99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/* Implementation of the GETCWD intrinsic.
|
|
Copyright (C) 2004-2021 Free Software Foundation, Inc.
|
|
Contributed by Steven G. Kargl <kargls@comcast.net>.
|
|
|
|
This file is part of the GNU Fortran 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)
|
|
{
|
|
int err;
|
|
|
|
if (getcwd (cwd, cwd_len))
|
|
{
|
|
size_t len = strlen (cwd);
|
|
memset (cwd + len, ' ', cwd_len - len);
|
|
err = 0;
|
|
}
|
|
else if (errno == ERANGE)
|
|
{
|
|
/* There is a possibility that the previous attempt failed due
|
|
to not enough space for the terminating null byte. Try again
|
|
with a buffer one char longer. */
|
|
char *buf = xmalloc (cwd_len + 1);
|
|
if (getcwd (buf, cwd_len + 1))
|
|
{
|
|
memcpy (cwd, buf, cwd_len);
|
|
err = 0;
|
|
}
|
|
else
|
|
err = errno;
|
|
free (buf);
|
|
}
|
|
else
|
|
err = errno;
|
|
if (err)
|
|
memset (cwd, ' ', cwd_len);
|
|
if (status != NULL)
|
|
*status = err;
|
|
}
|
|
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
|