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#pragma once
#include "input.h"
#include "output.h"
#include <util/system/direct_io.h>
class TRandomAccessFileInput: public IInputStream {
public:
TRandomAccessFileInput(TDirectIOBufferedFile& file, ui64 position);
protected:
size_t DoRead(void* buf, size_t len) override;
size_t DoSkip(size_t len) override;
private:
TDirectIOBufferedFile& File;
ui64 Position;
};
class TRandomAccessFileOutput: public IOutputStream {
public:
TRandomAccessFileOutput(TDirectIOBufferedFile& file);
TRandomAccessFileOutput(TRandomAccessFileOutput&&) noexcept = default;
TRandomAccessFileOutput& operator=(TRandomAccessFileOutput&&) noexcept = default;
protected:
TDirectIOBufferedFile* File;
private:
void DoWrite(const void* buf, size_t len) override;
void DoFlush() override;
};
class TBufferedFileOutputEx: public TRandomAccessFileOutput {
public:
TBufferedFileOutputEx(const TString& path, EOpenMode oMode, size_t buflen = 1 << 17);
private:
void DoFlush() override;
void DoFinish() override;
THolder<TDirectIOBufferedFile> FileHolder;
};
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