base64_file_writer.h

Go to the documentation of this file.

/*
 * Copyright (c) 2013-2015:  G-CSC, Goethe University Frankfurt
 * Authors: Torbjoern Klatt, Martin Scherer
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 */
 
#ifndef __H__UG__COMMON__UTIL__BASE64_FILE_WRITER__
#define __H__UG__COMMON__UTIL__BASE64_FILE_WRITER__
 
#include <sstream>
#include <fstream>
#include <vector>
 
namespace ug {
 
 
class Base64FileWriter {
public:
 
  enum fmtflag {
    base64_ascii,
    base64_binary,
    normal
  };
 
  Base64FileWriter();
 
  Base64FileWriter(const char* filename,
        const std::ios_base::openmode mode = (std::ios_base::out |
                            std::ios_base::trunc));
 
  ~Base64FileWriter();
 
public:
 
  void open(const char *filename,
      const std::ios_base::openmode mode = std::ios_base::out );
 
  fmtflag format() const;
 
  void close();
 
  Base64FileWriter& operator<<(const fmtflag format);
 
  // insert plain standard types to this filewriter
  Base64FileWriter& operator<<(int i);
  Base64FileWriter& operator<<(char c);
  Base64FileWriter& operator<<(const char* cstr);
  Base64FileWriter& operator<<(const std::string& str);
 
  Base64FileWriter& operator<<(float f);
  Base64FileWriter& operator<<(double d);
  Base64FileWriter& operator<<(long l);
  Base64FileWriter& operator<<(size_t s);
 
private:
  template <typename T>
  void dispatch(const T& value);
 
  std::fstream m_fStream;
  fmtflag m_currFormat;
  std::stringstream m_inBuffer;
 
  /*
   * input byte size during a format block
   */
  size_t m_lastInputByteSize;
 
  std::vector<char> m_tmpBuff;
 
  size_t m_numBytesWritten;
 
  void flushInputBuffer(bool force = false);
 
  inline void assertFileOpen();
};
 
// end group ugbase_common_io
 
} // namespace: ug
 
#endif // __H__UG__COMMON__UTIL__BASE64_FILE_WRITER__