gcc/libgfortran/runtime/pause.c

72 lines
1.7 KiB
C

/* Implementation of the STOP statement.
Copyright 2002 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfor).
Libgfor is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Libgfor 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with libgfor; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "config.h"
#include <string.h>
#include <stdio.h>
#include "libgfortran.h"
#define pause_numeric prefix(pause_numeric)
#define pause_string prefix(pause_string)
static void
do_pause (void)
{
char buff[4];
st_printf ("To resume execution, type go. "
"Other input will terminate the job.\n");
fgets(buff, 4, stdin);
if (strncmp(buff, "go\n", 3) != 0)
stop_numeric (-1);
st_printf ("RESUMED\n");
}
/* A numeric or blank STOP statement. */
void
pause_numeric (GFC_INTEGER_4 code)
{
show_locus ();
if (code == -1)
st_printf ("PAUSE\n");
else
st_printf ("PAUSE %d\n", (int)code);
do_pause ();
}
void
pause_string (char *string, GFC_INTEGER_4 len)
{
show_locus ();
st_printf ("PAUSE ");
while (len--)
st_printf ("%c", *(string++));
st_printf ("\n");
do_pause ();
}