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# qregexp.h

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

    /****************************************************************************
    ** $Id: qt/qregexp.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of QRegExp class
    **
    ** Created : 950126
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  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 ASA 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 QREGEXP_H
    #define QREGEXP_H

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

    #ifndef QT_NO_REGEXP
    class QRegExpEngine;
    struct QRegExpPrivate;

    class Q_EXPORT QRegExp
    {
    public:
        enum CaretMode { CaretAtZero, CaretAtOffset, CaretWontMatch };

        QRegExp();
        QRegExp( const QString& pattern, bool caseSensitive = TRUE,
    	     bool wildcard = FALSE );
        QRegExp( const QRegExp& rx );
        ~QRegExp();
        QRegExp& operator=( const QRegExp& rx );

        bool operator==( const QRegExp& rx ) const;
        bool operator!=( const QRegExp& rx ) const { return !operator==( rx ); }

        bool isEmpty() const;
        bool isValid() const;
        QString pattern() const;
        void setPattern( const QString& pattern );
        bool caseSensitive() const;
        void setCaseSensitive( bool sensitive );
    #ifndef QT_NO_REGEXP_WILDCARD
        bool wildcard() const;
        void setWildcard( bool wildcard );
    #endif
        bool minimal() const;
        void setMinimal( bool minimal );

        bool exactMatch( const QString& str ) const;
    #ifndef QT_NO_COMPAT
        int match( const QString& str, int index = 0, int *len = 0,
    	       bool indexIsStart = TRUE ) const;
    #endif

    #if defined(Q_QDOC)
        int search( const QString& str, int offset = 0,
    		CaretMode caretMode = CaretAtZero ) const;
        int searchRev( const QString& str, int offset = -1,
    		   CaretMode caretMode = CaretAtZero ) const;
    #else
        // ### Qt 4.0: reduce these four to two functions
        int search( const QString& str, int offset = 0 ) const;
        int search( const QString& str, int offset, CaretMode caretMode ) const;
        int searchRev( const QString& str, int offset = -1 ) const;
        int searchRev( const QString& str, int offset, CaretMode caretMode ) const;
    #endif
        int matchedLength() const;
    #ifndef QT_NO_REGEXP_CAPTURE
        int numCaptures() const;
        QStringList capturedTexts();
        QString cap( int nth = 0 );
        int pos( int nth = 0 );
        QString errorString();
    #endif

        static QString escape( const QString& str );

    private:
        void prepareEngine() const;
        void prepareEngineForMatch( const QString& str ) const;
        void invalidateEngine();

        static int caretIndex( int offset, CaretMode caretMode );

        QRegExpEngine *eng;
        QRegExpPrivate *priv;
    };
    #endif // QT_NO_REGEXP
    #endif // QREGEXP_H