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#pragma once
#include <util/generic/strbuf.h>
#include <util/generic/string.h>
#include <util/stream/output.h>
#include <memory>
#include <deque>
namespace NYql {
class TChunkedBuffer {
public:
TChunkedBuffer() = default;
TChunkedBuffer(const TChunkedBuffer&) = default;
TChunkedBuffer(TChunkedBuffer&& other);
TChunkedBuffer& operator=(TChunkedBuffer&& other);
explicit TChunkedBuffer(TStringBuf buf, const std::shared_ptr<const void>& owner);
explicit TChunkedBuffer(TString&& str);
inline size_t ContigousSize() const {
return Items_.empty() ? 0 : Front().Buf.size();
}
inline size_t Size() const {
return Size_;
}
inline bool Empty() const {
return Size_ == 0;
}
struct TChunk {
TStringBuf Buf;
std::shared_ptr<const void> Owner;
};
const TChunk& Front() const;
size_t CopyTo(IOutputStream& dst, size_t toCopy = std::numeric_limits<size_t>::max()) const;
TChunkedBuffer& Append(TStringBuf buf, const std::shared_ptr<const void>& owner);
TChunkedBuffer& Append(TString&& str);
TChunkedBuffer& Append(TChunkedBuffer&& other);
TChunkedBuffer& Clear();
TChunkedBuffer& Erase(size_t size);
private:
std::deque<TChunk> Items_;
size_t Size_ = 0;
};
class TChunkedBufferOutput : public IOutputStream {
public:
explicit TChunkedBufferOutput(TChunkedBuffer& dst);
private:
virtual void DoWrite(const void *buf, size_t len) override;
TChunkedBuffer& Dst_;
};
TChunkedBuffer CopyData(const TChunkedBuffer& src);
TChunkedBuffer CopyData(TChunkedBuffer&& src);
}
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