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DocumentServer-v-9.2.0/core/MsBinaryFile/DocFile/Plex.h
Yajbir Singh f1b860b25c
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updated
2025-12-11 19:03:17 +05:30

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/*
* (c) Copyright Ascensio System SIA 2010-2023
*
* 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. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* 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: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
#pragma once
#include "ByteStructure.h"
namespace DocFileFormat
{
template<class T> class Plex
{
friend class CommentsMapping;
friend class DocumentMapping;
friend class WordDocument;
friend class TextboxMapping;
protected:
int CP_LENGTH;
std::vector<int> CharacterPositions;
std::vector<ByteStructure*> Elements;
bool m_bIsValid;
std::map<int, size_t> mapCP;
public:
Plex(int structureLength, POLE::Stream* stream, unsigned int fc, unsigned int lcb, int nWordVersion)
: m_bIsValid(false), CP_LENGTH(/*nWordVersion == 2 ? 2 :*/ 4)
{
if ((lcb > 0) && (NULL != stream))
{
VirtualStreamReader reader(stream, (ULONG)fc, nWordVersion);
if (fc > reader.GetSize()) return;
m_bIsValid = true;
int n = 0;
if (structureLength > 0)
{
// this PLEX contains CPs and Elements
n = ((int)lcb - CP_LENGTH) / (structureLength + CP_LENGTH);
}
else
{
// this PLEX only contains CPs
n = ((int)lcb - CP_LENGTH) / CP_LENGTH;
}
// read the n + 1 CPs
for (int i = 0; i < (n + 1); ++i)
{
int val = reader.ReadInt32();
mapCP.insert(std::make_pair(val, CharacterPositions.size()));
CharacterPositions.push_back(val);
}
// read the n structs
if (structureLength > 0)
{
for (int i = 0; i < n; ++i)
{
T object;
Elements.push_back(object.ConstructObject(&reader, structureLength));
}
}
}
}
~Plex()
{
for (size_t i = 0; i < Elements.size(); ++i)
{
RELEASEOBJECT(Elements[i]);
}
}
inline ByteStructure* GetStruct(size_t index)
{
if ((index >= 0) && (index < (int)Elements.size()))
return this->Elements[index];
return NULL;
}
inline ByteStructure* GetStructByCP(int cp)
{
std::map<int, size_t>::iterator pFind = mapCP.find(cp);
if (pFind != mapCP.end())
{
return GetStruct(pFind->second);
}
return NULL;
}
inline bool IsCpExists(int cp) const
{
bool result = false;
std::map<int, size_t>::const_iterator pFind = mapCP.find(cp);
if (pFind != mapCP.end())
{
result = true;
}
return result;
}
inline int operator [] (unsigned int index) const
{
if (index < (unsigned int)CharacterPositions.size())
return CharacterPositions[index];
return -1;
}
inline bool IsValid()
{
return m_bIsValid;
}
};
}