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/* Implementation of the GETCWD intrinsic.

   Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.

   Contributed by Steven G. Kargl <kargls@comcast.net>.

This file is part of the GNU Fortran 95 runtime library (libgfortran).

Libgfortran 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.

Libgfortran 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.

Under Section 7 of GPL version 3, you are granted additional

permissions described in the GCC Runtime Library Exception, version

3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and

a copy of the GCC Runtime Library Exception along with this program;

see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

<http://www.gnu.org/licenses/>.  */

#include "libgfortran.h"

#include <string.h>

#include <errno.h>

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

#ifdef HAVE_GETCWD

extern void getcwd_i4_sub (char *, GFC_INTEGER_4 *, gfc_charlen_type);

iexport_proto(getcwd_i4_sub);

void

getcwd_i4_sub (char *cwd, GFC_INTEGER_4 *status, gfc_charlen_type cwd_len)

{

  char str[cwd_len + 1];

  GFC_INTEGER_4 stat;

  memset(cwd, ' ', (size_t) cwd_len);

  if (!getcwd (str, (size_t) cwd_len + 1))

    stat = errno;

  else

    {

      stat = 0;

      memcpy (cwd, str, strlen (str));

    }

  if (status != NULL)

    *status = stat;

}

iexport(getcwd_i4_sub);

extern void getcwd_i8_sub (char *, GFC_INTEGER_8 *, gfc_charlen_type);

export_proto(getcwd_i8_sub);

void

getcwd_i8_sub (char *cwd, GFC_INTEGER_8 *status, gfc_charlen_type cwd_len)

{

  GFC_INTEGER_4 status4;

  getcwd_i4_sub (cwd, &status4, cwd_len);

  if (status)

    *status = status4;

}

extern GFC_INTEGER_4 PREFIX(getcwd) (char *, gfc_charlen_type);

export_proto_np(PREFIX(getcwd));

GFC_INTEGER_4

PREFIX(getcwd) (char *cwd, gfc_charlen_type cwd_len)

{

  GFC_INTEGER_4 status;

  getcwd_i4_sub (cwd, &status, cwd_len);

  return status;

}

#endif