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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Jelle Licht <jlicht@fsfe.org>
;;; Copyright © 2016 David Craven <david@craven.ch>
;;;
;;; 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 import utils)
#:use-module (guix base32)
#:use-module ((guix build download) #:prefix build:)
#:use-module (guix hash)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix utils)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:export (factorize-uri
hash-table->alist
flatten
assoc-ref*
url-fetch
guix-hash-url
spdx-string->license
license->symbol
snake-case
beautify-description))
(define (factorize-uri uri version)
"Factorize URI, a package tarball URI as a string, such that any occurrences
of the string VERSION is replaced by the symbol 'version."
(let ((version-rx (make-regexp (regexp-quote version))))
(match (regexp-exec version-rx uri)
(#f
uri)
(_
(let ((indices (fold-matches version-rx uri
'((0))
(lambda (m result)
(match result
(((start) rest ...)
`((,(match:end m))
(,start . ,(match:start m))
,@rest)))))))
(fold (lambda (index result)
(match index
((start)
(cons (substring uri start)
result))
((start . end)
(cons* (substring uri start end)
'version
result))))
'()
indices))))))
(define (hash-table->alist table)
"Return an alist represenation of TABLE."
(map (match-lambda
((key . (lst ...))
(cons key
(map (lambda (x)
(if (hash-table? x)
(hash-table->alist x)
x))
lst)))
((key . (? hash-table? table))
(cons key (hash-table->alist table)))
(pair pair))
(hash-map->list cons table)))
(define (flatten lst)
"Return a list that recursively concatenates all sub-lists of LST."
(fold-right
(match-lambda*
(((sub-list ...) memo)
(append (flatten sub-list) memo))
((elem memo)
(cons elem memo)))
'() lst))
(define (assoc-ref* alist key . rest)
"Return the value for KEY from ALIST. For each additional key specified,
recursively apply the procedure to the sub-list."
(if (null? rest)
(assoc-ref alist key)
(apply assoc-ref* (assoc-ref alist key) rest)))
(define (url-fetch url file-name)
"Save the contents of URL to FILE-NAME. Return #f on failure."
(parameterize ((current-output-port (current-error-port)))
(build:url-fetch url file-name)))
(define (guix-hash-url filename)
"Return the hash of FILENAME in nix-base32 format."
(bytevector->nix-base32-string (file-sha256 filename)))
(define (spdx-string->license str)
"Convert STR, a SPDX formatted license identifier, to a license object.
Return #f if STR does not match any known identifiers."
;; https://spdx.org/licenses/
;; The psfl, gfl1.0, nmap, repoze
;; licenses doesn't have SPDX identifiers
(match str
("AGPL-1.0" 'license:agpl-1.0)
("AGPL-3.0" 'license:agpl-3.0)
("Apache-1.1" 'license:asl1.1)
("Apache-2.0" 'license:asl2.0)
("BSL-1.0" 'license:boost1.0)
("BSD-2-Clause-FreeBSD" 'license:bsd-2)
("BSD-3-Clause" 'license:bsd-3)
("BSD-4-Clause" 'license:bsd-4)
("CC0-1.0" 'license:cc0)
("CC-BY-2.0" 'license:cc-by2.0)
("CC-BY-3.0" 'license:cc-by3.0)
("CC-BY-SA-2.0" 'license:cc-by-sa2.0)
("CC-BY-SA-3.0" 'license:cc-by-sa3.0)
("CC-BY-SA-4.0" 'license:cc-by-sa4.0)
("CDDL-1.0" 'license:cddl1.0)
("CECILL-C" 'license:cecill-c)
("Artistic-2.0" 'license:artistic2.0)
("ClArtistic" 'license:clarified-artistic)
("CPL-1.0" 'license:cpl1.0)
("EPL-1.0" 'license:epl1.0)
("MIT" 'license:expat)
("FTL" 'license:freetype)
("GFDL-1.1" 'license:fdl1.1+)
("GFDL-1.2" 'license:fdl1.2+)
("GFDL-1.3" 'license:fdl1.3+)
("Giftware" 'license:giftware)
("GPL-1.0" 'license:gpl1)
("GPL-1.0+" 'license:gpl1+)
("GPL-2.0" 'license:gpl2)
("GPL-2.0+" 'license:gpl2+)
("GPL-3.0" 'license:gpl3)
("GPL-3.0+" 'license:gpl3+)
("ISC" 'license:isc)
("IJG" 'license:ijg)
("Imlib2" 'license:imlib2)
("IPA" 'license:ipa)
("IPL-1.0" 'license:ibmpl1.0)
("LGPL-2.0" 'license:lgpl2.0)
("LGPL-2.0+" 'license:lgpl2.0+)
("LGPL-2.1" 'license:lgpl2.1)
("LGPL-2.1+" 'license:lgpl2.1+)
("LGPL-3.0" 'license:lgpl3.0)
("LGPL-3.0+" 'license:lgpl3.0+)
("MPL-1.0" 'license:mpl1.0)
("MPL-1.1" 'license:mpl1.1)
("MPL-2.0" 'license:mpl2.0)
("MS-PL" 'license:ms-pl)
("NCSA" 'license:ncsa)
("OpenSSL" 'license:openssl)
("OLDAP-2.8" 'license:openldap2.8)
("CUA-OPL-1.0" 'license:opl1.0)
("QPL-1.0" 'license:qpl)
("Ruby" 'license:ruby)
("SGI-B-2.0" 'license:sgifreeb2.0)
("OFL-1.1" 'license:silofl1.1)
("Sleepycat" 'license:sleepycat)
("TCL" 'license:tcl/tk)
("Unlicense" 'license:unlicense)
("Vim" 'license:vim)
("X11" 'license:x11)
("ZPL-2.1" 'license:zpl2.1)
("Zlib" 'license:zlib)
(_ #f)))
(define (license->symbol license)
"Convert license to a symbol representing the variable the object is bound
to in the (guix licenses) module, or #f if there is no such known license."
(define licenses
(module-map (lambda (sym var) `(,(variable-ref var) . ,sym))
(resolve-interface '(guix licenses) #:prefix 'license:)))
(assoc-ref licenses license))
(define (snake-case str)
"Return a downcased version of the string STR where underscores are replaced
with dashes."
(string-join (string-split (string-downcase str) #\_) "-"))
(define (beautify-description description)
"Improve the package DESCRIPTION by turning a beginning sentence fragment
into a proper sentence and by using two spaces between sentences."
(let ((cleaned (if (string-prefix? "A " description)
(string-append "This package provides a"
(substring description 1))
description)))
;; Use double spacing between sentences
(regexp-substitute/global #f "\\. \\b"
cleaned 'pre ". " 'post)))
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