SectorBuffer.h

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/****
 * SectorBuffer.h
 *
 * Copyright 2022 mikee47 <mike@sillyhouse.net>
 *
 * This file is part of the DiskStorage Library
 *
 * This library 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, version 3 or later.
 *
 * This library 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 this library.
 * If not, see <https://www.gnu.org/licenses/>.
 *
 ****/

#pragma once

#include <cstdint>
#include <memory>

namespace Storage
{
namespace Disk
{
class SectorBuffer : public std::unique_ptr<uint8_t[]>
{
public:
    SectorBuffer()
    {
    }

    SectorBuffer(size_t sectorSize, size_t sectorCount) : mSectorCount(sectorCount), mSize(sectorSize * sectorCount)
    {
        reset(new uint8_t[mSize]);
    }

    template <typename T> T& as()
    {
        return *reinterpret_cast<T*>(get());
    }

    template <typename T> const T& as() const
    {
        return *reinterpret_cast<const T*>(get());
    }

    size_t size() const
    {
        return mSize;
    }

    uint32_t sectors() const
    {
        return mSectorCount;
    }

    void clear()
    {
        fill(0);
    }

    void fill(uint8_t value)
    {
        std::fill_n(get(), mSize, value);
    }

    bool operator==(const SectorBuffer& other) const
    {
        return *this && other && mSize == other.mSize && memcmp(get(), other.get(), mSize) == 0;
    }

private:
    size_t mSectorCount{0};
    size_t mSize{0};
};

} // namespace Disk
} // namespace Storage