Add support for translations defined via X-Ubuntu-Gettext-Domain.

debian/changelog

@@ -1,3 +1,9 @@
+libqtxdg (3.10.0-0ubuntu6) UNRELEASED; urgency=medium
+
+  * Add support for translations defined via X-Ubuntu-Gettext-Domain.
+
+ -- Simon Quigley <tsimonq2@ubuntu.com>  Mon, 06 Mar 2023 19:17:40 -0600
+
 libqtxdg (3.10.0-0ubuntu5) lunar; urgency=medium
 
   * Rebuild against lxqt-build-tools 0.12.0-0ubuntu3.

debian/patches/ubuntu-gettext-translations.patch

@@ -0,0 +1,39 @@
+Description: Add support for translations defined via X-Ubuntu-Gettext-Domain
+Author: Simon Quigley <tsimonq2@lubuntu.me> 
+Origin: vendor
+Forwarded: https://github.com/lxqt/libqtxdg/pull/292
+Last-Update: 2023-03-06
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/src/qtxdg/xdgdesktopfile.cpp
++++ b/src/qtxdg/xdgdesktopfile.cpp
+@@ -38,6 +38,7 @@
+ 
+ #include <cstdlib>
+ #include <unistd.h>
++#include <libintl.h>
+ 
+ #include <QDebug>
+ #include <QDBusInterface>
+@@ -921,7 +922,22 @@ QString XdgDesktopFile::localizedKey(con
+ 
+ QVariant XdgDesktopFile::localizedValue(const QString& key, const QVariant& defaultValue) const
+ {
+-    return value(localizedKey(key), defaultValue);
++    // If the file is translated via gettext, override locally-defined translations
++    if (contains(QLatin1String("X-Ubuntu-Gettext-Domain")))
++    {
++        QString domain = value(QLatin1String("X-Ubuntu-Gettext-Domain")).toString();
++        QString val = value(key, defaultValue).toString().trimmed();
++        if (!val.isEmpty()) {
++            QByteArray _domain = domain.toUtf8();
++            QByteArray _val = val.toUtf8();
++            char *translated = dgettext(_domain.constData(), _val.constData());
++            return QVariant(QString::fromUtf8(translated));
++        } else {
++            return QVariant();
++        }
++    } else {
++        return value(localizedKey(key), defaultValue);
++    }
+ }