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/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_RESOURCES_PHYSFS_DESERIALIZE_CONTEXT_HPP
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#define ANTKEEPER_RESOURCES_PHYSFS_DESERIALIZE_CONTEXT_HPP
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#include <engine/resources/deserialize-context.hpp>
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#include <physfs.h>
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#include <filesystem>
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/**
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* Deserialize context implementation using PhysicsFS.
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*/
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class physfs_deserialize_context: public deserialize_context
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{
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public:
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/**
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* Constructs a PhysicsFS deserialize context, opening a file using PhysicsFS and associating it with this deserialize context.
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*
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* @param path Path to a file to open.
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*
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* @throw deserialize_error File open error.
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*/
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explicit physfs_deserialize_context(const std::filesystem::path& path) noexcept(false);
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/**
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* Constructs a PhysicsFS deserialize context.
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*/
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physfs_deserialize_context() noexcept = default;
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/**
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* Destructs a PhysicsFS deserialize context, internally closing a file using PhysicsFS.
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*/
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virtual ~physfs_deserialize_context();
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/**
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* Opens a file using PhysicsFS and associates it with the deserialize context.
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*
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* @param path Path to a file to open.
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*
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* @throw deserialize_error File open error.
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*/
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void open(const std::filesystem::path& path) noexcept(false);
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/**
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* Closes the associated file using PhysicsFS.
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*/
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void close() noexcept;
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/**
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* Returns `true` if the PhysicsFS file associated with this deserialize context is open, `false` otherwise.
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*/
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[[nodiscard]] bool is_open() const noexcept;
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[[nodiscard]] const std::filesystem::path& path() const noexcept override;
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[[nodiscard]] bool error() const noexcept override;
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[[nodiscard]] bool eof() const noexcept override;
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[[nodiscard]] std::size_t size() const noexcept override;
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[[nodiscard]] std::size_t tell() const override;
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void seek(std::size_t offset) override;
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std::size_t read8(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read16_le(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read16_be(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read32_le(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read32_be(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read64_le(std::byte* data, std::size_t count) noexcept(false) override;
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std::size_t read64_be(std::byte* data, std::size_t count) noexcept(false) override;
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private:
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PHYSFS_File* file{nullptr};
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std::filesystem::path m_path;
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bool m_eof{true};
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bool m_error{false};
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};
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#endif // ANTKEEPER_RESOURCES_PHYSFS_DESERIALIZE_CONTEXT_HPP
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