ExtractMorrowindFormLibrary.cpp

// Warning! Experimental! No guarantees on functionality! Use at your own risk!!!!!
#include "ExtractMorrowindFormLibrary.h"
#include "Serialization/MemoryReader.h"

TArray<uint8> UExtractMorrowindFormLibrary::ExtractMorrowindFormData(const TArray<uint8>& MainFileData)
{
    TArray<uint8> ExtractedData;
    FMemoryReader Ar(MainFileData, true);

    while (!Ar.AtEnd())
    {
        // Read record type (4 bytes)
        FString RecordType;
        Ar << RecordType;

        // Read record size (4 bytes)
        int32 RecordSize;
        Ar << RecordSize;

        int64 RecordEnd = Ar.Tell() + RecordSize;

        while (Ar.Tell() < RecordEnd)
        {
            // Read subrecord type (4 bytes)
            FString SubrecordType;
            Ar << SubrecordType;

            // Read subrecord size (4 bytes)
            int32 SubrecordSize;
            Ar << SubrecordSize;

            // Read subrecord data
            TArray<uint8> SubrecordData;
            SubrecordData.SetNum(SubrecordSize);
            Ar.Serialize(SubrecordData.GetData(), SubrecordSize);

            // Append all subrecord data to the result
            ExtractedData.Append(SubrecordData);
        }
    }

    return ExtractedData;
}