mirror of
https://github.com/ONLYOFFICE/core.git
synced 2026-07-11 02:44:13 +08:00
76ee07f61c
Co-authored-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com> Co-committed-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com>
108 lines
4.0 KiB
C++
108 lines
4.0 KiB
C++
/*
|
|
* Copyright (C) Ascensio System SIA, 2009-2026
|
|
*
|
|
* This program is a free software product. You can redistribute it and/or
|
|
* modify it under the terms of the GNU Affero General Public License (AGPL)
|
|
* version 3 as published by the Free Software Foundation, together with the
|
|
* additional terms provided in the LICENSE file.
|
|
*
|
|
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
|
|
* details, see the GNU AGPL at: https://www.gnu.org/licenses/agpl-3.0.html
|
|
*
|
|
* You can contact Ascensio System SIA by email at info@onlyoffice.com
|
|
* or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
|
|
* LV-1050, Latvia, European Union.
|
|
*
|
|
* The interactive user interfaces in modified versions of the Program
|
|
* are required to display Appropriate Legal Notices in accordance with
|
|
* Section 5 of the GNU AGPL version 3.
|
|
*
|
|
* No trademark rights are granted under this License.
|
|
*
|
|
* All non-code elements of the Product, including illustrations,
|
|
* icon sets, and technical writing content, are licensed under the
|
|
* Creative Commons Attribution-ShareAlike 4.0 International License:
|
|
* https://creativecommons.org/licenses/by-sa/4.0/legalcode
|
|
*
|
|
* This license applies only to such non-code elements and does not
|
|
* modify or replace the licensing terms applicable to the Program's
|
|
* source code, which remains licensed under the GNU Affero General
|
|
* Public License v3.
|
|
*
|
|
* SPDX-License-Identifier: AGPL-3.0-only
|
|
*/
|
|
#pragma once
|
|
|
|
#include "BinSmartPointers.h"
|
|
#include "../Logic/GlobalWorkbookInfo.h"
|
|
#include "CFRecordType.h"
|
|
#include "../../../../OOXML/Binary/Presentation/BinaryFileReaderWriter.h"
|
|
|
|
namespace XLS
|
|
{
|
|
|
|
// The purpose of the writer is to avoid seeking back through IStream when, for example,
|
|
// we have write an offset of a record that would appear in processing much later.
|
|
// For example this is necessary in 'Index' record that shall reference DBCell records
|
|
// appearing later in the stream. So, this class will increase performance much
|
|
|
|
class StreamCacheWriter
|
|
{
|
|
public:
|
|
StreamCacheWriter(const GlobalWorkbookInfoPtr global_info);
|
|
virtual ~StreamCacheWriter();
|
|
|
|
// Return the next new CFRecord
|
|
virtual CFRecordPtr getNextRecord(const CFRecordType::TypeId desirable_type);
|
|
// 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
|
|
virtual bool storeNextRecord(CFRecordPtr record);
|
|
|
|
virtual const size_t GetRecordPosition() = 0;
|
|
GlobalWorkbookInfoPtr getGlobalWorkbookInfo() { return global_info_; }
|
|
|
|
private:
|
|
// Actual transporting record to the stream
|
|
virtual const size_t writeToStream(const size_t num_of_records_min_necessary) = 0;
|
|
|
|
protected:
|
|
|
|
CFRecordPtrList records_cache;
|
|
GlobalWorkbookInfoPtr global_info_;
|
|
};
|
|
|
|
class CFStreamCacheWriter : public StreamCacheWriter
|
|
{
|
|
public:
|
|
CFStreamCacheWriter(CFStreamPtr stream, const GlobalWorkbookInfoPtr global_info);
|
|
~CFStreamCacheWriter();
|
|
|
|
// Return the next new CFRecord
|
|
//CFRecordPtr getNextRecord(const CFRecordType::TypeId desirable_type) override;
|
|
// 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
|
|
bool storeNextRecord(CFRecordPtr record) override;
|
|
|
|
const size_t GetRecordPosition()override;
|
|
|
|
private:
|
|
// Actual transporting record to the CFStream and then to IStream
|
|
const size_t writeToStream(const size_t num_of_records_min_necessary) override;
|
|
|
|
private:
|
|
CFStreamPtr stream_;
|
|
};
|
|
|
|
class BinaryStreamCacheWriter : public StreamCacheWriter
|
|
{
|
|
public:
|
|
BinaryStreamCacheWriter(boost::shared_ptr<NSBinPptxRW::CXlsbBinaryWriter> binaryStream, const GlobalWorkbookInfoPtr global_info);
|
|
~BinaryStreamCacheWriter();
|
|
const size_t GetRecordPosition()override{return 0;}
|
|
private:
|
|
const size_t writeToStream(const size_t num_of_records_min_necessary) override;
|
|
|
|
boost::shared_ptr<NSBinPptxRW::CXlsbBinaryWriter> binaryStream_;
|
|
};
|
|
|
|
} // namespace XLS
|