text: /*
   * Copyright 2013-2022 Step Function I/O, LLC
   *
   * Licensed to Green Energy Corp (www.greenenergycorp.com) and Step Function I/O
   * LLC (https://stepfunc.io) under one or more contributor license agreements.
   * See the NOTICE file distributed with this work for additional information
   * regarding copyright ownership. Green Energy Corp and Step Function I/O LLC license
   * this file to you under the Apache License, Version 2.0 (the "License"); you
   * may not use this file except in compliance with the License. You may obtain
   * a copy of the License at:
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef OPENDNP3_CSTRING_H
  #define OPENDNP3_CSTRING_H
  
  #include <opendnp3/util/Uncopyable.h>
  
  #include <jni.h>
  
  #include <string>
  
  #include "../adapters/LocalRef.h"
  
  // RAII class for java <=> cstring
  class CString : private opendnp3::Uncopyable
  {
      JNIEnv* env;
      JString jstr;
      const char* cstr;
  
  public:
      CString(JNIEnv* env, JString jstr) : env(env), jstr(jstr), cstr(env->GetStringUTFChars(jstr, nullptr)) {}
  
      ~CString()
      {
          env->ReleaseStringUTFChars(jstr, cstr);
      }
  
      std::string str() const
      {
          return std::string(cstr);
      }
  
      operator const char*() const
      {
          return cstr;
      }
  };
  
  #endif
  