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#pragma once
#include <IO/StdStreamBufFromReadBuffer.h>
#include <memory>
namespace DB
{
class ReadBuffer;
/// `std::istream`-compatible wrapper around a ReadBuffer.
class StdIStreamFromReadBuffer : public std::istream
{
public:
using Base = std::istream;
StdIStreamFromReadBuffer(std::unique_ptr<ReadBuffer> buf, size_t size) : Base(&stream_buf), stream_buf(std::move(buf), size) { }
StdIStreamFromReadBuffer(ReadBuffer & buf, size_t size) : Base(&stream_buf), stream_buf(buf, size) { }
StdStreamBufFromReadBuffer * rdbuf() const { return const_cast<StdStreamBufFromReadBuffer *>(&stream_buf); }
private:
StdStreamBufFromReadBuffer stream_buf;
};
/// `std::iostream`-compatible wrapper around a ReadBuffer.
class StdStreamFromReadBuffer : public std::iostream
{
public:
using Base = std::iostream;
StdStreamFromReadBuffer(std::unique_ptr<ReadBuffer> buf, size_t size) : Base(&stream_buf), stream_buf(std::move(buf), size) { }
StdStreamFromReadBuffer(ReadBuffer & buf, size_t size) : Base(&stream_buf), stream_buf(buf, size) { }
StdStreamBufFromReadBuffer * rdbuf() const { return const_cast<StdStreamBufFromReadBuffer *>(&stream_buf); }
private:
StdStreamBufFromReadBuffer stream_buf;
};
}
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