OXYGENHUB
◆ main openmsx / src / fdc / DiskPartition.cc
1.5 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "DiskPartition.hh"
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#include "DiskImageUtils.hh"
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#include "Filename.hh"
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#include "strCat.hh"
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#include <cassert>
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namespace openmsx {
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using namespace DiskImageUtils;
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[[nodiscard]] static DiskName getDiskName(SectorAccessibleDisk* disk, unsigned partition)
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{
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	if (const auto* dsk = dynamic_cast<Disk*>(disk)) {
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		return {dsk->getName().getFilename(),
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		        strCat(':', partition)};
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	} else {
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		return DiskName(Filename("dummy"));
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	}
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}
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DiskPartition::DiskPartition(SectorAccessibleDisk& disk, unsigned partition,
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                             std::shared_ptr<SectorAccessibleDisk> owned_)
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	: SectorBasedDisk(getDiskName(&disk, partition))
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	, parent(disk)
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	, owned(std::move(owned_))
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{
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	assert(!owned || (owned.get() == &disk));
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	if (partition == 0) {
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		start = 0;
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		setNbSectors(disk.getNbSectors());
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	} else {
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		SectorBuffer buf;
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		const Partition& p = getPartition(disk, partition, buf); // throws
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		start = p.start;
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		setNbSectors(p.size);
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	}
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}
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DiskPartition::DiskPartition(SectorAccessibleDisk& parent_,
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                             size_t start_, size_t length)
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	: SectorBasedDisk(getDiskName(nullptr, 0))
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	, parent(parent_)
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	, start(start_)
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{
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	setNbSectors(length);
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}
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void DiskPartition::readSectorImpl(size_t sector, SectorBuffer& buf)
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{
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	parent.readSector(start + sector, buf);
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}
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void DiskPartition::writeSectorImpl(size_t sector, const SectorBuffer& buf)
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{
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	parent.writeSector(start + sector, buf);
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}
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bool DiskPartition::isWriteProtectedImpl() const
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{
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	return parent.isWriteProtected();
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}
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} // namespace openmsx