💿🐜 Antkeeper source code
https://antkeeper.com
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270 lines
5.6 KiB
270 lines
5.6 KiB
/*
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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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#include <engine/resources/physfs/physfs-deserialize-context.hpp>
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#include <engine/resources/deserialize-error.hpp>
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physfs_deserialize_context::physfs_deserialize_context(const std::filesystem::path& path)
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{
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// Open file for reading using PhysicsFS
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m_file = PHYSFS_openRead(path.string().c_str());
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if (!m_file)
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{
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throw deserialize_error(PHYSFS_getLastError());
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}
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// Store file path
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m_path = path;
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// Set EOF and error flags if file not open.
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m_eof = !m_file;
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m_error = !m_file;
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}
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physfs_deserialize_context::~physfs_deserialize_context()
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{
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if (m_file)
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{
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PHYSFS_close(m_file);
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}
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}
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void physfs_deserialize_context::open(const std::filesystem::path& path)
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{
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// Close file, if open
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if (m_file)
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{
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PHYSFS_close(m_file);
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}
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// Open file for reading using PhysicsFS
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m_file = PHYSFS_openRead(path.string().c_str());
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if (!m_file)
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{
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throw deserialize_error(PHYSFS_getLastError());
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}
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// Store file path
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m_path = path;
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// Set EOF and error flags if file not open.
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m_eof = !m_file;
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m_error = !m_file;
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}
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void physfs_deserialize_context::close() noexcept
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{
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if (m_file)
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{
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m_error = !PHYSFS_close(m_file);
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m_file = nullptr;
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m_path.clear();
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m_eof = true;
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}
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}
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bool physfs_deserialize_context::is_open() const noexcept
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{
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return m_file;
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}
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const std::filesystem::path& physfs_deserialize_context::path() const noexcept
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{
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return m_path;
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}
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bool physfs_deserialize_context::error() const noexcept
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{
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return m_error;
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}
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bool physfs_deserialize_context::eof() const noexcept
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{
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return m_eof;
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}
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std::size_t physfs_deserialize_context::size() const noexcept
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{
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const PHYSFS_sint64 length = PHYSFS_fileLength(m_file);
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if (length >= 0)
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{
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return static_cast<std::size_t>(length);
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}
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return 0;
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};
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std::size_t physfs_deserialize_context::tell() const
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{
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const PHYSFS_sint64 offset = PHYSFS_tell(m_file);
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if (offset < 0)
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{
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// m_error = true;
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throw deserialize_error(PHYSFS_getLastError());
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}
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return static_cast<std::size_t>(offset);
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}
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void physfs_deserialize_context::seek(std::size_t offset)
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{
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if (!PHYSFS_seek(m_file, static_cast<PHYSFS_uint64>(offset)))
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{
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m_error = true;
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throw deserialize_error(PHYSFS_getLastError());
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}
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m_eof = (PHYSFS_eof(m_file) != 0);
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}
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std::size_t physfs_deserialize_context::read8(std::byte* data, std::size_t count)
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{
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const PHYSFS_sint64 status = PHYSFS_readBytes(m_file, data, count);
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if (status != count)
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{
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if (status < 0 || !PHYSFS_eof(m_file))
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{
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m_error = true;
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throw deserialize_error(PHYSFS_getLastError());
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}
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m_eof = true;
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return static_cast<std::size_t>(status);
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}
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else
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{
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return count;
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}
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}
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std::size_t physfs_deserialize_context::read16_le(std::byte* data, std::size_t count)
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{
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PHYSFS_uint16* data16 = reinterpret_cast<PHYSFS_uint16*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readULE16(m_file, data16))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data16;
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}
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return count;
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}
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std::size_t physfs_deserialize_context::read16_be(std::byte* data, std::size_t count)
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{
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PHYSFS_uint16* data16 = reinterpret_cast<PHYSFS_uint16*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readUBE16(m_file, data16))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data16;
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}
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return count;
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}
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std::size_t physfs_deserialize_context::read32_le(std::byte* data, std::size_t count)
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{
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PHYSFS_uint32* data32 = reinterpret_cast<PHYSFS_uint32*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readULE32(m_file, data32))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data32;
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}
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return count;
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}
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std::size_t physfs_deserialize_context::read32_be(std::byte* data, std::size_t count)
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{
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PHYSFS_uint32* data32 = reinterpret_cast<PHYSFS_uint32*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readUBE32(m_file, data32))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data32;
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}
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return count;
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}
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std::size_t physfs_deserialize_context::read64_le(std::byte* data, std::size_t count)
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{
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PHYSFS_uint64* data64 = reinterpret_cast<PHYSFS_uint64*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readULE64(m_file, data64))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data64;
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}
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return count;
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}
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std::size_t physfs_deserialize_context::read64_be(std::byte* data, std::size_t count)
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{
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PHYSFS_uint64* data64 = reinterpret_cast<PHYSFS_uint64*>(data);
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for (std::size_t i = 0; i < count; ++i)
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{
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if (!PHYSFS_readUBE64(m_file, data64))
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{
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m_error = true;
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m_eof = (PHYSFS_eof(m_file) != 0);
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throw deserialize_error(PHYSFS_getLastError());
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}
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++data64;
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}
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return count;
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}
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