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-rw-r--r--gnu/system/locale.scm32
1 files changed, 31 insertions, 1 deletions
diff --git a/gnu/system/locale.scm b/gnu/system/locale.scm
index e798827a01..f9d713e0cf 100644
--- a/gnu/system/locale.scm
+++ b/gnu/system/locale.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -33,6 +33,7 @@
locale-definition-source
locale-definition-charset
+ locale-name->definition
locale-directory
%default-locale-libcs
@@ -52,6 +53,35 @@
(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* (localedef-command locale
#:key (libc (canonical-package glibc)))
"Return a gexp that runs 'localedef' from LIBC to build LOCALE."