text: /*
   * Copyright (c) 2018 Elastos Foundation
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef __JNI_UTILS_H__
  #define __JNI_UTILS_H__
  
  #include <jni.h>
  
  #define ARG(ctxt, index, type, value)  type value = (type) ((void**)ctxt)[index]
  
  #define _J(type)  "Ljava/lang/"type
  #define _W(type)  "Lorg/elastos/carrier/"type
  #define _S(type)  "Lorg/elastos/carrier/session/"type
  #define _F(type)  "Lorg/elastos/carrier/filetransfer/"type
  
  void setErrorCode(int errno);
  int _getErrorCode(void);
  
  void setJvm(JavaVM* vm);
  
  JNIEnv* attachJvm(int* newlyAttached);
  void detachJvm(JNIEnv* env, int needDetach);
  
  jclass findClass(JNIEnv* env, const char* className);
  
  int registerNativeMethods(JNIEnv* env,
          const char* clazzName,
          JNINativeMethod* methods,
          int nMethods
      );
  
  int callVoidMethod(JNIEnv* env,
          jclass jclazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          ...
      );
  
  int callIntMethod(JNIEnv* env,
          jclass clazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          jint* result,
          ...
      );
  
  int callLongMethod(JNIEnv *env,
          jclass jclazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          jlong* result,
          ...
      );
  
  int callBooleanMethod(JNIEnv* env,
          jclass clazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          jboolean* result,
          ...
      );
  
  int callStringMethod(JNIEnv* env,
          jclass clazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          jobject* result,
          ...
      );
  
  int callObjectMethod(JNIEnv* env,
          jclass clazz,
          jobject jobj,
          const char* methodName,
          const char* sig,
          jobject* result,
          ...
      );
  
  int callStaticObjectMethod(JNIEnv* env,
          jclass clazz,
          const char* methodName,
          const char* sig,
          jobject* result,
          ...
      );
  
  #endif