Load translations from an empty context too.

src/main.cpp

@@ -26,6 +26,7 @@
 #include "player.h"
 #include "song.h"
 #include "equalizer.h"
+#include "potranslator.h"
 
 #include <QtSingleApplication>
 #include <QtDebug>
@@ -57,7 +58,7 @@ void LoadTranslation(const QString& prefix, const QString& path) {
     return;
 #endif
 
-  QTranslator* t = new QTranslator;
+  QTranslator* t = new PoTranslator;
   if (t->load(prefix + "_" + QLocale::system().name(), path))
     QCoreApplication::installTranslator(t);
   else

src/potranslator.h

@@ -0,0 +1,35 @@
+/* This file is part of Clementine.
+
+   Clementine 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.
+
+   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef POTRANSLATOR_H
+#define POTRANSLATOR_H
+
+#include <QTranslator>
+
+// We convert from .po files to .qm files, which loses context information.
+// This translator tries loading strings with an empty context if it can't
+// find any others.
+
+class PoTranslator : public QTranslator {
+ public:
+  QString translate(const char* context, const char* source_text, const char* disambiguation = 0) const {
+    QString ret = QTranslator::translate(context, source_text, disambiguation);
+    if (!ret.isEmpty()) return ret;
+    return QTranslator::translate(NULL, source_text, disambiguation);
+  }
+};
+
+#endif // POTRANSLATOR_H

tests/translations_test.cpp

@@ -17,18 +17,19 @@
 #include <gtest/gtest.h>
 
 #include <QFile>
-#include <QTranslator>
 
+#include "potranslator.h"
 #include "test_utils.h"
 
 TEST(Translations, Basic) {
   ASSERT_TRUE(QFile::exists(":/translations"));
-  ASSERT_TRUE(QFile::exists(":/translations/clementine_empty.qm"));
   ASSERT_TRUE(QFile::exists(":/translations/clementine_es.qm"));
 
-  QTranslator t;
+  PoTranslator t;
   t.load("clementine_es.qm", ":/translations");
 
   EXPECT_EQ(QString::fromUtf8("Colección"),
             t.translate("MainWindow", "Library"));
+  EXPECT_EQ(QString::fromUtf8("Colección"),
+            t.translate("", "Library"));
 }