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;; disfluid, implementation of the Solid specification
;; Copyright (C) 2020, 2021 Vivien Kraus
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.
;; This program 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 Affero General Public License for more details.
;; You should have received a copy of the GNU Affero General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
(define-module (webid-oidc web-i18n)
#:use-module (ice-9 i18n)
#:use-module (ice-9 match)
#:use-module (ice-9 receive)
#:use-module (ice-9 threads)
#:use-module (srfi srfi-26)
#:use-module (web request)
#:declarative? #t
#:export
(
web-locale
(web-gettext . W_)
(sysadmin-gettext . G_)
))
(define locale-mutex
(make-mutex))
(define sort-qlist
(cute sort <>
(match-lambda*
(((px . _) (py . _))
(>= px py)))))
(define get-preferred-language
(match-lambda
((? request?
(= request-accept-language
(= sort-qlist
(((_ . language) _ ...)))))
(get-preferred-language language))
((? string?
(= (cute string-split <> #\-)
((? string? lang)
(? string? region))))
(format #f "~a_~a.UTF-8" lang region))
(else "")))
(define web-locale
(make-parameter
"en-US"
get-preferred-language))
(define (disambiguate str out)
(if (string=? out str)
;; No translation, disambiguate
(car (reverse (string-split str #\|)))
;; Translation done, nothing to do
out))
(define (web-gettext str)
(let ((out
(with-mutex locale-mutex
(let ((previous-locale (setlocale LC_ALL)))
(dynamic-wind
(lambda ()
(with-exception-handler
(lambda (exn)
(setlocale LC_ALL "C"))
(lambda ()
(setlocale LC_ALL (web-locale)))
#:unwind? #t))
(lambda ()
(gettext str))
(lambda ()
(setlocale LC_ALL previous-locale)))))))
(disambiguate str out)))
(define (sysadmin-gettext str)
(let ((out
(with-mutex locale-mutex
(gettext str))))
(disambiguate str out)))
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