| /* Implementation of the PAUSE statement. |
| Copyright (C) 2002-2020 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, false); |
| estr_write ("RESUMED\n"); |
| } |
| |
| /* A numeric PAUSE statement. */ |
| |
| extern void pause_numeric (GFC_INTEGER_8); |
| export_proto(pause_numeric); |
| |
| void |
| pause_numeric (GFC_INTEGER_8 code) |
| { |
| st_printf ("PAUSE %ld\n", (long) code); |
| do_pause (); |
| } |
| |
| /* A character string or blank PAUSE statement. */ |
| |
| extern void pause_string (char *string, size_t len); |
| export_proto(pause_string); |
| |
| void |
| pause_string (char *string, size_t len) |
| { |
| struct iovec iov[3]; |
| |
| iov[0].iov_base = (char*) "PAUSE "; |
| iov[0].iov_len = strlen (iov[0].iov_base); |
| iov[1].iov_base = string; |
| iov[1].iov_len = len; |
| iov[2].iov_base = (char*) "\n"; |
| iov[2].iov_len = 1; |
| estr_writev (iov, 3); |
| |
| do_pause (); |
| } |