/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02111-1301, USA */

/* Returnerar en pekare till filnamnets extension. */

#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
	   NULL 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 */