Issue 4030 - Move JNI bindings into separate library project

jni/Utils.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
- * 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 Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <string>
-
-#include "Utils.h"
-
-std::string JniJavaToStdString(JNIEnv* env, jstring str)
-{
-  if (!str)
-  {
-    return std::string();
-  }
-
-  const char* cStr = env->GetStringUTFChars(str, 0);
-  std::string ret(cStr);
-  env->ReleaseStringUTFChars(str, cStr);
-
-  return ret;
-}
-
-jobject NewJniArrayList(JNIEnv* env)
-{
-  JniLocalReference<jclass> clazz(env, env->FindClass("java/util/ArrayList"));
-  jmethodID ctor = env->GetMethodID(*clazz, "<init>", "()V");
-  return env->NewObject(*clazz, ctor);
-}
-
-void JniAddObjectToList(JNIEnv* env, jobject list, jobject value)
-{
-  JniLocalReference<jclass> clazz(env, env->GetObjectClass(list));
-  jmethodID add = env->GetMethodID(*clazz, "add", "(Ljava/lang/Object;)Z");
-  env->CallBooleanMethod(list, add, value);
-}
-
-void JniThrowException(JNIEnv* env, const std::string& message)
-{
-  JniLocalReference<jclass> clazz(env,
-      env->FindClass(PKG("AdblockPlusException")));
-  env->ThrowNew(*clazz, message.c_str());
-}
-
-void JniThrowException(JNIEnv* env, const std::exception& e)
-{
-  JniThrowException(env, e.what());
-}
-
-void JniThrowException(JNIEnv* env)
-{
-  JniThrowException(env, "Unknown exception from libadblockplus");
-}
-
-JNIEnvAcquire::JNIEnvAcquire(JavaVM* javaVM)
-  : javaVM(javaVM), jniEnv(0), attachmentStatus(0)
-{
-  attachmentStatus = javaVM->GetEnv((void **)&jniEnv, ABP_JNI_VERSION);
-  if (attachmentStatus == JNI_EDETACHED)
-  {
-    if (javaVM->AttachCurrentThread(&jniEnv, 0))
-    {
-      // This one is FATAL, we can't recover from this (because without a JVM we're dead), so
-      // throwing a runtime_exception in a ctor can be tolerated here IMHO
-      throw std::runtime_error("Failed to get JNI environment");
-    }
-  }
-}
-
-JNIEnvAcquire::~JNIEnvAcquire()
-{
-  if (attachmentStatus == JNI_EDETACHED)
-  {
-    javaVM->DetachCurrentThread();
-  }
-}
-
-template<typename T>
-static jobject NewJniObject(JNIEnv* env, const T& value, const char* javaClass)
-{
-  if (!value.get())
-  {
-    return 0;
-  }
-
-  JniLocalReference<jclass> clazz(
-      env,
-      env->FindClass(javaClass));
-  jmethodID method = env->GetMethodID(*clazz, "<init>", "(J)V");
-
-  return env->NewObject(
-      *clazz,
-      method,
-      JniPtrToLong(new T(value)));
-}
-
-jobject NewJniFilter(JNIEnv* env, const AdblockPlus::FilterPtr& filter)
-{
-  return NewJniObject(env, filter, PKG("Filter"));
-}
-
-jobject NewJniSubscription(JNIEnv* env,
-    const AdblockPlus::SubscriptionPtr& subscription)
-{
-  return NewJniObject(env, subscription, PKG("Subscription"));
-}
-
-jobject NewJniNotification(JNIEnv* env,
-    const AdblockPlus::NotificationPtr& notification)
-{
-  return NewJniObject(env, notification, PKG("Notification"));
-}