itkStdStreamStateSave.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed 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
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  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 itkStdStreamStateSave_h
#define itkStdStreamStateSave_h
 
#include <iostream>
#include <string>
#include "itkMacro.h"
 
namespace itk
{
class StdStreamStateSave
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(StdStreamStateSave);
 
  explicit StdStreamStateSave(std::ios & stream)
    : m_Ios(stream)
    , m_State(nullptr)
  {
    m_State.copyfmt(stream);
  }
  ~StdStreamStateSave() { m_Ios.copyfmt(m_State); }
 
private:
  std::ios & m_Ios;
  std::ios   m_State;
};
} // namespace itk
 
#endif