mdw@git.distorted.org.uk Git - lisp/blob - sys-base.lisp

   1 ;;; -*-lisp-*-
   2 ;;;
   3 ;;; $Id$
   4 ;;;
   5 ;;; Basic system-specific stuff
   6 ;;;
   7 ;;; (c) 2005 Mark Wooding
   8 ;;;
   9
  10 ;;;----- Licensing notice ---------------------------------------------------
  11 ;;;
  12 ;;; This program is free software; you can redistribute it and/or modify
  13 ;;; it under the terms of the GNU General Public License as published by
  14 ;;; the Free Software Foundation; either version 2 of the License, or
  15 ;;; (at your option) any later version.
  16 ;;;
  17 ;;; This program is distributed in the hope that it will be useful,
  18 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;;; GNU General Public License for more details.
  21 ;;;
  22 ;;; You should have received a copy of the GNU General Public License
  23 ;;; along with this program; if not, write to the Free Software Foundation,
  24 ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25
  26 (defpackage #:runlisp
  27   (:use #:common-lisp)
  28   (:export #:*raw-command-line* #:*command-line* #:exit)
  29   #+clisp (:import-from #:ext #:exit))
  30
  31 (defpackage #:mdw.sys-base
  32   (:use #:common-lisp #:runlisp)
  33   (:export #:exit #:hard-exit #:*program-name* #:*command-line*
  34            set-command-line-arguments)
  35   (:import-from #:runlisp #:*raw-command-line* #:*command-line* #:exit))
  36 (in-package #:mdw.sys-base)
  37
  38 (defvar *raw-command-line*)
  39 (defvar *command-line*)
  40 (defvar *program-name*)
  41
  42 (defun set-command-line-arguments ()
  43   (setf *raw-command-line*
  44         (or (when (member :cl-launched *features*)
  45               (cons (or (funcall (intern "GETENV" (find-package :cl-launch))
  46                                  "CL_LAUNCH_FILE")
  47                         "<unknown-script>")
  48                     (symbol-value (intern "*ARGUMENTS*"
  49                                           (find-package :cl-launch)))))
  50             #+cmu ext:*command-line-strings*
  51             #+sbcl sb-ext:*posix-argv*
  52             #+ecl (loop from i below (ext:argc) collect (ext:argv i))
  53             #+clisp (coerce (ext:argv) 'list)
  54             '("<unknown-lisp>" "--" "<unknown-script>")))
  55   (setf *command-line*
  56         (or (when (member :cl-launched *features*)
  57               *raw-command-line*)
  58             (cdr (member "--" *raw-command-line* :test #'string=))
  59             *raw-command-line*))
  60   (setf *program-name* (pathname-name (car *command-line*))))
  61 (set-command-line-arguments)
  62
  63 #-clisp
  64 (unless (fboundp 'exit)
  65   (defun exit (&optional (code 0))
  66     "Polite way to end a program."
  67     #+(or cmu ecl) (ext:quit code)
  68     #+sbcl (sb-ext:quit :unix-status code)
  69     #-(or cmu ecl sbcl)
  70     (progn
  71       (unless (zerop code)
  72         (format t "~&Exiting unsuccessfully with code ~D.~%" code))
  73       (abort))))
  74
  75 (defun hard-exit (&optional (code 0))
  76   "Stops the program immediately in its tracks.  Does nothing else.  Use
  77    after fork, for example, to avoid flushing buffers."
  78   (declare (type (unsigned-byte 32) code))
  79   #+cmu (unix::void-syscall ("_exit" c-call:int) code)
  80   #+sbcl (sb-ext:quit :unix-status code :recklessly-p t)
  81   #+(or clisp ecl) (ext:quit code))
  82
  83 ;;;----- That's all, folks --------------------------------------------------