ArticyArchiveReader.h

//  
// Copyright (c) 2023 articy Software GmbH & Co. KG. All rights reserved.  
//
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/Object.h"
#include "Dom/JsonObject.h"
#include "ArticyArchiveReader.generated.h"

USTRUCT()
struct ARTICYEDITOR_API FArticyArchiveHeader
{
    GENERATED_BODY()
 
    
    FString Magic;
    uint8 Version;
    uint8 Pad;
    uint16 Flags;
    int32 NumberOfFiles;
    uint64 FileDictionaryPos;
};

USTRUCT()
struct ARTICYEDITOR_API FArticyArchiveFileData
{
    GENERATED_BODY()
 
    
    uint64 FileStartPos;
    int64 UnpackedLength;
    int64 PackedLength;
    int16 Flags;
    FString Filename;
};

UCLASS()
class ARTICYEDITOR_API UArticyArchiveReader : public UObject
{
    GENERATED_BODY()
 
public:
    bool OpenArchive(const FString& InArchiveFileName);

    bool ReadFile(const FString& Filename, FString& OutResult) const;

    static FString ArchiveBytesToString(const uint8* In, int32 Count);

    bool FetchJson(
        const TSharedPtr<FJsonObject>& JsonRoot,
        const FString& FieldName,
        FString& Hash,
        TSharedPtr<FJsonObject>& OutJsonObject) const;
 
protected:
    bool ReadHeader();

    bool ReadFileData();

    FString ArchiveFileName;
    FArticyArchiveHeader Header;
    TMap<FString, FArticyArchiveFileData> FileDictionary;
};