Make transliteration configurable per-language

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/GBApplication.java

@@ -117,7 +117,7 @@ public class GBApplication extends Application {
     private static SharedPreferences sharedPrefs;
     private static final String PREFS_VERSION = "shared_preferences_version";
     //if preferences have to be migrated, increment the following and add the migration logic in migratePrefs below; see http://stackoverflow.com/questions/16397848/how-can-i-migrate-android-preferences-with-a-new-version
-    private static final int CURRENT_PREFS_VERSION = 15;
+    private static final int CURRENT_PREFS_VERSION = 16;
 
     private static LimitedQueue mIDSenderLookup = new LimitedQueue(16);
     private static Prefs prefs;
@@ -1166,6 +1166,30 @@ public class GBApplication extends Application {
             }
         }
 
+        if (oldVersion < 16) {
+            // If transliteration was enabled for a device, migrate it to the per-language setting
+            final String defaultLanguagesIfEnabled = "extended_ascii,scandinavian,german,russian,hebrew,greek,ukranian,arabic,persian,lithuanian,polish,estonian,icelandic,czech,turkish,bengali,korean";
+            try (DBHandler db = acquireDB()) {
+                final DaoSession daoSession = db.getDaoSession();
+                final List<Device> activeDevices = DBHelper.getActiveDevices(daoSession);
+
+                for (Device dbDevice : activeDevices) {
+                    final SharedPreferences deviceSharedPrefs = GBApplication.getDeviceSpecificSharedPrefs(dbDevice.getIdentifier());
+                    final SharedPreferences.Editor deviceSharedPrefsEdit = deviceSharedPrefs.edit();
+
+                    if (deviceSharedPrefs.getBoolean("pref_transliteration_enabled", false)) {
+                        deviceSharedPrefsEdit.putString("pref_transliteration_languages", defaultLanguagesIfEnabled);
+                    }
+
+                    deviceSharedPrefsEdit.remove("pref_transliteration_enabled");
+
+                    deviceSharedPrefsEdit.apply();
+                }
+            } catch (Exception e) {
+                Log.w(TAG, "error acquiring DB lock");
+            }
+        }
+
         editor.putString(PREFS_VERSION, Integer.toString(CURRENT_PREFS_VERSION));
         editor.apply();
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java

@@ -141,7 +141,7 @@ public class DeviceSettingsPreferenceConst {
     public static final String PREF_SONYSWR12_SMART_INTERVAL = "smart_alarm_interval_preference";
 
     public static final String PREF_BT_CONNECTED_ADVERTISEMENT = "bt_connected_advertisement";
-    public static final String PREF_TRANSLITERATION_ENABLED = "pref_transliteration_enabled";
+    public static final String PREF_TRANSLITERATION_LANGUAGES = "pref_transliteration_languages";
 
     public static final String PREF_NOTHING_EAR1_INEAR = "pref_nothing_inear_detection";
     public static final String PREF_NOTHING_EAR1_AUDIOMODE = "pref_nothing_audiomode";

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationService.java

@@ -45,6 +45,7 @@ import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 import java.util.UUID;
 
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
@@ -85,10 +86,11 @@ import nodomain.freeyourgadget.gadgetbridge.util.DeviceHelper;
 import nodomain.freeyourgadget.gadgetbridge.util.EmojiConverter;
 import nodomain.freeyourgadget.gadgetbridge.util.GB;
 import nodomain.freeyourgadget.gadgetbridge.util.GBPrefs;
-import nodomain.freeyourgadget.gadgetbridge.util.LanguageUtils;
+import nodomain.freeyourgadget.gadgetbridge.util.language.LanguageUtils;
 import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
+import nodomain.freeyourgadget.gadgetbridge.util.language.Transliterator;
 
-import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_ENABLED;
+import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_LANGUAGES;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_ADD_CALENDAREVENT;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_APP_CONFIGURE;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_APP_REORDER;
@@ -576,12 +578,13 @@ public class DeviceCommunicationService extends Service implements SharedPrefere
         DeviceSupport deviceSupport = getDeviceSupport(device);
 
         Prefs devicePrefs = new Prefs(GBApplication.getDeviceSpecificSharedPrefs(device.getAddress()));
-        boolean transliterate = devicePrefs.getBoolean(PREF_TRANSLITERATION_ENABLED, false);
 
-        if (transliterate) {
+        final Transliterator transliterator = LanguageUtils.getTransliterator(device);
+
+        if (transliterator != null) {
             for (String extra : GBDeviceService.transliterationExtras) {
                 if (intent.hasExtra(extra)) {
-                    intent.putExtra(extra, LanguageUtils.transliterate(intent.getStringExtra(extra)));
+                    intent.putExtra(extra, transliterator.transliterate(intent.getStringExtra(extra)));
                 }
             }
         }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/LanguageUtils.java

@@ -1,184 +0,0 @@
-/*  Copyright (C) 2017-2021 Andreas Shimokawa, Aniruddha Adhikary, Daniele
-    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
-    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani
-
-    This file is part of Gadgetbridge.
-
-    Gadgetbridge is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published
-    by the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Gadgetbridge 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 Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
-package nodomain.freeyourgadget.gadgetbridge.util;
-
-import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_ENABLED;
-
-import android.content.SharedPreferences;
-
-import org.apache.commons.lang3.text.WordUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.text.Normalizer;
-import java.util.HashMap;
-import java.util.Map;
-
-import nodomain.freeyourgadget.gadgetbridge.GBApplication;
-import nodomain.freeyourgadget.gadgetbridge.R;
-import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
-
-public class LanguageUtils {
-    private static final Logger LOG = LoggerFactory.getLogger(LanguageUtils.class);
-    // Transliteration map with english equivalent for unsupported chars
-    @SuppressWarnings("OverwrittenKey")
-    private static final Map<Character, String> transliterateMap = new HashMap<Character, String>() {
-        {
-            // Extended ASCII characters
-            put('œ', "oe"); put('ª', "a"); put('º', "o"); put('«',"\""); put('»',"\"");
-            
-            // Scandinavian characters
-            put('Æ',"Ae"); put('æ',"ae");
-            put('Ø',"Oe"); put('ø',"oe");
-            put('Å',"Aa"); put('å',"aa");
-            
-            // German characters
-            put('ä',"ae"); put('ö',"oe"); put('ü',"ue");
-            put('Ä',"Ae"); put('Ö',"Oe"); put('Ü',"Üe");
-            put('ß',"ss"); put('ẞ',"SS");
-
-            // Russian chars
-            put('а', "a"); put('б', "b"); put('в', "v");  put('г', "g"); put('д', "d"); put('е', "e"); put('ё', "jo"); put('ж', "zh");
-            put('з', "z"); put('и', "i"); put('й', "jj"); put('к', "k"); put('л', "l"); put('м', "m"); put('н', "n");  put('о', "o");
-            put('п', "p"); put('р', "r"); put('с', "s");  put('т', "t"); put('у', "u"); put('ф', "f"); put('х', "kh"); put('ц', "c");
-            put('ч', "ch");put('ш', "sh");put('щ', "shh");put('ъ', "\"");put('ы', "y"); put('ь', "'"); put('э', "eh"); put('ю', "ju");
-            put('я', "ja");
-
-            // Hebrew chars
-            put('א', "a"); put('ב', "b"); put('ג', "g");  put('ד', "d"); put('ה', "h"); put('ו', "u"); put('ז', "z"); put('ח', "kh");
-            put('ט', "t"); put('י', "y"); put('כ', "c"); put('ל', "l"); put('מ', "m"); put('נ', "n"); put('ס', "s");  put('ע', "'");
-            put('פ', "p"); put('צ', "ts"); put('ק', "k");  put('ר', "r"); put('ש', "sh"); put('ת', "th"); put('ף', "f"); put('ץ', "ts");
-            put('ך', "ch");put('ם', "m");put('ן', "n");
-
-            // Greek chars
-            put('α',"a");put('ά',"a");put('β',"v");put('γ',"g");put('δ',"d");put('ε',"e");put('έ',"e");put('ζ',"z");put('η',"i");
-            put('ή',"i");put('θ',"th");put('ι',"i");put('ί',"i");put('ϊ',"i");put('ΐ',"i");put('κ',"k");put('λ',"l");put('μ',"m");
-            put('ν',"n");put('ξ',"ks");put('ο',"o");put('ό',"o");put('π',"p");put('ρ',"r");put('σ',"s");put('ς',"s");put('τ',"t");
-            put('υ',"y");put('ύ',"y");put('ϋ',"y");put('ΰ',"y");put('φ',"f");put('χ',"ch");put('ψ',"ps");put('ω',"o");put('ώ',"o");
-            put('Α',"A");put('Ά',"A");put('Β',"B");put('Γ',"G");put('Δ',"D");put('Ε',"E");put('Έ',"E");put('Ζ',"Z");put('Η',"I");
-            put('Ή',"I");put('Θ',"TH");put('Ι',"I");put('Ί',"I");put('Ϊ',"I");put('Κ',"K");put('Λ',"L");put('Μ',"M");put('Ν',"N");
-            put('Ξ',"KS");put('Ο',"O");put('Ό',"O");put('Π',"P");put('Ρ',"R");put('Σ',"S");put('Τ',"T");put('Υ',"Y");put('Ύ',"Y");
-            put('Ϋ',"Y");put('Φ',"F");put('Χ',"CH");put('Ψ',"PS");put('Ω',"O");put('Ώ',"O");
-
-            // Ukrainian characters
-            put('ґ', "gh"); put('є', "je"); put('і', "i"); put('ї', "ji"); put('Ґ', "GH"); put('Є', "JE"); put('І', "I"); put('Ї', "JI");
-
-            // Arabic
-            put('ا', "a"); put('ب', "b"); put('ت', "t"); put('ث', "th"); put('ج', "j"); put('ح', "7"); put('خ', "5");
-            put('د', "d"); put('ذ', "th"); put('ر', "r"); put('ز', "z"); put('س', "s"); put('ش', "sh"); put('ص', "9");
-            put('ض', "9'"); put('ط', "6"); put('ظ', "6'"); put('ع', "3"); put('غ', "3'"); put('ف', "f");
-            put('ق', "q"); put('ك', "k"); put('ل', "l"); put('م', "m"); put('ن', "n"); put('ه', "h");
-            put('و', "w"); put('ي', "y"); put('ى', "a"); put('ﺓ', "");
-            put('آ', "2"); put('ئ', "2"); put('إ', "2"); put('ؤ', "2"); put('أ', "2"); put('ء', "2");
-            put('٠', "0"); put('١', "1"); put('٢', "2"); put('٣', "3"); put('٤', "4"); put('٥', "5");
-            put('٦', "6"); put('٧', "7"); put('٨', "8"); put('٩', "9");
-
-            // Persian(Farsi)
-            put('پ', "p"); put('چ', "ch"); put('ژ', "zh"); put('ک', "k"); put('گ', "g"); put('ی', "y"); put('‌', " "); 
-            put('؟', "?"); put('٪', "%"); put('؛', ";"); put('،', ","); put('۱', "1"); put('۲', "2"); put('۳', "3"); 
-            put('۴', "4"); put('۵', "5"); put('۶', "6"); put('۷', "7"); put('۸', "8"); put('۹', "9"); put('۰', "0"); 
-            put('»', "<"); put('«', ">"); put('ِ', "e"); put('َ', "a"); put('ُ', "o"); put('ّ', "");
-
-            // Polish
-            put('Ł', "L"); put('ł', "l");
-
-            //Lithuanian
-            put('ą', "a"); put('č', "c"); put('ę', "e"); put('ė', "e"); put('į', "i"); put('š', "s"); put('ų', "u"); put('ū', "u"); put('ž', "z");
-
-
-            // Estonian
-            put('ä', "a"); put('Ä', "A");
-            put('ö', "o"); put('õ', "o");
-            put('Ö', "O"); put('Õ', "O");
-            put('ü', "u"); put('Ü', "U");
-
-            // Icelandic
-            put('Þ',"Th"); put('þ',"th"); put('Ð',"D"); put('ð',"d");
-
-            // Czech
-            put('ř',"r"); put('ě',"e"); put('ý',"y"); put('á',"a"); put('í',"i"); put('é',"e");
-            put('ó',"o"); put('ú',"u"); put('ů',"u"); put('ď',"d"); put('ť',"t"); put('ň',"n");
-
-            // Turkish
-            put('ı',"i");
-
-            //TODO: these must be configurable. If someone wants to transliterate cyrillic it does not mean his device has no German umlauts
-            // all or nothing is really bad here
-        }
-    };
-
-    /**
-     * Replaces unsupported symbols to english
-     * @param txt input text
-     * @return transliterated text
-     */
-    public static String transliterate(String txt){
-        if (txt == null || txt.isEmpty()) {
-            return txt;
-        }
-
-        StringBuilder messageBuilder = new StringBuilder();
-
-        // Simple, char-by-char transliteration.
-        char[] chars = txt.toCharArray();
-        for (char c : chars)
-        {
-            messageBuilder.append(transliterate(c));
-        }
-        String message = messageBuilder.toString();
-
-        // More complex transliteration for specific languages.
-        message = BengaliLanguageUtils.transliterate(message);
-        message = KoreanLanguageUtils.transliterate(message);
-
-        return flattenToAscii(message);
-    }
-
-    /**
-     * Replaces unsupported symbol to english by {@code transliterateMap}
-     * @param c input char
-     * @return replacement text
-     */
-    private static String transliterate(char c){
-        char lowerChar = Character.toLowerCase(c);
-
-        if (transliterateMap.containsKey(lowerChar)) {
-            String replace = transliterateMap.get(lowerChar);
-
-            if (lowerChar != c)
-            {
-                return WordUtils.capitalize(replace);
-            }
-
-            return replace;
-        }
-
-        return String.valueOf(c);
-    }
-
-    /**
-     * Converts the diacritics
-     * @param string input text
-     * @return converted text
-     */
-    private static String flattenToAscii(String string) {
-        string = Normalizer.normalize(string, Normalizer.Form.NFD);
-        return string.replaceAll("\\p{M}", "");
-    }
-}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/LanguageUtils.java

@@ -0,0 +1,127 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language;
+
+import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_LANGUAGES;
+
+import androidx.annotation.Nullable;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.text.Normalizer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
+import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.ArabicTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.BengaliTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.CzechTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.EstonianTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.ExtendedAsciiTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.FlattenToAsciiTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.GermanTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.GreekTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.HebrewTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.IcelandicTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.KoreanTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.LithuanianTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.PersianTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.PolishTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.RussianTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.ScandinavianTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.TurkishTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.impl.UkranianTransliterator;
+
+public class LanguageUtils {
+    private static final Logger LOG = LoggerFactory.getLogger(LanguageUtils.class);
+
+    private static final Map<String, Transliterator> TRANSLITERATORS_MAP = new HashMap<String, Transliterator>() {{
+        put("arabic", new ArabicTransliterator());
+        put("bengali", new BengaliTransliterator());
+        put("czech", new CzechTransliterator());
+        put("estonian", new EstonianTransliterator());
+        put("extended_ascii", new ExtendedAsciiTransliterator());
+        put("german", new GermanTransliterator());
+        put("greek", new GreekTransliterator());
+        put("hebrew", new HebrewTransliterator());
+        put("icelandic", new IcelandicTransliterator());
+        put("korean", new KoreanTransliterator());
+        put("lithuanian", new LithuanianTransliterator());
+        put("persian", new PersianTransliterator());
+        put("polish", new PolishTransliterator());
+        put("russian", new RussianTransliterator());
+        put("scandinavian", new ScandinavianTransliterator());
+        put("turkish", new TurkishTransliterator());
+        put("ukranian", new UkranianTransliterator());
+    }};
+
+    /**
+     * Get a {@link Transliterator} for a specific language.
+     *
+     * @param language the language
+     * @return the transliterator, if it exists
+     * @throws IllegalArgumentException if there is no transliterator for the provided language
+     */
+    public static Transliterator getTransliterator(final String language) {
+        if (!TRANSLITERATORS_MAP.containsKey(language)) {
+            throw new IllegalArgumentException(String.format("Transliterator for %s not found", language));
+        }
+
+        return TRANSLITERATORS_MAP.get(language);
+    }
+
+    /**
+     * Get the configured transliterator for the provided {@link GBDevice}, if any.
+     *
+     * @param device the device
+     * @return the configured transliterator, null if not configured
+     */
+    @Nullable
+    public static Transliterator getTransliterator(final GBDevice device) {
+        final Prefs devicePrefs = new Prefs(GBApplication.getDeviceSpecificSharedPrefs(device.getAddress()));
+        final String transliterateLanguagesPref = devicePrefs.getString(PREF_TRANSLITERATION_LANGUAGES, "");
+
+        if (transliterateLanguagesPref.isEmpty()) {
+            return null;
+        }
+
+        final List<String> languages = Arrays.asList(transliterateLanguagesPref.split(","));
+        final List<Transliterator> transliterators = new ArrayList<>(languages.size());
+
+        for (String language : languages) {
+            if (!TRANSLITERATORS_MAP.containsKey(language)) {
+                LOG.warn("Transliterator for {} not found", language);
+                continue;
+            }
+
+            transliterators.add(TRANSLITERATORS_MAP.get(language));
+        }
+
+        transliterators.add(new FlattenToAsciiTransliterator());
+
+        return new MultiTransliterator(transliterators);
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/MultiTransliterator.java

@@ -0,0 +1,42 @@
+/*  Copyright (C) 2022 José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language;
+
+import java.text.Normalizer;
+import java.util.List;
+import java.util.Map;
+
+public class MultiTransliterator implements Transliterator {
+    private final List<Transliterator> transliterators;
+
+    public MultiTransliterator(final List<Transliterator> transliterators) {
+        this.transliterators = transliterators;
+    }
+
+    @Override
+    public String transliterate(String txt) {
+        if (txt == null || txt.isEmpty()) {
+            return txt;
+        }
+
+        for (Transliterator transliterator : transliterators) {
+            txt = transliterator.transliterate(txt);
+        }
+
+        return txt;
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/SimpleTransliterator.java

@@ -0,0 +1,64 @@
+/*  Copyright (C) 2022 José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language;
+
+import org.apache.commons.lang3.text.WordUtils;
+
+import java.text.Normalizer;
+import java.util.Map;
+
+public class SimpleTransliterator implements Transliterator {
+    private final Map<Character, String> transliterateMap;
+
+    public SimpleTransliterator(final Map<Character, String> transliterateMap) {
+        this.transliterateMap = transliterateMap;
+    }
+
+    @Override
+    public String transliterate(String txt) {
+        if (txt == null || txt.isEmpty()) {
+            return txt;
+        }
+
+        final StringBuilder messageBuilder = new StringBuilder();
+
+        // Simple, char-by-char transliteration.
+        final char[] chars = txt.toCharArray();
+        for (char c : chars) {
+            messageBuilder.append(transliterate(c));
+        }
+        final String message = messageBuilder.toString();
+
+        return message;
+    }
+
+    private String transliterate(char c) {
+        final char lowerChar = Character.toLowerCase(c);
+
+        if (transliterateMap.containsKey(lowerChar)) {
+            final String replace = transliterateMap.get(lowerChar);
+
+            if (lowerChar != c) {
+                return WordUtils.capitalize(replace);
+            }
+
+            return replace;
+        }
+
+        return String.valueOf(c);
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/Transliterator.java

@@ -0,0 +1,21 @@
+/*  Copyright (C) 2022 José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language;
+
+public interface Transliterator {
+    String transliterate(String txt);
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/ArabicTransliterator.java

@@ -0,0 +1,39 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class ArabicTransliterator extends SimpleTransliterator {
+    public ArabicTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ا', "a"); put('ب', "b"); put('ت', "t"); put('ث', "th"); put('ج', "j"); put('ح', "7"); put('خ', "5");
+            put('د', "d"); put('ذ', "th"); put('ر', "r"); put('ز', "z"); put('س', "s"); put('ش', "sh"); put('ص', "9");
+            put('ض', "9'"); put('ط', "6"); put('ظ', "6'"); put('ع', "3"); put('غ', "3'"); put('ف', "f");
+            put('ق', "q"); put('ك', "k"); put('ل', "l"); put('م', "m"); put('ن', "n"); put('ه', "h");
+            put('و', "w"); put('ي', "y"); put('ى', "a"); put('ﺓ', "");
+            put('آ', "2"); put('ئ', "2"); put('إ', "2"); put('ؤ', "2"); put('أ', "2"); put('ء', "2");
+            put('٠', "0"); put('١', "1"); put('٢', "2"); put('٣', "3"); put('٤', "4"); put('٥', "5");
+            put('٦', "6"); put('٧', "7"); put('٨', "8"); put('٩', "9");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/BengaliTransliterator.java

@@ -15,15 +15,17 @@
 
     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>. */
-package nodomain.freeyourgadget.gadgetbridge.util;
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
 
 import java.util.HashMap;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import nodomain.freeyourgadget.gadgetbridge.util.language.Transliterator;
+
 // What's the reason to extending LanguageUtils?
 // Just doing it because already done in the previous code.
-public class BengaliLanguageUtils extends LanguageUtils {
+public class BengaliTransliterator implements Transliterator {
         // Composite Letters.
     private final static HashMap<String, String> composites = new HashMap<String, String>() {
         {
@@ -187,8 +189,9 @@ public class BengaliLanguageUtils extends LanguageUtils {
         return null;
     }
 
-    public static String transliterate(String txt) {
+    @Override
-        if (txt.isEmpty()) {
+    public String transliterate(String txt) {
+        if (txt == null || txt.isEmpty()) {
             return txt;
         }
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/CzechTransliterator.java

@@ -0,0 +1,32 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class CzechTransliterator extends SimpleTransliterator {
+    public CzechTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ř',"r"); put('ě',"e"); put('ý',"y"); put('á',"a"); put('í',"i"); put('é',"e");
+            put('ó',"o"); put('ú',"u"); put('ů',"u"); put('ď',"d"); put('ť',"t"); put('ň',"n");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/EstonianTransliterator.java

@@ -0,0 +1,34 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class EstonianTransliterator extends SimpleTransliterator {
+    public EstonianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ä', "a"); put('Ä', "A");
+            put('ö', "o"); put('õ', "o");
+            put('Ö', "O"); put('Õ', "O");
+            put('ü', "u"); put('Ü', "U");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/ExtendedAsciiTransliterator.java

@@ -0,0 +1,31 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class ExtendedAsciiTransliterator extends SimpleTransliterator {
+    public ExtendedAsciiTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('œ', "oe"); put('ª', "a"); put('º', "o"); put('«',"\""); put('»',"\"");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/FlattenToAsciiTransliterator.java

@@ -0,0 +1,37 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.text.Normalizer;
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+import nodomain.freeyourgadget.gadgetbridge.util.language.Transliterator;
+
+public class FlattenToAsciiTransliterator implements Transliterator {
+    @Override
+    public String transliterate(String txt) {
+        if (txt == null || txt.isEmpty()) {
+            return txt;
+        }
+
+        txt = Normalizer.normalize(txt, Normalizer.Form.NFD);
+        return txt.replaceAll("\\p{M}", "");
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/GermanTransliterator.java

@@ -0,0 +1,33 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class GermanTransliterator extends SimpleTransliterator {
+    public GermanTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ä',"ae"); put('ö',"oe"); put('ü',"ue");
+            put('Ä',"Ae"); put('Ö',"Oe"); put('Ü',"Üe");
+            put('ß',"ss"); put('ẞ',"SS");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/GreekTransliterator.java

@@ -0,0 +1,38 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class GreekTransliterator extends SimpleTransliterator {
+    public GreekTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('α',"a");put('ά',"a");put('β',"v");put('γ',"g");put('δ',"d");put('ε',"e");put('έ',"e");put('ζ',"z");put('η',"i");
+            put('ή',"i");put('θ',"th");put('ι',"i");put('ί',"i");put('ϊ',"i");put('ΐ',"i");put('κ',"k");put('λ',"l");put('μ',"m");
+            put('ν',"n");put('ξ',"ks");put('ο',"o");put('ό',"o");put('π',"p");put('ρ',"r");put('σ',"s");put('ς',"s");put('τ',"t");
+            put('υ',"y");put('ύ',"y");put('ϋ',"y");put('ΰ',"y");put('φ',"f");put('χ',"ch");put('ψ',"ps");put('ω',"o");put('ώ',"o");
+            put('Α',"A");put('Ά',"A");put('Β',"B");put('Γ',"G");put('Δ',"D");put('Ε',"E");put('Έ',"E");put('Ζ',"Z");put('Η',"I");
+            put('Ή',"I");put('Θ',"TH");put('Ι',"I");put('Ί',"I");put('Ϊ',"I");put('Κ',"K");put('Λ',"L");put('Μ',"M");put('Ν',"N");
+            put('Ξ',"KS");put('Ο',"O");put('Ό',"O");put('Π',"P");put('Ρ',"R");put('Σ',"S");put('Τ',"T");put('Υ',"Y");put('Ύ',"Y");
+            put('Ϋ',"Y");put('Φ',"F");put('Χ',"CH");put('Ψ',"PS");put('Ω',"O");put('Ώ',"O");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/HebrewTransliterator.java

@@ -0,0 +1,34 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class HebrewTransliterator extends SimpleTransliterator {
+    public HebrewTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('א', "a"); put('ב', "b"); put('ג', "g");  put('ד', "d"); put('ה', "h"); put('ו', "u"); put('ז', "z"); put('ח', "kh");
+            put('ט', "t"); put('י', "y"); put('כ', "c"); put('ל', "l"); put('מ', "m"); put('נ', "n"); put('ס', "s");  put('ע', "'");
+            put('פ', "p"); put('צ', "ts"); put('ק', "k");  put('ר', "r"); put('ש', "sh"); put('ת', "th"); put('ף', "f"); put('ץ', "ts");
+            put('ך', "ch");put('ם', "m");put('ן', "n");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/IcelandicTransliterator.java

@@ -0,0 +1,31 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class IcelandicTransliterator extends SimpleTransliterator {
+    public IcelandicTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('Þ',"Th"); put('þ',"th"); put('Ð',"D"); put('ð',"d");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/KoreanTransliterator.java

@@ -14,16 +14,18 @@
 
     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>. */
-package nodomain.freeyourgadget.gadgetbridge.util;
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
 
 import java.util.Optional;
 import java.text.Normalizer;
 import java.text.Normalizer.Form;
 
+import nodomain.freeyourgadget.gadgetbridge.util.language.Transliterator;
+
 // Implements Revised Romanization of Korean as well as we can without understanding any grammar.
 //
 // https://en.wikipedia.org/wiki/Revised_Romanization_of_Korean
-public class KoreanLanguageUtils {
+public class KoreanTransliterator implements Transliterator {
     // https://en.wikipedia.org/wiki/Hangul_Jamo_%28Unicode_block%29
     private static final char JAMO_BLOCK_START = 0x1100;
     private static final char JAMO_BLOCK_END = 0x11FF;
@@ -282,7 +284,8 @@ public class KoreanLanguageUtils {
     }
 
     // Transliterate any Hangul in the given string. Leaves any non-Hangul characters unmodified.
-    public static String transliterate(String txt) {
+    @Override
+    public String transliterate(String txt) {
         if (txt == null || txt.isEmpty()) {
             return txt;
         }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/LithuanianTransliterator.java

@@ -0,0 +1,31 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class LithuanianTransliterator extends SimpleTransliterator {
+    public LithuanianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ą', "a"); put('č', "c"); put('ę', "e"); put('ė', "e"); put('į', "i"); put('š', "s"); put('ų', "u"); put('ū', "u"); put('ž', "z");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/PersianTransliterator.java

@@ -0,0 +1,35 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class PersianTransliterator extends SimpleTransliterator {
+    public PersianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            // Persian (Farsi)
+            put('پ', "p"); put('چ', "ch"); put('ژ', "zh"); put('ک', "k"); put('گ', "g"); put('ی', "y"); put('‌', " ");
+            put('؟', "?"); put('٪', "%"); put('؛', ";"); put('،', ","); put('۱', "1"); put('۲', "2"); put('۳', "3");
+            put('۴', "4"); put('۵', "5"); put('۶', "6"); put('۷', "7"); put('۸', "8"); put('۹', "9"); put('۰', "0");
+            put('»', "<"); put('«', ">"); put('ِ', "e"); put('َ', "a"); put('ُ', "o"); put('ّ', "");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/PolishTransliterator.java

@@ -0,0 +1,32 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class PolishTransliterator extends SimpleTransliterator {
+    public PolishTransliterator() {
+        super(new HashMap<Character, String>() {{
+            // Polish
+            put('Ł', "L"); put('ł', "l");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/RussianTransliterator.java

@@ -0,0 +1,37 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class RussianTransliterator extends SimpleTransliterator {
+    public RussianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('а', "a"); put('б', "b"); put('в', "v");  put('г', "g"); put('д', "d"); put('е', "e"); put('ё', "jo"); put('ж', "zh");
+            put('з', "z"); put('и', "i"); put('й', "jj"); put('к', "k"); put('л', "l"); put('м', "m"); put('н', "n");  put('о', "o");
+            put('п', "p"); put('р', "r"); put('с', "s");  put('т', "t"); put('у', "u"); put('ф', "f"); put('х', "kh"); put('ц', "c");
+            put('ч', "ch");put('ш', "sh");put('щ', "shh");put('ъ', "\"");put('ы', "y"); put('ь', "'"); put('э', "eh"); put('ю', "ju");
+            put('я', "ja");
+
+            put('õ', "o"); put('č', "c");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/ScandinavianTransliterator.java

@@ -0,0 +1,33 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class ScandinavianTransliterator extends SimpleTransliterator {
+    public ScandinavianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('Æ',"Ae"); put('æ',"ae");
+            put('Ø',"Oe"); put('ø',"oe");
+            put('Å',"Aa"); put('å',"aa");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/TurkishTransliterator.java

@@ -0,0 +1,31 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class TurkishTransliterator extends SimpleTransliterator {
+    public TurkishTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ı',"i");
+        }});
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/language/impl/UkranianTransliterator.java

@@ -0,0 +1,31 @@
+/*  Copyright (C) 2017-2022 Andreas Shimokawa, Aniruddha Adhikary, Daniele
+    Gobbetti, ivanovlev, kalaee, lazarosfs, McSym28, M. Hadi, Roi Greenberg,
+    Taavi Eomäe, Ted Stein, Thomas, Yaron Shahrabani, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.util.language.impl;
+
+import java.util.HashMap;
+
+import nodomain.freeyourgadget.gadgetbridge.util.language.SimpleTransliterator;
+
+public class UkranianTransliterator extends SimpleTransliterator {
+    public UkranianTransliterator() {
+        super(new HashMap<Character, String>() {{
+            put('ґ', "gh"); put('є', "je"); put('і', "i"); put('ї', "ji"); put('Ґ', "GH"); put('Є', "JE"); put('І', "I"); put('Ї', "JI");
+        }});
+    }
+}

app/src/main/res/values/arrays.xml

@@ -2278,5 +2278,47 @@
         <item>de.dennisguse.opentracks.nightly</item>
     </string-array>
 
-</resources>
+    <string-array name="pref_transliteration_languages">
+        <item>@string/arabic</item>
+        <item>@string/bengali</item>
+        <item>@string/czech</item>
+        <item>@string/estonian</item>
+        <item>@string/extended_ascii</item>
+        <item>@string/german</item>
+        <item>@string/greek</item>
+        <item>@string/hebrew</item>
+        <item>@string/icelandic</item>
+        <item>@string/korean</item>
+        <item>@string/lithuanian</item>
+        <item>@string/persian</item>
+        <item>@string/polish</item>
+        <item>@string/russian</item>
+        <item>@string/scandinavian</item>
+        <item>@string/turkish</item>
+        <item>@string/ukranian</item>
+    </string-array>
 
+    <string-array name="pref_transliteration_languages_values">
+        <item>arabic</item>
+        <item>bengali</item>
+        <item>czech</item>
+        <item>estonian</item>
+        <item>extended_ascii</item>
+        <item>german</item>
+        <item>greek</item>
+        <item>hebrew</item>
+        <item>icelandic</item>
+        <item>korean</item>
+        <item>lithuanian</item>
+        <item>persian</item>
+        <item>polish</item>
+        <item>russian</item>
+        <item>scandinavian</item>
+        <item>turkish</item>
+        <item>ukranian</item>
+    </string-array>
+
+    <string-array name="pref_transliteration_languages_default">
+        <!-- transliteration disabled by default -->
+    </string-array>
+</resources>

app/src/main/res/values/strings.xml

@@ -746,6 +746,15 @@
     <string name="spanish">Spanish</string>
     <string name="russian">Russian</string>
     <string name="german">German</string>
+    <string name="bengali">Bengali</string>
+    <string name="czech">Czech</string>
+    <string name="estonian">Estonian</string>
+    <string name="extended_ascii">Extended ASCII</string>
+    <string name="icelandic">Icelandic</string>
+    <string name="lithuanian">Lithuanian</string>
+    <string name="persian">Persian</string>
+    <string name="scandinavian">Scandinavian</string>
+    <string name="ukranian">Ukranian</string>
     <string name="italian">Italian</string>
     <string name="french">French</string>
     <string name="polish">Polish</string>

app/src/main/res/xml/devicesettings_transliteration.xml

@@ -1,9 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    <SwitchPreference
+    <com.mobeta.android.dslv.DragSortListPreference
-        android:defaultValue="false"
+        android:defaultValue="@array/pref_transliteration_languages_default"
-        android:key="pref_transliteration_enabled"
+        android:dialogTitle="@string/pref_title_transliteration"
+        android:entries="@array/pref_transliteration_languages"
+        android:entryValues="@array/pref_transliteration_languages_values"
         android:icon="@drawable/ic_translate"
+        android:key="pref_transliteration_languages"
+        android:persistent="true"
         android:summary="@string/pref_summary_transliteration"
         android:title="@string/pref_title_transliteration" />
-</androidx.preference.PreferenceScreen>
+</androidx.preference.PreferenceScreen>

app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/TestDeviceSupport.java

@@ -2,6 +2,7 @@ package nodomain.freeyourgadget.gadgetbridge.service;
 
 import android.bluetooth.BluetoothAdapter;
 import android.content.Context;
+import android.location.Location;
 import android.net.Uri;
 
 import java.util.ArrayList;
@@ -225,4 +226,8 @@ class TestDeviceSupport extends AbstractDeviceSupport {
     public void onPowerOff() {
 
     }
+
+    @Override public void onSetGpsLocation(Location location) {
+
+    }
 }

app/src/test/java/nodomain/freeyourgadget/gadgetbridge/util/language/LanguageUtilsTest.java

@@ -1,4 +1,4 @@
-package nodomain.freeyourgadget.gadgetbridge.test;
+package nodomain.freeyourgadget.gadgetbridge.util.language;
 
 import android.content.SharedPreferences;
 
@@ -6,14 +6,12 @@ import org.junit.Test;
 
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
-import nodomain.freeyourgadget.gadgetbridge.util.LanguageUtils;
+import nodomain.freeyourgadget.gadgetbridge.test.TestBase;
-import nodomain.freeyourgadget.gadgetbridge.util.KoreanLanguageUtils;
-import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNull;
-import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_ENABLED;
+import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_TRANSLITERATION_LANGUAGES;
 
 /**
  * Tests LanguageUtils
@@ -31,9 +29,11 @@ public class LanguageUtilsTest extends TestBase {
 
     @Test
     public void testStringTransliterateCyrillic() throws Exception {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("russian");
+
         // input with cyrillic and diacritic letters
         String input = "Прõсто текčт";
-        String output = LanguageUtils.transliterate(input);
+        String output = transliterator.transliterate(input);
         String result = "Prosto tekct";
 
         assertEquals("Transliteration failed", result, output);
@@ -41,8 +41,10 @@ public class LanguageUtilsTest extends TestBase {
 
     @Test
     public void testStringTransliterateHebrew() throws Exception {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("hebrew");
+
         String input = "בדיקה עברית";
-        String output = LanguageUtils.transliterate(input);
+        String output = transliterator.transliterate(input);
         String result = "bdykh 'bryth";
 
         assertEquals("Transliteration failed", result, output);
@@ -50,37 +52,48 @@ public class LanguageUtilsTest extends TestBase {
 
     @Test
     public void testStringTransliterateArabic() {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("arabic");
+
         String pangram = "نص حكيم له سر قاطع وذو شأن عظيم مكتوب على ثوب أخضر ومغلف بجلد أزرق";
         String pangramExpected = "n9 7kym lh sr qa63 wthw sh2n 36'ym mktwb 3la thwb 259'r wm3'lf bjld 2zrq";
-        String pangramActual = LanguageUtils.transliterate(pangram);
+        String pangramActual = transliterator.transliterate(pangram);
         assertEquals("Arabic pangram transliteration failed", pangramExpected, pangramActual);
 
         String taMarbutah = "ﺓ";
         String taMarbutahExpected = "";
-        String taMarbutahActual = LanguageUtils.transliterate(taMarbutah);
+        String taMarbutahActual = transliterator.transliterate(taMarbutah);
         assertEquals("ta marbutah transliteration failed", taMarbutahExpected, taMarbutahActual);
 
         String hamza = "ءأؤإئآ";
         String hamzaExpected = "222222";
-        String hamzaActual = LanguageUtils.transliterate(hamza);
+        String hamzaActual = transliterator.transliterate(hamza);
         assertEquals("hamza transliteration failed", hamzaExpected, hamzaActual);
 
         String easternArabicNumeralsArabic = "٠١٢٣٤٥٦٧٨٩";
-        String easternArabicNumeralsFarsi = "۰۱۲۳۴۵۶۷۸۹";
         String easternArabicNumeralsExpected = "0123456789";
         assertEquals("Eastern Arabic numerals (Arabic) failed", easternArabicNumeralsExpected,
-                LanguageUtils.transliterate(easternArabicNumeralsArabic));
+                transliterator.transliterate(easternArabicNumeralsArabic));
-        assertEquals("Eastern Arabic numerals (Farsi) failed", easternArabicNumeralsExpected,
+    }
-                LanguageUtils.transliterate(easternArabicNumeralsFarsi));
+
+    public void testStringTransliteratePersian() {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("persian");
 
         String farsi = "گچپژ";
         String farsiExpected = "gchpzh";
-        String farsiActual = LanguageUtils.transliterate(farsi);
+        String farsiActual = transliterator.transliterate(farsi);
         assertEquals("Farsi transiteration failed", farsiExpected, farsiActual);
+
+        String easternArabicNumeralsFarsi = "۰۱۲۳۴۵۶۷۸۹";
+        String easternArabicNumeralsExpected = "0123456789";
+
+        assertEquals("Eastern Arabic numerals (Farsi) failed", easternArabicNumeralsExpected,
+                transliterator.transliterate(easternArabicNumeralsFarsi));
     }
 
     @Test
     public void testStringTransliterateBengali() throws Exception {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("bengali");
+
         // input with cyrillic and diacritic letters
         String[] inputs = { "অনিরুদ্ধ", "বিজ্ঞানযাত্রা চলছে চলবে।", "আমি সব দেখেশুনে ক্ষেপে গিয়ে করি বাঙলায় চিৎকার!",
                 "আমার জাভা কোড is so bad! কী আর বলবো!" };
@@ -91,17 +104,19 @@ public class LanguageUtilsTest extends TestBase {
         String result;
 
         for (int i = 0; i < inputs.length; i++) {
-            result = LanguageUtils.transliterate(inputs[i]);
+            result = transliterator.transliterate(inputs[i]);
             assertEquals("Transliteration failed", outputs[i], result);
         }
     }
 
     @Test
     public void testStringTransliterateKorean() {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("korean");
+
         // A familiar phrase with no special provisions.
         String hello = "안녕하세요";
         String helloExpected = "annyeonghaseyo";
-        String helloActual = LanguageUtils.transliterate(hello);
+        String helloActual = transliterator.transliterate(hello);
         assertEquals("Korean hello transliteration failed", helloExpected, helloActual);
 
         // Korean pangram. Includes some ASCII punctuation which should not be changed by
@@ -111,67 +126,65 @@ public class LanguageUtilsTest extends TestBase {
         // you complaining again?"
         String pangram = "\"웬 초콜릿? 제가 원했던 건 뻥튀기 쬐끔과 의류예요.\" \"얘야, 왜 또 불평?\"";
         String pangramExpected = "\"wen chokollit? jega wonhaetdeon geon ppeongtwigi jjoekkeumgwa uiryuyeyo.\" \"yaeya, wae tto bulpyeong?\"";
-        String pangramActual = LanguageUtils.transliterate(pangram);
+        String pangramActual = transliterator.transliterate(pangram);
         assertEquals("Korean pangram transliteration failed", pangramExpected, pangramActual);
 
         // Several words excercising special provisions, from Wikipedia.
         String special = "좋고, 놓다, 잡혀, 낳지";
         String specialExpected = "joko, nota, japhyeo, nachi";
-        String specialActual = LanguageUtils.transliterate(special);
+        String specialActual = transliterator.transliterate(special);
         assertEquals("Korean special provisions transliteration failed", specialExpected, specialActual);
 
         // Isolated jamo.
         String isolatedJamo = "ㅋㅋㅋ";
         String isolatedJamoExpected = "kkk";
-        String isolatedJamoActual = LanguageUtils.transliterate(isolatedJamo);
+        String isolatedJamoActual = transliterator.transliterate(isolatedJamo);
         assertEquals("Korean isolated jamo transliteration failed", isolatedJamoExpected, isolatedJamoActual);
 
         // Korean transliteration shouldn't touch non-Hangul composites.
         String german = "schön";
         String germanExpected = german;
-        String germanActual = KoreanLanguageUtils.transliterate(german);
+        String germanActual = transliterator.transliterate(german);
         assertEquals("Korean transliteration modified a non-Hangul composite", germanExpected, germanActual);
     }
 
     @Test
     public void testStringTransliterateLithuanian() {
+        final Transliterator transliterator = LanguageUtils.getTransliterator("lithuanian");
+
         String input = "ą č ę ė į š ų ū ž";
-        String output = LanguageUtils.transliterate(input);
+        String output = transliterator.transliterate(input);
         String expected = "a c e e i s u u z";
         assertEquals("lithuanian translation failed", expected, output);
 
         input = "aąa cčc eęe eėe iįi sšs uųu uūu zžz";
-        output = LanguageUtils.transliterate(input);
+        output = transliterator.transliterate(input);
         expected = "aaa ccc eee eee iii sss uuu uuu zzz";
         assertEquals("lithuanian translation failed", expected, output);
     }
 
     @Test
     public void testTransliterateOption() throws Exception {
-        setDefaultTransliteration();
+        enableTransliteration(false);
-        assertFalse("Transliteration option fail! Expected 'Off' by default, but result is 'On'",
+        assertNull("Transliteration option fail! Expected 'Off' by default, but result is 'On'",
                 getTransliteration());
 
         enableTransliteration(true);
-        assertTrue("Transliteration option fail! Expected 'On', but result is 'Off'", getTransliteration());
+        assertNotNull("Transliteration option fail! Expected 'On', but result is 'Off'", getTransliteration());
-    }
-
-    private void setDefaultTransliteration() {
-        SharedPreferences devicePrefs = GBApplication.getDeviceSpecificSharedPrefs(dummyGBDevice.getAddress());
-        SharedPreferences.Editor editor = devicePrefs.edit();
-        editor.remove(PREF_TRANSLITERATION_ENABLED);
-        editor.apply();
     }
 
     private void enableTransliteration(boolean enable) {
         SharedPreferences devicePrefs = GBApplication.getDeviceSpecificSharedPrefs(dummyGBDevice.getAddress());
         SharedPreferences.Editor editor = devicePrefs.edit();
-        editor.putBoolean(PREF_TRANSLITERATION_ENABLED, enable);
+        if (enable) {
+            editor.putString(PREF_TRANSLITERATION_LANGUAGES, "extended_ascii,scandinavian,german,russian,hebrew,greek,ukranian,arabic,persian,lithuanian,polish,estonian,icelandic,czech,turkish,bengali,korean");
+        } else {
+            editor.remove(PREF_TRANSLITERATION_LANGUAGES);
+        }
         editor.apply();
     }
 
-    private boolean getTransliteration(){
+    private Transliterator getTransliteration() {
-        Prefs devicePrefs = new Prefs(GBApplication.getDeviceSpecificSharedPrefs(dummyGBDevice.getAddress()));
+        return LanguageUtils.getTransliterator(dummyGBDevice);
-        return devicePrefs.getBoolean(PREF_TRANSLITERATION_ENABLED, false);
     }
 }