ColumnPrinter.h

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/* Frobby: Software for monomial ideal computations.
   Copyright (C) 2009 Bjarke Hammersholt Roune (www.broune.com)
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see http://www.gnu.org/licenses/.
*/
#ifndef COLUMN_PRINTER_GUARD
#define COLUMN_PRINTER_GUARD
 
#include "ElementDeleter.h"
 
#include <sstream>
#include <vector>
 
class FrobbyStringStream;
 
class ColumnPrinter {
 public:
  ColumnPrinter(size_t columnCount = 0);
 
  void setPrefix(const string& prefix);
  void addColumn(bool flushLeft = true,
                 const string& prefix = "  ", const string& suffix = "");
  size_t getColumnCount() const;
 
  ostream& operator[](size_t col);
 
  void print(ostream& out) const;
  void print(FrobbyStringStream& out) const;
 
 private:
  struct Col {
    string prefix;
    stringstream text;
    string suffix;
    bool flushLeft;
  };
  vector<Col*> _cols;
  ElementDeleter<vector<Col*> > _colsDeleter;
  string _prefix;
};
 
ostream& operator<<(ostream& out, const ColumnPrinter& printer);
void print(FILE* out, const ColumnPrinter& pr);
 
#endif