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qregexp.h

/****************************************************************************
** $Id: qt/src/tools/qregexp.h   2.2.1   edited 2000-08-25 $
**
** Definition of QRegExp class
**
** Created : 950126
**
** 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.
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**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
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**********************************************************************/

#ifndef QREGEXP_H
#define QREGEXP_H

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


class Q_EXPORT QRegExp
{
public:
    QRegExp();
    QRegExp( const QString &, bool caseSensitive=TRUE, bool wildcard=FALSE );
    QRegExp( const QRegExp & );
   ~QRegExp();
    QRegExp    &operator=( const QRegExp & );
    QRegExp    &operator=( const QString &pattern );

    bool        operator==( const QRegExp & )  const;
    bool        operator!=( const QRegExp &r ) const
                                        { return !(this->operator==(r)); }

    bool        isEmpty()       const   { return rxdata == 0; }
    bool        isValid()       const   { return error == 0; }

    bool        caseSensitive() const   { return cs; }
    void        setCaseSensitive( bool );

    bool        wildcard()      const   { return wc; }
    void        setWildcard( bool );

    QString     pattern()       const   { return rxstring; }
    // ### in Qt 3.0, provide a real implementation
    void        setPattern( const QString& pattern )
                                        { operator=( pattern ); }

    int         match( const QString &str, int index=0, int *len=0,
                       bool indexIsStart = TRUE ) const;
    int         find( const QString& str, int index )
                                        { return match( str, index ); }

protected:
    void        compile();
    const QChar *matchstr( uint *, const QChar *, uint, const QChar * ) const;

private:
    QString     rxstring;                       // regular expression pattern
    uint        *rxdata;                        // compiled regexp pattern
    int         error;                          // error status
    bool        cs;                             // case sensitive
    bool        wc;                             // wildcard
};


#endif // QREGEXP_H