libcruft-util/cmdopt2/parser.hpp

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright 2022, Danny Robson <danny@nerdcruft.net>
 */

#pragma once

#include "./fwd.hpp"

#include <iosfwd>
#include <vector>


namespace cruft::cmdopt2 {
    class parser {
    public:
        explicit parser (char const *desc);

        int parse [[nodiscard]] (int argc, char const* const* argv);

        positional_t& add (positional_t const&) &;
        keyword_t& add (keyword_t const&) &;

        void usage (int argc, char const * const* argv, FILE*) const;

    private:
        int parse_named (int argc, char const* const* argv, int*) const;
        int parse_short (int argc, char const* const* argv, int*) const;
        int parse_long  (int argc, char const* const* argv, int*) const;

        std::vector<positional_t> m_positional;
        std::vector<keyword_t> m_keyword;

        char const *m_description;
    };
}