119 lines
4.0 KiB
C++
119 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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#ifndef BIFF12STREAMREADER_H
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#define BIFF12STREAMREADER_H
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#include "Workbook.h"
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#include "Worksheet.h"
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#include "SharedStrings.h"
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#include "Styles.h"
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#include "Comments.h"
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#include "Tables.h"
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#include "QueryTable.h"
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#include "Connections.h"
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#include <unordered_map>
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#include <vector>
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#include "../../../DesktopEditor/common/Types.h"
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#include "../../../ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.h"
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namespace XLSB
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{
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class CBiff12StreamReader
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{
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BYTE* m_pData;
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LONG m_lSize;
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LONG m_lPos;
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BYTE* m_pDataCur;
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BYTE* m_pDataLast;
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public:
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CBiff12StreamReader(const std::wstring& sPath)
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{
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NSFile::CFileBinary oFile;
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if (oFile.OpenFile(sPath) == false)
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return;
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auto m_lStreamLen = (LONG)oFile.GetFileSize();
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auto m_pStream = new BYTE[m_lStreamLen];
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DWORD dwRead = 0;
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oFile.ReadFile(m_pStream, (DWORD)m_lStreamLen, dwRead);
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oFile.CloseFile();
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m_pData = m_pStream;
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m_lSize = m_lStreamLen;
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m_lPos = 0;
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m_pDataCur = m_pData;
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m_pDataLast = m_pData + m_lSize;
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}
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CF_RECORD_TYPE getNextRecordType()
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{
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DWORD recid = 0;
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auto dataCur = m_pDataCur;
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if(!CBinaryBiff12StreamReader::GetRecordId(/*in-out*/dataCur, m_pDataLast, /*out*/recid))
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return rt_UNKNOWN;
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else
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return biff12TypeRecord.find(recid)->second;
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}
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std::shared_ptr<CBiff12RecordBase> getNextRecord()
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{
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DWORD recid = 0;
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DWORD reclen = 0;
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if(m_lPos >= m_lSize)
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return nullptr;
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std::shared_ptr<CBiff12RecordBase> record = nullptr;
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if(!CBinaryBiff12StreamReader::GetRecordId(/*in-out*/m_pDataCur, m_pDataLast, /*out*/recid) ||
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!CBinaryBiff12StreamReader::GetRecordLength(/*in-out*/m_pDataCur, m_pDataLast, /*out*/reclen))
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return record;
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else
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{
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if (recid == 0 && reclen == 0)
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return nullptr;
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record = CBiff12RecordFactory::Instance()->Create((static_cast<int>(recid)));
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if (record != nullptr)
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record->Read(m_pDataCur, recid, reclen);
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m_lPos += reclen;
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m_pDataCur += reclen;
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return record;
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}
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}
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};
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}
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#endif
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