add i2pd multilingual support

Signed-off-by: R4SAS <r4sas@i2pmail.org>

app/src/main/java/org/purplei2p/i2pd/DaemonWrapper.java

@@ -10,6 +10,7 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.Locale;
 
 import android.annotation.TargetApi;
 import android.content.res.AssetManager;
@@ -31,6 +32,8 @@ public class DaemonWrapper {
     private String i2pdpath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/i2pd/";
     private boolean assetsCopied;
 
+    private static final String appLocale = Locale.getDefault().getDisplayLanguage(Locale.ENGLISH).toLowerCase(); // lower-case system language (like "english")
+
     public interface StateUpdateListener {
         void daemonStateUpdate(State oldValue, State newValue);
     }
@@ -184,7 +187,11 @@ public class DaemonWrapper {
             }
             try {
                 synchronized (DaemonWrapper.this) {
-                    I2PD_JNI.setDataDir(i2pdpath);//(Environment.getExternalStorageDirectory().getAbsolutePath() + "/i2pd");
+                    I2PD_JNI.setDataDir(i2pdpath); // (Environment.getExternalStorageDirectory().getAbsolutePath() + "/i2pd");
+
+                    Log.d(TAG, "setting webconsole language to " + appLocale);
+                    I2PD_JNI.setLanguage(appLocale);
+
                     daemonStartResult = I2PD_JNI.startDaemon();
                     if ("ok".equals(daemonStartResult)) {
                         setState(State.startedOkay);

app/src/main/java/org/purplei2p/i2pd/I2PD_JNI.java

@@ -26,6 +26,8 @@ public class I2PD_JNI {
 
     public static native String getWebConsAddr();
 
+    public static native void setLanguage(String jlanguage);
+
     public static void loadLibraries() {
         //System.loadLibrary("c++_shared");
         System.loadLibrary("i2pd");