StringTableGenerator.h

//  
// Copyright (c) 2023 articy Software GmbH & Co. KG. All rights reserved.  
//
 
#pragma once
 
#include "Containers/UnrealString.h"
#include "Misc/Paths.h"

class StringTableGenerator
{
public:

    template<typename Lambda>
    void SafeExecute(Lambda Lamb);

    template<typename Lambda>
    StringTableGenerator(const FString& TableName, const FString& Culture, Lambda ContentGenerator);

    void Line(const FString& Key = "", const FString& SourceString = "");
 
private:

    FString Path;

    FString FileContent = "";

    void WriteToFile() const;
};
 
//---------------------------------------------------------------------------//
//---------------------------------------------------------------------------//
 
template<typename Lambda>
void StringTableGenerator::SafeExecute(Lambda Lamb)
{
    Lamb();
}
 
template<>
inline void StringTableGenerator::SafeExecute(nullptr_t Lamb)
{
    // Do nothing for nullptr lambdas
}
 
template <typename Lambda>
StringTableGenerator::StringTableGenerator(const FString& TableName, const FString& Culture, Lambda ContentGenerator)
{
    const FString FilePath = TEXT("ArticyContent/Generated") / TableName;
    if (Culture.IsEmpty())
    {
        Path = FPaths::ProjectContentDir() / FilePath;
    }
    else
    {
        Path = FPaths::ProjectContentDir() / TEXT("L10N") / Culture / FilePath;
    }
    Path += TEXT(".csv");
 
    Line("Key", "SourceString");
    bool bContentWritten = false;
    if (ensure(!std::is_null_pointer<Lambda>::value))
        bContentWritten = ContentGenerator(this) != 0;
 
    if (bContentWritten)
        WriteToFile();
}