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 (defpackage #:mdw.sys-base
  31   (:use #:common-lisp #:runlisp)
  32   (:export #:exit #:hard-exit #:*program-name* #:*command-line*)
  33   (:import-from #:runlisp #:*raw-command-line* #:*command-line* #:exit))
  34 (in-package #:mdw.sys-base)
  35
  36 (defvar *raw-command-line*
  37   (or #+cmu ext:*command-line-strings*
  38       #+sbcl sb-ext:*posix-argv*
  39       #+ecl (loop from i below (ext:argc) collect (ext:argv i))
  40       #+clisp (coerce (ext:argv) 'list)
  41       '("<unknown-lisp>" "--" "<unknown-script>")))
  42
  43 (defvar *command-line*
  44   (or (cdr (member "--" *raw-command-line* :test #'string=))
  45       *raw-command-line*))
  46
  47 #-clisp
  48 (unless (fboundp 'exit)
  49   (defun exit (&optional (code 0))
  50     "Polite way to end a program."
  51     #+(or cmu ecl) (ext:quit code)
  52     #+sbcl (sb-ext:quit :unix-status code)
  53     #-(or cmu ecl sbcl)
  54     (progn
  55       (unless (zerop code)
  56         (format t "~&Exiting unsuccessfully with code ~D.~%" code))
  57       (abort))))
  58
  59 (defun hard-exit (&optional (code 0))
  60   "Stops the program immediately in its tracks.  Does nothing else.  Use
  61    after fork, for example, to avoid flushing buffers."
  62   (declare (type (unsigned-byte 32) code))
  63   #+cmu (unix::void-syscall ("_exit" c-call:int) code)
  64   #+sbcl (sb-ext:quit :unix-status code :recklessly-p t)
  65   #+(or clisp ecl) (ext:quit code))
  66
  67 (defvar *program-name*
  68   (pathname-name (car *command-line*))
  69   "A plausible guess at the program's name, stripped of strange extensions.")
  70
  71 ;;;----- That's all, folks --------------------------------------------------