/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses 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 _LOG4CXX_HELPERS_READER_H
#define _LOG4CXX_HELPERS_READER_H

#include <log4cxx/helpers/objectimpl.h>

namespace log4cxx
{

        namespace helpers {

          /**
           * Abstract class for reading from character streams.
           * 
           */
          class LOG4CXX_EXPORT Reader : public ObjectImpl
          {
          public:
                  DECLARE_ABSTRACT_LOG4CXX_OBJECT(Reader)
                  BEGIN_LOG4CXX_CAST_MAP()
                          LOG4CXX_CAST_ENTRY(Reader)
                  END_LOG4CXX_CAST_MAP()

          protected:
                  /**
                   * Creates a new character-stream reader.
                   */
                  Reader();

                  virtual ~Reader();

          public:
                  /**
                   * Closes the stream.
                   * @param p The memory pool associated with the reader.
                   */
                  virtual void close(Pool& p) = 0;

                  /**
                   * @return The complete stream contents as a LogString.
                   * @param p The memory pool associated with the reader.
                   */
                  virtual LogString read(Pool& p) = 0;

          private:
                  Reader(const Reader&);

                  Reader& operator=(const Reader&);
          };

          LOG4CXX_PTR_DEF(Reader);
        } // namespace helpers

}  //namespace log4cxx

#endif //_LOG4CXX_HELPERS_READER_H