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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012-2014, 2020-2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 David Thompson <davet@gnu.org>
;;; Copyright © 2018 Kyle Meyer <kyle@kyleam.com>
;;; Copyright © 2019, 2022 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2021 Simon Tournier <zimon.toutoune@gmail.com>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2022 Philip McGrath <philip@philipmcgrath.com>
;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
;;;
;;; 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)
#:use-module (guix import utils)
#:use-module (guix diagnostics)
#:use-module (guix i18n)
#:use-module (guix ui)
#:use-module (guix scripts)
#:use-module (guix read-print)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:export (%standard-import-options
guix-import))
;;;
;;; Command line options.
;;;
(define %standard-import-options
(list
;; Hidden option for importer-specific file preprocessing.
(option '("file-to-insert") #f #t
(lambda (opt name arg result)
(if (file-exists? arg)
(alist-cons 'file-to-insert arg result)
(leave (G_ "file '~a' does not exist~%") arg))))))
;;;
;;; Entry point.
;;;
;; The list of all known importers. These are printed in order by SHOW-HELP, so
;; please keep this list alphabetically sorted!
(define importers '("composer" "cpan" "cran" "crate" "egg" "elm" "elpa"
"gem" "gnu" "go" "hackage" "hexpm" "json" "luanti"
"minetest" ; deprecated
"npm-binary" "nuget" "opam" "pypi" "stackage" "texlive"))
(define (resolve-importer name)
(let ((module (resolve-interface
`(guix scripts import ,(string->symbol name))))
(proc (string->symbol (string-append "guix-import-" name))))
(module-ref module proc)))
(define (show-help)
(display (G_ "Usage: guix import IMPORTER ARGS ...
Run IMPORTER with ARGS.\n"))
(newline)
(display (G_ "IMPORTER must be one of the importers listed below:\n"))
(newline)
(format #t "~{ ~a~%~}" importers)
(display (G_ "
-h, --help display this help and exit"))
(display (G_ "
-i, --insert=FILE insert packages into FILE alphabetically"))
(display (G_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define (import-as-definitions importer args proc)
"Wrap package expressions from IMPORTER with 'define-public and invoke
PROC callback."
(if (member importer importers)
(match (apply (resolve-importer importer) args)
((and expr (or ('package _ ...)
('let _ ...)))
(proc (package->definition expr)))
((and expr (or ('define-public _ ...)
('define _ ...)))
(proc expr))
((expressions ...)
(for-each (lambda (expr)
(match expr
((and expr (or ('package _ ...)
('let _ ...)))
(proc (package->definition expr)))
((and expr (or ('define-public _ ...)
('define _ ...)))
(proc expr))))
expressions))
(x
(leave (G_ "'~a' import failed~%") importer)))
(let ((hint (string-closest importer importers #:threshold 3)))
(report-error (G_ "~a: invalid importer~%") importer)
(when hint
(display-hint (G_ "Did you mean @code{~a}?~%") hint))
(exit 1))))
(define-command (guix-import . args)
(category packaging)
(synopsis "import a package definition from an external repository")
(define (process-args args)
(match args
;; Workaround to accpet ‘--insert=FILE’, for the consistency of
;; command-line interface.
((arg . rest)
(if (string-prefix? "--insert=" arg)
(append (string-split arg #\=)
rest)
args))
(_ args)))
(match (process-args args)
(()
(format (current-error-port)
(G_ "guix import: missing importer name~%")))
((or ("-h" _ ...) ("--help" _ ...))
(leave-on-EPIPE (show-help))
(exit 0))
((or ("-V" _ ...) ("--version" _ ...))
(show-version-and-exit "guix import"))
((or ("-i" file importer args ...)
("--insert" file importer args ...))
(let* ((define-prefixes
`(,@(if (member importer '("crate"))
'(define)
'())
define-public))
(define-prefix? (cut member <> define-prefixes))
(find-and-insert
(lambda (expr)
(match expr
(((? define-prefix? define-prefix) term _ ...)
;; Skip existing definition.
(unless (find-definition-location
file term #:define-prefix define-prefix)
(let ((source-properties
(find-definition-insertion-location
file term #:define-prefix define-prefix)))
(if source-properties
(insert-expression source-properties expr)
(let ((port (open-file file "a")))
(pretty-print-with-comments port expr)
(newline port)
(newline port)
(close-port port))))))))))
(import-as-definitions importer
(cons (string-append "--file-to-insert=" file)
args)
find-and-insert)))
((importer args ...)
(let ((print (lambda (expr)
(leave-on-EPIPE
(pretty-print-with-comments
(current-output-port) expr)
;; Two newlines: one after the closing paren, and
;; one to leave a blank line.
(newline) (newline)))))
(import-as-definitions importer args print)))))
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