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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Cyril Roelandt <tipecaml@gmail.com>
;;; Copyright © 2014, 2015 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015, 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2016 Danny Milosavljevic <dannym+a@scratchpost.org>
;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2017 Alex Kost <alezost@gmail.com>
;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2017, 2018 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2018, 2019 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2019 Simon Tournier <zimon.toutoune@gmail.com>
;;;
;;; 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 lint)
#:use-module (guix packages)
#:use-module (guix lint)
#:use-module (guix ui)
#:use-module (guix scripts)
#:use-module (guix scripts build)
#:use-module (gnu packages)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-37)
#:export (guix-lint
run-checkers))
(define (emit-warnings warnings)
;; Emit a warning about PACKAGE, printing the location of FIELD if it is
;; given, the location of PACKAGE otherwise, the full name of PACKAGE and the
;; provided MESSAGE.
(for-each
(lambda (lint-warning)
(let ((package (lint-warning-package lint-warning))
(loc (lint-warning-location lint-warning)))
(info loc (G_ "~a@~a: ~a~%")
(package-name package) (package-version package)
(lint-warning-message lint-warning))))
warnings))
(define (run-checkers package checkers)
"Run the given CHECKERS on PACKAGE."
(let ((tty? (isatty? (current-error-port))))
(for-each (lambda (checker)
(when tty?
(format (current-error-port) "checking ~a@~a [~a]...\x1b[K\r"
(package-name package) (package-version package)
(lint-checker-name checker))
(force-output (current-error-port)))
(emit-warnings
((lint-checker-check checker) package)))
checkers)
(when tty?
(format (current-error-port) "\x1b[K")
(force-output (current-error-port)))))
(define (list-checkers-and-exit checkers)
;; Print information about all available checkers and exit.
(format #t (G_ "Available checkers:~%"))
(for-each (lambda (checker)
(format #t "- ~a: ~a~%"
(lint-checker-name checker)
(G_ (lint-checker-description checker))))
checkers)
(exit 0))
;;;
;;; Command-line options.
;;;
(define %default-options
;; Alist of default option values.
'())
(define (show-help)
(display (G_ "Usage: guix lint [OPTION]... [PACKAGE]...
Run a set of checkers on the specified package; if none is specified,
run the checkers on all packages.\n"))
(display (G_ "
-c, --checkers=CHECKER1,CHECKER2...
only run the specified checkers"))
(display (G_ "
-L, --load-path=DIR prepend DIR to the package module search path"))
(newline)
(display (G_ "
-h, --help display this help and exit"))
(display (G_ "
-l, --list-checkers display the list of available lint checkers"))
(display (G_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
;; TODO: add some options:
;; * --certainty=[low,medium,high]: only run checkers that have at least this
;; 'certainty'.
(list (option '(#\c "checkers") #t #f
(lambda (opt name arg result)
(let ((names (map string->symbol (string-split arg #\,)))
(checker-names (map lint-checker-name %all-checkers)))
(for-each (lambda (c)
(unless (memq c checker-names)
(leave (G_ "~a: invalid checker~%") c)))
names)
(alist-cons 'checkers
(filter (lambda (checker)
(member (lint-checker-name checker)
names))
%all-checkers)
result))))
(option '(#\n "no-network") #f #f
(lambda (opt name arg result)
(alist-cons 'checkers
%local-checkers
(alist-delete 'checkers
result))))
(find (lambda (option)
(member "load-path" (option-names option)))
%standard-build-options)
(option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\l "list-checkers") #f #f
(lambda (opt name arg result)
(alist-cons 'list?
#t
result)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix lint")))))
;;;
;;; Entry Point
;;;
(define (guix-lint . 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)))
(checkers (or (assoc-ref opts 'checkers) %all-checkers)))
(cond
((assoc-ref opts 'list?)
(list-checkers-and-exit checkers))
((null? args)
(fold-packages (lambda (p r) (run-checkers p checkers)) '()))
(else
(for-each (lambda (spec)
(run-checkers (specification->package spec) checkers))
args)))))
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