io.h

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// Author(s): Wieger Wesselink
// Copyright: see the accompanying file COPYING or copy at
// https://github.com/mCRL2org/mCRL2/blob/master/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
 
#ifndef MCRL2_UTILITIES_DETAIL_IO_H
#define MCRL2_UTILITIES_DETAIL_IO_H
 
#include <fstream>
#include "mcrl2/utilities/exception.h"
#include "mcrl2/utilities/text_utility.h"
 
namespace mcrl2 {
 
namespace utilities {
 
namespace detail {
 
inline
std::string read_text(const std::string& filename)
{
  if (filename.empty())
  {
    return utilities::read_text(std::cin);
  }
  else
  {
    std::ifstream from(filename.c_str());
    if (!from.good())
    {
      throw mcrl2::runtime_error("Could not read from filename " + filename);
    }
    return utilities::read_text(from);
  }
}
 
inline
void write_text(const std::string& filename, const std::string& text)
{
  if (filename.empty())
  {
    std::cout << text;
  }
  else
  {
    std::ofstream to(filename);
    if (!to.good())
    {
      throw mcrl2::runtime_error("Could not write to filename " + filename);
    }
    to << text;
  }
}
 
} // namespace detail
 
} // namespace utilities
 
} // namespace mcrl2
 
#endif // MCRL2_UTILITIES_DETAIL_IO_H