mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-14 03:25:15 +00:00
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#pragma once
|
||
|
||
#include <Poco/SharedPtr.h>
|
||
|
||
#include <DB/Core/Block.h>
|
||
#include <DB/IO/WriteBuffer.h>
|
||
#include <DB/DataStreams/IRowOutputStream.h>
|
||
|
||
|
||
namespace DB
|
||
{
|
||
|
||
/** Поток для вывода данных в формате tsv.
|
||
*/
|
||
class TabSeparatedRowOutputStream : public IRowOutputStream
|
||
{
|
||
public:
|
||
/** with_names - выводить в первой строке заголовок с именами столбцов
|
||
* with_types - выводить на следующей строке заголовок с именами типов
|
||
*/
|
||
TabSeparatedRowOutputStream(WriteBuffer & ostr_, const Block & sample_, bool with_names_ = false, bool with_types_ = false);
|
||
|
||
void writeField(const Field & field) override;
|
||
void writeFieldDelimiter() override;
|
||
void writeRowEndDelimiter() override;
|
||
void writePrefix() override;
|
||
void writeSuffix() override;
|
||
|
||
void flush() override { ostr.next(); }
|
||
|
||
void setTotals(const Block & totals_) override { totals = totals_; }
|
||
void setExtremes(const Block & extremes_) override { extremes = extremes_; }
|
||
|
||
/// https://www.iana.org/assignments/media-types/text/tab-separated-values
|
||
String getContentType() const override { return "text/tab-separated-values; charset=UTF-8"; }
|
||
|
||
protected:
|
||
void writeTotals();
|
||
void writeExtremes();
|
||
|
||
WriteBuffer & ostr;
|
||
const Block sample;
|
||
bool with_names;
|
||
bool with_types;
|
||
DataTypes data_types;
|
||
size_t field_number;
|
||
Block totals;
|
||
Block extremes;
|
||
};
|
||
|
||
}
|
||
|