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author | Marius Bakke <mbakke@fastmail.com> | 2019-06-09 00:57:36 +0200 |
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committer | Marius Bakke <mbakke@fastmail.com> | 2019-06-09 00:57:36 +0200 |
commit | 69ecd666d73ebc5ee7a0be54f4e24f000d1d7e31 (patch) | |
tree | 80fc467b3129cd302aed02622dd497247a8c5bb0 /gnu/build/locale.scm | |
parent | 4bed3b101253e5f82c6423f0eb55b307ec839f53 (diff) | |
parent | c6de5afe5c5da34513ea43b041fead30f28f57d4 (diff) | |
download | guix-69ecd666d73ebc5ee7a0be54f4e24f000d1d7e31.tar.gz |
Merge branch 'master' into staging
Diffstat (limited to 'gnu/build/locale.scm')
-rw-r--r-- | gnu/build/locale.scm | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/gnu/build/locale.scm b/gnu/build/locale.scm new file mode 100644 index 0000000000..412759a320 --- /dev/null +++ b/gnu/build/locale.scm @@ -0,0 +1,95 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2019 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 (gnu build locale) + #:use-module (guix build utils) + #:use-module (srfi srfi-1) + #:use-module (ice-9 rdelim) + #:use-module (ice-9 match) + #:use-module (ice-9 regex) + #:export (build-locale + normalize-codeset + locale->name+codeset + read-supported-locales)) + +(define locale-rx + ;; Regexp matching a locale line in 'localedata/SUPPORTED'. + (make-regexp + "^[[:space:]]*([[:graph:]]+)/([[:graph:]]+)[[:space:]]*\\\\$")) + +(define (read-supported-locales port) + "Read the 'localedata/SUPPORTED' file from PORT. That file is actually a +makefile snippet, with one locale per line, and a header that can be +discarded." + (let loop ((locales '())) + (define line + (read-line port)) + + (cond ((eof-object? line) + (reverse locales)) + ((string-prefix? "#" (string-trim line)) ;comment + (loop locales)) + ((string-contains line "=") ;makefile variable assignment + (loop locales)) + (else + (match (regexp-exec locale-rx line) + (#f + (loop locales)) + (m + (loop (alist-cons (match:substring m 1) + (match:substring m 2) + locales)))))))) + +(define (normalize-codeset codeset) + "Compute the \"normalized\" variant of CODESET." + ;; info "(libc) Using gettextized software", for the algorithm used to + ;; compute the normalized codeset. + (letrec-syntax ((-> (syntax-rules () + ((_ proc value) + (proc value)) + ((_ proc rest ...) + (proc (-> rest ...)))))) + (-> (lambda (str) + (if (string-every char-set:digit str) + (string-append "iso" str) + str)) + string-downcase + (lambda (str) + (string-filter char-set:letter+digit str)) + codeset))) + +(define* (build-locale locale + #:key + (localedef "localedef") + (directory ".") + (codeset "UTF-8") + (name (string-append locale "." codeset))) + "Compute locale data for LOCALE and CODESET--e.g., \"en_US\" and +\"UTF-8\"--with LOCALEDEF, and store it in DIRECTORY under NAME." + (format #t "building locale '~a'...~%" name) + (invoke localedef "--no-archive" "--prefix" directory + "-i" locale "-f" codeset + (string-append directory "/" name))) + +(define (locale->name+codeset locale) + "Split a locale name such as \"aa_ER@saaho.UTF-8\" into two values: the +language/territory/modifier part, and the codeset." + (match (string-rindex locale #\.) + (#f (values locale #f)) + (dot (values (string-take locale dot) + (string-drop locale (+ dot 1)))))) |