C++ QDomNode::namespaceURI方法代码示例

bool TestBaseLine::isDeepEqual(const QDomNode &n1, const QDomNode &n2)
{
    if(n1.nodeType() != n2.nodeType())
        return false;

    switch(n1.nodeType())
    {
        case QDomNode::CommentNode:
        /* Fallthrough. */
        case QDomNode::TextNode:
        {
            return static_cast<const QDomCharacterData &>(n1).data() ==
                   static_cast<const QDomCharacterData &>(n2).data();
        }
        case QDomNode::ProcessingInstructionNode:
        {
            return n1.nodeName() == n2.nodeName() &&
                   n1.nodeValue() == n2.nodeValue();
        }
        case QDomNode::DocumentNode:
            return isChildrenDeepEqual(n1.childNodes(), n2.childNodes());
        case QDomNode::ElementNode:
        {
            return n1.localName() == n2.localName()                     &&
                   n1.namespaceURI() == n2.namespaceURI()               &&
                   n1.nodeName() == n2.nodeName()                       && /* Yes, this one is needed in addition to localName(). */
                   isAttributesEqual(n1.attributes(), n2.attributes())  &&
                   isChildrenDeepEqual(n1.childNodes(), n2.childNodes());
        }
        /* Fallthrough all these. */
        case QDomNode::EntityReferenceNode:
        case QDomNode::CDATASectionNode:
        case QDomNode::EntityNode:
        case QDomNode::DocumentTypeNode:
        case QDomNode::DocumentFragmentNode:
        case QDomNode::NotationNode:
        case QDomNode::BaseNode:
        case QDomNode::CharacterDataNode:
        {
            Q_ASSERT_X(false, Q_FUNC_INFO,
                       "An unsupported node type was encountered.");
            return false;
        }
        case QDomNode::AttributeNode:
        {
            Q_ASSERT_X(false, Q_FUNC_INFO,
                       "This should never happen. QDom doesn't allow us to compare DOM attributes "
                       "properly.");
            return false;
        }
        default:
        {
            Q_ASSERT_X(false, Q_FUNC_INFO, "Unhandled QDom::NodeType value.");
            return false;
        }
    }
}

QString QDomNodeProto:: namespaceURI() const
{
  QDomNode *item = qscriptvalue_cast<QDomNode*>(thisObject());
  if (item)
    return item->namespaceURI();
  return QString();
}

void cleanMathml(QDomElement pElement)
{
    // Clean up the current element
    // Note: the idea is to remove all the attributes that are not in the
    //       MathML namespace. Indeed, if we were to leave them in then the XSL
    //       transformation would either do nothing or, worst, crash OpenCOR...

    static const QString MathmlNamespace = "http://www.w3.org/1998/Math/MathML";

    QDomNamedNodeMap attributes = pElement.attributes();
    QList<QDomNode> nonMathmlAttributes = QList<QDomNode>();

    for (int i = 0, iMax = attributes.count(); i < iMax; ++i) {
        QDomNode attribute = attributes.item(i);

        if (attribute.namespaceURI().compare(MathmlNamespace))
            nonMathmlAttributes << attribute;
    }

    foreach (QDomNode nonMathmlAttribute, nonMathmlAttributes)
        pElement.removeAttributeNode(nonMathmlAttribute.toAttr());

    // Go through the element's child elements, if any, and clean them up

    for (QDomElement childElement = pElement.firstChildElement();
         !childElement.isNull(); childElement = childElement.nextSiblingElement()) {
        cleanMathml(childElement);
    }
}

// stripExtraNS
//
// This function removes namespace information from various nodes for
// display purposes only (the element is pretty much useless for processing
// after this).  We do this because QXml is a bit overzealous about outputting
// redundant namespaces.
static QDomElement stripExtraNS(const QDomElement &e)
{
	// find closest parent with a namespace
	QDomNode par = e.parentNode();
	while(!par.isNull() && par.namespaceURI().isNull())
		par = par.parentNode();
	bool noShowNS = false;
	if(!par.isNull() && par.namespaceURI() == e.namespaceURI())
		noShowNS = true;

	// build qName (prefix:localName)
	QString qName;
	if(!e.prefix().isEmpty())
		qName = e.prefix() + ':' + e.localName();
	else
		qName = e.tagName();

	QDomElement i;
	int x;
	if(noShowNS)
		i = e.ownerDocument().createElement(qName);
	else
		i = e.ownerDocument().createElementNS(e.namespaceURI(), qName);

	// copy attributes
	QDomNamedNodeMap al = e.attributes();
	for(x = 0; x < al.count(); ++x) {
		QDomAttr a = al.item(x).cloneNode().toAttr();

		// don't show xml namespace
		if(a.namespaceURI() == NS_XML)
			i.setAttribute(QString("xml:") + a.name(), a.value());
		else
			i.setAttributeNodeNS(a);
	}

	// copy children
	QDomNodeList nl = e.childNodes();
	for(x = 0; x < nl.count(); ++x) {
		QDomNode n = nl.item(x);
		if(n.isElement())
			i.appendChild(stripExtraNS(n.toElement()));
		else
			i.appendChild(n.cloneNode());
	}
	return i;
}

bool TestBaseLine::isAttributesEqual(const QDomNamedNodeMap &cl1, const QDomNamedNodeMap &cl2)
{
    const unsigned int len = cl1.length();
    pDebug() << "LEN:" << len;

    if(len == cl2.length())
    {
        for(unsigned int i1 = 0; i1 < len; ++i1)
        {
            const QDomNode attr1(cl1.item(i1));
            Q_ASSERT(!attr1.isNull());

            /* This is set if attr1 cannot be found at all in cl2. */
            bool earlyExit = false;

            for(unsigned int i2 = 0; i2 < len; ++i2)
            {
                const QDomNode attr2(cl2.item(i2));
                Q_ASSERT(!attr2.isNull());
                pDebug() << "ATTR1:" << attr1.localName() << attr1.namespaceURI() << attr1.prefix() << attr1.nodeName();
                pDebug() << "ATTR2:" << attr2.localName() << attr2.namespaceURI() << attr2.prefix() << attr2.nodeName();

                if(attr1.localName() == attr2.localName()       &&
                   attr1.namespaceURI() == attr2.namespaceURI() &&
                   attr1.prefix() == attr2.prefix()             &&
                   attr1.nodeName() == attr2.nodeName()         && /* Yes, needed in addition to all the other. */
                   attr1.nodeValue() == attr2.nodeValue())
                {
                    earlyExit = true;
                    break;
                }
            }

            if(!earlyExit)
            {
                /* An attribute was found that doesn't exist in the other list so exit. */
                return false;
            }
        }

        return true;
    }
    else
        return false;
}

static QDomElement oldStyleNS(const QDomElement &e)
{
	// find closest parent with a namespace
	QDomNode par = e.parentNode();
	while(!par.isNull() && par.namespaceURI().isNull())
		par = par.parentNode();
	bool noShowNS = false;
	if(!par.isNull() && par.namespaceURI() == e.namespaceURI())
		noShowNS = true;

	QDomElement i;
	uint x;
	//if(noShowNS)
		i = e.ownerDocument().createElement(e.tagName());
	//else
	//	i = e.ownerDocument().createElementNS(e.namespaceURI(), e.tagName());

	// copy attributes
	QDomNamedNodeMap al = e.attributes();
	for(x = 0; x < al.count(); ++x)
		i.setAttributeNode(al.item(x).cloneNode().toAttr());

	if(!noShowNS)
		i.setAttribute("xmlns", e.namespaceURI());

	// copy children
	QDomNodeList nl = e.childNodes();
	for(x = 0; x < nl.count(); ++x) {
		QDomNode n = nl.item(x);
		if(n.isElement())
			i.appendChild(oldStyleNS(n.toElement()));
		else
			i.appendChild(n.cloneNode());
	}
	return i;
}

void BasicProtocol::extractStreamError(const QDomElement &e)
{
	QString text;
	QDomElement appSpec;

	QDomElement t = firstChildElement(e);
	if(t.isNull() || t.namespaceURI() != NS_STREAMS) {
		// probably old-style error
		errCond = -1;
		errText = e.text();
	}
	else
		errCond = stringToStreamCond(t.tagName());

	if(errCond != -1) {
		if(errCond == SeeOtherHost)
			otherHost = t.text();

		t = e.elementsByTagNameNS(NS_STREAMS, "text").item(0).toElement();
		if(!t.isNull())
			text = t.text();

		// find first non-standard namespaced element
		QDomNodeList nl = e.childNodes();
		for(int n = 0; n < nl.count(); ++n) {
			QDomNode i = nl.item(n);
			if(i.isElement() && i.namespaceURI() != NS_STREAMS) {
				appSpec = i.toElement();
				break;
			}
		}

		errText = text;
		errAppSpec = appSpec;
	}
}

/**
	\brief Reads the error from XML

	This function finds and reads the error element \a e.

	You need to provide the base namespace of the stream which this stanza belongs to
	(probably by using stream.baseNS() function).
*/
bool Stanza::Error::fromXml(const QDomElement &e, const QString &baseNS)
{
	if(e.tagName() != "error" && e.namespaceURI() != baseNS)
		return false;

	// type
	type = Private::stringToErrorType(e.attribute("type"));

	// condition
	QDomNodeList nl = e.childNodes();
	QDomElement t;
	condition = -1;
	int n;
	for(n = 0; n < nl.count(); ++n) {
		QDomNode i = nl.item(n);
		t = i.toElement();
		if(!t.isNull()) {
			// FIX-ME: this shouldn't be needed
			if(t.namespaceURI() == NS_STANZAS || t.attribute("xmlns") == NS_STANZAS) {
				condition = Private::stringToErrorCond(t.tagName());
				if (condition != -1)
					break;
			}
		}
	}

	// code
	originalCode = e.attribute("code").toInt();

	// try to guess type/condition
	if(type == -1 || condition == -1) {
		QPair<int, int> guess(-1, -1);
		if (originalCode)
			guess = Private::errorCodeToTypeCond(originalCode);

		if (type == -1)
			type = guess.first != -1 ? guess.first : Cancel;
		if (condition == -1)
			condition = guess.second != -1 ? guess.second : UndefinedCondition;
	}

	// text
	t = e.elementsByTagNameNS(NS_STANZAS, "text").item(0).toElement();
	if(!t.isNull())
		text = t.text().trimmed();
	else
		text = e.text().trimmed();

	// appspec: find first non-standard namespaced element
	appSpec = QDomElement();
	nl = e.childNodes();
	for(n = 0; n < nl.count(); ++n) {
		QDomNode i = nl.item(n);
		if(i.isElement() && i.namespaceURI() != NS_STANZAS) {
			appSpec = i.toElement();
			break;
		}
	}

	return true;
}