Program Listing for File Env.h

↰ Return to documentation for file (uconfig/format/Env.h)

#pragma once

#include "Format.h"

#include <map>

namespace uconfig {

class EnvFormat: public Format
{
public:
    static inline const std::string name = "[ENV]";
    using source_type = void;
    using dest_type = std::map<std::string, std::string>;

    template <typename T>
    std::optional<T> Parse(const source_type* /*unused*/, const std::string& path) const;

    template <typename T>
    void Emit(dest_type* dest, const std::string& path, const T& value) const;

    inline virtual std::string VectorElementPath(const std::string& vector_path, std::size_t index) const noexcept override;

private:
    template <typename T>
    static std::optional<T> FromString(const std::string& str);

    template <typename T>
    static std::string ToString(const T& value);
};

} // namespace uconfig

#include "impl/Env.ipp"