Gettext support on Android (#11435)

Co-authored-by: sfan5 <sfan5@live.de>
Co-authored-by: =?UTF-8?q?Olivier=20Samyn=20=F0=9F=8E=BB?= <code@oleastre.be>

.github/workflows/android.yml

@@ -28,6 +28,8 @@ jobs:
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: Install deps
+      run: sudo apt-get update; sudo apt-get install -y --no-install-recommends gettext
     - name: Build with Gradle
       run: cd android; ./gradlew assemblerelease
     - name: Save armeabi artifact

android/app/build.gradle

@@ -76,10 +76,13 @@ task prepareAssets() {
 	copy {
 		from "${projRoot}/games/${gameToCopy}" into "${assetsFolder}/games/${gameToCopy}"
 	}
-	/*copy {
-		// ToDo: fix broken locales
-		from "${projRoot}/po" into "${assetsFolder}/po"
-	}*/
+	fileTree("${projRoot}/po").include("**/*.po").forEach { poFile ->
+		def moPath = "${assetsFolder}/locale/${poFile.parentFile.name}/LC_MESSAGES/"
+		file(moPath).mkdirs()
+		exec {
+			commandLine 'msgfmt', '-o', "${moPath}/minetest.mo", poFile
+		}
+	}
 	copy {
 		from "${projRoot}/textures" into "${assetsFolder}/textures"
 	}

android/native/jni/Android.mk

@@ -47,6 +47,11 @@ LOCAL_MODULE := OpenAL
 LOCAL_SRC_FILES := deps/Android/OpenAL-Soft/${NDK_TOOLCHAIN_VERSION}/$(APP_ABI)/libopenal.a
 include $(PREBUILT_STATIC_LIBRARY)
 
+include $(CLEAR_VARS)
+LOCAL_MODULE := GetText
+LOCAL_SRC_FILES := deps/Android/GetText/${NDK_TOOLCHAIN_VERSION}/$(APP_ABI)/libintl.a
+include $(PREBUILT_STATIC_LIBRARY)
+
 include $(CLEAR_VARS)
 LOCAL_MODULE := Vorbis
 LOCAL_SRC_FILES := deps/Android/Vorbis/${NDK_TOOLCHAIN_VERSION}/$(APP_ABI)/libvorbis.a
@@ -64,6 +69,7 @@ LOCAL_CFLAGS += \
 	-DUSE_FREETYPE=1                \
 	-DUSE_LEVELDB=0                 \
 	-DUSE_LUAJIT=1                  \
+	-DUSE_GETTEXT=1                 \
 	-DVERSION_MAJOR=${versionMajor} \
 	-DVERSION_MINOR=${versionMinor} \
 	-DVERSION_PATCH=${versionPatch} \
@@ -89,6 +95,7 @@ LOCAL_C_INCLUDES := \
 	deps/Android/Freetype/include                   \
 	deps/Android/Irrlicht/include                   \
 	deps/Android/LevelDB/include                    \
+	deps/Android/GetText/include                    \
 	deps/Android/libiconv/include                   \
 	deps/Android/libiconv/libcharset/include        \
 	deps/Android/LuaJIT/src                         \
@@ -194,7 +201,7 @@ LOCAL_SRC_FILES += \
 # SQLite3
 LOCAL_SRC_FILES += deps/Android/sqlite/sqlite3.c
 
-LOCAL_STATIC_LIBRARIES += Curl Freetype Irrlicht OpenAL mbedTLS mbedx509 mbedcrypto Vorbis LuaJIT android_native_app_glue $(PROFILER_LIBS) #LevelDB
+LOCAL_STATIC_LIBRARIES += Curl Freetype Irrlicht OpenAL mbedTLS mbedx509 mbedcrypto Vorbis LuaJIT GetText android_native_app_glue $(PROFILER_LIBS) #LevelDB
 
 LOCAL_LDLIBS := -lEGL -lGLESv1_CM -lGLESv2 -landroid -lOpenSLES
 

src/gettext.cpp

@@ -127,6 +127,10 @@ void init_gettext(const char *path, const std::string &configured_language,
 		// Add user specified locale to environment
 		setenv("LANGUAGE", configured_language.c_str(), 1);
 
+#ifdef __ANDROID__
+		setenv("LANG", configured_language.c_str(), 1);
+#endif
+
 		// Reload locale with changed environment
 		setlocale(LC_ALL, "");
 #elif defined(_MSC_VER)

src/gui/modalMenu.cpp

@@ -268,7 +268,7 @@ bool GUIModalMenu::preprocessEvent(const SEvent &event)
 			std::string label = wide_to_utf8(getLabelByID(hovered->getID()));
 			if (label.empty())
 				label = "text";
-			message += gettext(label) + ":";
+			message += strgettext(label) + ":";
 
 			// single line text input
 			int type = 2;

src/porting_android.cpp

@@ -190,6 +190,7 @@ void initializePathsAndroid()
 
 	path_user    = path_storage + DIR_DELIM + PROJECT_NAME_C;
 	path_share   = path_storage + DIR_DELIM + PROJECT_NAME_C;
+	path_locale  = path_share + DIR_DELIM + "locale";
 	path_cache   = getAndroidPath(nativeActivity,
 			app_global->activity->clazz, mt_getAbsPath, "getCacheDir");
 	migrateCachePath();