Blame qtools/qtextstream.h

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/****************************************************************************
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** 
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**
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** Definition of QTextStream class
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**
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** Created : 940922
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**
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** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
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**
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** This file is part of the tools module of the Qt GUI Toolkit.
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**
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** This file may be distributed under the terms of the Q Public License
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** as defined by Trolltech AS of Norway and appearing in the file
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** LICENSE.QPL included in the packaging of this file.
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
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** licenses may use this file in accordance with the Qt Commercial License
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** Agreement provided with the Software.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
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**   information about Qt Commercial License Agreements.
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** See http://www.trolltech.com/qpl/ for QPL licensing information.
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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**
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** Contact info@trolltech.com if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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#ifndef QTEXTSTREAM_H
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#define QTEXTSTREAM_H
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#ifndef QT_H
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#include "qiodevice.h"
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#include "qstring.h"
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#include <stdio.h>
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#endif // QT_H
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#ifndef QT_NO_TEXTSTREAM
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class QTextCodec;
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class QTextDecoder;
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class QTextStreamPrivate;
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class Q_EXPORT QTextStream				// text stream class
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{
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public:
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    enum Encoding { Locale, Latin1, Unicode, UnicodeNetworkOrder,
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		    UnicodeReverse, RawUnicode, UnicodeUTF8 };
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    void	setEncoding( Encoding );
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#ifndef QT_NO_TEXTCODEC
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    void	setCodec( QTextCodec* );
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#endif
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    //    Encoding encoding() const { return cmode; }
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    QTextStream();
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    QTextStream( QIODevice * );
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    QTextStream( QString*, int mode );
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    QTextStream( QString&, int mode );		// obsolete
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    QTextStream( QByteArray, int mode );
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    QTextStream( FILE *, int mode );
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    virtual ~QTextStream();
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    QIODevice	*device() const;
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    void	 setDevice( QIODevice * );
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    void	 unsetDevice();
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    bool	 atEnd() const;
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    bool	 eof() const;
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    QTextStream &operator>>( QChar & );
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    QTextStream &operator>>( char & );
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    QTextStream &operator>>( signed short & );
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    QTextStream &operator>>( unsigned short & );
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    QTextStream &operator>>( signed int & );
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    QTextStream &operator>>( unsigned int & );
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    QTextStream &operator>>( signed long & );
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    QTextStream &operator>>( unsigned long & );
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    QTextStream &operator>>( float & );
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    QTextStream &operator>>( double & );
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    QTextStream &operator>>( char * );
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    QTextStream &operator>>( QString & );
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    QTextStream &operator>>( QCString & );
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    QTextStream &operator<<( QChar );
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    QTextStream &operator<<( char );
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    QTextStream &operator<<( signed short );
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    QTextStream &operator<<( unsigned short );
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    QTextStream &operator<<( signed int );
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    QTextStream &operator<<( unsigned int );
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    QTextStream &operator<<( signed long );
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    QTextStream &operator<<( unsigned long );
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    QTextStream &operator<<( float );
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    QTextStream &operator<<( double );
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    QTextStream &operator<<( const char* );
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    QTextStream &operator<<( const QString & );
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    QTextStream &operator<<( const QCString & );
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    QTextStream &operator<<( void * );		// any pointer
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    QTextStream &readRawBytes( char *, uint len );
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    QTextStream &writeRawBytes( const char* , uint len );
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    QString	readLine();
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    QString	read();
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    void	skipWhiteSpace();
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    enum {
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	skipws	  = 0x0001,			// skip whitespace on input
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	left	  = 0x0002,			// left-adjust output
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	right	  = 0x0004,			// right-adjust output
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	internal  = 0x0008,			// pad after sign
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	bin	  = 0x0010,			// binary format integer
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	oct	  = 0x0020,			// octal format integer
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	dec	  = 0x0040,			// decimal format integer
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	hex	  = 0x0080,			// hex format integer
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	showbase  = 0x0100,			// show base indicator
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	showpoint = 0x0200,			// force decimal point (float)
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	uppercase = 0x0400,			// upper-case hex output
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	showpos	  = 0x0800,			// add '+' to positive integers
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	scientific= 0x1000,			// scientific float output
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	fixed	  = 0x2000			// fixed float output
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    };
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    static const int basefield;			// bin | oct | dec | hex
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    static const int adjustfield;		// left | right | internal
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    static const int floatfield;		// scientific | fixed
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    int	  flags() const;
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    int	  flags( int f );
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    int	  setf( int bits );
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    int	  setf( int bits, int mask );
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    int	  unsetf( int bits );
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    void  reset();
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    int	  width()	const;
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    int	  width( int );
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    int	  fill()	const;
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    int	  fill( int );
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    int	  precision()	const;
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    int	  precision( int );
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private:
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    long	 input_int();
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    void	init();
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    QTextStream &output_int( int, ulong, bool );
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    QIODevice	*dev;
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    bool	isNetworkOrder() { return internalOrder == QChar::networkOrdered(); }
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    int		 fflags;
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    int		 fwidth;
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    int		 fillchar;
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    int		 fprec;
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    bool	 fstrm;
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    bool	 owndev;
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    QTextCodec 	*mapper;
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    QTextStreamPrivate * d;
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    QChar	ungetcBuf;
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    bool	latin1;
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    bool 	internalOrder;
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    bool	doUnicodeHeader;
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    void	*reserved_ptr;
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    QChar	eat_ws();
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    void	ts_ungetc( QChar );
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    QChar	ts_getc();
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    uint	ts_getbuf( QChar*, uint );
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    void	ts_putc(int);
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    void	ts_putc(QChar);
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    bool	ts_isspace(QChar);
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    bool	ts_isdigit(QChar);
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    ulong	input_bin();
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    ulong	input_oct();
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    ulong	input_dec();
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    ulong	input_hex();
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    double	input_double();
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    QTextStream &writeBlock( const char* p, uint len );
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    QTextStream &writeBlock( const QChar* p, uint len );
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private:	// Disabled copy constructor and operator=
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#if defined(Q_DISABLE_COPY)
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    QTextStream( const QTextStream & );
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    QTextStream &operator=( const QTextStream & );
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#endif
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};
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typedef QTextStream QTS;
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class Q_EXPORT QTextIStream : public QTextStream {
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public:
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    QTextIStream( QString* s ) :
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	QTextStream(s,IO_ReadOnly) { }
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    QTextIStream( QByteArray ba ) :
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	QTextStream(ba,IO_ReadOnly) { }
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    QTextIStream( FILE *f ) :
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	QTextStream(f,IO_ReadOnly) { }
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};
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class Q_EXPORT QTextOStream : public QTextStream {
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public:
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    QTextOStream( QString* s ) :
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	QTextStream(s,IO_WriteOnly) { }
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    QTextOStream( QByteArray ba ) :
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	QTextStream(ba,IO_WriteOnly) { }
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    QTextOStream( FILE *f ) :
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	QTextStream(f,IO_WriteOnly) { }
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};
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/*****************************************************************************
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  QTextStream inline functions
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 *****************************************************************************/
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inline QIODevice *QTextStream::device() const
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{ return dev; }
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inline bool QTextStream::atEnd() const
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{ return dev ? dev->atEnd() : FALSE; }
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inline bool QTextStream::eof() const
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{ return atEnd(); }
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inline int QTextStream::flags() const
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{ return fflags; }
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inline int QTextStream::flags( int f )
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{ int oldf = fflags;  fflags = f;  return oldf; }
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inline int QTextStream::setf( int bits )
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{ int oldf = fflags;  fflags |= bits;  return oldf; }
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inline int QTextStream::setf( int bits, int mask )
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{ int oldf = fflags;  fflags = (fflags & ~mask) | (bits & mask); return oldf; }
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inline int QTextStream::unsetf( int bits )
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{ int oldf = fflags;  fflags &= ~bits;	return oldf; }
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inline int QTextStream::width() const
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{ return fwidth; }
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inline int QTextStream::width( int w )
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{ int oldw = fwidth;  fwidth = w;  return oldw;	 }
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inline int QTextStream::fill() const
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{ return fillchar; }
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inline int QTextStream::fill( int f )
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{ int oldc = fillchar;	fillchar = f;  return oldc;  }
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inline int QTextStream::precision() const
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{ return fprec; }
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inline int QTextStream::precision( int p )
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{ int oldp = fprec;  fprec = p;	 return oldp;  }
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/*!
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  Returns one character from the stream, or EOF.
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*/
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inline QChar QTextStream::ts_getc()
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{ QChar r; return ( ts_getbuf( &r,1 ) == 1 ? r : QChar((ushort)0xffff) ); }
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/*****************************************************************************
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  QTextStream manipulators
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 *****************************************************************************/
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typedef QTextStream & (*QTSFUNC)(QTextStream &);// manipulator function
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typedef int (QTextStream::*QTSMFI)(int);	// manipulator w/int argument
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class Q_EXPORT QTSManip {			// text stream manipulator
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public:
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    QTSManip( QTSMFI m, int a ) { mf=m; arg=a; }
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    void exec( QTextStream &s ) { (s.*mf)(arg); }
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private:
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    QTSMFI mf;					// QTextStream member function
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    int	   arg;					// member function argument
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};
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Q_EXPORT inline QTextStream &operator>>( QTextStream &s, QTSFUNC f )
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{ return (*f)( s ); }
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Q_EXPORT inline QTextStream &operator<<( QTextStream &s, QTSFUNC f )
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{ return (*f)( s ); }
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Q_EXPORT inline QTextStream &operator<<( QTextStream &s, QTSManip m )
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{ m.exec(s); return s; }
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Q_EXPORT QTextStream &bin( QTextStream &s );	// set bin notation
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Q_EXPORT QTextStream &oct( QTextStream &s );	// set oct notation
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Q_EXPORT QTextStream &dec( QTextStream &s );	// set dec notation
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Q_EXPORT QTextStream &hex( QTextStream &s );	// set hex notation
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Q_EXPORT QTextStream &endl( QTextStream &s );	// insert EOL ('\n')
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Q_EXPORT QTextStream &flush( QTextStream &s );	// flush output
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Q_EXPORT QTextStream &ws( QTextStream &s );	// eat whitespace on input
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Q_EXPORT QTextStream &reset( QTextStream &s );	// set default flags
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Q_EXPORT inline QTSManip qSetW( int w )
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{
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    QTSMFI func = &QTextStream::width;
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    return QTSManip(func,w);
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}
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Q_EXPORT inline QTSManip qSetFill( int f )
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{
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    QTSMFI func = &QTextStream::fill;
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    return QTSManip(func,f);
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}
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Q_EXPORT inline QTSManip qSetPrecision( int p )
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{
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    QTSMFI func = &QTextStream::precision;
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    return QTSManip(func,p);
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}
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#ifndef QT_ALTERNATE_QTSMANIP
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// These will go away in Qt 3.0, as they conflict with std libs
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//
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// If you get conflicts now, #define QT_ALTERNATE_QTSMANIP before
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// including this file.
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Q_EXPORT inline QTSManip setw( int w )
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{
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    QTSMFI func = &QTextStream::width;
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    return QTSManip(func,w);
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}
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Q_EXPORT inline QTSManip setfill( int f )
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{
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    QTSMFI func = &QTextStream::fill;
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    return QTSManip(func,f);
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}
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Q_EXPORT inline QTSManip setprecision( int p )
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{
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    QTSMFI func = &QTextStream::precision;
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    return QTSManip(func,p);
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}
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#endif
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#endif // QT_NO_TEXTSTREAM
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#endif // QTEXTSTREAM_H