qdom.cpp

奇趣公司比较新的qt/emd版本

    // Variables
    QString m_sys;
    QString m_pub;
};

class QDomEntityPrivate : public QDomNodePrivate
{
public:
    QDomEntityPrivate(QDomDocumentPrivate*, QDomNodePrivate* parent, const QString& name,
                        const QString& pub, const QString& sys, const QString& notation);
    QDomEntityPrivate(QDomEntityPrivate* n, bool deep);

    // Reimplemented from QDomNodePrivate
    QDomNodePrivate* cloneNode(bool deep = true);
    virtual bool isEntity() const { return true; }
    QDomNode::NodeType nodeType() const { return QDomNode::EntityNode; }
    virtual void save(QTextStream& s, int, int) const;

    // Variables
    QString m_sys;
    QString m_pub;
    QString m_notationName;
};

class QDomEntityReferencePrivate : public QDomNodePrivate
{
public:
    QDomEntityReferencePrivate(QDomDocumentPrivate*, QDomNodePrivate* parent, const QString& name);
    QDomEntityReferencePrivate(QDomNodePrivate* n, bool deep);

    // Reimplemented from QDomNodePrivate
    QDomNodePrivate* cloneNode(bool deep = true);
    bool isEntityReference() const { return true; }
    QDomNode::NodeType nodeType() const { return QDomNode::EntityReferenceNode; }
    virtual void save(QTextStream& s, int, int) const;
};

class QDomProcessingInstructionPrivate : public QDomNodePrivate
{
public:
    QDomProcessingInstructionPrivate(QDomDocumentPrivate*, QDomNodePrivate* parent, const QString& target,
                                       const QString& data);
    QDomProcessingInstructionPrivate(QDomProcessingInstructionPrivate* n, bool deep);

    // Reimplemented from QDomNodePrivate
    QDomNodePrivate* cloneNode(bool deep = true);
    virtual bool isProcessingInstruction() const { return true; }
    QDomNode::NodeType nodeType() const { return QDomNode::ProcessingInstructionNode; }
    virtual void save(QTextStream& s, int, int) const;
};

class QDomDocumentPrivate : public QDomNodePrivate
{
public:
    QDomDocumentPrivate();
    QDomDocumentPrivate(const QString& name);
    QDomDocumentPrivate(QDomDocumentTypePrivate* dt);
    QDomDocumentPrivate(QDomDocumentPrivate* n, bool deep);
    ~QDomDocumentPrivate();

    bool setContent(QXmlInputSource *source, bool namespaceProcessing, QString *errorMsg, int *errorLine, int *errorColumn);
    bool setContent(QXmlInputSource *source, QXmlReader *reader, QString *errorMsg, int *errorLine, int *errorColumn);

    // Attributes
    QDomDocumentTypePrivate* doctype() { return type; };
    QDomImplementationPrivate* implementation() { return impl; };
    QDomElementPrivate* documentElement();

    // Factories
    QDomElementPrivate* createElement(const QString& tagName);
    QDomElementPrivate*        createElementNS(const QString& nsURI, const QString& qName);
    QDomDocumentFragmentPrivate* createDocumentFragment();
    QDomTextPrivate* createTextNode(const QString& data);
    QDomCommentPrivate* createComment(const QString& data);
    QDomCDATASectionPrivate* createCDATASection(const QString& data);
    QDomProcessingInstructionPrivate* createProcessingInstruction(const QString& target, const QString& data);
    QDomAttrPrivate* createAttribute(const QString& name);
    QDomAttrPrivate* createAttributeNS(const QString& nsURI, const QString& qName);
    QDomEntityReferencePrivate* createEntityReference(const QString& name);

    QDomNodePrivate* importNode(const QDomNodePrivate* importedNode, bool deep);

    // Reimplemented from QDomNodePrivate
    QDomNodePrivate* cloneNode(bool deep = true);
    bool isDocument() const { return true; }
    QDomNode::NodeType nodeType() const { return QDomNode::DocumentNode; }
    void clear();

    // Variables
    QDomImplementationPrivate* impl;
    QDomDocumentTypePrivate* type;

    void saveDocument(QTextStream& stream, const int indent, QDomNode::EncodingPolicy encUsed) const;
};

/**************************************************************
 *
 * QDomHandler
 *
 **************************************************************/

class QDomHandler : public QXmlDefaultHandler
{
public:
    QDomHandler(QDomDocumentPrivate* d, bool namespaceProcessing);
    ~QDomHandler();

    // content handler
    bool endDocument();
    bool startElement(const QString& nsURI, const QString& localName, const QString& qName, const QXmlAttributes& atts);
    bool endElement(const QString& nsURI, const QString& localName, const QString& qName);
    bool characters(const QString& ch);
    bool processingInstruction(const QString& target, const QString& data);
    bool skippedEntity(const QString& name);

    // error handler
    bool fatalError(const QXmlParseException& exception);

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

    // decl handler
    bool externalEntityDecl(const QString &name, const QString &publicId, const QString &systemId) ;

    // DTD handler
    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) ;

    void setDocumentLocator(QXmlLocator *locator);

    QString errorMsg;
    int errorLine;
    int errorColumn;

private:
    QDomDocumentPrivate *doc;
    QDomNodePrivate *node;
    QString entityName;
    bool cdata;
    bool nsProcessing;
    QXmlLocator *locator;
};

/**************************************************************
 *
 * Functions for verifying legal data
 *
 **************************************************************/
QDomImplementation::InvalidDataPolicy QDomImplementationPrivate::invalidDataPolicy
    = QDomImplementation::AcceptInvalidChars;

// [5] Name ::= (Letter | '_' | ':') (NameChar)*

static QString fixedXmlName(const QString &_name, bool *ok, bool namespaces = false)
{
    QString name, prefix;
    if (namespaces)
        qt_split_namespace(prefix, name, _name, true);
    else
        name = _name;

    if (name.isEmpty()) {
        *ok = false;
        return QString();
    }

    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return _name;
    }

    QString result;
    bool firstChar = true;
    for (int i = 0; i < name.size(); ++i) {
        QChar c = name.at(i);
        if (firstChar) {
            if (QXmlUtils::isLetter(c) || c.unicode() == '_' || c.unicode() == ':') {
                result.append(c);
                firstChar = false;
            } else if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
                *ok = false;
                return QString();
            }
        } else {
            if (QXmlUtils::isNameChar(c))
                result.append(c);
            else if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
                return QString();
                *ok = false;
            }
        }
    }

    if (result.isEmpty()) {
        *ok = false;
        return QString();
    }

    *ok = true;
    if (namespaces && !prefix.isEmpty())
        return prefix + QLatin1Char(':') + result;
    return result;
}

// [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
// '<', '&' and "]]>" will be escaped when writing

static QString fixedCharData(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString result;
    for (int i = 0; i < data.size(); ++i) {
        QChar c = data.at(i);
        if (QXmlUtils::isChar(c)) {
            result.append(c);
        } else if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        }
    }

    *ok = true;
    return result;
};

// [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
// can't escape "--", since entities are not recognised within comments

static QString fixedComment(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString fixedData = fixedCharData(data, ok);
    if (!*ok)
        return QString();

    for (;;) {
        int idx = fixedData.indexOf(QLatin1String("--"));
        if (idx == -1)
            break;
        if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        }
        fixedData.remove(idx, 2);
    }

    *ok = true;
    return fixedData;
}

// [20] CData ::= (Char* - (Char* ']]>' Char*))
// can't escape "]]>", since entities are not recognised within comments

static QString fixedCDataSection(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString fixedData = fixedCharData(data, ok);
    if (!*ok)
        return QString();

    for (;;) {
        int idx = fixedData.indexOf(QLatin1String("]]>"));
        if (idx == -1)
            break;
        if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        }
        fixedData.remove(idx, 3);
    }

    *ok = true;
    return fixedData;
}

// [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'

static QString fixedPIData(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString fixedData = fixedCharData(data, ok);
    if (!*ok)
        return QString();

    for (;;) {
        int idx = fixedData.indexOf(QLatin1String("?>"));
        if (idx == -1)
            break;
        if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        }
        fixedData.remove(idx, 2);
    }

    *ok = true;
    return fixedData;
}

// [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
// The correct quote will be chosen when writing

static QString fixedPubidLiteral(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString result;

    if(QXmlUtils::isPublicID(data))
        result = data;
    else if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
        *ok = false;
        return QString();
    }

    if (result.indexOf(QLatin1Char('\'')) != -1
        && result.indexOf(QLatin1Char('"')) != -1) {
        if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        } else {
            result.remove(QLatin1Char('\''));
        }
    }

    *ok = true;
    return result;
}

// [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
// The correct quote will be chosen when writing

static QString fixedSystemLiteral(const QString &data, bool *ok)
{
    if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::AcceptInvalidChars) {
        *ok = true;
        return data;
    }

    QString result = data;

    if (result.indexOf(QLatin1Char('\'')) != -1
        && result.indexOf(QLatin1Char('"')) != -1) {
        if (QDomImplementationPrivate::invalidDataPolicy == QDomImplementation::ReturnNullNode) {
            *ok = false;
            return QString();
        } else {
            result.remove(QLatin1Char('\''));
        }
    }

    *ok = true;
    return result;
}

/**************************************************************
 *
 * QDomImplementationPrivate
 *
 **************************************************************/

QDomImplementationPrivate* QDomImplementationPrivate::clone()
{
    QDomImplementationPrivate* p = new QDomImplementationPrivate;
    // We are not interested in this node
    p->ref.deref();
    return p;
}

/**************************************************************
 *
 * QDomImplementation
 *
 **************************************************************/

/*!
    \class QDomImplementation
    \reentrant
    \brief The QDomImplementation class provides information about the
    features of the DOM implementation.

    \module XML
    \ingroup xml-tools

    This class describes the features that are supported by the DOM
    implementation. Currently the XML subset of DOM Level 1 and DOM
    Level 2 Core are supported.

    Normally you will use the function QDomDocument::implementation()
    to get the implementation object.

    You can create a new document type with createDocumentType() and a
    new document with createDocument().

    For further information about the Document Object Model see
    \l{http://www.w3.org/TR/REC-DOM-Level-1/}{Level 1} and
    \l{http://www.w3.org/TR/DOM-Level-2-Core/}{Level 2 Core}. For a more
    general introduction of the DOM implementation see the QDomDocument
    documentation.

    \sa hasFeature()
*/

/*!
    Constructs a QDomImplementation object.
*/
QDomImplementation::QDomImplementation()
{
    impl = 0;
}

/*!
    Constructs a copy of \a x.
*/
QDomImplementation::QDomImplementation(const QDomImplementation &x)
{
    impl = x.impl;
    if (impl)
        impl->ref.ref();
}