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configmgr: Use a proper LanguageTag-based locale fallback mechanism.

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Without this, zh-Hant-TW locale used via the LibreOfficeKit was reduced
to zh-Hant and further to zh, which was interpreted as zh-CN, causing
incorrect strings particularly in the sidebar.

Change-Id: I58e53f71d13824e422a7b3634f3822d55090f8ee
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99203
Tested-by: Jenkins
Reviewed-by: Andras Timar <andras.timar@collabora.com>
This commit is contained in:
Jan Holesovsky
2020-07-23 00:42:42 +02:00
committed by Andras Timar
parent 7ee6e771e2
commit dfc28be248
1 changed files with 10 additions and 14 deletions
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24
configmgr/source/access.cxx
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@@ -1385,29 +1385,25 @@ rtl::Reference< ChildAccess > Access::getChild(OUString const & name) {
locale = comphelper::LibreOfficeKit::getLanguageTag().getBcp47();
if (!locale.isEmpty()) {
// Find best match using an adaptation of RFC 4647 lookup matching
// rules, removing "-" or "_" delimited segments from the end:
for (;;) {
rtl::Reference< ChildAccess > child(getChild(locale));
if (child.is()) {
// Find the best match using the LanguageTag fallback mechanism
std::vector<OUString> aFallbacks = LanguageTag(locale).getFallbackStrings(true);
for (const OUString& rFallback : aFallbacks)
{
rtl::Reference<ChildAccess> child(getChild(rFallback));
if (child.is())
return child;
}
sal_Int32 i = locale.getLength() - 1;
while (i > 0 && locale[i] != '-' && locale[i] != '_') {
--i;
}
if (i <= 0) {
break;
}
locale = locale.copy(0, i);
}
// As a workaround for broken xcu data that does not use shortest
// xml:lang attributes, look for the first entry with the same first
// segment as the requested language tag before falling back to
// defaults (see fdo#33638):
assert(aFallbacks.size() > 0);
locale = aFallbacks[aFallbacks.size() - 1];
assert(
!locale.isEmpty() && locale.indexOf('-') == -1 &&
locale.indexOf('_') == -1);
std::vector< rtl::Reference< ChildAccess > > children(
getAllChildren());
for (auto const& child : children)