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more/phys/ens_db.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: ens_db.h,v 1.1 2002/05/30 18:01:40 petter_urkedal Exp $

//  !! THIS IS AS INTERNAL HEADER !!

#ifndef MORE_PHYS_ENS_DB_H
#define MORE_PHYS_ENS_DB_H

#include <more/phys/nuclear.h>

namespace more {
namespace phys {
namespace ens {

  /** A handle to an ENSDF provider. A default instance of this class
      is provided by the static member function default_db(), so in most
      cases it is sufficient to call
      file_repository::default_db()->fetch_file(nucl). */
  struct ensdb
  {
      ensdb();

      std::string
      fetch_file(more::phys::nucleus const& nuc, bool force = false);

      void set_cache(std::string s) {
          local_dir = s;
      }

      void set_source(std::string form_url_, std::string download_url_) {
          form_url = form_url_;
          download_url = download_url_;
      }

      void disable_fetcher() { m_try_fetcher = false; }
      void enable_compression(bool c) { m_do_compress = c; }

    private:
      std::string local_dir;
      std::string form_url;
      std::string download_url;
      bool m_try_fetcher;
      bool m_do_compress;

    public:
      static ensdb* default_db() {
          if (!s_default) s_default = new ensdb;
          return s_default;
      }
    private:
      static ensdb* s_default;
  };
}}}

#endif

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