mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-27 14:50:23 +00:00
145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/* Implementation of the HOSTNM intrinsic.
|
|
Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
|
|
Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
|
|
|
|
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 <errno.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
|
|
/* Windows32 version */
|
|
#if defined __MINGW32__ && !defined HAVE_GETHOSTNAME
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include <windows.h>
|
|
#include <errno.h>
|
|
|
|
static int
|
|
w32_gethostname (char *name, size_t len)
|
|
{
|
|
/* We could try the WinSock API gethostname, but that will
|
|
fail if WSAStartup function has has not been called. We don't
|
|
really need a name that will be understood by socket API, so avoid
|
|
unnecessary dependence on WinSock libraries by using
|
|
GetComputerName instead. */
|
|
|
|
/* On Win9x GetComputerName fails if the input size is less
|
|
than MAX_COMPUTERNAME_LENGTH + 1. */
|
|
char buffer[MAX_COMPUTERNAME_LENGTH + 1];
|
|
DWORD size = sizeof (buffer);
|
|
|
|
if (!GetComputerName (buffer, &size))
|
|
return -1;
|
|
|
|
if ((size = strlen (buffer) + 1) > len)
|
|
{
|
|
errno = EINVAL;
|
|
/* Truncate as per POSIX spec. We do not NUL-terminate. */
|
|
size = len;
|
|
}
|
|
memcpy (name, buffer, (size_t) size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#undef gethostname
|
|
#define gethostname w32_gethostname
|
|
#define HAVE_GETHOSTNAME 1
|
|
|
|
#endif
|
|
|
|
|
|
/* SUBROUTINE HOSTNM(NAME, STATUS)
|
|
CHARACTER(len=*), INTENT(OUT) :: NAME
|
|
INTEGER, INTENT(OUT), OPTIONAL :: STATUS */
|
|
|
|
#ifdef HAVE_GETHOSTNAME
|
|
extern void hostnm_i4_sub (char *, GFC_INTEGER_4 *, gfc_charlen_type);
|
|
iexport_proto(hostnm_i4_sub);
|
|
|
|
void
|
|
hostnm_i4_sub (char *name, GFC_INTEGER_4 *status, gfc_charlen_type name_len)
|
|
{
|
|
int val, i;
|
|
char *p;
|
|
|
|
memset (name, ' ', name_len);
|
|
p = gfc_alloca (name_len + 1);
|
|
|
|
val = gethostname (p, name_len);
|
|
|
|
if (val == 0)
|
|
{
|
|
i = -1;
|
|
while (i < name_len && p[++i] != '\0')
|
|
name[i] = p[i];
|
|
}
|
|
|
|
if (status != NULL)
|
|
*status = (val == 0) ? 0 : errno;
|
|
}
|
|
iexport(hostnm_i4_sub);
|
|
|
|
extern void hostnm_i8_sub (char *, GFC_INTEGER_8 *, gfc_charlen_type);
|
|
iexport_proto(hostnm_i8_sub);
|
|
|
|
void
|
|
hostnm_i8_sub (char *name, GFC_INTEGER_8 *status, gfc_charlen_type name_len)
|
|
{
|
|
int val, i;
|
|
char *p;
|
|
|
|
memset (name, ' ', name_len);
|
|
p = gfc_alloca (name_len + 1);
|
|
|
|
val = gethostname (p, name_len);
|
|
|
|
if (val == 0)
|
|
{
|
|
i = -1;
|
|
while (i < name_len && p[++i] != '\0')
|
|
name[i] = p[i];
|
|
}
|
|
|
|
if (status != NULL)
|
|
*status = (val == 0) ? 0 : errno;
|
|
}
|
|
iexport(hostnm_i8_sub);
|
|
|
|
extern GFC_INTEGER_4 hostnm (char *, gfc_charlen_type);
|
|
export_proto(hostnm);
|
|
|
|
GFC_INTEGER_4
|
|
hostnm (char *name, gfc_charlen_type name_len)
|
|
{
|
|
GFC_INTEGER_4 val;
|
|
hostnm_i4_sub (name, &val, name_len);
|
|
return val;
|
|
}
|
|
#endif
|