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more/io/redirection.h

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//  Copyright (C) 2001  Petter Urkedal (petter.urkedal@matfys.lth.se)
//
//  This file 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 file 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, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//  As a special exception, you may use this file as part of a free
//  software library without restriction.  Specifically, if other files
//  instantiate templates or use macros or inline functions from this
//  file, or you compile this file and link it with other files to
//  produce an executable, this file does not by itself cause the
//  resulting executable to be covered by the GNU General Public
//  License.  This exception does not however invalidate any other
//  reasons why the executable file might be covered by the GNU General
//  Public License.
//
//  $Id: redirection.h,v 1.1 2002/05/30 18:01:37 petter_urkedal Exp $


#ifndef MORE_IO_REDIRECTION_H
#define MORE_IO_REDIRECTION_H

#include <more/bits/config.h>
#include <more/gen/utility.h>
#include <string>

namespace more {
namespace io {

  struct redirection : more::gen::noncopyable
  {
      redirection();
      ~redirection();

      bool set_in(std::string const& nm)
      {
          return set(0, nm, 0660);
      }
      bool set_out(std::string const& nm)
      {
          return set(1, nm, 0660);
      }
      bool set_err(std::string const& nm)
      {
          return set(2, nm, 0660);
      }
      bool set_out_err(std::string const& nm)
      {
          return set(3, nm, 0660);
      }

      bool permanent() const;
      bool activate() const;
      void deactivate() const;

    private:
      bool set(int, std::string, int);
      bool set(int, int);

      int               m_set[3];
      mutable int       m_save[3];
  };

}} // more::io

#endif

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