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Viewing changes to kget/transfer-plugins/bittorrent/libbtcore/dht/key.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Jonathan Riddell
  • Date: 2011-01-21 16:28:50 UTC
  • mfrom: (1.1.55 upstream)
  • Revision ID: james.westby@ubuntu.com-20110121162850-5okl235t3l91cwx0
Tags: 4:4.6.0-0ubuntu1
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kget/transfer-plugins/bittorrent/libbtcore/dht/key.cpp
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/***************************************************************************
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 *   Copyright (C) 2005 by Joris Guisson                                   *
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 *   joris.guisson@gmail.com                                               *
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 *                                                                         *
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 *   This program is free software; you can redistribute it and/or modify  *
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 *   it under the terms of the GNU General Public License as published by  *
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 *   the Free Software Foundation; either version 2 of the License, or     *
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 *   (at your option) any later version.                                   *
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 *                                                                         *
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 *   This program is distributed in the hope that it will be useful,       *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU General Public License for more details.                          *
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 *                                                                         *
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 *   You should have received a copy of the GNU General Public License     *
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 *   along with this program; if not, write to the                         *
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 *   Free Software Foundation, Inc.,                                       *
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 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
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 ***************************************************************************/
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#include "key.h"
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#include <time.h>
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#include <stdlib.h>
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#include <util/constants.h>
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using namespace bt;
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namespace dht
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{
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        Key::Key()
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        {}
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        Key::Key(const bt::SHA1Hash & k) : bt::SHA1Hash(k)
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        {
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        }
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        Key::Key(const Uint8* d) : bt::SHA1Hash(d)
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        {
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        }
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        Key::Key(const QByteArray & ba)
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        {
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                for (int i = 0;i < 20 && i < ba.size();i++)
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                        hash[i] = ba[i];
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        }
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        Key::~Key()
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        {}
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        bool Key::operator == (const Key & other) const
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        {
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                return bt::SHA1Hash::operator ==(other);
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        }
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        bool Key::operator != (const Key & other) const
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        {
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                return !operator == (other);
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        }
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        bool Key::operator < (const Key & other) const
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        {
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                for (int i = 0;i < 20;i++)
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                {
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                        if (hash[i] < other.hash[i])
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                                return true;
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                        else if (hash[i] > other.hash[i])
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                                return false;
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                }
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                return false;
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        }
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        bool Key::operator <= (const Key & other) const
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        {
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                return operator < (other) || operator == (other);
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        }
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        bool Key::operator > (const Key & other) const
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        {
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                for (int i = 0;i < 20;i++)
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                {
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                        if (hash[i] < other.hash[i])
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                                return false;
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                        else if (hash[i] > other.hash[i])
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                                return true;
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                }
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                return false;
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        }
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        bool Key::operator >= (const Key & other) const
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        {
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                return operator > (other) || operator == (other);
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        }
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        Key Key::distance(const Key & a,const Key & b)
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        {
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                return a ^ b;
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        }
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        Key Key::random()
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        {
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                srand(time(0));
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                Key k;
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                for (int i = 0;i < 20;i++)
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                {
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                        k.hash[i] = (Uint8)rand() % 0xFF;
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                }
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                return k;
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        }
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}