83 lines
2.4 KiB
Scheme
83 lines
2.4 KiB
Scheme
;;; Haunt --- Static site generator for GNU Guile
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;;; Copyright © 2015 David Thompson <davet@gnu.org>
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;;;
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;;; This file is part of Haunt.
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;;;
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;;; Haunt is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or
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;;; (at your option) any later version.
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;;;
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;;; Haunt is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with Haunt. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; Haunt user interface.
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;;
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;;; Code:
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(define-module (haunt ui)
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#:use-module (ice-9 format)
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#:use-module (ice-9 ftw)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-26)
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#:export (program-name
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haunt-error
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option?
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haunt-main))
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(define commands
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'(serve))
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(define program-name (make-parameter "haunt"))
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(define (haunt-error str . args)
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(format (current-error-port) "~a: " (program-name))
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(apply format (current-error-port) str args)
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(newline))
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(define (show-haunt-help)
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(format #t "Usage: haunt COMMAND ARGS...
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Run COMMAND with ARGS.~%~%")
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(format #t "COMMAND must be one of the sub-commands listed below:~%~%")
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(format #t "~{ ~a~%~}" (sort commands string<?)))
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(define (show-haunt-usage)
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(format #t "Try `haunt --help' for more information.~%")
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(exit 1))
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(define (option? str)
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(string-prefix? "-" str))
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(define (run-haunt-command command . args)
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(let* ((module
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(catch 'misc-error
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(lambda ()
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(resolve-interface `(haunt ui ,command)))
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(lambda -
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(haunt-error "~a: command not found" command)
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(show-haunt-usage))))
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(command-main (module-ref module (symbol-append 'haunt- command))))
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(parameterize ((program-name command))
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(apply command-main args))))
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(define* (haunt-main arg0 . args)
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(match args
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(()
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(show-haunt-usage))
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((or ("-h") ("--help"))
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(show-haunt-help))
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(((? option? opt) _ ...)
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(format (current-error-port)
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"haunt: unrecognized option '~a'~%"
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opt)
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(show-haunt-usage))
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((command args ...)
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(apply run-haunt-command (string->symbol command) args))))
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