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76ee07f61c
Co-authored-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com> Co-committed-by: Alexander Trofimov <alexander.trofimov@onlyoffice.com>
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
/*
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* Copyright (C) Ascensio System SIA, 2009-2026
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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, together with the
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* additional terms provided in the LICENSE file.
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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: https://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA by email at info@onlyoffice.com
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* or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
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* LV-1050, Latvia, European Union.
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*
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* The interactive user interfaces in modified versions of the Program
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* are required to display Appropriate Legal Notices in accordance with
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* Section 5 of the GNU AGPL version 3.
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*
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* No trademark rights are granted under this License.
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*
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* All non-code elements of the Product, including illustrations,
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* icon sets, and technical writing content, are licensed under the
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* Creative Commons Attribution-ShareAlike 4.0 International License:
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* https://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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* This license applies only to such non-code elements and does not
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* modify or replace the licensing terms applicable to the Program's
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* source code, which remains licensed under the GNU Affero General
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* Public License v3.
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*
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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#pragma once
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#include <iostream>
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#include <list>
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#include "sector.h"
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#include "slist.h"
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#include "svector.h"
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namespace CFCPP
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{
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class StreamView : public IStream
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{
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public:
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StreamView(const SVector<Sector> §orChain, _INT32 sectorSize, Stream stream);
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StreamView(const SVector<Sector> §orChain, _INT32 sectorSize, _INT64 length,
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SList<Sector> &availableSectors, Stream stream, bool isFatStream = false);
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_INT64 tell() override;
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_INT64 seek(_INT64 offset, std::ios_base::seekdir mode = std::ios::beg) override;
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_INT64 read(char *buffer, _INT64 count) override;
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void write(const char *buffer, _INT64 count) override;
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void flush() override {}
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void close() override;
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bool isError() override;
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_INT64 getPosition() const;
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void SetLength(_INT64 value);
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_INT64 getLength() const;
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SVector<Sector>& BaseSectorChain();
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_INT32 ReadInt32();
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void WriteInt32(_INT32 val);
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private:
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void adjustLength(_INT64 value);
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void adjustLength(_INT64 value, SList<Sector> &availableSectors);
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private:
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_INT32 sectorSize = 0;
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_INT64 length = 0;
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SVector<Sector> sectorChain;
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bool isFatStream = false;
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_INT32 buf = 0;
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Stream stream;
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_INT64 position = 0;
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SList<Sector> freeSectors;
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};
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}
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