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include/id3/writer.h

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// -*- C++ -*-
// $Id: writer.h,v 1.6 2001/07/30 18:22:53 abscess Exp $

// id3lib: a software library for creating and manipulating id3v1/v2 tags
// Copyright 1999, 2000  Scott Thomas Haug

// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

// The id3lib authors encourage improvements and optimisations to be sent to
// the id3lib coordinator.  Please see the README file for details on where to
// send such submissions.  See the AUTHORS file for a list of people who have
// contributed to id3lib.  See the ChangeLog file for a list of changes to
// id3lib.  These files are distributed with id3lib at
// http://download.sourceforge.net/id3lib/

#ifndef _ID3LIB_WRITER_H_
#define _ID3LIB_WRITER_H_

#include <id3/globals.h>

class ID3_CPP_EXPORT ID3_Writer
{
 public:
  typedef uint32 size_type;
  typedef uint8  char_type;
  typedef uint32 pos_type;
  typedef  int32 off_type;
  typedef  int16 int_type;
  static const int_type END_OF_WRITER;
  
  virtual void close() = 0;

  virtual void flush() = 0;

  virtual pos_type getBeg() { return static_cast<pos_type>(0); }

  virtual pos_type getEnd() { return static_cast<pos_type>(-1); }

  virtual pos_type getCur() = 0;

  virtual size_type getSize() { return this->getCur() - this->getBeg(); }

  virtual size_type getMaxSize() { return this->getEnd() - this->getBeg(); }

  virtual int_type writeChar(char_type ch) 
  {
    if (this->atEnd())
    { 
      return END_OF_WRITER; 
    }
    this->writeChars(&ch, 1);
    return ch;
  }

  virtual size_type writeChars(const char_type buf[], size_type len) = 0;
  virtual size_type writeChars(const char buf[], size_type len)
  {
    return this->writeChars(reinterpret_cast<const char_type *>(buf), len);
  }

  virtual bool atEnd()
  {
    return this->getCur() >= this->getEnd();
  }
};

#endif /* _ID3LIB_WRITER_H_ */

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