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core/MsBinaryFile/PptFile/Records/PersistDirectoryAtom.cpp
Alexander Trofimov 76ee07f61c [copyright] Update copyright header
Co-authored-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com>
Co-committed-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com>
2026-05-14 08:23:56 +00:00

88 lines
2.9 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
*/
#include "PersistDirectoryAtom.h"
using namespace PPT;
_UINT32 CPersistDirectoryEntry::FromStream(POLE::Stream *pStream)
{
_UINT32 nFlag = StreamUtils::ReadDWORD(pStream);
m_nPersistID = (nFlag & 0x000FFFFF); // 20 bit
m_nPersistCount = (nFlag & 0xFFF00000) >> 20; // 12 bit
m_arPersistOffsets.clear();
for (_UINT32 index = 0; index < m_nPersistCount; ++index)
{
_UINT32 Mem = StreamUtils::ReadDWORD(pStream);
m_arPersistOffsets.push_back(Mem);
}
return 4 * (m_nPersistCount + 1);
}
void CRecordPersistDirectoryAtom::ReadFromStream(SRecordHeader &oHeader, POLE::Stream *pStream)
{
m_oHeader = oHeader;
_UINT32 nCountRead = 0;
_UINT32 nCountEnries = 0;
while (nCountRead < m_oHeader.RecLen)
{
CPersistDirectoryEntry elm;
m_arEntries.push_back(elm);
nCountRead += m_arEntries[nCountEnries].FromStream(pStream);
++nCountEnries;
}
}
void CRecordPersistDirectoryAtom::ToMap(std::map<_UINT32, _UINT32> *pMap)
{
pMap->clear();
for (size_t nEntry = 0; nEntry < m_arEntries.size(); ++nEntry)
{
_UINT32 nPID = m_arEntries[nEntry].m_nPersistID;
for (size_t nIndex = 0; nIndex < m_arEntries[nEntry].m_nPersistCount; ++nIndex)
{
_UINT32 nOffset = m_arEntries[nEntry].m_arPersistOffsets[nIndex];
pMap->insert(std::pair<_UINT32, _UINT32>(nPID, nOffset));
++nPID;
}
}
}