Fix wrong mod loader warning on modern versions of minecraft (#1030)

1 files changed, 37 insertions, 0 deletions

diff --git a/src/main/java/io/github/moulberry/notenoughupdates/loader/ClassLoaderExtUtil.java b/src/main/java/io/github/moulberry/notenoughupdates/loader/ClassLoaderExtUtil.java
new file mode 100644
index 00000000..4c410b3d
--- /dev/null
+++ b/src/main/java/io/github/moulberry/notenoughupdates/loader/ClassLoaderExtUtil.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2024 NotEnoughUpdates contributors
+ *
+ * This file is part of NotEnoughUpdates.
+ *
+ * NotEnoughUpdates is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * NotEnoughUpdates 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.moulberry.notenoughupdates.loader;
+
+import net.minecraft.launchwrapper.LaunchClassLoader;
+
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+class ClassLoaderExtUtil {
+	public static void addClassSourceTwice(LaunchClassLoader classLoader, URL url) throws Exception {
+		classLoader.addURL(url);
+		ClassLoader classLoaderYetAgain = classLoader.getClass().getClassLoader();
+		Method addURL = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
+		addURL.setAccessible(true);
+		addURL.invoke(classLoaderYetAgain, url);
+	}
+
+}