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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