hex.hpp

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#pragma once
 
#include <cstdint>
#include <span>
#include <string>
#include <vector>
 
namespace hex
{
    extern const char digits[17];
    extern const uint8_t map[256];
 
    bool isValid(const char *str, size_t str_size) noexcept;
    bool isValid(std::string_view str) noexcept;
 
    size_t sizeEncoded(std::span<const uint8_t> data);
    size_t sizeDecoded(std::string_view str) noexcept;
 
    void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size);
    std::string encode(std::span<const uint8_t> data);
 
    void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size);
    std::vector<uint8_t> decode(std::string_view str);
}