/* extend-fname.c: give a filename a suffix, if necessary. Copyright 1992, 1993, 2008, 2011 Karl Berry. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see . */ #include const_string extend_filename (const_string name, const_string default_suffix) { const_string new_s; const_string suffix = find_suffix (name); new_s = suffix == NULL ? concat3 (name, ".", default_suffix) : name; return new_s; }