args.h

/*
 *  Copyright (C) 2000-2022  The Exult Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef ARGS_H
#define ARGS_H

// Handy argument processor. I'm certain the implementation could be better
// but it suffices quite well at the moment.

#include "common_types.h"

#include <string>
#include <vector>

class Args {
	struct Opts {
		std::string option;

		union {
			bool*        bval;
			std::string* sval;
			int*         ival;
			uint32*      uval;
		};

		union {
			bool        dbval;
			const char* dsval;
			int         dival;
			uint32      duval;
		};

		enum {
			no_type = 0,
			type_bool,
			type_string,
			type_int,
			type_unsigned
		} valuetype = no_type;

		Opts() : sval(nullptr), dsval(nullptr) {}
	};

	std::vector<Opts> options;

public:
	void declare(const char* s, bool* b, bool defval = true);
	void declare(const char* s, std::string* b, const char* defval = nullptr);
	void declare(const char* s, int* b, int defval = 0);
	void declare(const char* s, uint32* b, uint32 defval = 0);
	void process(int argc, char** argv);
};

#endif