RVNGOLEStream.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* librevenge

   Original source: POLE - Portable C++ library to access OLE Storage
   Copyright (C) 2002-2005 Ariya Hidayat <ariya@kde.org>

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#ifndef RVNGOLESTREAM_H
#define RVNGOLESTREAM_H

#include <memory>
#include <string>
#include <vector>

namespace librevenge
{

class RVNGInputStream;

class IStorage;
class Stream;
class IStream;

class Storage
{
        friend class Stream;

public:

        // for Storage::result()
        enum Result { Ok, OpenFailed, NotOLE, BadOLE, UnknownError };

        Storage(RVNGInputStream *is);

        ~Storage();

        bool isStructured();

        std::vector<std::string> getSubStreamNamesList();

        Result result();

private:
        std::unique_ptr<IStorage> m_io;

        // no copy or assign
        Storage(const Storage &);
        Storage &operator=(const Storage &);

};

class Stream
{
        friend class Storage;
        friend class IStorage;

public:

        Stream(Storage *storage, const std::string &name);

        ~Stream();

        unsigned long size();

        unsigned long read(unsigned char *data, unsigned long maxlen);

private:
        std::unique_ptr<IStream> m_io;

        // no copy or assign
        Stream(const Stream &);
        Stream &operator=(const Stream &);
};

}  // namespace librevenge

#endif // RVNGOLESTREAM_H
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