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import/utils: spdx-string->license: Support '+' operator.

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Previously, '+' was supported only via special cases for deprecated
GNU identifiers like 'GPL-N+'.  This commit adds support
for other uses of '+', such as 'AFL-2.0+' and 'LPPL-1.0+'.

Strictly speaking, '+' is an operator, not part of the SPDX license
identifier, but it is useful to handle it here.

* guix/import/utils.scm (spdx-string->license): Support '+' operator.
* tests/import-utils.scm ("spdx-string->license"): Test it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Philip McGrath 2022-10-19 01:04:49 -04:00 committed by Ludovic Courtès
parent 07482dc051
commit fd5e642513
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GPG key ID: 090B11993D9AEBB5
2 changed files with 16 additions and 11 deletions
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23
guix/import/utils.scm
View file

@ -139,10 +139,11 @@ (define %spdx-license-identifiers
;; Please update guix/licenses.scm when modifying
;; this list to avoid mismatches.
;;
;; "GPL-N+" has been deprecated in favour of "GPL-N-or-later".
;; "GPL-N" has been deprecated in favour of "GPL-N-only"
;; or "GPL-N-or-later" as appropriate. Likewise for LGPL
;; and AGPL.
;; "GPL-N+" has been deprecated in favour of "GPL-N-or-later". "GPL-N" has
;; been deprecated in favour of "GPL-N-only" or "GPL-N-or-later" as
;; appropriate. Likewise for LGPL and AGPL. However, we list the
;; deprecated forms here (with and without the "+" operator) to get better
;; results from old license expressions.
'(("AGPL-1.0" . license:agpl1)
("AGPL-1.0-only" . license:agpl1)
("AGPL-3.0" . license:agpl3)
@ -255,10 +256,11 @@ (define %spdx-license-identifiers
("Zlib" . license:zlib)))
(define (spdx-string->license str)
"Convert STR, an SPDX license identifier, to a symbol like 'license:gpl3+
giving the prefixed name of a license object exported from (guix licenses).
Return #f if STR does not match any known SPDX license identifiers. Per the
SPDX specification, license identifiers are compared case-insensitively."
"Convert STR, an SPDX license identifier (possibly with a postfix +
operator), to a symbol like 'license:gpl3+ giving the prefixed name of a
license object exported from (guix licenses). Return #f if STR does not match
any known SPDX license identifiers. Per the SPDX specification, license
identifiers are compared case-insensitively."
;; https://spdx.github.io/spdx-spec/v2.3/SPDX-license-expressions/#d2-case-sensitivity
;; Operators AND, OR, and WITH are case-sensitive, but identifiers are
;; case-insensitive for matching, though the canonical case is used in URIs.
@ -266,7 +268,10 @@ (define (spdx-string->license str)
((_ . license)
license)
(#f
#f)))
(and (string-suffix? "+" str)
;; We try the form with the + to support deprecated identifiers for
;; GNU licenses (see above). Here, we handle other uses of +.
(spdx-string->license (string-drop-right str 1))))))
(define (license->symbol license)
"Convert LICENSE object to a prefixed symbol representing the variable the

4
tests/import-utils.scm
View file

@ -236,8 +236,8 @@ (define-module (test-import-utils)
(hidden-package? pkg))))
(test-equal "spdx-string->license"
'(license:gpl3+ license:agpl3)
'(license:gpl3+ license:agpl3 license:gpl2+)
(map spdx-string->license
'("GPL-3.0-oR-LaTeR" "AGPL-3.0")))
'("GPL-3.0-oR-LaTeR" "AGPL-3.0" "GPL-2.0+")))
(test-end "import-utils")