9 +1,15 @@
 package carpet.script.bundled;
 
 import carpet.CarpetServer;
+import net.minecraft.nbt.EndTag;
+import net.minecraft.nbt.PositionTracker;
+import net.minecraft.nbt.Tag;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
 import java.io.File;
-import java.io.FileReader;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.util.Locale;
@@ -42,4 +48,76 @@ public class FileModule implements ModuleInterface
     {
         return code;
     }
+
+    @Override
+    public boolean isInternal()
+    {
+        return false;
+    }
+
+    //copied private method from net.minecraft.nbt.NbtIo.read()
+    private static Tag read(File file)
+    {
+        try (DataInputStream dataInput_1 = new DataInputStream(new FileInputStream(file)))
+        {
+            byte byte_1 = dataInput_1.readByte();
+            if (byte_1 == 0)
+            {
+                return new EndTag();
+            }
+            else
+            {
+                dataInput_1.readUTF();
+                Tag tag_1 = Tag.createTag(byte_1);
+                tag_1.read(dataInput_1, 0, PositionTracker.DEFAULT);
+                return tag_1;
+            }
+        }
+        catch (IOException ignored)
+        {
+        }
+        return null;
+    }
+
+    //copied private method from net.minecraft.nbt.NbtIo.write() and client method safe_write
+    private static void write(Tag tag_1, File file)
+    {
+        File file_2 = new File(file.getAbsolutePath() + "_tmp");
+        if (file_2.exists()) file_2.delete();
+
+        try(DataOutputStream dataOutputStream_1 = new DataOutputStream(new FileOutputStream(file_2)))
+        {
+            dataOutputStream_1.writeByte(tag_1.getType());
+            if (tag_1.getType() != 0)
+            {
+                dataOutputStream_1.writeUTF("");
+                tag_1.write(dataOutputStream_1);
+            }
+        }
+        catch (IOException e)
+        {
+            return;
+        }
+        if (file.exists()) file.delete();
+        if (!file.exists()) file_2.renameTo(file);
+    }
+
+    @Override
+    public Tag getData(String file)
+    {
+        File dataFile =CarpetServer.minecraft_server.getLevelStorage().resolveFile(
+                CarpetServer.minecraft_server.getLevelName(), "scripts/"+name+".data"+(file==null?"":"."+file)+".nbt");
+        if (!(dataFile.isFile()))
+            return null;
+        return read(dataFile);
+    }
+
+    @Override
+    public void saveData(String file, Tag globalState)
+    {
+        File dataFile =CarpetServer.minecraft_server.getLevelStorage().resolveFile(
+                CarpetServer.minecraft_server.getLevelName(), "scripts/"+name+".data"+(file==null?"":"."+file)+".nbt");
+        write(globalState, dataFile);
+
+    }
 }

src/main/java/carpet/script/bundled/ModuleInterface.java

@@ -1,7 +1,12 @@
 package carpet.script.bundled;
 
+import net.minecraft.nbt.Tag;
+
 public interface ModuleInterface
 {
     String getName();
     String getCode();
+    default boolean isInternal() {return true; }
+    default Tag getData(String file) {return null; }
+    default void saveData(String file, Tag globalState) {}
 }