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#ifndef BITFIELD_H
#define BITFIELD_H
#include <sys/types.h>
class BitField
{
private:
static size_t nbits;
static size_t nbytes;
unsigned char *b;
size_t nset;
void _recalc();
void _setall(unsigned char* buf);
void _set(size_t idx);
public:
BitField();
BitField(size_t n_bits);
BitField(const BitField &bf);
~BitField(){ if(b) delete []b; }
void operator=(const BitField &bf);
void SetAll();
void Clear();
void Set(size_t idx);
void UnSet(size_t idx);
int IsSet(size_t idx) const;
int IsFull() const { return (nset >= nbits) ? 1 : 0; }
int IsEmpty() const { return (nset == 0) ? 1 : 0; }
size_t Count() const { return nset;}
size_t NBytes() const { return nbytes; }
size_t NBits() const { return nbits; }
size_t Random() const;
void Comb(const BitField &bf);
void Comb(const BitField *pbf) { if(pbf) Comb(*pbf); }
void Except(const BitField &bf);
void Except(const BitField *pbf) { if(pbf) Except(*pbf); }
void And(const BitField &bf);
void And(const BitField *pbf) { if(pbf) And(*pbf); }
void Invert();
void SetReferBuffer(char *buf);
void WriteToBuffer(char *buf);
int SetReferFile(const char *fname);
int WriteToFile(const char *fname);
};
#endif
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