bitfield.h

linux系统下bt的客户端实现。 采用的是c++

#ifndef BITFIELD_H
#define BITFIELD_H
#include <sys/types.h>

class bitfield {
  public:
    static size_t nbits;
    static size_t nbytes;

    unsigned char *b;
    size_t nset;

  public:
     bitfield();
     bitfield(size_t);
    ~bitfield();

    void SetAll();
    void Set(size_t idx);
    void UnSet(size_t idx);

    int IsSet(size_t idx) const;
    int IsFull() const {
	return (nset >= nbits);
    } 
	
	int IsEmpty() const {
	return 0 == nset;
    }
	 
	size_t GetCount() const {
	return nset;
    } 
	
	size_t GetBytes() const {
	return nbytes;
    } 
	
	size_t GetBits() const {
	return nbits;
    } 
	
	void Except(const bitfield &);
    void Invert();
    void And(const bitfield &);
	void ReCalculate();
	void Empty();
	void printout();
};

#endif