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# qxml.h

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

    /****************************************************************************
    ** $Id:  qt/qxml.h   3.0.0   edited Sep 19 19:31 $
    **
    ** Definition of QXmlSimpleReader and related classes.
    **
    ** Created : 000518
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the XML 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 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 QXML_H
    #define QXML_H

    #ifndef QT_H
    #include "qtextstream.h"
    #include "qfile.h"
    #include "qstring.h"
    #include "qstringlist.h"
    #endif // QT_H

    #if !defined(QT_MODULE_XML) || defined( QT_LICENSE_PROFESSIONAL ) || defined( QT_INTERNAL_XML )
    #define QM_EXPORT_XML
    #else
    #define QM_EXPORT_XML Q_EXPORT
    #endif

    #ifndef QT_NO_XML

    class QXmlNamespaceSupport;
    class QXmlAttributes;
    class QXmlContentHandler;
    class QXmlDefaultHandler;
    class QXmlDTDHandler;
    class QXmlEntityResolver;
    class QXmlErrorHandler;
    class QXmlLexicalHandler;
    class QXmlDeclHandler;
    class QXmlInputSource;
    class QXmlLocator;
    class QXmlNamespaceSupport;
    class QXmlParseException;

    class QXmlReader;
    class QXmlSimpleReader;

    class QXmlSimpleReaderPrivate;
    class QXmlNamespaceSupportPrivate;
    class QXmlAttributesPrivate;
    class QXmlInputSourcePrivate;
    class QXmlParseExceptionPrivate;
    class QXmlLocatorPrivate;
    class QXmlDefaultHandlerPrivate;

    //
    // SAX Namespace Support
    //

    class QM_EXPORT_XML QXmlNamespaceSupport
    {
    public:
        QXmlNamespaceSupport();
        ~QXmlNamespaceSupport();

        void setPrefix( const QString&, const QString& );

        QString prefix( const QString& ) const;
        QString uri( const QString& ) const;
        void splitName( const QString&, QString&, QString& ) const;
        void processName( const QString&, bool, QString&, QString& ) const;
        QStringList prefixes() const;
        QStringList prefixes( const QString& ) const;

        void pushContext();
        void popContext();
        void reset();

    private:
        QXmlNamespaceSupportPrivate *d;
    };

    //
    // SAX Attributes
    //

    class QM_EXPORT_XML QXmlAttributes
    {
    public:
        QXmlAttributes() {}
        virtual ~QXmlAttributes() {}

        int index( const QString& qName ) const;
        int index( const QString& uri, const QString& localPart ) const;
        int length() const;
        int count() const;
        QString localName( int index ) const;
        QString qName( int index ) const;
        QString uri( int index ) const;
        QString type( int index ) const;
        QString type( const QString& qName ) const;
        QString type( const QString& uri, const QString& localName ) const;
        QString value( int index ) const;
        QString value( const QString& qName ) const;
        QString value( const QString& uri, const QString& localName ) const;

        void clear();
        void append( const QString &qName, const QString &uri, const QString &localPart, const QString &value );

    private:
        QStringList qnameList;
        QStringList uriList;
        QStringList localnameList;
        QStringList valueList;

        QXmlAttributesPrivate *d;
    };

    //
    // SAX Input Source
    //

    class QM_EXPORT_XML QXmlInputSource
    {
    public:
        QXmlInputSource();
        QXmlInputSource( QIODevice *dev );
        QXmlInputSource( QFile& file ); // obsolete
        QXmlInputSource( QTextStream& stream ); // obsolete
        virtual ~QXmlInputSource();

        virtual void setData( const QString& dat );
        virtual void setData( const QByteArray& dat );
        virtual void fetchData();
        virtual QString data();
        virtual QChar next();
        virtual void reset();

        static const QChar EndOfData;
        static const QChar EndOfDocument;

    protected:
        virtual QString fromRawData( const QByteArray &data, bool beginning = FALSE );

    private:
        void init();

        QIODevice *inputDevice;
        QTextStream *inputStream;

        QString str;
        const QChar *unicode;
        int pos;
        int length;
        bool nextReturnedEndOfData;
        QTextDecoder *encMapper;

        QXmlInputSourcePrivate *d;
    };

    //
    // SAX Exception Classes
    //

    class QM_EXPORT_XML QXmlParseException
    {
    public:
        QXmlParseException( const QString& name="", int c=-1, int l=-1, const QString& p="", const QString& s="" )
    	: msg( name ), column( c ), line( l ), pub( p ), sys( s )
        { }

        int columnNumber() const;
        int lineNumber() const;
        QString publicId() const;
        QString systemId() const;
        QString message() const;

    private:
        QString msg;
        int column;
        int line;
        QString pub;
        QString sys;

        QXmlParseExceptionPrivate *d;
    };

    //
    // XML Reader
    //

    class QM_EXPORT_XML QXmlReader
    {
    public:
        virtual bool feature( const QString& name, bool *ok = 0 ) const = 0;
        virtual void setFeature( const QString& name, bool value ) = 0;
        virtual bool hasFeature( const QString& name ) const = 0;
        virtual void* property( const QString& name, bool *ok = 0 ) const = 0;
        virtual void setProperty( const QString& name, void* value ) = 0;
        virtual bool hasProperty( const QString& name ) const = 0;
        virtual void setEntityResolver( QXmlEntityResolver* handler ) = 0;
        virtual QXmlEntityResolver* entityResolver() const = 0;
        virtual void setDTDHandler( QXmlDTDHandler* handler ) = 0;
        virtual QXmlDTDHandler* DTDHandler() const = 0;
        virtual void setContentHandler( QXmlContentHandler* handler ) = 0;
        virtual QXmlContentHandler* contentHandler() const = 0;
        virtual void setErrorHandler( QXmlErrorHandler* handler ) = 0;
        virtual QXmlErrorHandler* errorHandler() const = 0;
        virtual void setLexicalHandler( QXmlLexicalHandler* handler ) = 0;
        virtual QXmlLexicalHandler* lexicalHandler() const = 0;
        virtual void setDeclHandler( QXmlDeclHandler* handler ) = 0;
        virtual QXmlDeclHandler* declHandler() const = 0;
        virtual bool parse( const QXmlInputSource& input ) = 0;
        virtual bool parse( const QXmlInputSource* input ) = 0;
    };

    class QM_EXPORT_XML QXmlSimpleReader : public QXmlReader
    {
    public:
        QXmlSimpleReader();
        virtual ~QXmlSimpleReader();

        bool feature( const QString& name, bool *ok = 0 ) const;
        void setFeature( const QString& name, bool value );
        bool hasFeature( const QString& name ) const;

        void* property( const QString& name, bool *ok = 0 ) const;
        void setProperty( const QString& name, void* value );
        bool hasProperty( const QString& name ) const;

        void setEntityResolver( QXmlEntityResolver* handler );
        QXmlEntityResolver* entityResolver() const;
        void setDTDHandler( QXmlDTDHandler* handler );
        QXmlDTDHandler* DTDHandler() const;
        void setContentHandler( QXmlContentHandler* handler );
        QXmlContentHandler* contentHandler() const;
        void setErrorHandler( QXmlErrorHandler* handler );
        QXmlErrorHandler* errorHandler() const;
        void setLexicalHandler( QXmlLexicalHandler* handler );
        QXmlLexicalHandler* lexicalHandler() const;
        void setDeclHandler( QXmlDeclHandler* handler );
        QXmlDeclHandler* declHandler() const;

        bool parse( const QXmlInputSource& input );
        bool parse( const QXmlInputSource* input );
        virtual bool parse( const QXmlInputSource* input, bool incremental );
        virtual bool parseContinue();

    private:
        // variables
        QXmlContentHandler *contentHnd;
        QXmlErrorHandler   *errorHnd;
        QXmlDTDHandler     *dtdHnd;
        QXmlEntityResolver *entityRes;
        QXmlLexicalHandler *lexicalHnd;
        QXmlDeclHandler    *declHnd;

        QXmlInputSource *inputSource;

        QChar c; // the character at reading position
        int   lineNr; // number of line
        int   columnNr; // position in line

        int     namePos;
        QChar   nameArray[256]; // only used for names
        QString nameValue; // only used for names
        int     refPos;
        QChar   refArray[256]; // only used for references
        QString refValue; // only used for references
        int     stringPos;
        QChar   stringArray[256]; // used for any other strings that are parsed
        QString stringValue; // used for any other strings that are parsed

        QXmlSimpleReaderPrivate* d;

        // inlines
        bool is_S( const QChar& );
        bool is_NameBeginning( const QChar& );
        bool is_NameChar( const QChar& );

        QString& string();
        void stringClear();
        void stringAddC();
        void stringAddC(const QChar&);
        QString& name();
        void nameClear();
        void nameAddC();
        void nameAddC(const QChar&);
        QString& ref();
        void refClear();
        void refAddC();
        void refAddC(const QChar&);

        // used by parseReference() and parsePEReference()
        enum EntityRecognitionContext { InContent, InAttributeValue, InEntityValue, InDTD };

        // private functions
        bool eat_ws();
        bool next_eat_ws();

        void next();
        bool atEnd();

        void init( const QXmlInputSource* i );
        void initData();

        bool entityExist( const QString& ) const;

        bool parseBeginOrContinue( int state, bool incremental );

        bool parseProlog();
        bool parseElement();
        bool processElementEmptyTag();
        bool processElementETagBegin2();
        bool processElementAttribute();
        bool parseMisc();
        bool parseContent();

        bool parsePI();
        bool parseDoctype();
        bool parseComment();

        bool parseName();
        bool parseNmtoken();
        bool parseAttribute();
        bool parseReference();
        bool processReference();

        bool parseExternalID();
        bool parsePEReference();
        bool parseMarkupdecl();
        bool parseAttlistDecl();
        bool parseAttType();
        bool parseAttValue();
        bool parseElementDecl();
        bool parseNotationDecl();
        bool parseChoiceSeq();
        bool parseEntityDecl();
        bool parseEntityValue();

        bool parseString();

        bool insertXmlRef( const QString&, const QString&, bool );

        bool reportEndEntities();
        void reportParseError( const QString& error );

        typedef bool (QXmlSimpleReader::*ParseFunction) ();
        void unexpectedEof( ParseFunction where, int state );
        void parseFailed( ParseFunction where, int state );
        void pushParseState( ParseFunction function, int state );

        friend class QXmlSimpleReaderPrivate;
        friend class QXmlSimpleReaderLocator;
    };

    //
    // SAX Locator
    //

    class QM_EXPORT_XML QXmlLocator
    {
    public:
        QXmlLocator();
        virtual ~QXmlLocator();

        virtual int columnNumber() = 0;
        virtual int lineNumber() = 0;
    //    QString getPublicId()
    //    QString getSystemId()
    };

    //
    // SAX handler classes
    //

    class QM_EXPORT_XML QXmlContentHandler
    {
    public:
        virtual void setDocumentLocator( QXmlLocator* locator ) = 0;
        virtual bool startDocument() = 0;
        virtual bool endDocument() = 0;
        virtual bool startPrefixMapping( const QString& prefix, const QString& uri ) = 0;
        virtual bool endPrefixMapping( const QString& prefix ) = 0;
        virtual bool startElement( const QString& namespaceURI, const QString& localName, const QString& qName, const QXmlAttributes& atts ) = 0;
        virtual bool endElement( const QString& namespaceURI, const QString& localName, const QString& qName ) = 0;
        virtual bool characters( const QString& ch ) = 0;
        virtual bool ignorableWhitespace( const QString& ch ) = 0;
        virtual bool processingInstruction( const QString& target, const QString& data ) = 0;
        virtual bool skippedEntity( const QString& name ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlErrorHandler
    {
    public:
        virtual bool warning( const QXmlParseException& exception ) = 0;
        virtual bool error( const QXmlParseException& exception ) = 0;
        virtual bool fatalError( const QXmlParseException& exception ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlDTDHandler
    {
    public:
        virtual bool notationDecl( const QString& name, const QString& publicId, const QString& systemId ) = 0;
        virtual bool unparsedEntityDecl( const QString& name, const QString& publicId, const QString& systemId, const QString& notationName ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlEntityResolver
    {
    public:
        virtual bool resolveEntity( const QString& publicId, const QString& systemId, QXmlInputSource*& ret ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlLexicalHandler
    {
    public:
        virtual bool startDTD( const QString& name, const QString& publicId, const QString& systemId ) = 0;
        virtual bool endDTD() = 0;
        virtual bool startEntity( const QString& name ) = 0;
        virtual bool endEntity( const QString& name ) = 0;
        virtual bool startCDATA() = 0;
        virtual bool endCDATA() = 0;
        virtual bool comment( const QString& ch ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlDeclHandler
    {
    public:
        virtual bool attributeDecl( const QString& eName, const QString& aName, const QString& type, const QString& valueDefault, const QString& value ) = 0;
        virtual bool internalEntityDecl( const QString& name, const QString& value ) = 0;
        virtual bool externalEntityDecl( const QString& name, const QString& publicId, const QString& systemId ) = 0;
        virtual QString errorString() = 0;
    };

    class QM_EXPORT_XML QXmlDefaultHandler : public QXmlContentHandler, public QXmlErrorHandler, public QXmlDTDHandler, public QXmlEntityResolver, public QXmlLexicalHandler, public QXmlDeclHandler
    {
    public:
        QXmlDefaultHandler() { }
        virtual ~QXmlDefaultHandler() { }

        void setDocumentLocator( QXmlLocator* locator );
        bool startDocument();
        bool endDocument();
        bool startPrefixMapping( const QString& prefix, const QString& uri );
        bool endPrefixMapping( const QString& prefix );
        bool startElement( const QString& namespaceURI, const QString& localName, const QString& qName, const QXmlAttributes& atts );
        bool endElement( const QString& namespaceURI, const QString& localName, const QString& qName );
        bool characters( const QString& ch );
        bool ignorableWhitespace( const QString& ch );
        bool processingInstruction( const QString& target, const QString& data );
        bool skippedEntity( const QString& name );

        bool warning( const QXmlParseException& exception );
        bool error( const QXmlParseException& exception );
        bool fatalError( const QXmlParseException& exception );

        bool notationDecl( const QString& name, const QString& publicId, const QString& systemId );
        bool unparsedEntityDecl( const QString& name, const QString& publicId, const QString& systemId, const QString& notationName );

        bool resolveEntity( const QString& publicId, const QString& systemId, QXmlInputSource*& ret );

        bool startDTD( const QString& name, const QString& publicId, const QString& systemId );
        bool endDTD();
        bool startEntity( const QString& name );
        bool endEntity( const QString& name );
        bool startCDATA();
        bool endCDATA();
        bool comment( const QString& ch );

        bool attributeDecl( const QString& eName, const QString& aName, const QString& type, const QString& valueDefault, const QString& value );
        bool internalEntityDecl( const QString& name, const QString& value );
        bool externalEntityDecl( const QString& name, const QString& publicId, const QString& systemId );

        QString errorString();

    private:
        QXmlDefaultHandlerPrivate *d;
    };

    //
    // inlines
    //

    inline bool QXmlSimpleReader::is_S(const QChar& ch)
    {
        return ch==' ' || ch=='\t' || ch=='\n' || ch=='\r';
    }
    inline bool QXmlSimpleReader::is_NameBeginning( const QChar& ch )
    {
        return ch=='_' || ch==':' ||
    	ch.isLetter() || // ### Category Lm is not allowed
    	ch.category()==QChar::Number_Letter;
    }
    inline bool QXmlSimpleReader::is_NameChar( const QChar& ch )
    {
        return ch=='.' || ch=='-' || ch=='_' || ch==':' ||
        ch.isLetterOrNumber() || // ### Category No is not allowed
        ch.isMark();
    }

    inline bool QXmlSimpleReader::atEnd()
    { return (c.unicode()|0x0001) == 0xffff; }

    inline void QXmlSimpleReader::stringClear()
    { stringValue = ""; stringPos = 0; }
    inline void QXmlSimpleReader::nameClear()
    { nameValue = ""; namePos = 0; }
    inline void QXmlSimpleReader::refClear()
    { refValue = ""; refPos = 0; }

    inline int QXmlAttributes::count() const
    { return length(); }

    #endif //QT_NO_XML

    #endif