/*
   Please use git log for copyright holder and year information

   This file is part of libbash.

   libbash 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.

   libbash 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 libbash.  If not, see <http://www.gnu.org/licenses/>.
*/
///
/// \file variable_printer.cpp
/// \author Mu Qiao
/// \brief a program to write variables in a script into standard output
///

#include <algorithm>
#include <iostream>
#include <map>

#include <gtest/gtest.h>
#include <boost/spirit/include/karma.hpp>
#include <boost/fusion/include/std_pair.hpp>

#include "libbash.h"

static const std::vector<std::string> special_variables
{
  "IFS", "?"
};

int main(int argc, char** argv)
{
  if(argc != 2)
  {
    std::cerr<<"Please provide your script as an argument"<<std::endl;
    exit(EXIT_FAILURE);
  }

  std::unordered_map<std::string, std::vector<std::string>> variables;
  std::vector<std::string> functions;
  libbash::interpret(argv[1], variables, functions);

  std::map<std::string, std::vector<std::string>> sorted(variables.begin(), variables.end());
  // Currently we don't need internal variables
  for(auto iter = special_variables.begin(); iter != special_variables.end(); ++iter)
    sorted.erase(*iter);

  using namespace boost::spirit::karma;
  std::cout << format((string << '=' << -(string % ' ')) % eol, sorted) << std::endl;

  return 0;
}