1 ;;; Click --- Command Line Interface Creation Kit for GNU Guile
2 ;;; Copyright © 2021 Javier Sancho <jsf@jsancho.org>
4 ;;; This file is part of Click.
6 ;;; Click is free software; you can redistribute it and/or modify it
7 ;;; under the terms of the GNU General Public License as published by
8 ;;; the Free Software Foundation; either version 3 of the License, or
9 ;;; (at your option) any later version.
11 ;;; Click is distributed in the hope that it will be useful, but
12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 ;;; General Public License for more details.
16 ;;; You should have received a copy of the GNU General Public License
17 ;;; along with Click. If not, see <http://www.gnu.org/licenses/>.
20 (define-module (click)
21 #:use-module (ice-9 getopt-long)
22 #:use-module (click constant)
23 #:use-module (click display)
24 #:use-module (click util)
27 (define (get-options-value options option-spec)
28 (cond ((null? option-spec)
31 (let* ((option (car option-spec))
32 (option-name (car option))
33 (default (option-default-value option)))
34 (cons (cons option-name (option-ref options option-name default))
35 (get-options-value options (cdr option-spec)))))))
37 (define (command option-spec procedure)
39 (with-fluids ((%program-name (car args)))
40 (let* ((click-option-spec (append option-spec (list HELP_OPTION)))
41 (options (getopt-long args
42 (getopt-long-option-spec click-option-spec))))
43 (if (option-ref options 'help #f)
44 (display-help procedure click-option-spec)
45 (apply procedure (map cdr (get-options-value options option-spec))))))))