From 3c1166c45e3be1dc44f0ea83accb0408a24b2751 Mon Sep 17 00:00:00 2001
From: Sestain <35299377+sestain@users.noreply.github.com>
Date: Fri, 27 Mar 2026 21:59:35 +0200
Subject: Added support for Big-Endian DLCs (#1291)

* Added support for Big-Endian DLCs

* Remove unused variable

* Remove the things made for other PR
---
 Minecraft.Client/Common/DLC/DLCManager.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'Minecraft.Client/Common/DLC/DLCManager.h')

diff --git a/Minecraft.Client/Common/DLC/DLCManager.h b/Minecraft.Client/Common/DLC/DLCManager.h
index d4dd2508..7191ab0b 100644
--- a/Minecraft.Client/Common/DLC/DLCManager.h
+++ b/Minecraft.Client/Common/DLC/DLCManager.h
@@ -94,6 +94,30 @@ public:
 	bool readDLCDataFile(DWORD &dwFilesProcessed, const string &path, DLCPack *pack, bool fromArchive = false);
 	DWORD retrievePackIDFromDLCDataFile(const string &path, DLCPack *pack);
 
+	static unsigned short SwapInt16(unsigned short value) {
+		return (value >> 8) | (value << 8);
+	}
+	
+	static unsigned int SwapInt32(unsigned int value) {
+		return ((value & 0xFF) << 24) |
+			((value & 0xFF00) << 8) |
+			((value & 0xFF0000) >> 8) |
+			((value & 0xFF000000) >> 24);
+	}
+	
+	static void SwapUTF16Bytes(char16_t* buffer, size_t count) {
+		for (size_t i = 0; i < count; ++i) {
+			char16_t& c = buffer[i];
+			c = (c >> 8) | (c << 8);
+		}
+	}
+	
+	static unsigned int readUInt32(unsigned char* ptr, bool endian) {
+	    unsigned int val = *(unsigned int*)ptr;
+	    if (endian) val = SwapInt32(val);
+	    return val;
+	}
+
 private:
 	bool processDLCDataFile(DWORD &dwFilesProcessed, PBYTE pbData, DWORD dwLength, DLCPack *pack);
 
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