office-gobmx/include/sot/storage.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you 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 .
 */

#ifndef INCLUDED_SOT_STORAGE_HXX
#define INCLUDED_SOT_STORAGE_HXX

#include <sot/object.hxx>
#include <tools/stream.hxx>
#include <tools/globname.hxx>
#include <vcl/errcode.hxx>
#include <sot/storinfo.hxx>
#include <sot/sotdllapi.h>

namespace com::sun::star::embed { class XStorage; }
namespace com::sun::star::uno { class Any; }
namespace com::sun::star::uno { template <typename > class Reference; }

enum class SotClipboardFormatId : sal_uInt32;

class BaseStorageStream;

class SOT_DLLPUBLIC SotStorageStream final : virtual public SotObject, public SvStream
{
friend class SotStorage;
    BaseStorageStream * pOwnStm; // pointer to the own stream

    virtual std::size_t GetData(void* pData, std::size_t nSize) override;
    virtual std::size_t PutData(const void* pData, std::size_t nSize) override;
    virtual sal_uInt64 SeekPos(sal_uInt64 nPos) override;
    virtual void FlushData() override;

    virtual ~SotStorageStream() override;
public:
    SotStorageStream(OUString const & rString,
                     StreamMode = StreamMode::STD_READWRITE);
    SotStorageStream(BaseStorageStream *pBaseStream);

    virtual void ResetError() override;

    virtual void SetSize(sal_uInt64 nNewSize) override;
    sal_uInt32 GetSize() const;
    void CopyTo(SotStorageStream * pDestStm);
    bool Commit();
    bool SetProperty(OUString const & rName, css::uno::Any const & rValue);
    virtual sal_uInt64 TellEnd() override;
};

class  BaseStorage;
class SOT_DLLPUBLIC SotStorage : virtual public SotObject
{
friend class SotStorageStream;

    BaseStorage* m_pOwnStg; // target storage
    SvStream* m_pStorStm; // only for SDSTORAGES
    ErrCode m_nError;
    OUString m_aName;// name of the storage
    bool m_bIsRoot; // e.g.: File Storage
    bool m_bDelStm;
    OString m_aKey; // aKey.Len != 0  -> encryption
    sal_Int32 m_nVersion;

protected:
    virtual ~SotStorage() override;
    void CreateStorage(bool bUCBStorage, StreamMode);
public:
    SotStorage(OUString const & rString, StreamMode eMode = StreamMode::STD_READWRITE);
    SotStorage(bool bUCBStorage, const OUString & rString,
               StreamMode = StreamMode::STD_READWRITE);
    SotStorage(BaseStorage * pStorage);
    SotStorage(SvStream & rStream);
    SotStorage(bool bUCBStorage, SvStream & rStream);
    SotStorage(SvStream * rStream, bool bDelete);

    std::unique_ptr<SvMemoryStream> CreateMemoryStream();

    static bool IsStorageFile(OUString const & rFileName);
    static bool IsStorageFile(SvStream* pStream);

    const OUString& GetName() const;

    bool Validate();

    const OString& GetKey() const { return m_aKey;}

    void SetVersion(sal_Int32 nVersion)
    {
        m_nVersion = nVersion;
    }
    sal_Int32 GetVersion() const
    {
        return m_nVersion;
    }

    ErrCode GetError() const
    {
        return m_nError.IgnoreWarning();
    }
    void SetError(ErrCode nErrorCode)
    {
        if (m_nError == ERRCODE_NONE)
            m_nError = nErrorCode;
    }

    void SignAsRoot(bool bRoot) { m_bIsRoot = bRoot; }

                        // own data sector
    void SetClass(const SvGlobalName & rClass,
                  SotClipboardFormatId bOriginalClipFormat,
                  const OUString & rUserTypeName);

    SvGlobalName GetClassName(); // type of data in the storage
    SotClipboardFormatId GetFormat();
    OUString GetUserName();

    // list of all elements
    void FillInfoList(SvStorageInfoList *) const;
    bool CopyTo(SotStorage * pDestStg);
    bool Commit();

    // create stream with connection to Storage,
    // more or less a Parent-Child relationship
    SotStorageStream*  OpenSotStream(const OUString & rEleName,
                                     StreamMode = StreamMode::STD_READWRITE);
    SotStorage* OpenSotStorage(const OUString & rEleName,
                               StreamMode = StreamMode::STD_READWRITE,
                               bool transacted = true);

    // query whether Storage or Stream
    bool IsStream( const OUString & rEleName ) const;
    bool IsStorage( const OUString & rEleName ) const;
    bool IsContained( const OUString & rEleName ) const;
    // remove element
    bool Remove(const OUString & rEleName);
    bool CopyTo(const OUString & rEleName, SotStorage* pDest,
                const OUString & rNewName);

    bool IsOLEStorage() const;
    static bool IsOLEStorage(const OUString & rFileName);
    static bool IsOLEStorage(SvStream* pStream);

    static SotStorage* OpenOLEStorage(css::uno::Reference<css::embed::XStorage> const & xStorage,
                                      OUString const & rEleName, StreamMode = StreamMode::STD_READWRITE);
    static SotClipboardFormatId GetFormatID(css::uno::Reference<css::embed::XStorage> const & xStorage);
    static sal_Int32 GetVersion(css::uno::Reference<css::embed::XStorage> const & xStorage);
};

#endif // INCLUDED_SOT_STORAGE_HXX

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