nybbler.h

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#ifndef cetlib_nybbler_h
#define cetlib_nybbler_h

// ======================================================================
//
// nybbler: Half-byte manipulations
//
// ======================================================================

#include <string>

namespace cet {
  class nybbler;
}

// ======================================================================

class cet::nybbler {
  typedef unsigned char uchar;
  typedef std::string string;

public:
  // use compiler's d'tor, copy c'tor, copy assignment

  nybbler() : s_("") {}
  explicit nybbler(string const& s) : s_(s) {}

  string as_hex() const;
  string as_char() const;

  nybbler& operator<<(string const&);

private:
  string s_;

  static uchar msn(char ch); // most significant nybble
  static uchar lsn(char ch); // least significant nybble

  static char to_hex(uchar nyb);
  static uchar to_nyb(char hex);

}; // nybbler

// ======================================================================

#endif /* cetlib_nybbler_h */

// Local variables:
// mode: c++
// End: