UTF8Encoder.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_UTF8Encoder_hxx
#define __ccxx_UTF8Encoder_hxx

#include <commonc++/Common.h++>

namespace ccxx {

class COMMONCPP_API UTF8Encoder
{
 public:

  UTF8Encoder();

  ~UTF8Encoder();

  int encode(const char16_t** input, int* inputCountLeft,
             char** output, int* outputCountLeft);

  void reset();

  static int encodedLength(const char16_t* input, int length,
                           int maxLength = 0);

  static const int STATUS_OK;

  static const int STATUS_NEED_MORE_INPUT;

  static const int STATUS_OUTPUT_BUFFER_FULL;

  static const int STATUS_INVALID_INPUT;

 private:

  int outputChar(uint32_t char32, char** buf, int* length);

  char16_t _surrogate;

  CCXX_COPY_DECLS(UTF8Encoder);
};

} // namespace ccxx

#endif // __ccxx_UTF8Encoder_hxx