core/OOXML/XlsbFormat/MetadataStream.cpp

/*
 * 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 "MetadataStream.h"

#include "Biff12_records/CommonRecords.h"
#include "Biff12_unions/ESMDTINFO.h"
#include "Biff12_unions/ESSTR.h"
#include "Biff12_unions/ESMDX.h"
#include "Biff12_unions/ESFMD.h"
#include "Biff12_unions/ESMDB.h"

#include "Biff12_records/BeginMetadata.h"
#include "Biff12_records/BeginEsmdb.h"
#include "Biff12_records/EndMetadata.h"

using namespace XLS;

namespace XLSB
{

MetadataStream::MetadataStream()
{
}

MetadataStream::~MetadataStream()
{
}


BaseObjectPtr MetadataStream::clone()
{
    return BaseObjectPtr(new MetadataStream(*this));
}

const bool MetadataStream::loadContent(BinProcessor& proc)
{	
    while (true)
    {
        CFRecordType::TypeId type = proc.getNextRecordType();

        if (type == rt_NONE) break;

        switch(type)
        {
        case rt_BeginEsmdtinfo:
        {
            if (proc.optional<ESMDTINFO>())
            {
                m_ESMDTINFO = elements_.back();
                elements_.pop_back();
            }
        }break;
        case rt_BeginEsstr:
        {
            if (proc.optional<ESSTR>())
            {
                m_ESSTR = elements_.back();
                elements_.pop_back();
            }
        }break;
        case rt_BeginEsmdx:
        {
            if (proc.optional<ESMDX>())
            {
                m_ESMDX = elements_.back();
                elements_.pop_back();
            }
        }break;
        case rt_BeginEsfmd:
        {
            int count = proc.repeated<ESFMD>(0, 0);
            while(count > 0)
            {
                m_ESFMDs.insert(m_ESFMDs.begin(), elements_.back());
                elements_.pop_back();
                count--;
            }
        }break;
        case rt_BeginEsmdb:
        {
            if (proc.optional<ESMDB>())
            {
                auto beginPtr = static_cast<BeginEsmdb*>(static_cast<ESMDB*>(elements_.back().get())->m_BrtBeginEsmdb.get());
                if(beginPtr->fCellMeta)
                    m_CellMetadataBlocks = elements_.back();
                else
                    m_ValueMetadataBlocks = elements_.back();
                elements_.pop_back();
            }
        }break;
        case rt_EndMetadata:
        {
            return true;
        }break;
        default://skip
        {
            proc.SkipRecord();
        }break;
        }
    }
	return true;
}

const bool MetadataStream::saveContent(XLS::BinProcessor & proc)
{
    proc.mandatory<XLSB::BeginMetadata>();
    if (m_ESMDTINFO != nullptr)
        proc.mandatory(*m_ESMDTINFO);
    if (m_ESSTR != nullptr)
        proc.mandatory(*m_ESSTR);
    if (m_ESMDX != nullptr)
        proc.mandatory(*m_ESMDX);
    for(auto i:m_ESFMDs)
        proc.mandatory(*i);
    if (m_CellMetadataBlocks != nullptr)
        proc.mandatory(*m_CellMetadataBlocks);
    if (m_ValueMetadataBlocks != nullptr)
        proc.mandatory(*m_ValueMetadataBlocks);   
    proc.mandatory<XLSB::EndMetadata>();
    return true;
}

} // namespace XLSB