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recent_sessions.cc

/*
    Copyright (C) 2004 Paul Davis 

    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, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <cerrno>
#include <unistd.h>
#include <fstream>
#include <algorithm>
#include <pbd/error.h>
#include <ardour/configuration.h>
#include <ardour/recent_sessions.h>
#include <ardour/utils.h>
#include "i18n.h"


using namespace std;
using namespace ARDOUR;

int
ARDOUR::read_recent_sessions (RecentSessions& rs)
{
      string path = Config->get_user_ardour_path();
      path += "/recent";

      ifstream recent (path.c_str());
      
      if (!recent) {
            if (errno != ENOENT) {
                  error << compose (_("cannot open recent session file %1 (%2)"), path, strerror (errno)) << endmsg;
                  return -1;
            } else {
                  return 1;
            }
      }

      while (true) {

            pair<string,string> newpair;

            getline(recent, newpair.first);

            if (!recent.good()) {
                  break;
            }
            
            getline(recent, newpair.second);

            if (!recent.good()) {
                  break;
            }

            if (!access(newpair.second.c_str(), R_OK)) {
                  rs.push_back (newpair);
            }
      }

      // This deletes any missing sessions
      ARDOUR::write_recent_sessions (rs);
      /* display sorting should be done in the GUI, otherwise the natural order will be broken */
      return 0;
}

int
ARDOUR::write_recent_sessions (RecentSessions& rs)
{
      string path = Config->get_user_ardour_path();
      path += "/recent";

      ofstream recent (path.c_str());

      if (!recent) {
            return -1;
      }

      for (RecentSessions::iterator i = rs.begin(); i != rs.end(); ++i) {
            recent << (*i).first << '\n' << (*i).second << endl;
      }
      
      return 0;
}
      
int
ARDOUR::store_recent_sessions (string name, string path)
{
      RecentSessions rs;

      if (ARDOUR::read_recent_sessions (rs) < 0) {
            return -1;
      }

      pair<string,string> newpair;

      newpair.first = name;
      newpair.second = path;

      rs.erase(remove(rs.begin(), rs.end(), newpair), rs.end());
      
      rs.push_front (newpair);

      if (rs.size() > 10) {
            rs.erase(rs.begin()+10, rs.end());
      }

      return ARDOUR::write_recent_sessions (rs);
}


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