openspades/Sources/Core/MemoryStream.h

/*
 Copyright (c) 2013 yvt

 This file is part of OpenSpades.

 OpenSpades is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 OpenSpades is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with OpenSpades.  If not, see <http://www.gnu.org/licenses/>.

 */

#pragma once

#include "IStream.h"

namespace spades {
	class MemoryStream : public IStream {
		unsigned char *memory;
		uint64_t position;
		uint64_t length;
		bool canWrite;

	public:
		MemoryStream(char *buffer, size_t length, bool allowWrite);
		MemoryStream(const char *buffer, size_t length);
		~MemoryStream();

		int ReadByte() override;
		size_t Read(void *, size_t bytes) override;
		std::string Read(size_t maxBytes) override;

		void WriteByte(int) override;
		void Write(const void *, size_t bytes) override;

		uint64_t GetPosition() override;
		void SetPosition(uint64_t) override;

		uint64_t GetLength() override;
		/** prohibited */
		void SetLength(uint64_t) override;
	};
}