mirror of
https://github.com/visualboyadvance-m/visualboyadvance-m
synced 2025-10-05 15:42:52 +02:00
4cf6cccbaf
Remove the SFML external dependency, include the SFML 3.0.1 system and network libraries in third_party and adjust the build code, tools and documentation accordingly. Signed-off-by: Rafael Kitover <rkitover@gmail.com>
93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
////////////////////////////////////////////////////////////
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//
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// SFML - Simple and Fast Multimedia Library
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// Copyright (C) 2007-2025 Laurent Gomila (laurent@sfml-dev.org)
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//
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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//
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/System/MemoryInputStream.hpp>
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#include <algorithm>
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#include <cstring>
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namespace sf
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{
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////////////////////////////////////////////////////////////
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MemoryInputStream::MemoryInputStream(const void* data, std::size_t sizeInBytes) :
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m_data(static_cast<const std::byte*>(data)),
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m_size(sizeInBytes)
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{
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}
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////////////////////////////////////////////////////////////
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std::optional<std::size_t> MemoryInputStream::read(void* data, std::size_t size)
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{
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if (!m_data)
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return std::nullopt;
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const std::size_t count = std::min(size, m_size - m_offset);
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if (count > 0)
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{
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std::memcpy(data, m_data + m_offset, static_cast<std::size_t>(count));
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m_offset += count;
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}
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return count;
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}
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////////////////////////////////////////////////////////////
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std::optional<std::size_t> MemoryInputStream::seek(std::size_t position)
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{
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if (!m_data)
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return std::nullopt;
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m_offset = position < m_size ? position : m_size;
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return m_offset;
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}
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////////////////////////////////////////////////////////////
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std::optional<std::size_t> MemoryInputStream::tell()
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{
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if (!m_data)
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return std::nullopt;
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return m_offset;
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}
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////////////////////////////////////////////////////////////
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std::optional<std::size_t> MemoryInputStream::getSize()
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{
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if (!m_data)
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return std::nullopt;
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return m_size;
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}
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} // namespace sf
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