gcc/libgfortran/runtime/pause.c

72 lines
1.9 KiB
C

/* Implementation of the STOP statement.
Copyright 2002, 2005, 2007, 2009 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
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>
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. */
extern void pause_numeric (GFC_INTEGER_4 code);
export_proto(pause_numeric);
void
pause_numeric (GFC_INTEGER_4 code)
{
if (code == -1)
st_printf ("PAUSE\n");
else
st_printf ("PAUSE %d\n", (int)code);
do_pause ();
}
extern void pause_string (char *string, GFC_INTEGER_4 len);
export_proto(pause_string);
void
pause_string (char *string, GFC_INTEGER_4 len)
{
st_printf ("PAUSE ");
while (len--)
st_printf ("%c", *(string++));
st_printf ("\n");
do_pause ();
}