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/* Copyright (C) 2000 MySQL AB

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


#include "mysys_priv.h"
#include <m_string.h>

/*
  Return a pointerto the extension of the filename
  The pointer points at the extension character (normally '.'))
  If there isn't any extension, the pointer points at the end
  ASCII(0) of the filename.
*/

my_string fn_ext(const char *name)
{
  register my_string pos,gpos;
  DBUG_ENTER("fn_ext");
  DBUG_PRINT("mfunkt",("name: '%s'",name));

#if defined(FN_DEVCHAR) || defined(FN_C_AFTER_DIR)
  {
    char buff[FN_REFLEN];
    gpos=(my_string) name+dirname_part(buff,(char*) name);
  }
#else
  if (!(gpos=strrchr(name,FNLIBCHAR)))
    gpos=name;
#endif
  pos=strrchr(gpos,FN_EXTCHAR);
  DBUG_RETURN (pos ? pos : strend(gpos));
} /* fn_ext */