OGRFieldAdapter.hpp

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#pragma once
#include <gdal/ogr_feature.h>
#include <fishnet/Normalize.hpp>
#include <typeindex>
#include <fishnet/FieldType.hpp>
#include <fishnet/FieldDefinition.hpp>
namespace fishnet{
class OGRFieldAdapter{
public:
    static OGRFieldType fromTypeIndex(const std::type_index & type) noexcept {
        if (typeid(double) == type || typeid(float) == type)
            return OFTReal;
        if(typeid(int) == type)
            return OFTInteger;
        if (typeid(long) == type || typeid(size_t) == type)
            return OFTInteger64;
        return OFTString;
    }
 
    template<typename T>
    static void setFieldValue(OGRFeature * feature, const std::string & fieldName, const T & value) noexcept {
            const char * name = fieldName.c_str();
            if constexpr(std::same_as<T,int>)
                feature->SetField(name, value);
            else if constexpr(std::integral<T>)
                feature->SetField(name, GIntBig((static_cast<int64_t>(value))));
            else if constexpr (std::floating_point<T>)
                feature->SetField(name, static_cast<double>(value));
            else if constexpr (std::same_as<T,std::string>)
                feature->SetField(name, value.c_str());
            else
                feature->SetField(name, value);
    }
};
 
uint64_t normalizeToShpFileIntField(std::integral auto number) noexcept {
    const uint64_t SHP_MAX_VALUE = 1000000000000000000ULL;
    return fishnet::math::normalize(number,SHP_MAX_VALUE); 
}
 
}