Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 133 insertions, 0 deletions

diff --git a/meshmc/launcher/minecraft/launch/ExtractNatives.cpp b/meshmc/launcher/minecraft/launch/ExtractNatives.cpp
new file mode 100644
index 0000000000..706820468b
--- /dev/null
+++ b/meshmc/launcher/minecraft/launch/ExtractNatives.cpp
@@ -0,0 +1,133 @@
+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ *  This file incorporates work covered by the following copyright and
+ *  permission notice:
+ *
+ * Copyright 2013-2021 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.
+ */
+
+#include "ExtractNatives.h"
+#include <minecraft/MinecraftInstance.h>
+#include <launch/LaunchTask.h>
+
+#include "MMCZip.h"
+#include "FileSystem.h"
+#include <QDir>
+
+#ifdef major
+#undef major
+#endif
+#ifdef minor
+#undef minor
+#endif
+
+static QString replaceSuffix(QString target, const QString& suffix,
+							 const QString& replacement)
+{
+	if (!target.endsWith(suffix)) {
+		return target;
+	}
+	target.resize(target.length() - suffix.length());
+	return target + replacement;
+}
+
+static bool unzipNatives(QString source, QString targetFolder,
+						 bool applyJnilibHack, bool nativeOpenAL,
+						 bool nativeGLFW)
+{
+	QDir directory(targetFolder);
+	QStringList entries = MMCZip::listEntries(source);
+	if (entries.isEmpty()) {
+		return false;
+	}
+	for (const auto& name : entries) {
+		auto lowercase = name.toLower();
+		if (nativeGLFW && name.contains("glfw")) {
+			continue;
+		}
+		if (nativeOpenAL && name.contains("openal")) {
+			continue;
+		}
+		// Skip directories
+		if (name.endsWith('/'))
+			continue;
+
+		QString outName = name;
+		if (applyJnilibHack) {
+			outName = replaceSuffix(outName, ".jnilib", ".dylib");
+		}
+		QString absFilePath = directory.absoluteFilePath(outName);
+		if (!MMCZip::extractRelFile(source, name, absFilePath)) {
+			return false;
+		}
+	}
+	return true;
+}
+
+void ExtractNatives::executeTask()
+{
+	auto instance = m_parent->instance();
+	std::shared_ptr<MinecraftInstance> minecraftInstance =
+		std::dynamic_pointer_cast<MinecraftInstance>(instance);
+	auto toExtract = minecraftInstance->getNativeJars();
+	if (toExtract.isEmpty()) {
+		emitSucceeded();
+		return;
+	}
+	auto settings = minecraftInstance->settings();
+	bool nativeOpenAL = settings->get("UseNativeOpenAL").toBool();
+	bool nativeGLFW = settings->get("UseNativeGLFW").toBool();
+
+	auto outputPath = minecraftInstance->getNativePath();
+	auto javaVersion = minecraftInstance->getJavaVersion();
+	bool jniHackEnabled = javaVersion.major() >= 8;
+	for (const auto& source : toExtract) {
+		if (!unzipNatives(source, outputPath, jniHackEnabled, nativeOpenAL,
+						  nativeGLFW)) {
+			const char* reason = QT_TR_NOOP(
+				"Couldn't extract native jar '%1' to destination '%2'");
+			emit logLine(QString(reason).arg(source, outputPath),
+						 MessageLevel::Fatal);
+			emitFailed(tr(reason).arg(source, outputPath));
+		}
+	}
+	emitSucceeded();
+}
+
+void ExtractNatives::finalize()
+{
+	auto instance = m_parent->instance();
+	QString target_dir = FS::PathCombine(instance->instanceRoot(), "natives/");
+	QDir dir(target_dir);
+	dir.removeRecursively();
+}