CheckSum.h

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#ifndef ZYPP_CHECKSUM_H
#define ZYPP_CHECKSUM_H

#include <iosfwd>
#include <string>

#include "zypp/Pathname.h"

namespace zypp
{ 


  class CheckSum
  {
  public:
    CheckSum();

    CheckSum( const std::string & type, const std::string & checksum );

    CheckSum( const std::string & type, std::istream & input_r );

  public:
    static const std::string & md5Type();
    static const std::string & shaType();
    static const std::string & sha1Type();
    static const std::string & sha256Type();

    static CheckSum md5( const std::string & checksum )
    { return  CheckSum( md5Type(), checksum); }
    static CheckSum sha( const std::string & checksum )
    { return  CheckSum( shaType(), checksum); }
    static CheckSum sha1( const std::string & checksum )
    { return  CheckSum( sha1Type(), checksum); }
    static CheckSum sha256( const std::string & checksum )
    { return  CheckSum( sha256Type(), checksum); }

    static CheckSum md5( std::istream & input_r )
    { return  CheckSum( md5Type(), input_r ); }
    static CheckSum sha( std::istream & input_r )
    { return  CheckSum( sha1Type(), input_r ); }
    static CheckSum sha1( std::istream & input_r )
    { return  CheckSum( sha1Type(), input_r ); }
    static CheckSum sha256( std::istream & input_r )
    { return  CheckSum( sha256Type(), input_r ); }

  public:
    std::string type() const
    { return _type; }

    std::string checksum() const
    { return _checksum; }

    bool empty() const
    { return (checksum().empty() || type().empty()); }

  private:
    std::string _type;
    std::string _checksum;
  };

  std::ostream & operator<<( std::ostream & str, const CheckSum & obj );

  inline bool operator==( const CheckSum & lhs, const CheckSum & rhs )
  { return lhs.checksum() == rhs.checksum() && lhs.type() == rhs.type(); }

  inline bool operator!=( const CheckSum & lhs, const CheckSum & rhs )
  { return ! ( lhs == rhs ); }

} // namespace zypp
#endif // ZYPP_CHECKSUM_H

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