393 lines
15 KiB
Scheme
393 lines
15 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014 Cyril Roelandt <tipecaml@gmail.com>
|
||
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
|
||
;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
|
||
;;;
|
||
;;; 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 base32)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix records)
|
||
#:use-module (guix ui)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix gnu-maintenance)
|
||
#:use-module (gnu packages)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 regex)
|
||
#:use-module (ice-9 format)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-9)
|
||
#:use-module (srfi srfi-11)
|
||
#:use-module (srfi srfi-37)
|
||
#:export (guix-lint
|
||
check-description-style
|
||
check-inputs-should-be-native
|
||
check-patches
|
||
check-synopsis-style))
|
||
|
||
|
||
;;;
|
||
;;; Helpers
|
||
;;;
|
||
(define* (emit-warning package message #:optional field)
|
||
;; 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.
|
||
(let ((loc (or (package-field-location package field)
|
||
(package-location package))))
|
||
(format (guix-warning-port) "~a: ~a: ~a~%"
|
||
(location->string loc)
|
||
(package-full-name package)
|
||
message)))
|
||
|
||
|
||
;;;
|
||
;;; Checkers
|
||
;;;
|
||
(define-record-type* <lint-checker>
|
||
lint-checker make-lint-checker
|
||
lint-checker?
|
||
;; TODO: add a 'certainty' field that shows how confident we are in the
|
||
;; checker. Then allow users to only run checkers that have a certain
|
||
;; 'certainty' level.
|
||
(name lint-checker-name)
|
||
(description lint-checker-description)
|
||
(check lint-checker-check))
|
||
|
||
(define (list-checkers-and-exit)
|
||
;; Print information about all available checkers and exit.
|
||
(format #t (_ "Available checkers:~%"))
|
||
(for-each (lambda (checker)
|
||
(format #t "- ~a: ~a~%"
|
||
(lint-checker-name checker)
|
||
(_ (lint-checker-description checker))))
|
||
%checkers)
|
||
(exit 0))
|
||
|
||
(define (properly-starts-sentence? s)
|
||
(string-match "^[(\"'[:upper:][:digit:]]" s))
|
||
|
||
(define (starts-with-abbreviation? s)
|
||
"Return #t if S starts with what looks like an abbreviation or acronym."
|
||
(string-match "^[A-Z][A-Z0-9]+\\>" s))
|
||
|
||
(define (check-description-style package)
|
||
;; Emit a warning if stylistic issues are found in the description of PACKAGE.
|
||
(define (check-not-empty description)
|
||
(when (string-null? description)
|
||
(emit-warning package
|
||
(_ "description should not be empty")
|
||
'description)))
|
||
|
||
(define (check-proper-start description)
|
||
(unless (or (properly-starts-sentence? description)
|
||
(string-prefix-ci? (package-name package) description))
|
||
(emit-warning package
|
||
(_ "description should start with an upper-case letter or digit")
|
||
'description)))
|
||
|
||
(define (check-end-of-sentence-space description)
|
||
"Check that an end-of-sentence period is followed by two spaces."
|
||
(let ((infractions
|
||
(reverse (fold-matches
|
||
"\\. [A-Z]" description '()
|
||
(lambda (m r)
|
||
;; Filter out matches of common abbreviations.
|
||
(if (find (lambda (s)
|
||
(string-suffix-ci? s (match:prefix m)))
|
||
'("i.e" "e.g" "a.k.a" "resp"))
|
||
r (cons (match:start m) r)))))))
|
||
(unless (null? infractions)
|
||
(emit-warning package
|
||
(format #f (_ "sentences in description should be followed ~
|
||
by two spaces; possible infraction~p at ~{~a~^, ~}")
|
||
(length infractions)
|
||
infractions)
|
||
'description))))
|
||
|
||
(let ((description (package-description package)))
|
||
(when (string? description)
|
||
(check-not-empty description)
|
||
(check-proper-start description)
|
||
(check-end-of-sentence-space description))))
|
||
|
||
(define (check-inputs-should-be-native package)
|
||
;; Emit a warning if some inputs of PACKAGE are likely to belong to its
|
||
;; native inputs.
|
||
(let ((inputs (package-inputs package)))
|
||
(match inputs
|
||
(((labels packages . _) ...)
|
||
(when (member "pkg-config"
|
||
(map package-name (filter package? packages)))
|
||
(emit-warning package
|
||
(_ "pkg-config should probably be a native input")
|
||
'inputs))))))
|
||
|
||
(define (package-name-regexp package)
|
||
"Return a regexp that matches PACKAGE's name as a word at the beginning of a
|
||
line."
|
||
(make-regexp (string-append "^" (regexp-quote (package-name package))
|
||
"\\>")
|
||
regexp/icase))
|
||
|
||
(define (check-synopsis-style package)
|
||
;; Emit a warning if stylistic issues are found in the synopsis of PACKAGE.
|
||
(define (check-not-empty synopsis)
|
||
(when (string-null? synopsis)
|
||
(emit-warning package
|
||
(_ "synopsis should not be empty")
|
||
'synopsis)))
|
||
|
||
(define (check-final-period synopsis)
|
||
;; Synopsis should not end with a period, except for some special cases.
|
||
(when (and (string-suffix? "." synopsis)
|
||
(not (string-suffix? "etc." synopsis)))
|
||
(emit-warning package
|
||
(_ "no period allowed at the end of the synopsis")
|
||
'synopsis)))
|
||
|
||
(define check-start-article
|
||
;; Skip this check for GNU packages, as suggested by Karl Berry's reply to
|
||
;; <http://lists.gnu.org/archive/html/bug-womb/2014-11/msg00000.html>.
|
||
(if (false-if-exception (gnu-package? package))
|
||
(const #t)
|
||
(lambda (synopsis)
|
||
(when (or (string-prefix-ci? "A " synopsis)
|
||
(string-prefix-ci? "An " synopsis))
|
||
(emit-warning package
|
||
(_ "no article allowed at the beginning of \
|
||
the synopsis")
|
||
'synopsis)))))
|
||
|
||
(define (check-synopsis-length synopsis)
|
||
(when (>= (string-length synopsis) 80)
|
||
(emit-warning package
|
||
(_ "synopsis should be less than 80 characters long")
|
||
'synopsis)))
|
||
|
||
(define (check-proper-start synopsis)
|
||
(unless (properly-starts-sentence? synopsis)
|
||
(emit-warning package
|
||
(_ "synopsis should start with an upper-case letter or digit")
|
||
'synopsis)))
|
||
|
||
(define (check-start-with-package-name synopsis)
|
||
(when (and (regexp-exec (package-name-regexp package) synopsis)
|
||
(not (starts-with-abbreviation? synopsis)))
|
||
(emit-warning package
|
||
(_ "synopsis should not start with the package name")
|
||
'synopsis)))
|
||
|
||
(let ((synopsis (package-synopsis package)))
|
||
(when (string? synopsis)
|
||
(check-not-empty synopsis)
|
||
(check-proper-start synopsis)
|
||
(check-final-period synopsis)
|
||
(check-start-article synopsis)
|
||
(check-start-with-package-name synopsis)
|
||
(check-synopsis-length synopsis))))
|
||
|
||
(define (check-patches package)
|
||
;; Emit a warning if the patches requires by PACKAGE are badly named.
|
||
(let ((patches (and=> (package-source package) origin-patches))
|
||
(name (package-name package))
|
||
(full-name (package-full-name package)))
|
||
(when (and patches
|
||
(any (match-lambda
|
||
((? string? patch)
|
||
(let ((filename (basename patch)))
|
||
(not (or (eq? (string-contains filename name) 0)
|
||
(eq? (string-contains filename full-name)
|
||
0)))))
|
||
(_
|
||
;; This must be an <origin> or something like that.
|
||
#f))
|
||
patches))
|
||
(emit-warning package
|
||
(_ "file names of patches should start with \
|
||
the package name")
|
||
'patches))))
|
||
|
||
(define (escape-quotes str)
|
||
"Replace any quote character in STR by an escaped quote character."
|
||
(list->string
|
||
(string-fold-right (lambda (chr result)
|
||
(match chr
|
||
(#\" (cons* #\\ #\"result))
|
||
(_ (cons chr result))))
|
||
'()
|
||
str)))
|
||
|
||
(define official-gnu-packages*
|
||
(memoize
|
||
(lambda ()
|
||
"A memoizing version of 'official-gnu-packages' that returns the empty
|
||
list when something goes wrong, such as a networking issue."
|
||
(let ((gnus (false-if-exception (official-gnu-packages))))
|
||
(or gnus '())))))
|
||
|
||
(define (check-gnu-synopsis+description package)
|
||
"Make sure that, if PACKAGE is a GNU package, it uses the synopsis and
|
||
descriptions maintained upstream."
|
||
(match (find (lambda (descriptor)
|
||
(string=? (gnu-package-name descriptor)
|
||
(package-name package)))
|
||
(official-gnu-packages*))
|
||
(#f ;not a GNU package, so nothing to do
|
||
#t)
|
||
(descriptor ;a genuine GNU package
|
||
(let ((upstream (gnu-package-doc-summary descriptor))
|
||
(downstream (package-synopsis package))
|
||
(loc (or (package-field-location package 'synopsis)
|
||
(package-location package))))
|
||
(unless (and upstream (string=? upstream downstream))
|
||
(format (guix-warning-port)
|
||
(_ "~a: ~a: proposed synopsis: ~s~%")
|
||
(location->string loc) (package-full-name package)
|
||
upstream)))
|
||
|
||
(let ((upstream (gnu-package-doc-description descriptor))
|
||
(downstream (package-description package))
|
||
(loc (or (package-field-location package 'description)
|
||
(package-location package))))
|
||
(when (and upstream
|
||
(not (string=? (fill-paragraph upstream 100)
|
||
(fill-paragraph downstream 100))))
|
||
(format (guix-warning-port)
|
||
(_ "~a: ~a: proposed description:~% \"~a\"~%")
|
||
(location->string loc) (package-full-name package)
|
||
(fill-paragraph (escape-quotes upstream) 77 7)))))))
|
||
|
||
|
||
;;;
|
||
;;; List of checkers.
|
||
;;;
|
||
|
||
(define %checkers
|
||
(list
|
||
(lint-checker
|
||
(name 'description)
|
||
(description "Validate package descriptions")
|
||
(check check-description-style))
|
||
(lint-checker
|
||
(name 'gnu-description)
|
||
(description "Validate synopsis & description of GNU packages")
|
||
(check check-gnu-synopsis+description))
|
||
(lint-checker
|
||
(name 'inputs-should-be-native)
|
||
(description "Identify inputs that should be native inputs")
|
||
(check check-inputs-should-be-native))
|
||
(lint-checker
|
||
(name 'patch-filenames)
|
||
(description "Validate file names of patches")
|
||
(check check-patches))
|
||
(lint-checker
|
||
(name 'synopsis)
|
||
(description "Validate package synopses")
|
||
(check check-synopsis-style))))
|
||
|
||
(define (run-checkers package checkers)
|
||
;; Run the given CHECKERS on PACKAGE.
|
||
(for-each (lambda (checker)
|
||
((lint-checker-check checker) package))
|
||
checkers))
|
||
|
||
|
||
;;;
|
||
;;; Command-line options.
|
||
;;;
|
||
|
||
(define %default-options
|
||
;; Alist of default option values.
|
||
'())
|
||
|
||
(define (show-help)
|
||
(display (_ "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 (_ "
|
||
-c, --checkers=CHECKER1,CHECKER2...
|
||
only run the specificed checkers"))
|
||
(display (_ "
|
||
-h, --help display this help and exit"))
|
||
(display (_ "
|
||
-l, --list-checkers display the list of available lint checkers"))
|
||
(display (_ "
|
||
-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 arg-handler)
|
||
(let ((names (map string->symbol (string-split arg #\,))))
|
||
(for-each (lambda (c)
|
||
(unless (memq c
|
||
(map lint-checker-name
|
||
%checkers))
|
||
(leave (_ "~a: invalid checker~%") c)))
|
||
names)
|
||
(values (alist-cons 'checkers
|
||
(filter (lambda (checker)
|
||
(member (lint-checker-name checker)
|
||
names))
|
||
%checkers)
|
||
result)
|
||
#f))))
|
||
(option '(#\h "help") #f #f
|
||
(lambda args
|
||
(show-help)
|
||
(exit 0)))
|
||
(option '(#\l "list-checkers") #f #f
|
||
(lambda args
|
||
(list-checkers-and-exit)))
|
||
(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.
|
||
(args-fold* args %options
|
||
(lambda (opt name arg result arg-handler)
|
||
(leave (_ "~A: unrecognized option~%") name))
|
||
(lambda (arg result arg-handler)
|
||
(alist-cons 'argument arg result))
|
||
%default-options #f))
|
||
|
||
(let* ((opts (parse-options))
|
||
(args (filter-map (match-lambda
|
||
(('argument . value)
|
||
value)
|
||
(_ #f))
|
||
(reverse opts)))
|
||
(checkers (or (assoc-ref opts 'checkers) %checkers)))
|
||
(if (null? args)
|
||
(fold-packages (lambda (p r) (run-checkers p checkers)) '())
|
||
(for-each (lambda (spec)
|
||
(run-checkers (specification->package spec) checkers))
|
||
args))))
|