Using proposed new Guile command-line-processor.

This is a pre-emptive delta which will make use of new facilities
in a future Guile for command-line option processing---a fuller
description will appear with later patches.

* src/{cron,crontab,mcron}.in: use new facility
* src/mcron/scripts/{cron,crontab,mcron}.scm: remove old option-scanning code

1 files changed, 53 insertions, 3 deletions

diff --git a/src/mcron.in b/src/mcron.in
index 07023f9..63b4814 100644
--- a/src/mcron.in
+++ b/src/mcron.in
@@ -2,10 +2,60 @@
 -*- scheme -*-
 !#
 
+;;;; mcron -- run jobs at scheduled times
+;;; Copyright © 2003, 2012, 2020  Dale Mellor <mcron-lsfnyl@rdmp.org>
+;;; Copyright © 2015, 2016, 2018  Mathieu Lirzin <mthl@gnu.org>
+;;;
+;;; This file is part of GNU Mcron.
+;;;
+;;; GNU Mcron 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.
+;;;
+;;; GNU Mcron 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.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Mcron.  If not, see <http://www.gnu.org/licenses/>.
+
+
 (unless (getenv "MCRON_UNINSTALLED")
   (set! %load-path (cons "%modsrcdir%" %load-path))
   (set! %load-compiled-path (cons "%modbuilddir%" %load-compiled-path)))
 
-(use-modules (mcron scripts mcron)
-             (mcron utils))
-(catch-mcron-error (main))
+(use-modules  (mcron scripts mcron)
+              (mcron utils)
+              (ice-9 command-line-processor))
+
+(process-command-line  (command-line)
+       application   "mcron"
+       version       "%VERSION%"
+       usage         "[OPTIONS ...] [FILES ...]"
+       help-preamble
+  "Run unattended jobs according to instructions in the FILES... "
+  "(`-' for standard input), or use all the files in ~/.config/cron "
+  "(or the deprecated ~/.cron) with .guile or .vixie extensions.\n"
+  "Note that --daemon and --schedule are mutually exclusive."
+       option  (--daemon  -d  "run as a daemon process")
+       option  (--schedule=8  -s  string->number
+                      "display the next N (or 8) jobs that will be run,"
+                      "and then exit")
+       option  (--stdin=guile  short-i  (λ (in) (or (string=? in "guile")
+                                                    (string=? in "vixie")))
+                      "format of data passed as standard input or file "
+                      "arguments, 'guile' or 'vixie' (default guile)")
+       option  (--log  -l  "write log messages to standard output")
+       option  (--log-format  "(ice-9 format) format string for log messages")
+       option  (--date-format "(srfi srfi-19) date format for log messages")
+       help-postamble
+  "Mandatory or optional arguments to long options are also mandatory or "
+  "optional for any corresponding short options."
+       bug-address "%PACKAGE_BUGREPORT%"
+       copyright   "2003 - 2022  Free Software Foundation, Inc."
+       license     GPLv3)
+
+(catch-mcron-error (main --daemon --schedule --stdin --log --log-format
+                         --date-format  --!))