/*

   Copyright (c) 2000, 2010, Oracle and/or its affiliates

   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 of the License.

   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#include "mysys_priv.h"

#include <m_string.h>

  /* Returns full load-path for a file. to may be = path */

  /* if path is a hard-path return path */

  /* if path starts with home-dir return path */

  /* if path starts with current dir or parent-dir unpack path */

  /* if there is no path, prepend with own_path_prefix if given */

  /* else unpack path according to current dir */

char * my_load_path(char * to, const char *path,

           const char *own_path_prefix)

{

  char buff[FN_REFLEN+1];

  const char *from= buff;

  int is_cur;

  DBUG_ENTER("my_load_path");

  DBUG_PRINT("enter",("path: %s  prefix: %s",path,

          own_path_prefix ? own_path_prefix : ""));

  if ((path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) ||

      test_if_hard_path(path))

    from= path;

  else if ((is_cur=(path[0] == FN_CURLIB && path[1] == FN_LIBCHAR)) ||

     (is_prefix(path,FN_PARENTDIR)) ||

     ! own_path_prefix)

  {

    if (is_cur)

      is_cur=2;         /* Remove current dir */

    if (! my_getwd(buff,(uint) (FN_REFLEN-strlen(path)+is_cur),MYF(0)))

    {

      size_t length= strlen(buff);

      (void) strmake(buff + length, path+is_cur, FN_REFLEN - length);

    }

    else

      from= path;                           /* Return org file name */

  }

  else

    (void) strxnmov(buff, FN_REFLEN, own_path_prefix, path, NullS);

  strmake(to, from, FN_REFLEN-1);

  DBUG_PRINT("exit",("to: %s",to));

  DBUG_RETURN(to);

} /* my_load_path */