tdeiobuffer.h

/*
 *  Copyright (C) 2003 Thiago Macieira <thiago.macieira@kdemail.net>
 *
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included 
 *  in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
#ifndef TDEIOBUFFER_H
#define TDEIOBUFFER_H
 
#include <tqcstring.h>
 
#include <tdelibs_export.h>
 
class TQIODevice;
 
class TDEIOBufferBase
{
public:
  TDEIOBufferBase()
  { }
 
  TDEIOBufferBase(const TDEIOBufferBase& )
  { }
 
  virtual ~TDEIOBufferBase()
  { }
 
  TDEIOBufferBase& operator=(const TDEIOBufferBase& )
  { return *this; }
 
  virtual bool canReadLine() const = 0;
 
  virtual TQCString readLine() = 0;
 
  virtual TQ_LONG length() const = 0;
 
  inline bool isEmpty() const
  { return length() == 0; }
 
  virtual TQ_LONG size() const = 0;
 
  inline bool isFull() const
  { return size() != -1 && size() == length(); }
 
  virtual bool setSize(TQ_LONG size) = 0;
 
  virtual TQ_LONG feedBuffer(const char *data, TQ_LONG len) = 0;
 
  virtual TQ_LONG consumeBuffer(char *data, TQ_LONG maxlen, bool discard = true) = 0;
 
  virtual void clear() = 0;
};
 
#endif