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070efd99e0
Fixes "error: use of undeclared identifier 'nullptr_t'; did you mean 'nullptr'?" when compiling with Xcode 12.4.
37 lines
908 B
C++
37 lines
908 B
C++
//
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// 2MG.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 23/11/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#pragma once
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#include "../DiskImage.hpp"
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#include "../../../MassStorage/MassStorageDevice.hpp"
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#include "../../../FileHolder.hpp"
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#include <cstddef>
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#include <variant>
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namespace Storage::Disk {
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/*!
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2MG is slightly special because it's just a container format; there's a brief header and then
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the contents are some other file format — either MacintoshIMG or AppleDSK.
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Therefore it supplies a factory method and will actually return one of those.
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TODO: should I generalise on factory methods? Is this likely to occur again?
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*/
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class Disk2MG {
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public:
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using DiskOrMassStorageDevice = std::variant<std::nullptr_t, DiskImageHolderBase *, Storage::MassStorage::MassStorageDevice *>;
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static DiskOrMassStorageDevice open(const std::string &file_name);
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};
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}
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