Added test class grabber

Author: DustinRepo

src/main/java/me/dustin/jex/feature/mod/core/FeatureManager.java

@@ -1,5 +1,6 @@
 package me.dustin.jex.feature.mod.core;
 
+import me.dustin.jex.helper.file.ClassHelper;
 import org.reflections.Reflections;
 
 import java.util.ArrayList;
@@ -14,7 +15,12 @@ public void initializeFeatureManager() {
 
         //TODO: better method of doing this without a library
         Reflections reflections = new Reflections("me.dustin.jex.feature.mod.impl");
-
+        ArrayList<Class<?>> classes = new ArrayList<>();
+        try {//works in intellij but not when built
+            classes = ClassHelper.INSTANCE.getClassesOther("me.dustin.jex.feature.mod.impl", Feature.class);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
         Set<Class<? extends Feature>> allClasses = reflections.getSubTypesOf(Feature.class);
         allClasses.forEach(clazz -> {
             try {

src/main/java/me/dustin/jex/helper/file/ClassHelper.java

@@ -4,13 +4,64 @@
 import com.google.common.reflect.ClassPath;
 import me.dustin.jex.JexClient;
 
+import java.io.File;
 import java.io.IOException;
+import java.net.URISyntaxException;
+import java.net.URL;
 import java.util.ArrayList;
+import java.util.Enumeration;
 import java.util.List;
 
 public enum ClassHelper {
     INSTANCE;
 
+    public ArrayList<Class<?>> getClassesOther(String packageName, Class<?> assignableFrom) throws IOException, ClassNotFoundException, URISyntaxException {
+        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        assert classLoader != null;
+        String path = packageName.replace('.', '/');
+        Enumeration<URL> resources = classLoader.getResources(path);
+        List<File> dirs = new ArrayList<File>();
+        while (resources.hasMoreElements()) {
+            URL resource = resources.nextElement();
+            try {
+                dirs.add(new File(resource.toURI()));
+            } catch (IllegalArgumentException e) {
+                dirs.add(new File(resource.getFile()));
+            }
+        }
+        ArrayList<Class<?>> classes = new ArrayList<>();
+        for (File directory : dirs) {
+            classes.addAll(findClasses(directory, packageName, assignableFrom));
+        }
+        ArrayList<Class<?>> removedDupes = new ArrayList<>();
+        for (Class<?> clazz : classes) {
+            if (!removedDupes.contains(clazz))
+                removedDupes.add(clazz);
+        }
+        return removedDupes;
+    }
+
+    private static List<Class<?>> findClasses(File directory, String packageName, Class<?> assignableFrom) throws ClassNotFoundException {
+        List<Class<?>> classes = new ArrayList<>();
+        if (!directory.exists()) {
+            return classes;
+        }
+        File[] files = directory.listFiles();
+        assert files != null;
+        for (File file : files) {
+            if (file.isDirectory()) {
+                assert !file.getName().contains(".");
+                classes.addAll(findClasses(file, packageName + "." + file.getName(), assignableFrom));
+            } else if (file.getName().endsWith(".class")) {
+                Class<?> clazz = Class.forName(packageName + '.' + file.getName().substring(0, file.getName().length() - 6));
+                if (assignableFrom.isAssignableFrom(clazz))
+                    classes.add(clazz);
+            } else {
+            }
+        }
+        return classes;
+    }
+
     @SuppressWarnings("UnstableApiUsage")
     public List<Class<?>> getClasses(String packageName, Class<?> assignableFrom) {
         List<Class<?>> classes = new ArrayList<>();