ClickHouse/dbms/src/DataStreams/PrettyCompactMonoBlockOutputStream.cpp

#include <sys/ioctl.h>
#include <unistd.h>

#include <DB/DataStreams/PrettyCompactMonoBlockOutputStream.h>


namespace DB
{

void PrettyCompactMonoBlockOutputStream::write(const Block & block)
{
	if (total_rows < max_rows)
		blocks.push_back(block);

	total_rows += block.rows();
}

void PrettyCompactMonoBlockOutputStream::writeSuffix()
{
	if (blocks.empty())
		return;

	Widths_t max_widths;
	Widths_t name_widths;

	for (size_t i = 0; i < blocks.size(); ++i)
		calculateWidths(blocks[i], max_widths, name_widths);

	writeHeader(blocks.front(), max_widths, name_widths);

	size_t row_count = 0;

	for (size_t block_id = 0; block_id < blocks.size() && row_count < max_rows; ++block_id)
	{
		const Block & block = blocks[block_id];
		size_t rows = block.rows();

		for (size_t i = 0; i < rows && row_count < max_rows; ++i)
		{
			writeRow(i, block, max_widths, name_widths);
			++row_count;
		}
	}

	writeBottom(max_widths);

	if (total_rows >= max_rows)
	{
		writeCString("  Showed first ", ostr);
		writeIntText(max_rows, ostr);
		writeCString(".\n", ostr);
	}

	total_rows = 0;

	if (totals)
	{
		writeCString("\nTotals:\n", ostr);
		PrettyCompactBlockOutputStream::write(totals);
	}

	if (extremes)
	{
		writeCString("\nExtremes:\n", ostr);
		PrettyCompactBlockOutputStream::write(extremes);
	}
}

}