1 files changed, 54 insertions, 0 deletions
diff --git a/libraries/launcher/org/prismlauncher/utils/LegacyUtils.java b/libraries/launcher/org/prismlauncher/utils/LegacyUtils.java
new file mode 100644
index 00000000..7607d731
--- /dev/null
+++ b/libraries/launcher/org/prismlauncher/utils/LegacyUtils.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2012-2021 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.prismlauncher.utils;
+
+
+import java.io.File;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+
+
+public final class LegacyUtils {
+    
+    private LegacyUtils() {
+    }
+    
+    /**
+     * Finds a field that looks like a Minecraft base folder in a supplied class
+     *
+     * @param clazz the class to scan
+     */
+    public static Field getMinecraftGameDirField(Class<?> clazz) {
+        // Field we're looking for is always
+        // private static File obfuscatedName = null;
+        for (Field field : clazz.getDeclaredFields()) {
+            // Has to be File
+            if (field.getType() != File.class)
+                continue;
+            
+            // And Private Static.
+            if (!Modifier.isStatic(field.getModifiers()) || !Modifier.isPrivate(field.getModifiers()))
+                continue;
+            
+            return field;
+        }
+        
+        return null;
+    }
+    
+}
+