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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014-2017, 2019-2021, 2023-2024 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2023 Janneke Nieuwenhuizen <jannek@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 (gnu system locale)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix modules)
#:use-module (guix records)
#:use-module (guix packages)
#:use-module (guix utils)
#:use-module (gnu packages base)
#:use-module (gnu packages compression)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (locale-definition
locale-definition?
locale-definition-name
locale-definition-source
locale-definition-charset
locale-name->definition
locale-directory
%default-locale-libcs
%default-locale-definitions
glibc-supported-locales))
;;; Commentary:
;;;
;;; Locale definitions, and compilation thereof.
;;;
;;; Code:
(define-record-type* <locale-definition> locale-definition
make-locale-definition
locale-definition?
(name locale-definition-name) ;string--e.g., "fr_FR.utf8"
(source locale-definition-source) ;string--e.g., "fr_FR"
(charset locale-definition-charset ;string--e.g., "UTF-8"
(default "UTF-8")))
(define %not-dot
(char-set-complement (char-set #\.)))
(define (denormalize-codeset codeset)
"Attempt to guess the \"real\" name of CODESET, a normalized codeset as
defined in (info \"(libc) Using gettextized software\")."
(cond ((string=? codeset "utf8")
"UTF-8")
((string-prefix? "iso8859" codeset)
(string-append "ISO-8859-" (string-drop codeset 7)))
((string=? codeset "eucjp")
"EUC-JP")
(else ;cross fingers, hope for the best
codeset)))
(define (locale-name->definition name)
"Return a <locale-definition> corresponding to NAME, guessing the charset,
or #f on failure."
(match (string-tokenize name %not-dot)
((source charset)
;; XXX: NAME is supposed to use the "normalized codeset", such as "utf8",
;; whereas the actual name used is different. Add a special case to make
;; the right guess for UTF-8.
(locale-definition (name name)
(source source)
(charset (denormalize-codeset charset))))
(_
#f)))
(define* (single-locale-directory locales
#:key (libc glibc))
"Return a directory containing all of LOCALES for LIBC compiled.
Because locale data formats are incompatible when switching from one libc to
another, locale data is put in a sub-directory named after the 'version' field
of LIBC."
(define version
(version-major+minor (package-version libc)))
(define build
(with-imported-modules (source-module-closure
'((gnu build locale)))
#~(begin
(use-modules (gnu build locale))
(mkdir #$output)
(mkdir (string-append #$output "/" #$version))
;; 'localedef' executes 'gzip' to access compressed locale sources.
(setenv "PATH"
(string-append #+gzip "/bin:" #+libc "/bin"))
(setvbuf (current-output-port) 'line)
(setvbuf (current-error-port) 'line)
(for-each (lambda (locale codeset name)
(build-locale locale
#:codeset codeset
#:name name
#:directory
(string-append #$output "/" #$version)))
'#$(map locale-definition-source locales)
'#$(map locale-definition-charset locales)
'#$(map locale-definition-name locales)))))
(computed-file (string-append "locale-" version) build))
(define* (locale-directory locales
#:key (libcs %default-locale-libcs))
"Return a locale directory containing all of LOCALES for each libc package
listed in LIBCS.
It is useful to list more than one libc when willing to support
already-installed packages built against a different libc since the locale
data format changes between libc versions."
(match libcs
((libc)
(single-locale-directory locales #:libc libc))
((libcs ..1)
(let ((dirs (map (lambda (libc)
(single-locale-directory locales #:libc libc))
libcs)))
(computed-file "locale-multiple-versions"
(with-imported-modules '((guix build union))
#~(begin
(use-modules (guix build union))
(union-build #$output (list #$@dirs))))
#:options '(#:local-build? #t
#:substitutable? #f))))))
(define %default-locale-libcs
;; The libcs for which we build locales by default.
(if (system-hurd?)
(list glibc/hurd)
(list glibc)))
(define %default-locale-definitions
;; Arbitrary set of locales that are built by default. They come as a
;; "bonus" in addition to that specified in the 'locale' field of the
;; operating system, for the user's convenience, so they shouldn't take too
;; much space.
(letrec-syntax ((utf8-locale (syntax-rules ()
((_ name*)
(locale-definition
;; Note: We choose "utf8", which is the
;; "normalized codeset".
(name (string-append name* ".utf8"))
(source name*)
(charset "UTF-8")))))
(utf8-locales (syntax-rules ()
((_ name ...)
(list (utf8-locale name) ...)))))
;; The six UN official languages plus Portuguese, with at most two
;; variants per language.
(utf8-locales "ar_DZ"
"en_GB"
"en_US"
"es_AR"
"es_ES"
"fr_FR"
"pt_BR"
"pt_PT"
"ru_RU"
"zh_CN")))
;;;
;;; Locales supported by glibc.
;;;
(define* (glibc-supported-locales #:optional (glibc glibc))
"Return a file-like object that contains a list of locale name/encoding
pairs such as (\"oc_FR.UTF-8\" . \"UTF-8\"). Each pair corresponds to a
locale supported by GLIBC."
(define build
(with-imported-modules (source-module-closure
'((guix build gnu-build-system)
(gnu build locale)))
#~(begin
(use-modules (guix build gnu-build-system)
(gnu build locale)
(ice-9 pretty-print))
(define unpack
(assq-ref %standard-phases 'unpack))
(setenv "PATH"
(string-append #+(file-append tar "/bin") ":"
#+(file-append xz "/bin") ":"
#+(file-append gzip "/bin")))
(unpack #:source #+(package-source glibc))
(let ((locales (call-with-input-file "localedata/SUPPORTED"
read-supported-locales)))
(call-with-output-file #$output
(lambda (port)
(pretty-print locales port)))))))
(computed-file "glibc-supported-locales.scm" build))
;;; locale.scm ends here
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