ObjLoading/ObjWriting: Initial skeleton for loading and writing obj files

src/ObjLoading/ObjContainer/IPak/IPak.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "Utils/FileAPI.h"
+#include "ObjContainer/IPak/IPakTypes.h"
+#include "ObjContainer/ObjContainerReferenceable.h"
+
+#include <vector>
+
+class IPak final : public ObjContainerReferenceable
+{
+    static const uint32_t MAGIC;
+    static const uint32_t VERSION;
+
+    FileAPI::IFile* m_file;
+
+    bool m_initialized;
+
+    IPakSection* m_index_section;
+    IPakSection* m_data_section;
+
+    std::vector<IPakIndexEntry> m_index_entries;
+
+    static uint32_t R_HashString(const char* str, uint32_t hash);
+
+    void ReadSection();
+    void ReadHeader();
+
+public:
+    explicit IPak(FileAPI::IFile* file);
+    ~IPak();
+
+    void Initialize();
+    FileAPI::IFile* GetEntryData(IPakHash nameHash, IPakHash dataHash);
+
+    static IPakHash HashString(const std::string& str);
+    static IPakHash HashData(const void* data, size_t dataSize);
+};