/*
 *  Baltisot
 *  Copyright (C) 1999-2007 Nicolas "Pixel" Noble
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: Buffer.h,v 1.24 2008-01-21 17:55:43 pixel Exp $ */

#ifndef __BUFFER_H__
#define __BUFFER_H__

#include <zlib.h>
#include <Exceptions.h>
#include <Handle.h>

#ifndef realloc_threshold
#define realloc_threshold 256
#endif

class Buffer : public Handle {
  public:
      Buffer(bool seekable = false);
      Buffer(const Buffer &);
      virtual ~Buffer();
    virtual ssize_t write(const void *buf, size_t count) throw(GeneralException);
    virtual ssize_t read(void *buf, size_t count) throw (GeneralException);
    virtual bool CanRead() const;
    virtual bool CanWrite() const;
    virtual String GetName() const;
    virtual Buffer operator=(const Buffer &);
    virtual bool CanWatch() const;
    virtual ssize_t GetSize() const;
    virtual ssize_t GetRemaining() const;
    virtual bool CanSeek() const;
    virtual off_t seek(off_t, int = SEEK_SET) throw (GeneralException);
    virtual off_t tell() const;
    Byte operator[](size_t) const;
    Byte & operator[](size_t);
    off_t wseek(off_t, int = SEEK_SET) throw (GeneralException);
    off_t wtell() const;
    void reset();
    const Byte * GetBuffer() const;
    static int GetNbBuffer();

  private:
    Byte * buffer, zero;
    size_t realsiz, bufsiz, ptr, wptr;
    bool seekable;
    bool got_eof;
    static int nb_buffer;
};

#endif