nod/lib/DiscIOISO.cpp

60 lines
1.7 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)); }
} // namespace nod