dotfiles/dot_local/bin/executable_dnscheck

#!/run/current-system/profile/bin/guile \
--no-auto-compile -e (dnscheck) -s
!#

;;;; dnscheck --- https://github.com/NorfairKing/dnscheck wrapper
;;;; Copyright © 2021 Oleg Pykhalov <go.wigust@gmail.com>
;;;; Released under the GNU GPLv3 or any later version.

(define-module (dnscheck)
  #:use-module (json)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-37)
  #:export (main))

;;; Commentary:
;;;
;;; DESCRIPTION
;;;
;;; Code:

(define %options
  (let ((display-and-exit-proc (lambda (msg)
                                 (lambda (opt name arg loads)
                                   (display msg) (quit)))))
    (list (option '(#\v "version") #f #f
                  (display-and-exit-proc "dnscheck version 0.0.1\n"))
          (option '(#\h "help") #f #f
                  (display-and-exit-proc
                   "Usage: dnscheck ...\n")))))

(define %default-options
  '())

(define %home
  (and=> (getenv "HOME")
         (lambda (home)
           home)))

(define (main args)
  (define opts
    (args-fold (cdr (program-arguments))
               %options
               (lambda (opt name arg loads)
                 (error "Unrecognized option `~A'" name))
               (lambda (op loads)
                 (cons op loads))
               %default-options))
  (define json-filename
    (port-filename (mkstemp "/tmp/dnscheck-json-XXXXXX")))
  (with-output-to-file json-filename
    (lambda _
      (display (scm->json-string (load (last args))))))
  (system* (string-append %home "/.nix-profile/bin/dnscheck") json-filename)
  (delete-file json-filename))

;;; dnscheck ends here