File: args.h

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/***********************************************************************
 *  args - Argument reading system
 *  Copyright (C) 1997-1998 Jon Anders Haugum
 *
 *  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; see the file COPYING.  If not, write to
 *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA 02111-1307, USA.
 *
 *
 *  Author of args can be reached at:
 *     email: jonah@colargol.tihlde.hist.no
 *     www: http://www.colargol.tihlde.hist.no/~jonah/el/avrp.html
 *     Postal address: Jon Anders Haugum
 *                     �vre M�llenbergsgt 52
 *                     7014 Trondheim
 */

enum
	{
	ARGTYPE_BOOLEAN = 0,   /* boolean Value (0 = False) */
	ARGTYPE_STRING,        /* Stringpointer in Data     */
	ARGTYPE_STRING_MULTI   /* List of strings in Data   */
	};

#define GET_ARG(args,argnum) (args->arg[argnum].data)
#define SET_ARG(args,argnum,value) (args->arg[argnum].data = (void *)value)

struct args
	{
	struct arg *arg;
	int count;
	struct data_list *first_data;
	};

struct arg
	{
	int type;
	char letter;
	char *longarg;
	void *data;
	};

struct data_list
	{
	struct data_list *next;
	void *data;
	};

struct args *alloc_args(int arg_count);
int read_args(struct args *args, int argc, char *argv[]);
void free_args(struct args *args);
void define_arg(struct args *args, int index, int type, char letter, char *longarg, void *def_value);