qstring-h.html

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    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 <a href="qcharref.html">QCharRef</a> {
    friend class QString;
    QString&amp; 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&amp; 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 <a href="qconststring.html">QConstString</a> : private <a href="qstring.html">QString</a> {
public:
    QConstString( QChar* unicode, uint length );
    ~QConstString();
    const QString&amp; string() const { return *this; }
};


/*****************************************************************************
  QString stream functions
 *****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QString &amp; );
Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QString &amp; );
#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-&gt;ref();
}
//
inline QString::~QString()
{
    if ( d-&gt;deref() ) {
        if ( d == shared_null )
            shared_null = 0;
        d-&gt;deleteSelf();
    }
}

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

inline QString &amp;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-&gt;len; }

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

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

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

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

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

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

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

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

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

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

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

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

inline QString &amp;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 &amp;s1, const QString &amp;s2 );
Q_EXPORT bool operator&lt;( const QString &amp;s1, const QString &amp;s2 );
Q_EXPORT bool operator&lt;=( const QString &amp;s1, const QString &amp;s2 );
Q_EXPORT bool operator==( const QString &amp;s1, const QString &amp;s2 );
Q_EXPORT bool operator&gt;( const QString &amp;s1, const QString &amp;s2 );
Q_EXPORT bool operator&gt;=( const QString &amp;s1, const QString &amp;s2 );
#ifndef QT_NO_CAST_ASCII
Q_EXPORT bool operator!=( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator&lt;( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator&lt;=( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator==( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator&gt;( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator&gt;=( const QString &amp;s1, const char *s2 );
Q_EXPORT bool operator!=( const char *s1, const QString &amp;s2 );
Q_EXPORT bool operator&lt;( const char *s1, const QString &amp;s2 );
Q_EXPORT bool operator&lt;=( const char *s1, const QString &amp;s2 );
Q_EXPORT bool operator==( const char *s1, const QString &amp;s2 );
//Q_EXPORT bool operator&gt;( const char *s1, const QString &amp;s2 ); // MSVC++
Q_EXPORT bool operator&gt;=( const char *s1, const QString &amp;s2 );
#endif

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

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

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

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

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

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

Q_EXPORT inline QString operator+( char c1, const QString &amp;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&amp; str, bool addnul);
extern Q_EXPORT void* qt_winTchar_new(const QString&amp; str);
extern Q_EXPORT QCString qt_winQString2MB( const QString&amp; s, int len=-1 );
extern Q_EXPORT QString qt_winMB2QString( const char* mb, int len=-1 );
#endif

#endif // QSTRING_H

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