Merge pull request #520 from icelimetea/refactor-java-launcher-v2

1 files changed, 49 insertions, 0 deletions

diff --git a/libraries/launcher/org/multimc/utils/Utils.java b/libraries/launcher/org/multimc/utils/Utils.java
new file mode 100644
index 00000000..416eff26
--- /dev/null
+++ b/libraries/launcher/org/multimc/utils/Utils.java
@@ -0,0 +1,49 @@
+/*
+ * 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.multimc.utils;
+
+import java.io.File;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+
+public final class Utils {
+
+    private Utils() {}
+
+    /**
+     * Finds a field that looks like a Minecraft base folder in a supplied class
+     *
+     * @param clazz the class to scan
+     */
+    public static Field getMinecraftBaseDirField(Class<?> clazz) {
+        for (Field f : clazz.getDeclaredFields()) {
+            // Has to be File
+            if (f.getType() != File.class)
+                continue;
+
+            // And Private Static.
+            if (!Modifier.isStatic(f.getModifiers()) || !Modifier.isPrivate(f.getModifiers()))
+                continue;
+
+            return f;
+        }
+
+        return null;
+    }
+
+}
+