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[Qemu-stable] [PULL 6/6] gtk: use setlocale() for LC_MESSAGES only
From: |
Gerd Hoffmann |
Subject: |
[Qemu-stable] [PULL 6/6] gtk: use setlocale() for LC_MESSAGES only |
Date: |
Tue, 15 Sep 2015 12:38:55 +0200 |
From: Alberto Garcia <address@hidden>
The QEMU code is not internationalized and assumes that it runs under
the C locale, but if we use the GTK+ UI we'll end up importing the
locale settings from the environment. This can break things, such as
the JSON generator and iotest 120 in locales that use a decimal comma.
We do however have translations for a few simple strings for the GTK+
menu items, so in order to run QEMU using the C locale, and yet have a
translated UI let's use setlocale() for LC_MESSAGES only.
Cc: address@hidden
Signed-off-by: Alberto Garcia <address@hidden>
Signed-off-by: Gerd Hoffmann <address@hidden>
---
ui/gtk.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/ui/gtk.c b/ui/gtk.c
index a17b1d1..187de74 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -1950,7 +1950,8 @@ void gtk_display_init(DisplayState *ds, bool full_screen,
bool grab_on_hover)
s->free_scale = FALSE;
- setlocale(LC_ALL, "");
+ /* LC_MESSAGES only. See early_gtk_display_init() for details */
+ setlocale(LC_MESSAGES, "");
bindtextdomain("qemu", CONFIG_QEMU_LOCALEDIR);
textdomain("qemu");
@@ -2019,6 +2020,24 @@ void gtk_display_init(DisplayState *ds, bool
full_screen, bool grab_on_hover)
void early_gtk_display_init(int opengl)
{
+ /* The QEMU code relies on the assumption that it's always run in
+ * the C locale. Therefore it is not prepared to deal with
+ * operations that produce different results depending on the
+ * locale, such as printf's formatting of decimal numbers, and
+ * possibly others.
+ *
+ * Since GTK+ calls setlocale() by default -importing the locale
+ * settings from the environment- we must prevent it from doing so
+ * using gtk_disable_setlocale().
+ *
+ * QEMU's GTK+ UI, however, _does_ have translations for some of
+ * the menu items. As a trade-off between a functionally correct
+ * QEMU and a fully internationalized UI we support importing
+ * LC_MESSAGES from the environment (see the setlocale() call
+ * earlier in this file). This allows us to display translated
+ * messages leaving everything else untouched.
+ */
+ gtk_disable_setlocale();
gtkinit = gtk_init_check(NULL, NULL);
if (!gtkinit) {
/* don't exit yet, that'll break -help */
--
1.8.3.1
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