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45 lines
730 B
C++
45 lines
730 B
C++
#ifndef DBMS_COMMON_WRITEBUFFER_FROM_OSTREAM_H
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#define DBMS_COMMON_WRITEBUFFER_FROM_OSTREAM_H
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#include <iostream>
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#include <DB/Core/Exception.h>
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#include <DB/Core/ErrorCodes.h>
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#include <DB/IO/WriteBuffer.h>
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#include <DB/IO/BufferWithOwnMemory.h>
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namespace DB
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{
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class WriteBufferFromOStream : public BufferWithOwnMemory<WriteBuffer>
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{
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private:
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std::ostream & ostr;
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void nextImpl()
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{
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if (!offset())
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return;
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ostr.write(working_buffer.begin(), offset());
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ostr.flush();
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if (!ostr.good())
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throw Exception("Cannot write to ostream", ErrorCodes::CANNOT_WRITE_TO_OSTREAM);
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}
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public:
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WriteBufferFromOStream(std::ostream & ostr_) : ostr(ostr_) {}
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~WriteBufferFromOStream()
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{
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nextImpl();
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}
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};
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}
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#endif
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