#ifndef KIMODEM_TLV_H
#define KIMODEM_TLV_H

#include <cstdint>

#include "Arena.h"

using namespace klib;


#ifndef TLV_MAX_LEN
#define TLV_MAX_LEN	253
#endif


#define TAG_EMPTY	0


namespace klib {
namespace TLV {


struct Record {
	uint8_t		Tag;
	uint8_t		Len;
	char		Val[TLV_MAX_LEN];
};

uint8_t	*WriteToMemory(Arena &, uint8_t *, Record &);
void	 ReadFromMemory(Record &, uint8_t *);
void	 SetRecord(Record &, uint8_t, uint8_t, const char *);
void	 DeleteRecord(Arena &, uint8_t *);

/*
* returns a pointer to memory where the record was found,
* e.g. LocateTag(...)[0] is the tag of the found record.
* FindTag will call LocateTag and then SkipRecord if the
* tag was found.
*/
uint8_t *FindTag(Arena &, uint8_t *, Record &);
uint8_t *LocateTag(Arena &, uint8_t *, Record &);

uint8_t	*FindEmpty(Arena &, uint8_t *);
uint8_t	*SkipRecord(Record &, uint8_t *);


} // namespace TLV
} // namespace klib


#endif