/*
       FIPS - the First nondestructive Interactive Partition Splitting program

       Module fat.h

       RCS - Header:
       $Header: c:/daten/fips/source/main/RCS/fat.h 1.4 1995/01/19 00:01:25 schaefer Exp schaefer $

       Copyright (C) 1993 Arno Schaefer

       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., 675 Mass Ave, Cambridge, MA 02139, USA.


       Report problems and direct all questions to:

       [email protected]
*/

#ifndef FAT_H
#define FAT_H

#include "types.h"
#include "disk_io.h"
#include "logdr_st.h"

class fat
{
protected:
       logical_drive *logical_drive;
       int number;
       dword start_sector;
       sector *buffer;
       dword sector_in_buffer;
       void read_sector (dword sector);
public:
       virtual dword next_cluster (dword cluster_number) = 0;

       fat (class logical_drive *logical_drive,int number);
       ~fat (void) { delete buffer; }
};

class fat16:public fat
{
public:
       dword next_cluster (dword cluster_number);
       void check_empty (dword new_start_cluster);
       void check_against (class fat16 *fat2);
       dword min_free_cluster (void);

       fat16 (class logical_drive *logical_drive,int number):fat (logical_drive,number) {}
};

class fat32:public fat
{
public:
       dword next_cluster (dword cluster_number);
       void check_empty (dword new_start_cluster);
       void check_against (class fat32 *fat2);
       dword min_free_cluster (void);

       fat32 (class logical_drive *logical_drive,int number):fat (logical_drive,number) {}
};

#endif