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#ifndef ARGS_HH
#define ARGS_HH
#include <cstdint>
#include <iosfwd>
#include <memory>
#include <string>
#include <string_view>
#include <vector>
class Args {
public:
virtual ~Args() = default;
class Option {
public:
virtual ~Option() = default;
[[nodiscard]] virtual bool is_set() const = 0;
protected:
Option() = default;
Option(Option const&) = delete;
Option& operator=(Option const&) = delete;
};
class OptionArgument : public Option {
public:
[[nodiscard]] virtual bool has_argument() const = 0;
[[nodiscard]] virtual const std::string& argument() const = 0;
};
static std::unique_ptr<Args> create(std::string prgname = std::string());
virtual std::shared_ptr<Option> option(char shortname,
std::string longname = std::string(),
std::string help = std::string()) = 0;
std::shared_ptr<Option> option(std::string longname,
std::string help = std::string());
virtual std::shared_ptr<OptionArgument> option_argument(
char shortname, std::string longname = std::string(),
std::string arg = std::string(), std::string help = std::string(),
bool required = true) = 0;
std::shared_ptr<OptionArgument> option_argument(
std::string longname, std::string arg = std::string(),
std::string help = std::string(), bool required = true);
virtual bool run(int argc, char** argv,
std::vector<std::string_view>* arguments = nullptr) = 0;
virtual void print_error(std::ostream& out) const = 0;
virtual void print_help(std::ostream& out, uint32_t width = 79) const = 0;
protected:
Args() = default;
Args(Args const&) = delete;
Args& operator=(Args const&) = delete;
};
#endif // ARGS_HH
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