= Updated plugins to each have their own global context

src/core/lua/Plugin.java

@@ -6,29 +6,61 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.stream.Stream;
 
-//To promote flexibility, plugins are lua file with predefined callbacks.
-//They are executed between the initial built-in preprocessing and the command parsing.
+import org.luaj.vm2.Globals;
+import org.luaj.vm2.LuaValue;
+import org.luaj.vm2.lib.jse.JsePlatform;
+
+// To promote flexibility, plugins are lua file with predefined callbacks.
+// They are executed between the initial built-in preprocessing and the command parsing.
+// This class wraps the lua layer - provides all the processing and function calls to the lua binding.
 public class Plugin
 {
 	public Path filepath;
 	public String contents;
+	private Globals globals;
+	private LuaValue func_plugin;
 	
 	public Plugin(Path filepath)
 	{
 		this.filepath = filepath;
 		
-		StringBuilder contentBuilder = new StringBuilder();
 		
+		StringBuilder contentBuilder = new StringBuilder();
+
 		try 
 		{
 			Stream<String> stream = Files.lines(filepath, StandardCharsets.UTF_8);
 			stream.forEach(str -> contentBuilder.append(str).append("\n"));
 			stream.close();
 			contents = contentBuilder.toString();
+			
+			globals = JsePlatform.standardGlobals();
+
+			globals.load(contents).call();
+			func_plugin = globals.get("plugin");
+			
+			String output = null;
 		}
 		catch (IOException e)
 		{
 			PluginLog.Error(e.getMessage());
 		}
 	}
+	
+	public String Run(String args)
+	{
+		try
+		{
+			LuaValue res = func_plugin.call(LuaValue.valueOf(args));
+			
+			if(!res.isnil())
+				return res.toString();
+		}
+		catch(Exception e)
+		{
+			PluginLog.Error("Failed to run plugin from file " + filepath);
+		}
+		
+		return null;
+	}
 }