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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2015, 2017, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2020 Martin Becze <mjbecze@riseup.net>
;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix scripts import cran)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix scripts)
#:use-module (guix import cran)
#:use-module (guix import utils)
#:use-module (guix scripts import)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-37)
#:use-module (srfi srfi-71)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:export (guix-import-cran))
;;;
;;; Command-line options.
;;;
(define %default-options
'())
(define (show-help)
(display (G_ "Usage: guix import cran PACKAGE-NAME
Import and convert the CRAN package for PACKAGE-NAME.\n"))
(display (G_ "
-a, --archive=ARCHIVE specify the archive repository"))
(display (G_ "
-h, --help display this help and exit"))
(display (G_ "
-r, --recursive import packages recursively"))
(display (G_ "
-s, --style=STYLE choose output style, either specification or variable"))
(display (G_ "
-p, --license-prefix=PREFIX
add custom prefix to licenses"))
(display (G_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(cons* (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix import cran")))
(option '(#\a "archive") #t #f
(lambda (opt name arg result)
(alist-cons 'repo (string->symbol arg)
(alist-delete 'repo result))))
(option '(#\s "style") #t #f
(lambda (opt name arg result)
(alist-cons 'style (string->symbol arg)
(alist-delete 'style result))))
(option '(#\p "license-prefix") #t #f
(lambda (opt name arg result)
(alist-cons 'license-prefix arg
(alist-delete 'license-prefix result))))
(option '(#\r "recursive") #f #f
(lambda (opt name arg result)
(alist-cons 'recursive #t result)))
%standard-import-options))
;;;
;;; Entry point.
;;;
(define (guix-import-cran . args)
(define (parse-options)
;; Return the alist of option values.
(parse-command-line args %options (list %default-options)
#:build-options? #f))
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts)))
(prefix (assoc-ref opts 'license-prefix))
(prefix-proc (if (string? prefix)
(lambda (symbol)
(string->symbol
(string-append prefix (symbol->string symbol))))
identity)))
(parameterize ((%input-style (assoc-ref opts 'style)))
(match args
((spec)
(let ((name version (package-name->name+version spec)))
(if (assoc-ref opts 'recursive)
;; Recursive import
(with-error-handling
(map package->definition
(filter identity
(cran-recursive-import name
#:version version
#:repo (or (assoc-ref opts 'repo) 'cran)
#:license-prefix prefix-proc))))
;; Single import
(let ((sexp (cran->guix-package name
#:version version
#:repo (or (assoc-ref opts 'repo) 'cran)
#:license-prefix prefix-proc)))
(unless sexp
(leave (G_ "failed to download description for package '~a'~%")
name))
sexp))))
(()
(leave (G_ "too few arguments~%")))
((many ...)
(leave (G_ "too many arguments~%")))))))
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