gcc/f/runtime/libU77/ttynam_.c

   1 /* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   2 This file is part of GNU Fortran libU77 library.
   3
   4 This library is free software; you can redistribute it and/or modify it
   5 under the terms of the GNU Library General Public License as published
   6 by the Free Software Foundation; either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 GNU Fortran is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with GNU Fortran; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22 #if STDC_HEADERS
  23 #  include <stdlib.h>
  24 #endif
  25 #if HAVE_UNISTD_H
  26 #  include <unistd.h>           /* POSIX for ttyname */
  27 #endif
  28 #include <stdio.h>
  29 #if HAVE_STRING_H
  30 #  include <string.h>
  31 #else
  32 #  include <strings.h>
  33 #endif
  34 #include "f2c.h"
  35
  36 #ifdef KR_headers
  37 extern void s_copy ();
  38 extern integer G77_fnum_0 ();
  39 /* Character */ void G77_ttynam_0 (ret_val, ret_val_len, lunit)
  40      char *ret_val; ftnlen ret_val_len; integer *lunit
  41 #else
  42 extern integer G77_fnum_0 (integer *lunit);
  43 extern void s_copy(register char *a, register char *b, ftnlen la, ftnlen lb);
  44 /* Character */ void G77_ttynam_0 (char *ret_val, ftnlen ret_val_len, integer *lunit)
  45 #endif
  46 {
  47   size_t i;
  48   char *p;
  49
  50   p = ttyname (G77_fnum_0 (lunit));
  51   if (p != NULL) {
  52     i = strlen (p);
  53     s_copy (ret_val, p, ret_val_len, i);
  54   } else {
  55     s_copy (ret_val, " ", ret_val_len, 1);
  56   }
  57 }