75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* Implementation of the PAUSE statement.
|
|
Copyright (C) 2002-2017 Free Software Foundation, Inc.
|
|
Contributed by Paul Brook <paul@nowt.org>
|
|
|
|
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>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
|
|
static void
|
|
do_pause (void)
|
|
{
|
|
char buff[4];
|
|
estr_write ("To resume execution, type go. "
|
|
"Other input will terminate the job.\n");
|
|
|
|
fgets(buff, 4, stdin);
|
|
if (strncmp(buff, "go\n", 3) != 0)
|
|
stop_string ('\0', 0);
|
|
estr_write ("RESUMED\n");
|
|
}
|
|
|
|
/* A numeric PAUSE statement. */
|
|
|
|
extern void pause_numeric (GFC_INTEGER_4);
|
|
export_proto(pause_numeric);
|
|
|
|
void
|
|
pause_numeric (GFC_INTEGER_4 code)
|
|
{
|
|
st_printf ("PAUSE %d\n", (int) code);
|
|
do_pause ();
|
|
}
|
|
|
|
/* A character string or blank PAUSE statement. */
|
|
|
|
extern void pause_string (char *string, GFC_INTEGER_4 len);
|
|
export_proto(pause_string);
|
|
|
|
void
|
|
pause_string (char *string, GFC_INTEGER_4 len)
|
|
{
|
|
estr_write ("PAUSE ");
|
|
ssize_t w = write (STDERR_FILENO, string, len);
|
|
(void) sizeof (w); /* Avoid compiler warning about not using write
|
|
return val. */
|
|
estr_write ("\n");
|
|
|
|
do_pause ();
|
|
}
|