command_line_generic.h

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/*  -*- mode: clanlib -*-
**  $Id: command_line_generic.h,v 1.4 2003/10/14 15:52:12 mbn Exp $
**
**  ClanLib Game SDK
**  Copyright (C) 2003  The ClanLib Team
**  For a total list of contributers see the file CREDITS.
**
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Lesser General Public
**  License as published by the Free Software Foundation; either
**  version 2.1 of the License, or (at your option) any later version.
**
**  This library 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
**  Lesser General Public License for more details.
**
**  You should have received a copy of the GNU Lesser General Public
**  License along with this library; if not, write to the Free Software
**  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#ifndef header_core_system_command_line_generic
#define header_core_system_command_line_generic

#if _MSC_VER > 1000
#pragma once
#endif

#include <string>
#include <vector>
#include "API/Core/System/command_line.h"

class CL_CommandLine_Generic
{
private:
	int help_indent;

	std::string programm;

	struct Option 
	{
		int key;
		std::string help;
		std::string long_option;
		std::string argument;
		bool visible;
	};
  
	typedef std::vector<Option> Options;
	Options options;

	struct ParsedOption
	{
		int key;
		std::string argument;
	};

	typedef std::vector<ParsedOption> ParsedOptions;
	ParsedOptions parsed_options;
	ParsedOptions::iterator current_option;

	enum
	{
		GROUP     = -3,
		DOC       = -4,
		USAGE     = -5
	};

public:  
	CL_CommandLine_Generic();

	void set_help_indent(int i) { help_indent = i; }

	void add_usage(const std::string& usage);
	void add_doc(const std::string& doc);
	void add_group(const std::string& grouptopic);
  
	void add_option(int key,
						 const std::string& long_option, 
						 const std::string& argument,
						 const std::string& help,
						 bool visible = true);

	void parse_args(int argc, char** argv);
	void print_help();
  
	bool next();
	int get_key();
	std::string get_argument();

private:
	void read_option(int id, const std::string& argument);

	/** Find the Option structure that matches \a short_option */
	Option* lookup_short_option(char short_option);

	/** Find the Option structure that matches \a long_option */
	Option* lookup_long_option (const std::string& long_option);
};

#endif

/* EOF */