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;; -*- coding: utf-8; -*-
;; gitto -- Keep track of your git repositories
;; Copyright (C) 2012 Tom Willemse <tom at ryuslash dot org>
;; This file is part of gitto.
;; gitto 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.
;; gitto 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 gitto. If not, see <http://www.gnu.org/licenses/>.
(define-module (gitto commands help)
#:use-module (gitto command)
#:use-module (ice-9 format))
(define (print-command-help command)
"Print the help message for COMMAND."
(if (command? command)
(format #t "~a~%" (command-documentation command))
(format #t "Unknown command: ~a~%" command)))
(define (print-short-command-help command)
"Print COMMAND's name and its short description."
(format #t " ~a~15t~a~%" (car command) (assq-ref command #:usage)))
(define (print-general-help)
"Print the general help message for gitto."
(display "gitto [command [arguments ...]]")
(newline)
(for-each-command print-short-command-help))
(define-command (help #:optional command)
"Display this help."
"Usage: gitto help [COMMAND]
Display a help message. If COMMAND is not specified, print some
information about gitto, otherwise print some information about
COMMAND."
(if command
(print-command-help command)
(print-general-help)))
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