nod/lib/DiscIOISO.cpp

70 lines
1.8 KiB
C++

#include <cstdio>
#include "nod/Util.hpp"
#include "nod/IDiscIO.hpp"
#include "nod/IFileIO.hpp"
namespace nod
{
class DiscIOISO : public IDiscIO
{
std::unique_ptr<IFileIO> m_fio;
public:
DiscIOISO(SystemStringView fpin)
: m_fio(NewFileIO(fpin)) {}
class ReadStream : public IReadStream
{
friend class DiscIOISO;
std::unique_ptr<IFileIO::IReadStream> fp;
ReadStream(std::unique_ptr<IFileIO::IReadStream>&& fpin, bool& err)
: fp(std::move(fpin)) { if (!fp) err = true; }
public:
uint64_t read(void* buf, uint64_t length)
{return fp->read(buf, length);}
uint64_t position() const
{return fp->position();}
void seek(int64_t offset, int whence)
{fp->seek(offset, whence);}
};
std::unique_ptr<IReadStream> beginReadStream(uint64_t offset) const
{
bool Err = false;
auto ret = std::unique_ptr<IReadStream>(new ReadStream(m_fio->beginReadStream(offset), Err));
if (Err)
return {};
return ret;
}
class WriteStream : public IWriteStream
{
friend class DiscIOISO;
std::unique_ptr<IFileIO::IWriteStream> fp;
WriteStream(std::unique_ptr<IFileIO::IWriteStream>&& fpin, bool& err)
: fp(std::move(fpin)) { if (!fp) err = true; }
public:
uint64_t write(const void* buf, uint64_t length)
{
return fp->write(buf, length);
}
};
std::unique_ptr<IWriteStream> beginWriteStream(uint64_t offset) const
{
bool Err = false;
auto ret = std::unique_ptr<IWriteStream>(new WriteStream(m_fio->beginWriteStream(offset), Err));
if (Err)
return {};
return ret;
}
};
std::unique_ptr<IDiscIO> NewDiscIOISO(SystemStringView path)
{
return std::unique_ptr<IDiscIO>(new DiscIOISO(path));
}
}