Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

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

1 files changed, 84 insertions, 0 deletions

diff --git a/meshmc/libraries/classparser/src/membuffer.h b/meshmc/libraries/classparser/src/membuffer.h
new file mode 100644
index 0000000000..bbfc1c3984
--- /dev/null
+++ b/meshmc/libraries/classparser/src/membuffer.h
@@ -0,0 +1,84 @@
+/* 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/>.
+ */
+
+#pragma once
+#include <stdint.h>
+#include <string>
+#include <vector>
+#include <exception>
+#include "javaendian.h"
+
+namespace util
+{
+	class membuffer
+	{
+	  public:
+		membuffer(char* buffer, std::size_t size)
+		{
+			current = start = buffer;
+			end = start + size;
+		}
+		~membuffer()
+		{
+			// maybe? possibly? left out to avoid confusion. for now.
+			// delete start;
+		}
+		/**
+		 * Read some value. That's all ;)
+		 */
+		template <class T> void read(T& val)
+		{
+			val = *(T*)current;
+			current += sizeof(T);
+		}
+		/**
+		 * Read a big-endian number
+		 * valid for 2-byte, 4-byte and 8-byte variables
+		 */
+		template <class T> void read_be(T& val)
+		{
+			val = util::bigswap(*(T*)current);
+			current += sizeof(T);
+		}
+		/**
+		 * Read a string in the format:
+		 * 2B length (big endian, unsigned)
+		 * length bytes data
+		 */
+		void read_jstr(std::string& str)
+		{
+			uint16_t length = 0;
+			read_be(length);
+			str.append(current, length);
+			current += length;
+		}
+		/**
+		 * Skip N bytes
+		 */
+		void skip(std::size_t N)
+		{
+			current += N;
+		}
+
+	  private:
+		char *start, *end, *current;
+	};
+} // namespace util