/*
# extend-fname.c: give a filename a suffix, if necessary.
#
# Copyright (C) 1992, 1993, 2011 Free Software Foundation, Inc.
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
*/



#include "config.h"


/* We may or may not return NAME.  It's up to the caller not to assume
   the return value is modifiable.  */

string 
extend_filename P2C(const_string, name, const_string, default_suffix)
{
  string new_s;
  const_string suffix = find_suffix (name);

  new_s = suffix == NULL ? concat3 (name, ".", default_suffix)
                         : (string) name;
  return new_s;
}