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 * Distributed under the OSI-approved Apache License, Version 2.0.  See
 * accompanying file Copyright.txt for details.
 *
 * CFStream.cpp
 *
 *  Created on: Oct 24, 2016
 *      Author: wfg
 */

/// \cond EXCLUDED_FROM_DOXYGEN
#include <stdexcept>
/// \endcond

#include "transport/file/FStream.h"

namespace adios
{
namespace transport
{

FStream::FStream(MPI_Comm mpiComm, const bool debugMode)
    : Transport("fstream", mpiComm, debugMode)
{
}

FStream::~FStream() {}

void FStream::Open(const std::string name, const std::string accessMode)
{
  m_Name = name;
  m_AccessMode = accessMode;

  if (accessMode == "w" || accessMode == "write")
    m_FStream.open(name, std::fstream::out);

  else if (accessMode == "a" || accessMode == "append")
    m_FStream.open(name, std::fstream::out | std::fstream::app);

  else if (accessMode == "r" || accessMode == "read")
    m_FStream.open(name, std::fstream::in);

  if (m_DebugMode == true)
  {
    if (!m_FStream)
      throw std::ios_base::failure(
          "ERROR: couldn't open file " + name +
          ", in call to Open from FStream transport\n");
  }
}

void FStream::SetBuffer(char *buffer, std::size_t size)
{
  m_FStream.rdbuf()->pubsetbuf(buffer, size);
}

void FStream::Write(const char *buffer, std::size_t size)
{
  m_FStream.write(buffer, size);

  if (m_DebugMode == true)
  {
    if (!m_FStream)
      throw std::ios_base::failure("ERROR: couldn't write to file " + m_Name +
                                   ", in call to FStream write\n");
  }
}

void FStream::Flush() { m_FStream.flush(); }

void FStream::Close() { m_FStream.close(); }

} // end namespace transport
} // end namespace