hash.h

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/*                                      -*-C++-*-
    Classified Ads is Copyright (c) Antti Jarvinen 2013.

    This file is part of Classified Ads.

    Classified Ads is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Classified Ads is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Classified Ads.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef HASH_H
#define HASH_H

#include <QSslCertificate>


class Hash {
public:
  const static int KNumberOfIntsInHash = 5 ;
  Hash() ;
  Hash(const quint32 aHash160bits[KNumberOfIntsInHash]) ;
  Hash(const quint32 aBits1,
       const quint32 aBits2,
       const quint32 aBits3,
       const quint32 aBits4,
       const quint32 aBits5) ;
  Hash(const unsigned char aDigest[KNumberOfIntsInHash * 4]) ;
  Hash(const char* aHexString, int aHexStringLen) ;
  Hash(const QSslCertificate& aSslCert) ;

  void fromString(const unsigned char *aBuf) ;

  QString toString() const ;

  void fromQVariant(const QVariant& aQVariantHashValue) ;

  QVariant toQVariant() const ;

  void calculate(const QByteArray& aBuf) ;
  bool operator== (const Hash& aHashToCompare) const ;
  bool operator!= (const Hash& aHashToCompare) const ;
  bool operator< (const Hash& aHashToCompare) const ;
  bool operator> (const Hash& aHashToCompare) const ;

  Hash& operator= (const Hash& aHashToSubstitute) ;

  Hash distanceFrom (const Hash& aHash) ;

  Hash operator-(const Hash& aToBeSubstracted) const ;
  Hash operator+(const Hash& aToBeAdded) const ;

private:
  void setFromCharArray(const unsigned char aDigest[KNumberOfIntsInHash * 4]) ;
public:
  quint32 iHash160bits[KNumberOfIntsInHash] ;
} ;
#endif