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105 lines
4.0 KiB
C++
105 lines
4.0 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#pragma once
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#include "BinSmartPointers.h"
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#include "../Logic/GlobalWorkbookInfo.h"
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#include "CFRecordType.h"
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#include "../../../../OOXML/Binary/Presentation/BinaryFileReaderWriter.h"
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namespace XLS
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{
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// The purpose of the writer is to avoid seeking back through IStream when, for example,
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// we have write an offset of a record that would appear in processing much later.
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// For example this is necessary in 'Index' record that shall reference DBCell records
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// appearing later in the stream. So, this class will increase performance much
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class StreamCacheWriter
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{
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public:
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StreamCacheWriter(const GlobalWorkbookInfoPtr global_info);
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virtual ~StreamCacheWriter();
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// Return the next new CFRecord
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virtual CFRecordPtr getNextRecord(const CFRecordType::TypeId desirable_type);
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// Saves the next CFRecord to the stream or caches for later saving. Returns whether the record was saved to file or stored for later saving
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virtual bool storeNextRecord(CFRecordPtr record);
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virtual const size_t GetRecordPosition() = 0;
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GlobalWorkbookInfoPtr getGlobalWorkbookInfo() { return global_info_; }
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private:
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// Actual transporting record to the stream
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virtual const size_t writeToStream(const size_t num_of_records_min_necessary) = 0;
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protected:
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CFRecordPtrList records_cache;
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GlobalWorkbookInfoPtr global_info_;
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};
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class CFStreamCacheWriter : public StreamCacheWriter
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{
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public:
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CFStreamCacheWriter(CFStreamPtr stream, const GlobalWorkbookInfoPtr global_info);
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~CFStreamCacheWriter();
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// Return the next new CFRecord
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//CFRecordPtr getNextRecord(const CFRecordType::TypeId desirable_type) override;
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// Saves the next CFRecord to the CFStream or caches for later saving. Returns whether the record was saved to file or stored for later saving
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bool storeNextRecord(CFRecordPtr record) override;
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const size_t GetRecordPosition()override;
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private:
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// Actual transporting record to the CFStream and then to IStream
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const size_t writeToStream(const size_t num_of_records_min_necessary) override;
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private:
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CFStreamPtr stream_;
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};
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class BinaryStreamCacheWriter : public StreamCacheWriter
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{
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public:
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BinaryStreamCacheWriter(boost::shared_ptr<NSBinPptxRW::CXlsbBinaryWriter> binaryStream, const GlobalWorkbookInfoPtr global_info);
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~BinaryStreamCacheWriter();
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const size_t GetRecordPosition()override{return 0;}
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private:
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const size_t writeToStream(const size_t num_of_records_min_necessary) override;
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boost::shared_ptr<NSBinPptxRW::CXlsbBinaryWriter> binaryStream_;
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};
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} // namespace XLS
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