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base.LexicalFormatter.h

/*----------------------------------------------------------------------------
  SWORD 2000 - Software With Objects for Rapid Development
  Copyright (C) 2003 Eric NICOLAS
  ----------------------------------------------------------------------------
  SWORD is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  SWORD 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.

  You should have received a copy of the GNU Lesser General Public License
  along with SWORD; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  --------------------------------------------------------------------------*/
#ifndef _SWORD_BASE_LEXICALFORMATTER_
#define _SWORD_BASE_LEXICALFORMATTER_

namespace sword {


  class LexicalFormatter {
  public:
    LexicalFormatter();
    explicit LexicalFormatter(const char *format);
    explicit LexicalFormatter(const std::string& format);

    const char *parseFormat(const char *format);

    // getting size for the formatter's buffer
    inline word  width_int    (int    value) const;
    inline word  width_word   (word   value) const;
    inline word  width_int64  (int64  value) const;
    inline word  width_word64 (word64 value) const;

    // using the formatter
    inline char *format_int   (int    value, char *buffer, word bufferLen) const;
    inline char *format_word  (word   value, char *buffer, word bufferLen) const;
    inline char *format_int64 (int64  value, char *buffer, word bufferLen) const;
    inline char *format_word64(word64 value, char *buffer, word bufferLen) const;

  private:
    char *(*formatter_word_  )(word   value, word width, word precision, char *buffer, word bufferLen);
    char *(*formatter_int_   )(int    value, word width, word precision, char *buffer, word bufferLen);
    char *(*formatter_word64_)(word64 value, word width, word precision, char *buffer, word bufferLen);
    char *(*formatter_int64_ )(int64  value, word width, word precision, char *buffer, word bufferLen);
    word width_;
    word precision_;
  };

  class LexicalFormatterException : public Exception {};

  template<class SOURCE>
  class LexicalFormatterActor {
  public:
    static word  width (const LexicalFormatter& f, SOURCE source);
    static char *format(const LexicalFormatter& f, SOURCE source, char *buffer, word bufferLen);
  };

} // namespace sword

#include "sword.private/base.LexicalFormatter.inl"

#endif // _SWORD_BASE_LEXICALFORMATTER_

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