Issue 4399 - Add WebView inheritor with ad blocking

libadblockplus-android/jni/JniFilterEngine.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 397 matching lines @@
   std::string pref = JniJavaToStdString(env, jPref);
   AdblockPlus::JsValuePtr value = JniGetJsValuePtr(jsValue);
 
   try
   {
     engine->SetPref(pref, value);
   }
   CATCH_AND_THROW(env)
 }
 
+static jstring JNICALL JniGetHostFromURL(JNIEnv* env, jclass clazz, jlong ptr, jstring jurl)
+{
+  if (jurl == NULL)
+  {
+    return NULL;
+  }
+
+  AdblockPlus::FilterEngine* engine = JniLongToTypePtr<AdblockPlus::FilterEngine>(ptr);
+
+  std::string url = JniJavaToStdString(env, jurl);
+  try
+  {
+    std::string host = engine->GetHostFromURL(url);
+
+    return JniStdStringToJava(env, host);
+  }
+  CATCH_THROW_AND_RETURN(env, 0)
+}
+
 static JNINativeMethod methods[] =
 {
   { (char*)"ctor", (char*)"(J)J", (void*)JniCtor },
   { (char*)"isFirstRun", (char*)"(J)Z", (void*)JniIsFirstRun },
   { (char*)"getFilter", (char*)"(JLjava/lang/String;)" TYP("Filter"), (void*)JniGetFilter },
   { (char*)"getListedFilters", (char*)"(J)Ljava/util/List;", (void*)JniGetListedFilters },
   { (char*)"getSubscription", (char*)"(JLjava/lang/String;)" TYP("Subscription"), (void*)JniGetSubscription },
   { (char*)"showNextNotification", (char*)"(JLjava/lang/String;)V", (void*)JniShowNextNotification },
   { (char*)"setShowNotificationCallback", (char*)"(JJ)V", (void*)JniSetShowNotificationCallback },
   { (char*)"removeShowNotificationCallback", (char*)"(J)V", (void*)JniRemoveShowNotificationCallback },
   { (char*)"getListedSubscriptions", (char*)"(J)Ljava/util/List;", (void*)JniGetListedSubscriptions },
   { (char*)"fetchAvailableSubscriptions", (char*)"(J)Ljava/util/List;", (void*)JniFetchAvailableSubscriptions },
   { (char*)"setUpdateAvailableCallback", (char*)"(JJ)V", (void*)JniSetUpdateAvailableCallback },
   { (char*)"removeUpdateAvailableCallback", (char*)"(J)V", (void*)JniRemoveUpdateAvailableCallback },
   { (char*)"setFilterChangeCallback", (char*)"(JJ)V", (void*)JniSetFilterChangeCallback },
   { (char*)"removeFilterChangeCallback", (char*)"(J)V", (void*)JniRemoveFilterChangeCallback },
   { (char*)"forceUpdateCheck", (char*)"(JJ)V", (void*)JniForceUpdateCheck },
   { (char*)"getElementHidingSelectors", (char*)"(JLjava/lang/String;)Ljava/util/List;", (void*)JniGetElementHidingSelectors },
   { (char*)"matches", (char*)"(JLjava/lang/String;" TYP("FilterEngine$ContentType") "Ljava/lang/String;)" TYP("Filter"), (void*)JniMatches },
   { (char*)"matches", (char*)"(JLjava/lang/String;" TYP("FilterEngine$ContentType") "[Ljava/lang/String;)" TYP("Filter"), (void*)JniMatchesMany },
   { (char*)"isDocumentWhitelisted", (char*)"(JLjava/lang/String;[Ljava/lang/String;)Z", (void*)JniIsDocumentWhitelisted },
   { (char*)"isElemhideWhitelisted", (char*)"(JLjava/lang/String;[Ljava/lang/String;)Z", (void*)JniIsElemhideWhitelisted },
   { (char*)"getPref", (char*)"(JLjava/lang/String;)" TYP("JsValue"), (void*)JniGetPref },
   { (char*)"setPref", (char*)"(JLjava/lang/String;J)V", (void*)JniSetPref },
+  { (char*)"getHostFromURL", (char*)"(JLjava/lang/String;)Ljava/lang/String;", (void*)JniGetHostFromURL },
   { (char*)"dtor", (char*)"(J)V", (void*)JniDtor }
 };
 
 extern "C" JNIEXPORT void JNICALL Java_org_adblockplus_libadblockplus_FilterEngine_registerNatives(JNIEnv *env, jclass clazz)
 {
   env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0]));
 }