Javascript plugin support

src/main/java/the/bytecode/club/bytecodeviewer/gui/resourceviewer/viewer/FileViewer.java

@@ -92,7 +92,9 @@ public class FileViewer extends ResourceViewer
                     nameLowerCase.endsWith(".gif") || nameLowerCase.endsWith(".tif") || nameLowerCase.endsWith(".bmp"))
             {
                 canRefresh = true;
+                
                 image = MiscUtils.loadImage(image, contents); //gifs fail because of this
+                
                 mainPanel.add(new ImageJLabel(image), BorderLayout.CENTER);
                 mainPanel.addMouseWheelListener(e ->
                 {

src/main/java/the/bytecode/club/bytecodeviewer/plugin/PluginManager.java

@@ -7,11 +7,7 @@ import java.util.Set;
 import javax.swing.filechooser.FileFilter;
 import the.bytecode.club.bytecodeviewer.BytecodeViewer;
 import the.bytecode.club.bytecodeviewer.api.Plugin;
-import the.bytecode.club.bytecodeviewer.plugin.strategies.CompiledJavaPluginLaunchStrategy;
+import the.bytecode.club.bytecodeviewer.plugin.strategies.*;
-import the.bytecode.club.bytecodeviewer.plugin.strategies.GroovyPluginLaunchStrategy;
-import the.bytecode.club.bytecodeviewer.plugin.strategies.JavaPluginLaunchStrategy;
-import the.bytecode.club.bytecodeviewer.plugin.strategies.PythonPluginLaunchStrategy;
-import the.bytecode.club.bytecodeviewer.plugin.strategies.RubyPluginLaunchStrategy;
 import the.bytecode.club.bytecodeviewer.util.MiscUtils;
 
 /***************************************************************************
@@ -47,9 +43,11 @@ public final class PluginManager {
     private static final PluginFileFilter filter = new PluginFileFilter();
     private static Plugin pluginInstance;
 
-    static {
+    static
+    {
         launchStrategies.put("jar", new CompiledJavaPluginLaunchStrategy());
         launchStrategies.put("java", new JavaPluginLaunchStrategy());
+        launchStrategies.put("js", new JavascriptPluginLaunchStrategy());
 
         GroovyPluginLaunchStrategy groovy = new GroovyPluginLaunchStrategy();
         launchStrategies.put("gy", groovy);
@@ -85,21 +83,19 @@ public final class PluginManager {
      * @param f the file of the plugin
      * @throws Exception
      */
-    public static void runPlugin(File f) throws Throwable {
+    public static void runPlugin(File f) throws Throwable
+    {
         String ext = f.getName().substring(f.getName().lastIndexOf('.') + 1);
         PluginLaunchStrategy strategy = launchStrategies.get(ext);
 
-        if (strategy == null) {
+        if (strategy == null)
-            throw new RuntimeException(String.format("No launch strategy for extension %s (%s)", ext,
+            throw new RuntimeException(String.format("No launch strategy for extension %s (%s)", ext, f.getAbsolutePath()));
-                    f.getAbsolutePath()));
-        }
 
         Plugin p = strategy.run(f);
 
-        if (p != null) {
+        if (p != null)
             runPlugin(p);
     }
-    }
 
     public static void register(String name, PluginLaunchStrategy strat) {
         launchStrategies.put(name, strat);
@@ -113,8 +109,8 @@ public final class PluginManager {
         return filter;
     }
 
-    public static class PluginFileFilter extends FileFilter {
+    public static class PluginFileFilter extends FileFilter
-
+    {
         @Override
         public boolean accept(File f) {
             if (f.isDirectory())

src/main/java/the/bytecode/club/bytecodeviewer/plugin/strategies/JavascriptPluginLaunchStrategy.java

@@ -0,0 +1,50 @@
+package the.bytecode.club.bytecodeviewer.plugin.strategies;
+
+import the.bytecode.club.bytecodeviewer.api.Plugin;
+import the.bytecode.club.bytecodeviewer.plugin.PluginLaunchStrategy;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import java.io.File;
+import java.io.FileReader;
+import java.io.Reader;
+
+/***************************************************************************
+ * Bytecode Viewer (BCV) - Java & Android Reverse Engineering Suite        *
+ * Copyright (C) 2014 Kalen 'Konloch' Kinloch - http://bytecodeviewer.com  *
+ *                                                                         *
+ * This program is free software: you can redistribute it and/or modify    *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation, either version 3 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+ ***************************************************************************/
+
+/**
+ * @author Konloch
+ * @author Bibl (don't ban me pls)
+ * @since 06/25/2021
+ */
+public class JavascriptPluginLaunchStrategy implements PluginLaunchStrategy {
+
+    @Override
+    public Plugin run(File file) throws Throwable {
+        ScriptEngineManager manager = new ScriptEngineManager();
+        ScriptEngine engine = manager.getEngineByName("rhino");
+
+        if (engine == null)
+            throw new Exception("Cannot find Rhino script engine! Please contact Konloch.");
+
+        Reader reader = new FileReader(file);
+        engine.eval(reader);
+
+        return (Plugin) engine.eval(file.getName().replace(".js", "") + ".new");
+    }
+}