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;;; Haunt --- Static site generator for GNU Guile
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;;
;;; This file is part of Haunt.
;;;
;;; Haunt 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.
;;;
;;; Haunt is distributed in the hope that it will be useful, but
;;; WITnnnHOUT 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 Haunt. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Haunt user interface.
;;
;;; Code:
(define-module (haunt ui)
#:use-module (ice-9 format)
#:use-module (ice-9 ftw)
#:use-module (ice-9 match)
#:use-module (srfi srfi-26)
#:use-module (haunt config)
#:export (program-name
haunt-error
show-version-and-exit
option?
haunt-main))
(define commands
'(serve))
(define program-name (make-parameter 'haunt))
(define (haunt-error str . args)
(format (current-error-port) "~a: " (program-name))
(apply format (current-error-port) str args)
(newline))
(define (show-haunt-help)
(format #t "Usage: haunt COMMAND ARGS...
Run COMMAND with ARGS.~%~%")
(format #t "COMMAND must be one of the sub-commands listed below:~%~%")
(format #t "~{ ~a~%~}" (sort commands string<?)))
(define (show-haunt-usage)
(format #t "Try `haunt --help' for more information.~%")
(exit 1))
(define (show-version-and-exit)
(let ((name (if (eq? (program-name) 'haunt)
"haunt"
(format #f "haunt ~a" (program-name)))))
(format #t "~a ~a
Copyright (C) 2015 the Haunt authors
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.~%"
name %haunt-version)))
(define (option? str)
(string-prefix? "-" str))
(define (run-haunt-command command . args)
(let* ((module
(catch 'misc-error
(lambda ()
(resolve-interface `(haunt ui ,command)))
(lambda -
(haunt-error "~a: command not found" command)
(show-haunt-usage))))
(command-main (module-ref module (symbol-append 'haunt- command))))
(parameterize ((program-name command))
(apply command-main args))))
(define* (haunt-main arg0 . args)
(match args
(()
(show-haunt-usage))
((or ("-h") ("--help"))
(show-haunt-help))
(("--version")
(show-version-and-exit))
(((? option? opt) _ ...)
(format (current-error-port)
"haunt: unrecognized option '~a'~%"
opt)
(show-haunt-usage))
((command args ...)
(apply run-haunt-command (string->symbol command) args))))
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