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sonic3air-main/Oxygen/oxygenengine/source/oxygen/file/FilePackage.h

@@ -0,0 +1,44 @@
+/*
+*	Part of the Oxygen Engine / Sonic 3 A.I.R. software distribution.
+*	Copyright (C) 2017-2024 by Eukaryot
+*
+*	Published under the GNU GPLv3 open source software license, see license.txt
+*	or https://www.gnu.org/licenses/gpl-3.0.en.html
+*/
+
+#pragma once
+
+#include <rmxmedia.h>
+
+
+class FilePackage
+{
+public:
+	struct PackedFile
+	{
+		std::wstring mPath;
+		uint32 mPositionInFile = 0;
+		uint32 mSizeInFile = 0;
+		bool mLoadedContent = false;
+		std::vector<uint8> mContent;
+	};
+
+	struct PackageHeader
+	{
+		static const constexpr char SIGNATURE[] = "OPCK";
+		static const constexpr uint32 CURRENT_FORMAT_VERSION = 3;
+		static const constexpr size_t HEADER_SIZE = 20;
+
+		uint32 mFormatVersion = CURRENT_FORMAT_VERSION;
+		uint32 mContentVersion = 0;
+		uint32 mEntryHeaderSize = 0;		// Including the meta data for entries, but excluding their contents
+		size_t mNumEntries = 0;
+	};
+
+public:
+	static bool loadPackage(std::wstring_view packageFilename, std::map<std::wstring, PackedFile>& outPackedFiles, InputStream*& inputStream, bool forceLoadAll, bool showErrors = true);
+	static void createFilePackage(const std::wstring& packageFilename, const std::vector<std::wstring>& includedPaths, const std::vector<std::wstring>& excludedPaths, const std::wstring& comparisonPath, uint32 contentVersion, bool forceReplace = false);
+
+private:
+	static bool readPackageHeader(PackageHeader& outHeader, VectorBinarySerializer& serializer);
+};