static_resource_view.hpp

// Copyright Take Vos 2020.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "resource_view.hpp"
#include "required.hpp"
#include <span>
#include <cstddef>
#include <unordered_map>
 
namespace hi::inline v1 {
 
class static_resource_view : public resource_view {
public:
    static_resource_view(std::string const &filename);
 
    static_resource_view() = delete;
    ~static_resource_view() = default;
    static_resource_view(static_resource_view const &other) = default;
    static_resource_view &operator=(static_resource_view const &other) = default;
    static_resource_view(static_resource_view &&other) = default;
    static_resource_view &operator=(static_resource_view &&other) = default;
 
    [[nodiscard]] std::size_t offset() const noexcept override
    {
        return 0;
    }
 
    [[nodiscard]] std::size_t size() const noexcept override
    {
        return _bytes.size();
    }
 
    [[nodiscard]] std::byte const *data() const noexcept override
    {
        return _bytes.data();
    }
 
    [[nodiscard]] std::span<std::byte const> bytes() const noexcept override
    {
        return _bytes;
    }
 
    [[nodiscard]] std::string_view string_view() const noexcept override
    {
        return {reinterpret_cast<char const *>(data()), size()};
    }
 
    [[nodiscard]] static std::unique_ptr<resource_view> loadView(std::string const &location)
    {
        return std::make_unique<static_resource_view>(location);
    }
 
    static std::span<std::byte const> get_static_resource(std::string const &filename);
 
private:
    // Borrowed reference from a byte array inside StaticResources.
    std::span<std::byte const> _bytes;
};
 
} // namespace hi::inline v1