// $Id$
//
//  Copyright (C) 2014 Novartis Institutes for BioMedical Research
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
//
#include <RDGeneral/BoostStartInclude.h>
#include <boost/archive/iterators/base64_from_binary.hpp>
#include <boost/archive/iterators/transform_width.hpp>
#include <boost/archive/iterators/ostream_iterator.hpp>
#include <RDGeneral/BoostEndInclude.h>
#include <string>
#include <sstream>
#include <algorithm>

#include "MolHash.h"

using namespace boost::archive::iterators;

namespace RDKit
{
 namespace MolHash
 {
//=============================================================================
// MolHash Module API implementation:
//=============================================================================

    std::string encode(const void* bin, size_t size)
    {
        typedef base64_from_binary<transform_width<const char *, 6, 8> >   // retrieve 6 bit integers from a sequence of 8 bit bytes
                base64_enc;

        std::stringstream os;
        std::copy(base64_enc((const char*) bin), base64_enc(((const char*)bin) + size),
                  ostream_iterator<char>(os));
        return os.str();
    }
//=============================================================================
}}