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/***************************************************************************
buffer.h - description
-------------------
begin : Thu Jun 6 2002
Copyright (c) 2002 by Tom Linsky <twl6@po.cwru.edu>
Copyright (c) 2003-2004 by Matt Rogers <mattr@kde.org>
Kopete (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org>
*************************************************************************
* *
* 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. *
* *
*************************************************************************
*/
#ifndef BUFFER_H
#define BUFFER_H
#include "oscartypes.h"
#include <tqvaluelist.h>
#include <tqcstring.h>
class QString;
using namespace Oscar;
/**
* @brief A data buffer
*/
class Buffer
{
public:
/** Default constructor */
Buffer();
Buffer( const Buffer& other );
/**
* \brief Create a prefilled buffer
*
* Constructor that creates a prefilled buffer of @p len length
* that contains the data from @p b.
*/
Buffer(const char *b, Q_ULONG len);
/**
* \brief Create a prefilled buffer
*
* Constructor that creates a prefilled buffer from the TQByteArray \p data
*/
Buffer( const TQByteArray& data );
/** Default destructor */
~Buffer();
/**
* returns the raw buffer
*/
char *buffer() const;
/**
* Returns the remaining length of the buffer past the current read
* position.
*/
int length() const;
/**
* adds the given string to the buffer (make sure it's NULL-terminated)
*/
int addString(TQByteArray);
int addString(TQByteArray, DWORD);
int addString(const char*, DWORD);
int addString(const unsigned char*, DWORD);
/**
* Little-endian version of addString
*/
int addLEString(const char *, const DWORD);
/**
* adds the given string to the buffer with the length in front of it
* (make sure it's NULL-terminated)
*/
int addLNTS(const char * s);
/**
* Little-endian version of addLNTS
*/
int addLELNTS(const char * s);
/**
* adds the given DWord to the buffer
*/
int addDWord(const DWORD);
/**
* adds the given word to the buffer
*/
int addWord(const WORD);
/**
* adds the given word to the buffer in
* little-endian format as needed by old icq server
*/
int addLEWord(const WORD w);
/**
* adds the given DWord to the buffer in
* little-endian format as needed by old icq server
*/
int addLEDWord(const DWORD dw);
/**
* adds the given byte to the buffer
*/
int addByte(const BYTE);
int addLEByte(const BYTE);
/**
* empties the current buffer.
*/
void clear();
/**
* Adds a TLV to the buffer
*/
int addTLV( const TLV& t );
/**
* Adds a TLV with the given type and data
*/
int addTLV(WORD, WORD, const char *);
/**
* Adds a little-endian TLV with the given type and data
*/
int addLETLV(WORD, WORD, const char *);
/**
* Returns a TQString representation of the buffer
*/
TQString toString() const;
/**
* gets a DWord out of the buffer
*/
DWORD getDWord();
/**
* Gets a word out of the buffer
*/
WORD getWord();
/**
* Gets a byte out of the buffer
* It's not a constant method. It advances the buffer
* to the next BYTE after returning one.
*/
BYTE getByte();
/**
* Skip \p bytesToSkip number of bytes in the buffer
* Like getByte() the buffer is advanced when skipping
*/
void skipBytes( int bytesToSkip );
/**
* Same as above but returns little-endian
*/
WORD getLEWord();
DWORD getLEDWord();
BYTE getLEByte();
/**
* Set the buffer to the given values.
*/
void setBuf(char *, const WORD);
/**
* Allocates memory for and gets a block of buffer bytes
*/
TQByteArray getBlock(WORD len);
TQByteArray getBBlock(WORD len);
/**
* Allocates memory for and gets a block of buffer words
*/
WORD *getWordBlock(WORD len);
/**
* Same as above but returning little-endian
*/
TQCString getLEBlock(WORD len);
/**
* Convenience function that gets a LNTS (long null terminated string)
* from the buffer. Otherwise you'd need a getWord() + getBlock() call :)
*/
TQCString getLNTS();
TQCString getLELNTS();
/**
* adds a 16-bit long TLV
*/
int addTLV16(const WORD type, const WORD data);
/**
* adds a 16-bit long little-endian TLV
*/
int addLETLV16(const WORD type, const WORD data);
/**
* adds the given byte to a TLV
*/
int addTLV8(const WORD type, const BYTE data);
/**
* adds the given byte to a little-endian TLV
*/
int addLETLV8(const WORD type, const BYTE data);
/**
* Gets a TLV, storing it in a struct and returning it
*/
TLV getTLV();
/**
* Gets a list of TLV's
*/
TQValueList<TLV> getTLVList();
/**
* Creates a chat data segment for a tlv and calls addTLV with that data
*/
int addChatTLV(const WORD, const WORD, const TQString &, const WORD);
/**
* Similar to the LNTS functions but string is NOT null-terminated
*/
int addBSTR(const char * s);
TQByteArray getBSTR();
TQString peekBSTR();
int addBUIN(const char * s);
TQByteArray getBUIN();
TQString peekBUIN();
operator TQByteArray() const;
private:
/**
* Make the buffer bigger by @p inc bytes
*/
void expandBuffer(unsigned int inc);
private:
TQByteArray mBuffer;
unsigned int mReadPos;
};
#endif
// kate: tab-width 4; indent-mode csands;
// vim: set noet ts=4 sts=4 sw=4:
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