Add external plugin support

src/org/nwapw/abacus/plugin/ClassFinderV2.java

@@ -0,0 +1,51 @@
+package org.nwapw.abacus.plugin;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public class ClassFinderV2 {
+    ArrayList<Class> classes;
+    URL[] urls;
+    public ClassFinderV2(){
+        classes = new ArrayList();
+    }
+    public ArrayList<String> addJar(String path) throws IOException, ClassNotFoundException {
+        //urls = new URL[]{new URL("jar:file:" + path + "!/")};
+        return addJar(new File(path));
+    }
+    public ArrayList<String> addJar(File jarLocation) throws IOException, ClassNotFoundException {
+        String path = jarLocation.getPath();
+        urls = new URL[]{new URL("jar:file:" + path + "!/")};
+        URLClassLoader classLoader = URLClassLoader.newInstance(urls);
+        JarFile jarFolder = new JarFile(jarLocation);
+        Enumeration jarList = jarFolder.entries();
+        ArrayList<String> classNames = new ArrayList();
+        while(jarList.hasMoreElements()){
+            JarEntry tempJar = (JarEntry)jarList.nextElement();
+            if(tempJar.getName().endsWith(".class")){
+                //System.out.println(tempJar.getName());
+                classNames.add(tempJar.getName());
+                classes.add(classLoader.loadClass(tempJar.getName().replace('/','.').substring(0,tempJar.getName().length()-6)));
+            }
+        }
+        return classNames;
+    }
+    public ArrayList<Class> getClasses(){
+        return classes;
+    }
+    public Class getClass(int number){
+        return classes.get(number);
+    }
+    public void delClasses(){
+        classes=new ArrayList();
+    }
+    public int classCount(){
+        return classes.size();
+    }
+}