qdatastream.h

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/****************************************************************************
** $Id: qdatastream.h,v 1.2 2003/07/10 02:40:10 llornkcor Exp $
**
** Definition of QDataStream class
**
** Created : 930831
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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**********************************************************************/

#ifndef QDATASTREAM_H
#define QDATASTREAM_H

#ifndef QT_H
#include "qiodevice.h"
#include "qstring.h"
#endif // QT_H

#ifndef QT_NO_DATASTREAM
class Q_EXPORT QDataStream                              // data stream class
{
public:
    QDataStream();
    QDataStream( QIODevice * );
    QDataStream( QByteArray, int mode );
    virtual ~QDataStream();

    QIODevice   *device() const;
    void         setDevice( QIODevice * );
    void         unsetDevice();

    bool         atEnd() const;
    bool         eof() const;

    enum ByteOrder { BigEndian, LittleEndian };
    int          byteOrder()    const;
    void         setByteOrder( int );

    bool         isPrintableData() const;
    void         setPrintableData( bool );

    int          version() const;
    void         setVersion( int );

    QDataStream &operator>>( Q_INT8 &i );
    QDataStream &operator>>( Q_UINT8 &i );
    QDataStream &operator>>( Q_INT16 &i );
    QDataStream &operator>>( Q_UINT16 &i );
    QDataStream &operator>>( Q_INT32 &i );
    QDataStream &operator>>( Q_UINT32 &i );
    QDataStream &operator>>( Q_LONG &i );
    QDataStream &operator>>( Q_ULONG &i );

    QDataStream &operator>>( float &f );
    QDataStream &operator>>( double &f );
    QDataStream &operator>>( char *&str );

    QDataStream &operator<<( Q_INT8 i );
    QDataStream &operator<<( Q_UINT8 i );
    QDataStream &operator<<( Q_INT16 i );
    QDataStream &operator<<( Q_UINT16 i );
    QDataStream &operator<<( Q_INT32 i );
    QDataStream &operator<<( Q_UINT32 i );
    QDataStream &operator<<( Q_LONG i );
    QDataStream &operator<<( Q_ULONG i );
    QDataStream &operator<<( float f );
    QDataStream &operator<<( double f );
    QDataStream &operator<<( const char *str );

    QDataStream &readBytes( char *&, uint &len );
    QDataStream &readRawBytes( char *, uint len );

    QDataStream &writeBytes( const char *, uint len );
    QDataStream &writeRawBytes( const char *, uint len );

private:
    QIODevice   *dev;
    bool         owndev;
    int          byteorder;
    bool         printable;
    bool         noswap;
    int          ver;

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QDataStream( const QDataStream & );
    QDataStream &operator=( const QDataStream & );
#endif
};


/*****************************************************************************
  QDataStream inline functions
 *****************************************************************************/

inline QIODevice *QDataStream::device() const
{ return dev; }

inline bool QDataStream::atEnd() const
{ return dev ? dev->atEnd() : TRUE; }

inline bool QDataStream::eof() const
{ return atEnd(); }

inline int QDataStream::byteOrder() const
{ return byteorder; }

inline bool QDataStream::isPrintableData() const
{ return printable; }

inline void QDataStream::setPrintableData( bool p )
{ printable = p; }

inline int QDataStream::version() const
{ return ver; }

inline void QDataStream::setVersion( int v )
{ ver = v; }

inline QDataStream &QDataStream::operator>>( Q_UINT8 &i )
{ return *this >> (Q_INT8&)i; }

inline QDataStream &QDataStream::operator>>( Q_UINT16 &i )
{ return *this >> (Q_INT16&)i; }

inline QDataStream &QDataStream::operator>>( Q_UINT32 &i )
{ return *this >> (Q_INT32&)i; }

inline QDataStream &QDataStream::operator>>( Q_ULONG &i )
{ return *this >> (Q_LONG&)i; }

inline QDataStream &QDataStream::operator<<( Q_UINT8 i )
{ return *this << (Q_INT8)i; }

inline QDataStream &QDataStream::operator<<( Q_UINT16 i )
{ return *this << (Q_INT16)i; }

inline QDataStream &QDataStream::operator<<( Q_UINT32 i )
{ return *this << (Q_INT32)i; }

inline QDataStream &QDataStream::operator<<( Q_ULONG i )
{ return *this << (Q_LONG)i; }


#endif // QT_NO_DATASTREAM
#endif // QDATASTREAM_H

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