File: RandomDataProvider.hh

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// Copyright (c) 2005-2018 Jay Berkenbilt
//
// This file is part of qpdf.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Versions of qpdf prior to version 7 were released under the terms
// of version 2.0 of the Artistic License. At your option, you may
// continue to consider qpdf to be licensed under those terms. Please
// see the manual for additional information.

#ifndef __RANDOMDATAPROVIDER_HH__
#define __RANDOMDATAPROVIDER_HH__

#include <string.h> // for size_t

class RandomDataProvider
{
  public:
    virtual ~RandomDataProvider()
    {
    }
    virtual void provideRandomData(unsigned char* data, size_t len) = 0;

  protected:
    RandomDataProvider()
    {
    }

  private:
    RandomDataProvider(RandomDataProvider const&);
    RandomDataProvider& operator=(RandomDataProvider const&);
};

#endif // __RANDOMDATAPROVIDER_HH__