74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_CORE_RESOURCELOADER_HPP
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#define NAZARA_CORE_RESOURCELOADER_HPP
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#include <Nazara/Core/Enums.hpp>
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#include <Nazara/Core/Resource.hpp>
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#include <Nazara/Core/ResourceParameters.hpp>
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#include <filesystem>
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#include <functional>
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#include <memory>
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#include <type_traits>
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#include <vector>
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namespace Nz
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{
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class Stream;
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template<typename Type, typename Parameters>
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class ResourceLoader
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{
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static_assert(std::is_base_of<ResourceParameters, Parameters>::value, "ResourceParameters must be a base of Parameters");
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friend Type;
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public:
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struct Entry;
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using ExtensionSupport = std::function<bool(const std::string_view& extension)>;
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using FileLoader = std::function<std::shared_ptr<Type>(const std::filesystem::path& filePath, const Parameters& parameters)>;
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using MemoryLoader = std::function<std::shared_ptr<Type>(const void* data, std::size_t size, const Parameters& parameters)>;
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using StreamChecker = std::function<Ternary(Stream& stream, const Parameters& parameters)>;
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using StreamLoader = std::function<std::shared_ptr<Type>(Stream& stream, const Parameters& parameters)>;
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ResourceLoader() = default;
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ResourceLoader(const ResourceLoader&) = delete;
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ResourceLoader(ResourceLoader&&) noexcept = default;
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~ResourceLoader() = default;
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void Clear();
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bool IsExtensionSupported(const std::string_view& extension) const;
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std::shared_ptr<Type> LoadFromFile(const std::filesystem::path& filePath, const Parameters& parameters = Parameters()) const;
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std::shared_ptr<Type> LoadFromMemory(const void* data, std::size_t size, const Parameters& parameters = Parameters()) const;
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std::shared_ptr<Type> LoadFromStream(Stream& stream, const Parameters& parameters = Parameters()) const;
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const Entry* RegisterLoader(Entry loader);
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void UnregisterLoader(const Entry* loader);
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ResourceLoader& operator=(const ResourceLoader&) = delete;
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ResourceLoader& operator=(ResourceLoader&&) noexcept = default;
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struct Entry
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{
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ExtensionSupport extensionSupport;
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FileLoader fileLoader;
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MemoryLoader memoryLoader;
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StreamChecker streamChecker;
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StreamLoader streamLoader;
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};
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private:
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std::vector<std::unique_ptr<Entry>> m_loaders;
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};
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}
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#include <Nazara/Core/ResourceLoader.inl>
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#endif // NAZARA_CORE_RESOURCELOADER_HPP
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