/*
 * 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
 */
#pragma once

#include "IBinaryReader.h"
#include "../Common/Base/FormatUtils.h"

class MemoryStream: public IBinaryReader
{
public:
	MemoryStream (unsigned char* data, unsigned long size, bool bMemCopy = true);

	virtual ~MemoryStream();
	virtual _UINT64 ReadUInt64();
	virtual unsigned short ReadUInt16();
	void WriteUInt16(unsigned short val);
	virtual short ReadInt16();

	virtual int ReadInt32();
	void WriteInt32(_INT32 val);
	void Align(_UINT32 val);

	virtual unsigned int ReadUInt32();
	void WriteByte(unsigned char val);
	void WriteUInt32(_UINT32 val);
	virtual unsigned char ReadByte();

	virtual unsigned char* ReadBytes (unsigned int count, bool isResultNeeded);
	void WriteBytes(unsigned char* pData, int size);

	virtual unsigned long GetPosition() const;
	virtual unsigned long GetSize() const;
	virtual int Seek (int offset, int origin = 0/*STREAM_SEEK_SET*/);

private:

	unsigned char*	m_Data;
	unsigned long	m_Size;
	unsigned long	m_Position;
	bool			bMemoryCopy;
};