64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
#pragma once
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#include <string_view>
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#include <optional>
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#include <filesystem>
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#include <fstream>
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#include <Windows.h>
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class RcResource
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{
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public:
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const std::byte* _memory = nullptr;
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size_t _size = 0;
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static inline std::optional<RcResource> create(int resource_id, const std::wstring_view resource_class, const HINSTANCE handle = nullptr)
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{
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const HRSRC resHandle = FindResourceW(handle, MAKEINTRESOURCEW(resource_id), resource_class.data());
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if (!resHandle)
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{
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return std::nullopt;
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}
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const HGLOBAL memHandle = LoadResource(handle, resHandle);
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if (!memHandle)
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{
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return std::nullopt;
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}
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const size_t resSize = SizeofResource(handle, resHandle);
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if (!resSize)
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{
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return std::nullopt;
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}
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auto res = static_cast<const std::byte*>(LockResource(memHandle));
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if (!res)
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{
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return std::nullopt;
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}
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return RcResource{ res, resSize };
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}
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inline bool saveAsFile(const std::filesystem::path destination)
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{
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std::fstream installerFile{ destination, std::ios_base::binary | std::ios_base::out | std::ios_base::trunc };
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if (!installerFile.is_open())
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{
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return false;
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}
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installerFile.write(reinterpret_cast<const char*>(_memory), _size);
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return true;
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}
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private:
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RcResource() = delete;
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RcResource(const std::byte* memory, size_t size) :
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_memory{ memory }, _size{ size }
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{
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}
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};
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