table-printer.h

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// Copyright 2012 Cloudera Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


#ifndef IMPALA_UTIL_TABLE_PRINTER_H
#define IMPALA_UTIL_TABLE_PRINTER_H

#include <boost/uuid/uuid.hpp>

#include "gen-cpp/Types_types.h"  // for TUniqueId

namespace impala {

class TablePrinter {
 public:
  TablePrinter();

  void AddColumn(const std::string& label, bool left_align);

  void set_max_output_width(int width);

  void AddRow(const std::vector<std::string>& row);

  std::string ToString(const std::string& prefix = "") const;

 private:
  std::vector<std::string> labels_;
  std::vector<bool> left_align_;

  int max_output_width_;

  std::vector<std::vector<std::string> > rows_;
  std::vector<int> max_col_widths_;

  void PrintRow(std::stringstream* ss, const std::vector<std::string>& row,
      const std::vector<int>& widths) const;
};

}

#endif