OXYGENHUB
◆ main openmsx / src / unittest / MemoryBufferFile.cc
1.1 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "MemoryBufferFile.hh"
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#include "File.hh"
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#include "FileException.hh"
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#include "ranges.hh"
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#include <memory>
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namespace openmsx {
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void MemoryBufferFile::read(std::span<uint8_t> dst)
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{
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	if (getSize() < (getPos() + dst.size())) {
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		throw FileException("Read beyond end of file");
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	}
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	copy_to_range(buffer.subspan(pos, dst.size()), dst);
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	pos += dst.size();
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}
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void MemoryBufferFile::write(std::span<const uint8_t> /*src*/)
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{
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	throw FileException("Writing to MemoryBufferFile not supported");
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}
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MappedFileImpl MemoryBufferFile::mmap(size_t extra, bool is_const)
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{
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	return {buffer, extra, is_const};
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}
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size_t MemoryBufferFile::getSize()
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{
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	return buffer.size();
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}
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void MemoryBufferFile::seek(size_t newPos)
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{
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	pos = newPos;
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}
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size_t MemoryBufferFile::getPos()
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{
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	return pos;
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}
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void MemoryBufferFile::flush()
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{
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	// nothing
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}
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bool MemoryBufferFile::isReadOnly() const
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{
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	return true;
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}
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time_t MemoryBufferFile::getModificationDate()
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{
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	return 0;
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}
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File memory_buffer_file(std::span<const uint8_t> buffer)
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{
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	return File(std::make_unique<MemoryBufferFile>(buffer));
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}
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} // namespace openmsx