/* Return the latest revision present in the archive.

  Copyright (C) 2004, 2005 Walter Landry
  
  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; version 2 dated June, 1991.

  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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA */

#include "arx_error.hpp"
#include "list_archive_revisions.hpp"
#include "Parsed_Name.hpp"
#include "Revision_List.hpp"

using namespace std;

Parsed_Name latest_archive_revision(const Parsed_Name &name)
{
  /* If the revision is already specified, just return that. */
  if(!name.revision().empty())
    return name;
  
  /* Otherwise, list all of the revisions and get the last one. */
  Revision_List rev_list(list_archive_revisions(name));
  if(rev_list.empty())
    throw arx_error("There are no revisions in the archive for this branch\n\t" + name.complete_branch());
  
  return Parsed_Name(name).set_revision(*(rev_list.rbegin()));
}