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/*
* AdPlug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (c) 1999 - 2003 Simon Peter <dn.tlp@gmx.net>, et al.
*
* 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
*
* database.h - AdPlug database class
* Copyright (c) 2002 Riven the Mage <riven@ok.ru>
* Copyright (c) 2002, 2003 Simon Peter <dn.tlp@gmx.net>
*/
#ifndef H_ADPLUG_DATABASE
#define H_ADPLUG_DATABASE
#if 0
#include <binio.h>
class CAdPlugDatabase
{
public:
class CKey
{
public:
unsigned short crc16;
unsigned long crc32;
CKey() {};
CKey(binistream &in);
bool operator==(const CKey &key);
private:
void make(binistream &in);
};
class CRecord
{
public:
typedef enum { Plain, SongInfo, ClockSpeed } RecordType;
RecordType type;
CKey key;
char *filetype, comment;
static CRecord *factory(RecordType type);
static CRecord *factory(binistream &in);
CRecord() {}
virtual ~CRecord() {}
void write(binostream &out);
//bool user_read(std::istream &in, std::ostream &out);
//bool user_write(std::ostream &out);
protected:
virtual void read_own(binistream &in) = 0;
virtual void write_own(binostream &out) = 0;
virtual unsigned long get_size() = 0;
virtual bool user_read_own(std::istream &in, std::ostream &out) = 0;
virtual bool user_write_own(std::ostream &out) = 0;
};
CAdPlugDatabase();
~CAdPlugDatabase();
bool load(std::string db_name);
bool load(binistream &f);
bool save(std::string db_name);
bool save(binostream &f);
bool insert(CRecord *record);
void wipe(CRecord *record);
void wipe();
CRecord *search(CKey const &key);
bool lookup(CKey const &key);
CRecord *get_record();
bool go_forward();
bool go_backward();
void goto_begin();
void goto_end();
private:
static const unsigned short hash_radix;
class DB_Bucket
{
public:
unsigned long index;
bool deleted;
DB_Bucket *chain;
CRecord *record;
DB_Bucket(unsigned long nindex, CRecord *newrecord, DB_Bucket *newchain = 0);
~DB_Bucket();
};
DB_Bucket **db_linear;
DB_Bucket **db_hashed;
unsigned long linear_index, linear_logic_length, linear_length;
unsigned long make_hash(CKey const &key);
};
class CPlainRecord: public CAdPlugDatabase::CRecord
{
public:
CPlainRecord() { type = Plain; }
protected:
virtual void read_own(binistream &in) {}
virtual void write_own(binostream &out) {}
virtual unsigned long get_size() { return 0; }
virtual bool user_read_own(std::istream &in, std::ostream &out) { return true; }
virtual bool user_write_own(std::ostream &out) { return true; }
};
class CInfoRecord: public CAdPlugDatabase::CRecord
{
public:
std::string title;
std::string author;
CInfoRecord();
protected:
virtual void read_own(binistream &in);
virtual void write_own(binostream &out);
virtual unsigned long get_size();
virtual bool user_read_own(std::istream &in, std::ostream &out);
virtual bool user_write_own(std::ostream &out);
};
class CClockRecord: public CAdPlugDatabase::CRecord
{
public:
float clock;
CClockRecord();
protected:
virtual void read_own(binistream &in);
virtual void write_own(binostream &out);
virtual unsigned long get_size();
virtual bool user_read_own(std::istream &in, std::ostream &out);
virtual bool user_write_own(std::ostream &out);
};
#endif
#endif
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