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/***************************************************************************
kplainbuffer.h - description
-------------------
begin : Mit Jun 03 2003
copyright : (C) 2003 by Friedrich W. H. Kossebau
email : Friedrich.W.H@Kossebau.de
***************************************************************************/
/***************************************************************************
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License version 2 as published by the Free Software Foundation. *
* *
***************************************************************************/
#ifndef KHE_KPLAINBUFFER_H
#define KHE_KPLAINBUFFER_H
#include "kdatabuffer.h"
namespace KHE
{
/*
class KPlainBufferIterator : public KDataBufferIterator
{
}
*/
/** base class for all Data buffers that are used to display
* TODO: think about a way to inform KHexEdit that there has been
* a change in the buffer outside. what kind of changes are possible?
*@author Friedrich W. H. Kossebau
*/
class KPlainBuffer : public KDataBuffer
{
friend class KPlainBufferIterator;
public:
KPlainBuffer( char *D, unsigned int S, int RS = -1, bool KM = true );
KPlainBuffer( const char *D, unsigned int S );
KPlainBuffer( int S=0, int MS = -1 );
virtual ~KPlainBuffer();
public: // KDataBuffer API
virtual bool prepareRange( KSection Range ) const;
//virtual KDataBufferIterator *iterator() const;
virtual const char *dataSet( KSection S ) const;
virtual char datum( unsigned int Offset ) const;
virtual int size() const;
virtual bool isReadOnly() const;
virtual bool isModified() const;
virtual int insert( int Pos, const char*, int Length );
virtual int remove( KSection Remove );
virtual unsigned int replace( KSection Remove, const char*, unsigned int InputLength );
virtual int move( int DestPos, KSection SourceSection );
virtual int fill( const char FillChar, int Length = -1, unsigned int Pos = 0 );
virtual void setDatum( unsigned int Offset, const char Char );
virtual void setModified( bool M = true );
//virtual int find( const char*, int Length, int Pos = 0 ) const;
virtual int find( const char*KeyData, int Length, KSection Section ) const;
virtual int rfind( const char*, int Length, int Pos = -1 ) const;
/* virtual int find( const QString &expr, bool cs, bool wo, bool forward = true, int *index = 0 ); */
public:
void setReadOnly( bool RO = true );
void setMaxSize( int MS );
/** sets whether the memory given by setData or in the constructor should be kept on resize
*/
void setKeepsMemory( bool KM = true );
public:
char *data() const;
int maxSize() const;
/** returns whether the memory of the byte array is kept */
bool keepsMemory() const;
protected:
/** resizes the buffer, if possible, saving the data and splitting the data, if demanded
* @param AddSize additional size the buffer should grow
* @param SplitPos if -1 does not split
* @param SaveUpperPart true if upper part should be copied into new buffer
* @return additional size the buffer has grown
*/
int addSize( int AddSize, int SplitPos = -1, bool SaveUpperPart = true );
protected:
/** */
char *Data;
/** size of the data */
unsigned int Size;
/** Size of data array */
unsigned int RawSize;
/** maximal size of array, unlimited if -1 */
int MaxSize;
/** flag whether the initially given memory should be kept */
bool KeepsMemory:1;
/** */
bool ReadOnly:1;
/** */
bool Modified:1;
};
inline bool KPlainBuffer::prepareRange( KSection ) const { return true; }
inline const char *KPlainBuffer::dataSet( KSection S ) const { return &Data[S.start()]; }
inline char KPlainBuffer::datum( unsigned int Offset ) const { return Data[Offset]; }
inline int KPlainBuffer::size() const { return Size; }
inline bool KPlainBuffer::isReadOnly() const { return ReadOnly; }
inline bool KPlainBuffer::isModified() const { return Modified; }
inline void KPlainBuffer::setDatum( unsigned int Offset, const char Char )
{ Data[Offset] = Char; Modified = true; }
inline void KPlainBuffer::setReadOnly( bool RO ) { ReadOnly = RO; }
inline void KPlainBuffer::setModified( bool M ) { Modified = M; }
inline void KPlainBuffer::setMaxSize( int MS ) { MaxSize = MS; }
inline void KPlainBuffer::setKeepsMemory( bool KM ) { KeepsMemory = KM; }
inline char *KPlainBuffer::data() const { return Data; }
inline int KPlainBuffer::maxSize() const { return MaxSize; }
inline bool KPlainBuffer::keepsMemory() const { return KeepsMemory; }
}
#endif
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