qstring.h

This is the verbatim text of the qstring.h include file. It is provided only for illustration; the copyright remains with Trolltech.

/****************************************************************************
** $Id: //depot/qt/main/src/tools/qstring.h#141 $
**
** Definition of the QString class, and related Unicode
** functions.
**
** Created : 920609
**
** 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
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QSTRING_H
#define QSTRING_H

#ifndef QT_H
#include "qcstring.h"
#endif // QT_H


/*****************************************************************************
  QString class
 *****************************************************************************/

class QRegExp;
class QString;
class QCharRef;

class Q_EXPORT QChar {
public:
    QChar();
    QChar( char c );
    QChar( uchar c );
    QChar( uchar c, uchar r );
    QChar( const QChar& c );
    QChar( ushort rc );
    QChar( short rc );
    QChar( uint rc );
    QChar( int rc );

    QT_STATIC_CONST QChar null;            // 0000
    QT_STATIC_CONST QChar replacement;     // FFFD
    QT_STATIC_CONST QChar byteOrderMark;     // FEFF
    QT_STATIC_CONST QChar byteOrderSwapped;     // FFFE
    QT_STATIC_CONST QChar nbsp;            // 00A0

    // Unicode information

    enum Category
    {
        NoCategory,

        Mark_NonSpacing,          //   Mn
        Mark_SpacingCombining,    //   Mc
        Mark_Enclosing,           //   Me

        Number_DecimalDigit,      //   Nd
        Number_Letter,            //   Nl
        Number_Other,             //   No

        Separator_Space,          //   Zs
        Separator_Line,           //   Zl
        Separator_Paragraph,      //   Zp

        Other_Control,            //   Cc
        Other_Format,             //   Cf
        Other_Surrogate,          //   Cs
        Other_PrivateUse,         //   Co
        Other_NotAssigned,        //   Cn

        Letter_Uppercase,         //   Lu
        Letter_Lowercase,         //   Ll
        Letter_Titlecase,         //   Lt
        Letter_Modifier,          //   Lm
        Letter_Other,             //   Lo

        Punctuation_Connector,    //   Pc
        Punctuation_Dask,         //   Pd
        Punctuation_Open,         //   Ps
        Punctuation_Close,        //   Pe
        Punctuation_InitialQuote, //   Pi
        Punctuation_FinalQuote,   //   Pf
        Punctuation_Other,        //   Po

        Symbol_Math,              //   Sm
        Symbol_Currency,          //   Sc
        Symbol_Modifier,          //   Sk
        Symbol_Other              //   So
    };

    enum Direction
    {
        DirL, DirR, DirEN, DirES, DirET, DirAN, DirCS, DirB, DirS, DirWS, DirON,
        DirLRE, DirLRO, DirAL, DirRLE, DirRLO, DirPDF, DirNSM, DirBN
    };

    enum Decomposition
    {
        Single, Canonical, Font, NoBreak, Initial, Medial,
        Final, Isolated, Circle, Super, Sub, Vertical,
        Wide, Narrow, Small, Square, Compat, Fraction
    };

    enum Joining
    {
        OtherJoining, Dual, Right, Center
    };

    // ****** WHEN ADDING FUNCTIONS, CONSIDER ADDING TO QCharRef TOO

    int digitValue() const;
    QChar lower() const;
    QChar upper() const;

    Category category() const;
    Direction direction() const;
    Joining joining() const;
    bool mirrored() const;
    QChar mirroredChar() const;
    QString decomposition() const;
    Decomposition decompositionTag() const;

    char latin1() const { return rw ? 0 : cl; }
    ushort unicode() const { return (rw << 8) | cl; }
#ifndef QT_NO_CAST_ASCII
    // like all ifdef'd code this is undocumented
    operator char() const { return latin1(); }
#endif

    bool isNull() const { return unicode()==0; }
    bool isPrint() const;
    bool isPunct() const;
    bool isSpace() const;
    bool isMark() const;
    bool isLetter() const;
    bool isNumber() const;
    bool isLetterOrNumber() const;
    bool isDigit() const;

    uchar& cell() {
        uchar *t = &cl;
        return *t;
    }
    uchar& row() {
        uchar *t = &rw;
        return *t;
    }
    uchar cell() const { return cl; }
    uchar row() const { return rw; }

    static bool networkOrdered() { return (int)net_ordered == 1; }

    friend inline int operator==( char ch, QChar c );
    friend inline int operator==( QChar c, char ch );
    friend inline int operator==( QChar c1, QChar c2 );
    friend inline int operator!=( QChar c1, QChar c2 );
    friend inline int operator!=( char ch, QChar c );
    friend inline int operator!=( QChar c, char ch );
    friend inline int operator<=( QChar c, char ch );
    friend inline int operator<=( char ch, QChar c );
    friend inline int operator<=( QChar c1, QChar c2 );

private:
#if defined(_WS_X11_) || defined(_OS_WIN32_BYTESWAP_) || defined( _WS_QWS_ )
    // XChar2b on X11, ushort on _OS_WIN32_BYTESWAP_
    //### QWS must be defined on a platform by platform basis
    uchar rw;
    uchar cl;
#if defined(QT_QSTRING_UCS_4)
    ushort grp;
#endif
    enum { net_ordered = 1 };
#else
    // ushort on _OS_WIN32_
    uchar cl;
    uchar rw;
#if defined(QT_QSTRING_UCS_4)
    ushort grp;
#endif
    enum { net_ordered = 0 };
#endif
} Q_PACKED;

inline QChar::QChar()
{
    rw = 0; cl = 0;
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( char c )
{
    rw = 0; cl = (uchar)c;
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( uchar c )
{
    rw = 0; cl = c;
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( uchar c, uchar r )
{
    rw = r; cl = c;
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( const QChar& c )
{
    rw = c.rw; cl = c.cl;
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( ushort rc )
{
    rw = (uchar)((rc>>8)&0xff); cl = (uchar)(rc&0xff);
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( short rc )
{
    rw = (uchar)((rc>>8)&0xff); cl = (uchar)(rc&0xff);
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( uint rc )
{
    rw = (uchar)((rc>>8)&0xff); cl = (uchar)(rc&0xff);
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}
inline QChar::QChar( int rc )
{
    rw = (uchar)((rc>>8)&0xff); cl = (uchar)(rc&0xff);
#ifdef QT_QSTRING_UCS_4
    grp = 0;
#endif
}


inline int operator==( char ch, QChar c )
{
    return ch == c.cl && !c.rw;
}

inline int operator==( QChar c, char ch )
{
    return ch == c.cl && !c.rw;
}

inline int operator==( QChar c1, QChar c2 )
{
    return c1.cl == c2.cl
        && c1.rw == c2.rw;
}

inline int operator!=( QChar c1, QChar c2 )
{
    return c1.cl != c2.cl
        || c1.rw != c2.rw;
}

inline int operator!=( char ch, QChar c )
{
    return ch != c.cl || c.rw;
}

inline int operator!=( QChar c, char ch )
{
    return ch != c.cl || c.rw;
}

inline int operator<=( QChar c, char ch )
{
    return !(ch < c.cl || c.rw);
}

inline int operator<=( char ch, QChar c )
{
    return ch <= c.cl || c.rw;
}

inline int operator<=( QChar c1, QChar c2 )
{
    return c1.rw > c2.rw
        ? FALSE
        : c1.rw < c2.rw
            ? TRUE
            : c1.cl <= c2.cl;
}

inline int operator>=( QChar c, char ch ) { return ch <= c; }
inline int operator>=( char ch, QChar c ) { return c <= ch; }
inline int operator>=( QChar c1, QChar c2 ) { return c2 <= c1; }
inline int operator<( QChar c, char ch ) { return !(ch<=c); }
inline int operator<( char ch, QChar c ) { return !(c<=ch); }
inline int operator<( QChar c1, QChar c2 ) { return !(c2<=c1); }
inline int operator>( QChar c, char ch ) { return !(ch>=c); }
inline int operator>( char ch, QChar c ) { return !(c>=ch); }
inline int operator>( QChar c1, QChar c2 ) { return !(c2>=c1); }

// internal
struct Q_EXPORT QStringData : public QShared {
    QStringData() :
        unicode(0), ascii(0), len(0), maxl(0), dirtyascii(0) { ref(); }
    QStringData(QChar *u, uint l, uint m) :
        unicode(u), ascii(0), len(l), maxl(m), dirtyascii(0) { }

    ~QStringData() { if ( unicode ) delete[] ((char*)unicode);
                     if ( ascii ) delete[] ascii; }

    void deleteSelf();
    QChar *unicode;
    char *ascii;
    uint len;
    uint maxl:30;
    uint dirtyascii:1;
};


class Q_EXPORT QString
{
public:
    QString();                                  // make null string
    QString( QChar );                           // one-char string
    QString( const QString & );                 // impl-shared copy
    QString( const QByteArray& );               // deep copy
    QString( const QChar* unicode, uint length ); // deep copy
#ifndef QT_NO_CAST_ASCII
    QString( const char *str );                 // deep copy
#endif
    ~QString();

    QString    &operator=( const QString & );   // impl-shared copy
#ifndef QT_NO_CAST_ASCII
    QString    &operator=( const char * );      // deep copy
#endif
    QString    &operator=( const QCString& );   // deep copy
    QString    &operator=( QChar c );
    QString    &operator=( char c );

    QT_STATIC_CONST QString null;

    bool        isNull()        const;
    bool        isEmpty()       const;
    uint        length()        const;
    void        truncate( uint pos );

    void        fill( QChar c, int len = -1 );

    QString     copy()  const;

    QString arg(long a, int fieldwidth=0, int base=10) const;
    QString arg(ulong a, int fieldwidth=0, int base=10) const;
    QString arg(int a, int fieldwidth=0, int base=10) const;
    QString arg(uint a, int fieldwidth=0, int base=10) const;
    QString arg(short a, int fieldwidth=0, int base=10) const;
    QString arg(ushort a, int fieldwidth=0, int base=10) const;
    QString arg(char a, int fieldwidth=0) const;
    QString arg(QChar a, int fieldwidth=0) const;
    QString arg(const QString& a, int fieldwidth=0) const;
    QString arg(double a, int fieldwidth=0, char fmt='g', int prec=-1) const;

    QString    &sprintf( const char* format, ... )
#if defined(_CC_GNU_) && !defined(__INSURE__)
        __attribute__ ((format (printf, 2, 3)))
#endif
        ;

    int         find( QChar c, int index=0, bool cs=TRUE ) const;
    int         find( char c, int index=0, bool cs=TRUE ) const;
    int         find( const QString &str, int index=0, bool cs=TRUE ) const;
    int         find( const QRegExp &, int index=0 ) const;
#ifndef QT_NO_CAST_ASCII
    int         find( const char* str, int index=0 ) const;
#endif
    int         findRev( QChar c, int index=-1, bool cs=TRUE) const;
    int         findRev( char c, int index=-1, bool cs=TRUE) const;
    int         findRev( const QString &str, int index=-1, bool cs=TRUE) const;
    int         findRev( const QRegExp &, int index=-1 ) const;
#ifndef QT_NO_CAST_ASCII
    int         findRev( const char* str, int index=-1 ) const;
#endif
    int         contains( QChar c, bool cs=TRUE ) const;
    int         contains( char c, bool cs=TRUE ) const
                    { return contains(QChar(c), cs); }
#ifndef QT_NO_CAST_ASCII
    int         contains( const char* str, bool cs=TRUE ) const;
#endif
    int         contains( const QString &str, bool cs=TRUE ) const;
    int         contains( const QRegExp & ) const;

    QString     left( uint len )  const;
    QString     right( uint len ) const;
    QString     mid( uint index, uint len=0xffffffff) const;

    QString     leftJustify( uint width, QChar fill=' ', bool trunc=FALSE)const;
    QString     rightJustify( uint width, QChar fill=' ',bool trunc=FALSE)const;

    QString     lower() const;
    QString     upper() const;

    QString     stripWhiteSpace()       const;
    QString     simplifyWhiteSpace()    const;

    QString    &insert( uint index, const QString & );
    QString    &insert( uint index, const QChar*, uint len );
    QString    &insert( uint index, QChar );
    QString    &insert( uint index, char c ) { return insert(index,QChar(c)); }
    QString    &append( char );
    QString    &append( QChar );
    QString    &append( const QString & );
    QString    &prepend( char );
    QString    &prepend( QChar );
    QString    &prepend( const QString & );
    QString    &remove( uint index, uint len );
    QString    &replace( uint index, uint len, const QString & );
    QString    &replace( uint index, uint len, const QChar*, uint clen );
    QString    &replace( const QRegExp &, const QString & );

    short       toShort( bool *ok=0, int base=10 )      const;
    ushort      toUShort( bool *ok=0, int base=10 )     const;
    int         toInt( bool *ok=0, int base=10 )        const;
    uint        toUInt( bool *ok=0, int base=10 )       const;
    long        toLong( bool *ok=0, int base=10 )       const;
    ulong       toULong( bool *ok=0, int base=10 )      const;
    float       toFloat( bool *ok=0 )   const;
    double      toDouble( bool *ok=0 )  const;

    QString    &setNum( short, int base=10 );
    QString    &setNum( ushort, int base=10 );
    QString    &setNum( int, int base=10 );
    QString    &setNum( uint, int base=10 );
    QString    &setNum( long, int base=10 );
    QString    &setNum( ulong, int base=10 );
    QString    &setNum( float, char f='g', int prec=6 );
    QString    &setNum( double, char f='g', int prec=6 );

    static QString number( long, int base=10 );
    static QString number( ulong, int base=10);
    static QString number( int, int base=10 );
    static QString number( uint, int base=10);
    static QString number( double, char f='g', int prec=6 );

    void        setExpand( uint index, QChar c );

    QString    &operator+=( const QString &str );
    QString    &operator+=( QChar c );
    QString    &operator+=( char c );

    // Your compiler is smart enough to use the const one if it can.
    QChar at( uint i ) const
        { return i<d->len ? d->unicode[i] : QChar::null; }
    QChar operator[]( int i ) const { return at((uint)i); }
    QCharRef at( uint i );
    QCharRef operator[]( int i );

    QChar constref(uint i) const
        { return at(i); }
    QChar& ref(uint i)
        { // Optimized for easy-inlining by simple compilers.
            if (d->count!=1 || i>=d->len)
                subat(i);
            d->dirtyascii=1;
            return d->unicode[i];
        }

    const QChar* unicode() const { return d->unicode; }
    const char* ascii() const;
    const char* latin1() const;
    static QString fromLatin1(const char*, int len=-1);
#ifndef QT_NO_TEXTCODEC
    QCString utf8() const;
    static QString fromUtf8(const char*, int len=-1);
#endif
    QCString local8Bit() const;
    static QString fromLocal8Bit(const char*, int len=-1);
    bool operator!() const;
#ifndef QT_NO_ASCII_CAST
    operator const char *() const { return latin1(); }
#endif

    QString &setUnicode( const QChar* unicode, uint len );
    QString &setUnicodeCodes( const ushort* unicode_as_ushorts, uint len );
    QString &setLatin1( const char*, int len=-1 );

    int compare( const QString& s ) const;
    static int compare( const QString& s1, const QString& s2 )
        { return s1.compare(s2); }

#ifndef QT_NO_DATASTREAM
    friend Q_EXPORT QDataStream &operator>>( QDataStream &, QString & );
#endif
    // new functions for BiDi
    void compose();
    QChar::Direction basicDirection();
    QString visual(int index = 0, int len = -1);

#ifndef QT_NO_COMPAT
    const char* data() const { return latin1(); }
#endif

    bool startsWith( const QString& ) const;

private:
    QString( int size, bool /*dummy*/ );        // allocate size incl. \0

    void deref();
    void real_detach();
    void setLength( uint pos );
    void subat( uint );
    bool findArg(int& pos, int& len) const;

    static QChar* asciiToUnicode( const char*, uint * len, uint maxlen=(uint)-1 );
    static QChar* asciiToUnicode( const QByteArray&, uint * len );
    static char* unicodeToAscii( const QChar*, uint len );

    QStringData *d;
    static QStringData* shared_null;
    static QStringData* makeSharedNull();

    friend class QConstString;
    QString(QStringData* dd, bool /*dummy*/) : d(dd) { }
};

class Q_EXPORT QCharRef {
    friend class QString;
    QString& s;
    uint p;
    QCharRef(QString* str, uint pos) : s(*str), p(pos) { }

public:
    // Most QChar operations repeated here...

    // all this is not documented: We just say "like QChar" and let it be.
#if 1
    ushort unicode() const { return s.constref(p).unicode(); }
    char latin1() const { return s.constref(p).latin1(); }

    // An operator= for each QChar cast constructor...
    QCharRef operator=(char c ) { s.ref(p)=c; return *this; }
    QCharRef operator=(uchar c ) { s.ref(p)=c; return *this; }
    QCharRef operator=(QChar c ) { s.ref(p)=c; return *this; }
    QCharRef operator=(const QCharRef& c ) { s.ref(p)=c.unicode(); return *this; }
    QCharRef operator=(ushort rc ) { s.ref(p)=rc; return *this; }
    QCharRef operator=(short rc ) { s.ref(p)=rc; return *this; }
    QCharRef operator=(uint rc ) { s.ref(p)=rc; return *this; }
    QCharRef operator=(int rc ) { s.ref(p)=rc; return *this; }

    operator QChar () const { return s.constref(p); }

    // each function...
    bool isNull() const { return unicode()==0; }
    bool isPrint() const { return s.constref(p).isPrint(); }
    bool isPunct() const { return s.constref(p).isPunct(); }
    bool isSpace() const { return s.constref(p).isSpace(); }
    bool isMark() const { return s.constref(p).isMark(); }
    bool isLetter() const { return s.constref(p).isLetter(); }
    bool isNumber() const { return s.constref(p).isNumber(); }
    bool isLetterOrNumber() { return s.constref(p).isLetterOrNumber(); }
    bool isDigit() const { return s.constref(p).isDigit(); }

    int digitValue() const { return s.constref(p).digitValue(); }
    QChar lower() { return s.constref(p).lower(); }
    QChar upper() { return s.constref(p).upper(); }

    QChar::Category category() const { return s.constref(p).category(); }
    QChar::Direction direction() const { return s.constref(p).direction(); }
    QChar::Joining joining() const { return s.constref(p).joining(); }
    bool mirrored() const { return s.constref(p).mirrored(); }
    QChar mirroredChar() const { return s.constref(p).mirroredChar(); }
    QString decomposition() const { return s.constref(p).decomposition(); }
    QChar::Decomposition decompositionTag() const { return s.constref(p).decompositionTag(); }

    // Not the non-const ones of these.
    uchar cell() const { return s.constref(p).cell(); }
    uchar row() const { return s.constref(p).row(); }
#endif
};

inline QCharRef QString::at( uint i ) { return QCharRef(this,i); }
inline QCharRef QString::operator[]( int i ) { return at((uint)i); }


class Q_EXPORT QConstString : private QString {
public:
    QConstString( QChar* unicode, uint length );
    ~QConstString();
    const QString& string() const { return *this; }
};


/*****************************************************************************
  QString stream functions
 *****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_EXPORT QDataStream &operator<<( QDataStream &, const QString & );
Q_EXPORT QDataStream &operator>>( QDataStream &, QString & );
#endif

/*****************************************************************************
  QString inline functions
 *****************************************************************************/

// These two move code into makeSharedNull() and deletesData()
// to improve cache-coherence (and reduce code bloat), while
// keeping the common cases fast.
//
// No safe way to pre-init shared_null on ALL compilers/linkers.
inline QString::QString() :
    d(shared_null ? shared_null : makeSharedNull())
{
    d->ref();
}
//
inline QString::~QString()
{
    if ( d->deref() ) {
        if ( d == shared_null )
            shared_null = 0;
        d->deleteSelf();
    }
}

inline QString &QString::operator=( QChar c )
{ return *this = QString(c); }

inline QString &QString::operator=( char c )
{ return *this = QString(QChar(c)); }

inline bool QString::isNull() const
{ return unicode() == 0; }

inline bool QString::operator!() const
{ return isNull(); }

inline uint QString::length() const
{ return d->len; }

inline bool QString::isEmpty() const
{ return length() == 0; }

inline QString QString::copy() const
{ return QString( *this ); }

inline QString &QString::prepend( const QString & s )
{ return insert(0,s); }

inline QString &QString::prepend( QChar c )
{ return insert(0,c); }

inline QString &QString::prepend( char c )
{ return insert(0,c); }

inline QString &QString::append( const QString & s )
{ return operator+=(s); }

inline QString &QString::append( QChar c )
{ return operator+=(c); }

inline QString &QString::append( char c )
{ return operator+=(c); }

inline QString &QString::setNum( short n, int base )
{ return setNum((long)n, base); }

inline QString &QString::setNum( ushort n, int base )
{ return setNum((ulong)n, base); }

inline QString &QString::setNum( int n, int base )
{ return setNum((long)n, base); }

inline QString &QString::setNum( uint n, int base )
{ return setNum((ulong)n, base); }

inline QString &QString::setNum( float n, char f, int prec )
{ return setNum((double)n,f,prec); }

inline QString QString::arg(int a, int fieldwidth, int base) const
{ return arg((long)a, fieldwidth, base); }

inline QString QString::arg(uint a, int fieldwidth, int base) const
{ return arg((ulong)a, fieldwidth, base); }

inline QString QString::arg(short a, int fieldwidth, int base) const
{ return arg((long)a, fieldwidth, base); }

inline QString QString::arg(ushort a, int fieldwidth, int base) const
{ return arg((ulong)a, fieldwidth, base); }

inline int QString::find( char c, int index, bool cs ) const
{ return find(QChar(c), index, cs); }

inline int QString::findRev( char c, int index, bool cs) const
{ return findRev( QChar(c), index, cs ); }


#ifndef QT_NO_CAST_ASCII
inline int QString::find( const char* str, int index ) const
{ return find(QString::fromLatin1(str), index); }

inline int QString::findRev( const char* str, int index ) const
{ return findRev(QString::fromLatin1(str), index); }
#endif


/*****************************************************************************
  QString non-member operators
 *****************************************************************************/

Q_EXPORT bool operator!=( const QString &s1, const QString &s2 );
Q_EXPORT bool operator<( const QString &s1, const QString &s2 );
Q_EXPORT bool operator<=( const QString &s1, const QString &s2 );
Q_EXPORT bool operator==( const QString &s1, const QString &s2 );
Q_EXPORT bool operator>( const QString &s1, const QString &s2 );
Q_EXPORT bool operator>=( const QString &s1, const QString &s2 );
#ifndef QT_NO_CAST_ASCII
Q_EXPORT bool operator!=( const QString &s1, const char *s2 );
Q_EXPORT bool operator<( const QString &s1, const char *s2 );
Q_EXPORT bool operator<=( const QString &s1, const char *s2 );
Q_EXPORT bool operator==( const QString &s1, const char *s2 );
Q_EXPORT bool operator>( const QString &s1, const char *s2 );
Q_EXPORT bool operator>=( const QString &s1, const char *s2 );
Q_EXPORT bool operator!=( const char *s1, const QString &s2 );
Q_EXPORT bool operator<( const char *s1, const QString &s2 );
Q_EXPORT bool operator<=( const char *s1, const QString &s2 );
Q_EXPORT bool operator==( const char *s1, const QString &s2 );
//Q_EXPORT bool operator>( const char *s1, const QString &s2 ); // MSVC++
Q_EXPORT bool operator>=( const char *s1, const QString &s2 );
#endif

Q_EXPORT inline QString operator+( const QString &s1, const QString &s2 )
{
    QString tmp( s1 );
    tmp += s2;
    return tmp;
}

#ifndef QT_NO_CAST_ASCII
Q_EXPORT inline QString operator+( const QString &s1, const char *s2 )
{
    QString tmp( s1 );
    tmp += QString::fromLatin1(s2);
    return tmp;
}

Q_EXPORT inline QString operator+( const char *s1, const QString &s2 )
{
    QString tmp = QString::fromLatin1( s1 );
    tmp += s2;
    return tmp;
}
#endif

Q_EXPORT inline QString operator+( const QString &s1, QChar c2 )
{
    QString tmp( s1 );
    tmp += c2;
    return tmp;
}

Q_EXPORT inline QString operator+( const QString &s1, char c2 )
{
    QString tmp( s1 );
    tmp += c2;
    return tmp;
}

Q_EXPORT inline QString operator+( QChar c1, const QString &s2 )
{
    QString tmp;
    tmp += c1;
    tmp += s2;
    return tmp;
}

Q_EXPORT inline QString operator+( char c1, const QString &s2 )
{
    QString tmp;
    tmp += c1;
    tmp += s2;
    return tmp;
}

#if defined(_OS_WIN32_)
extern Q_EXPORT QString qt_winQString(void*);
extern Q_EXPORT const void* qt_winTchar(const QString& str, bool addnul);
extern Q_EXPORT void* qt_winTchar_new(const QString& str);
extern Q_EXPORT QCString qt_winQString2MB( const QString& s, int len=-1 );
extern Q_EXPORT QString qt_winMB2QString( const char* mb, int len=-1 );
#endif

#endif // QSTRING_H

Best Of

Actualités les plus lues

Semaine

Mois

Année

Le blog Digia au hasard

Déploiement d'applications Qt Commercial sur les tablettes Windows 8

Le blog Digia est l'endroit privilégié pour la communication sur l'édition commerciale de Qt, où des réponses publiques sont apportées aux questions les plus posées au support. Lire l'article.

Communauté

Ressources

Liens utiles

Contact

Vous souhaitez rejoindre la rédaction ou proposer un tutoriel, une traduction, une question... ? Postez dans le forum Contribuez ou contactez-nous par MP ou par email (voir en bas de page).

Qt dans le magazine

Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia.	Qt 2.3
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD.
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP !

Responsables bénévoles de la rubrique Qt : Thibaut Cuvelier - Jonathan Courtois -

Developpez.com

Services

Partenaires