C++ DOMDocumentImpl类代码示例

/**
 * NON-DOM
 * set the ownerDocument of this node and its children
 */
void DOMDocumentTypeImpl::setOwnerDocument(DOMDocument *doc) {

    if (castToNodeImpl(this)->getOwnerDocument()) {
        fNode.setOwnerDocument(doc);
        fParent.setOwnerDocument(doc);
    }
    else {
        if (doc) {
            DOMDocumentImpl *docImpl = (DOMDocumentImpl *)doc;

            fPublicId = docImpl->cloneString(fPublicId);
            fSystemId = docImpl->cloneString(fSystemId);
            fInternalSubset = docImpl->cloneString(fInternalSubset);
            fName = docImpl->getPooledString(fName);

            fNode.setOwnerDocument(doc);
            fParent.setOwnerDocument(doc);

            DOMNamedNodeMapImpl* entitiesTemp = fEntities->cloneMap(this);
            DOMNamedNodeMapImpl* notationsTemp = fNotations->cloneMap(this);
            DOMNamedNodeMapImpl* elementsTemp = fElements->cloneMap(this);

            fEntities = entitiesTemp;
            fNotations = notationsTemp;
            fElements = elementsTemp;
        }
    }
}

DOMElementNSImpl::DOMElementNSImpl(DOMDocument *ownerDoc,
                                   const XMLCh *namespaceURI,
                                   const XMLCh *prefix,
                                   const XMLCh *localName,
                                   const XMLCh *qualifiedName)
    : DOMElementImpl(ownerDoc, qualifiedName)
{
  this->fSchemaType = 0;

  DOMDocumentImpl* docImpl = (DOMDocumentImpl*)fParent.fOwnerDocument;

  if (prefix == 0 || *prefix == 0)
  {
    fPrefix = 0;
    fLocalName = fName;
  }
  else
  {
    fPrefix = docImpl->getPooledString(prefix);
    fLocalName = docImpl->getPooledString(localName);
  }

  // DOM Level 3: namespace URI is never empty string.
  //
  const XMLCh * URI = DOMNodeImpl::mapPrefix (
    fPrefix,
    (!namespaceURI || !*namespaceURI) ? 0 : namespaceURI,
    DOMNode::ELEMENT_NODE);

  fNamespaceURI = (URI == 0) ? 0 : docImpl->getPooledString(URI);
}

void DOMAttrImpl::setValue(const XMLCh *val)
{
    if (fNode.isReadOnly())
    {
        throw DOMException(DOMException::NO_MODIFICATION_ALLOWED_ERR, 0, GetDOMNodeMemoryManager);
    }

    //  If this attribute was of type ID and in the map, take it out,
    //    then put it back in with the new name.  For now, we don't worry
    //    about what happens if the new name conflicts
    //
    DOMDocumentImpl *doc = (DOMDocumentImpl *)getOwnerDocument();
    if (fNode.isIdAttr())
        doc->getNodeIDMap()->remove(this);

    DOMNode *kid;
    while ((kid = fParent.fFirstChild) != 0)         // Remove existing kids
    {
        DOMNode* node = removeChild(kid);
        if (node)
            node->release();
    }

    if (val != 0)              // Create and add the new one
        appendChild(doc->createTextNode(val));
    fNode.isSpecified(true);
    fParent.changed();

    if (fNode.isIdAttr())
        doc->getNodeIDMap()->add(this);

}

void DOMDocumentTypeImpl::release()
{
    if (fNode.isOwned()) {
        if (fNode.isToBeReleased()) {
            // we are calling from documnet.release() which will notify the user data handler
            if (fIsCreatedFromHeap) {
                DOMDocumentType* docType = this;
                delete docType;
            }
        }
        else
            throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);
    }
    else {
        if (fIsCreatedFromHeap) {
            fNode.callUserDataHandlers(DOMUserDataHandler::NODE_DELETED, 0, 0);
            DOMDocumentType* docType = this;
            delete docType;
        }
        else {
            DOMDocumentImpl* doc = (DOMDocumentImpl*) getOwnerDocument();
            if (doc) {
                fNode.callUserDataHandlers(DOMUserDataHandler::NODE_DELETED, 0, 0);
                doc->release(this, DOMMemoryManager::DOCUMENT_TYPE_OBJECT);
            }
            else {
                // shouldn't reach here
                throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);
            }
        }
    }
}

const XMLCh * DOMAttrImpl::getValue() const
{
    if (fParent.fFirstChild == 0) {
        return XMLUni::fgZeroLenString; // return "";
    }

    // Simple case where attribute value is just a single text node
    DOMNode *node = castToChildImpl(fParent.fFirstChild)->nextSibling;
    if (node == 0 && fParent.fFirstChild->getNodeType() == DOMNode::TEXT_NODE) {
        return fParent.fFirstChild->getNodeValue();
    }

    //
    // Complicated case where attribute value is a DOM tree
    //
    // According to the spec, the child nodes of the Attr node may be either
    // Text or EntityReference nodes.
    //
    // The parser will not create such thing, this is for those created by users.
    //
    // In such case, we have to visit each child to retrieve the text
    //

    DOMDocumentImpl* doc = (DOMDocumentImpl*)fParent.fOwnerDocument;

    XMLBuffer buf(1023, doc->getMemoryManager());
    for (node = fParent.fFirstChild; node != 0; node = castToChildImpl(node)->nextSibling)
        getTextValue(node, buf);

    return doc->getPooledString(buf.getRawBuffer());
}

//
//  splitText.   revist - factor into a common function for use
//                             here and in DOMTextImpl
//
DOMText *DOMCDATASectionImpl::splitText(XMLSize_t offset)
{
    if (fNode.isReadOnly())
    {
        throw DOMException(DOMException::NO_MODIFICATION_ALLOWED_ERR, 0, GetDOMNodeMemoryManager);
    }
    XMLSize_t len = fCharacterData.fDataBuf->getLen();
    if (offset > len)
        throw DOMException(DOMException::INDEX_SIZE_ERR, 0, GetDOMNodeMemoryManager);

    DOMDocumentImpl *doc = (DOMDocumentImpl *)getOwnerDocument();
    DOMText *newText =
      doc->createCDATASection(this->substringData(offset, len - offset));

    DOMNode *parent = getParentNode();
    if (parent != 0)
        parent->insertBefore(newText, getNextSibling());

    fCharacterData.fDataBuf->chop(offset);

    if (doc != 0) {
        Ranges* ranges = doc->getRanges();
        if (ranges != 0) {
            XMLSize_t sz = ranges->size();
            if (sz != 0) {
                for (XMLSize_t i =0; i<sz; i++) {
                    ranges->elementAt(i)->updateSplitInfo( this, newText, offset);
                }
            }
        }
    }

    return newText;
}

XERCES_CPP_NAMESPACE_BEGIN

DOMAttrImpl::DOMAttrImpl(DOMDocument *ownerDoc, const XMLCh *aName)
    : fNode(ownerDoc), fParent (ownerDoc), fSchemaType(0)
{
    DOMDocumentImpl *docImpl = (DOMDocumentImpl *)ownerDoc;
    fName = docImpl->getPooledString(aName);
    fNode.isSpecified(true);
}

void DOMDocumentTypeImpl::setInternalSubset(const XMLCh *value)
{
    DOMDocumentImpl* doc = (DOMDocumentImpl *)castToNodeImpl(this)->getOwnerDocument();
    if (doc != 0)
        fInternalSubset = doc->cloneString(value);
    else {
        XMLMutexLock lock(sDocumentMutex);
        fInternalSubset = ((DOMDocumentImpl *)sDocument)->cloneString(value);
    }
}

void DOMAttrNSImpl::setName(const XMLCh* namespaceURI, const XMLCh* qualifiedName)
{
    DOMDocumentImpl* ownerDoc = (DOMDocumentImpl *) getOwnerDocument();
    const XMLCh * xmlns = DOMNodeImpl::getXmlnsString();
    const XMLCh * xmlnsURI = DOMNodeImpl::getXmlnsURIString();
    this->fName = ownerDoc->getPooledString(qualifiedName);

    int index = DOMDocumentImpl::indexofQualifiedName(qualifiedName);
    if (index < 0)
        throw DOMException(DOMException::NAMESPACE_ERR, 0, GetDOMNodeMemoryManager);

    bool xmlnsAlone = false;	//true if attribute name is "xmlns"
    if (index == 0) {	//qualifiedName contains no ':'
        if (XMLString::equals(this->fName, xmlns)) {
            if (!XMLString::equals(namespaceURI, xmlnsURI))
                throw DOMException(DOMException::NAMESPACE_ERR, 0, GetDOMNodeMemoryManager);
            xmlnsAlone = true;
        }
        this -> fPrefix = 0;
        this -> fLocalName = this -> fName;
    } else {	//0 < index < this->name.length()-1
        XMLCh* newName;
        XMLCh temp[4000];
        if (index >= 3999)
            newName = (XMLCh*) ((DOMDocumentImpl *)this->getOwnerDocument())->getMemoryManager()->allocate
            (
                (XMLString::stringLen(qualifiedName) + 1) * sizeof(XMLCh)
            );//new XMLCh[XMLString::stringLen(qualifiedName)+1];
        else
            newName = temp;

        XMLString::copyNString(newName, fName, index);
        newName[index] = chNull;
        this-> fPrefix = ownerDoc->getPooledString(newName);
        this -> fLocalName = ownerDoc->getPooledString(fName+index+1);

        if (index >= 3999)
            ((DOMDocumentImpl *)this->getOwnerDocument())->getMemoryManager()->deallocate(newName);//delete[] newName;

        // Before we carry on, we should check if the prefix or localName are valid XMLName
        if (!((DOMDocumentImpl *)this->getOwnerDocument())->isXMLName(fPrefix) || !((DOMDocumentImpl *)this->getOwnerDocument())->isXMLName(fLocalName))
            throw DOMException(DOMException::NAMESPACE_ERR, 0, GetDOMNodeMemoryManager);
    }

    // DOM Level 3: namespace URI is never empty string.
    const XMLCh * URI = xmlnsAlone ? xmlnsURI
        : DOMNodeImpl::mapPrefix
          (
              fPrefix,
              (!namespaceURI || !*namespaceURI) ? 0 : namespaceURI,
              DOMNode::ATTRIBUTE_NODE
          );
    this -> fNamespaceURI = (URI == 0) ? 0 : ownerDoc->getPooledString(URI);
}

DOMNode* DOMElementImpl::rename(const XMLCh* namespaceURI, const XMLCh* name)
{
    DOMDocumentImpl* doc = (DOMDocumentImpl*) fParent.fOwnerDocument;

    if (!namespaceURI || !*namespaceURI) {
        fName = doc->getPooledString(name);
        fAttributes->reconcileDefaultAttributes(getDefaultAttributes());

        // and fire user data NODE_RENAMED event
        castToNodeImpl(this)->callUserDataHandlers(DOMUserDataHandler::NODE_RENAMED, this, this);

        return this;
    }
    else {

        // create a new ElementNS
        DOMElementNSImpl* newElem = (DOMElementNSImpl*)doc->createElementNS(namespaceURI, name);

        // transfer the userData
        doc->transferUserData(castToNodeImpl(this), castToNodeImpl(newElem));

        // remove old node from parent if any
        DOMNode* parent = getParentNode();
        DOMNode* nextSib = getNextSibling();
        if (parent) {
            parent->removeChild(this);
        }

        // move children to new node
        DOMNode* child = getFirstChild();
        while (child) {
            removeChild(child);
            newElem->appendChild(child);
            child = getFirstChild();
        }

        // insert new node where old one was
        if (parent) {
            parent->insertBefore(newElem, nextSib);
        }

        // move specified attributes to new node
        newElem->fAttributes->moveSpecifiedAttributes(fAttributes);

        // and fire user data NODE_RENAMED event
        castToNodeImpl(newElem)->callUserDataHandlers(DOMUserDataHandler::NODE_RENAMED, this, newElem);

        return newElem;
    }
}

DOMElementImpl::DOMElementImpl(DOMDocument *ownerDoc, const XMLCh *eName)
    : fNode(ownerDoc), fParent(ownerDoc), fAttributes(0), fDefaultAttributes(0), fSchemaType(0)
{
    DOMDocumentImpl *docImpl = (DOMDocumentImpl *)ownerDoc;
    fName = docImpl->getPooledString(eName);
    setupDefaultAttributes();
    if (!fDefaultAttributes) {
        fDefaultAttributes = new (getOwnerDocument()) DOMAttrMapImpl(this);
        fAttributes = new (getOwnerDocument()) DOMAttrMapImpl(this);
    }
    else {
        fAttributes = new (getOwnerDocument()) DOMAttrMapImpl(this, fDefaultAttributes);
    }
}

void DOMCharacterDataImpl::insertData(const DOMNode *node, XMLSize_t offset, const XMLCh *dat)
{
    if (castToNodeImpl(node)->isReadOnly())
        throw DOMException(
        DOMException::NO_MODIFICATION_ALLOWED_ERR, 0, GetDOMCharacterDataImplMemoryManager);

    // Note: the C++ XMLCh * operation throws the correct DOMExceptions
    //       when parameter values are bad.
    //

    XMLSize_t len = fDataBuf->getLen();
    if (offset > len)
        throw DOMException(DOMException::INDEX_SIZE_ERR, 0, GetDOMCharacterDataImplMemoryManager);

    XMLSize_t datLen = XMLString::stringLen(dat);

    XMLSize_t newLen = len + datLen;

    XMLCh* newString;
    XMLCh temp[4096];
    if (newLen >= 4095)
        newString = (XMLCh*) XMLPlatformUtils::fgMemoryManager->allocate
        (
            (newLen + 1) * sizeof(XMLCh)
        );//new XMLCh[newLen+1];
    else
        newString = temp;

    XMLString::copyNString(newString, fDataBuf->getRawBuffer(), offset);
    XMLString::copyNString(newString+offset, dat, datLen);
    XMLString::copyString(newString+offset+datLen, fDataBuf->getRawBuffer()+offset);

    fDataBuf->set(newString);

    if (newLen >= 4095)
        XMLPlatformUtils::fgMemoryManager->deallocate(newString);//delete[] newString;

    DOMDocumentImpl *doc = (DOMDocumentImpl *)node->getOwnerDocument();
    if (doc != 0) {
        Ranges* ranges = doc->getRanges();
        if (ranges != 0) {
            XMLSize_t sz = ranges->size();
            if (sz != 0) {
                for (XMLSize_t i =0; i<sz; i++) {
                    ranges->elementAt(i)->updateRangeForInsertedText( (DOMNode*)node, offset, datLen);
                }
            }
        }
    }
}

void DOMNotationImpl::release()
{
    if (fNode.isOwned() && !fNode.isToBeReleased())
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);

    DOMDocumentImpl* doc = (DOMDocumentImpl*) getOwnerDocument();
    if (doc) {
        fNode.callUserDataHandlers(DOMUserDataHandler::NODE_DELETED, 0, 0);
        doc->release(this, DOMMemoryManager::NOTATION_OBJECT);
    }
    else {
        // shouldn't reach here
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);
    }
}

void DOMEntityReferenceImpl::release()
{
    if (fNode.isOwned() && !fNode.isToBeReleased())
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);

    DOMDocumentImpl* doc = (DOMDocumentImpl*) fParent.fOwnerDocument;
    if (doc) {
        fNode.callUserDataHandlers(DOMUserDataHandler::NODE_DELETED, 0, 0);
        fParent.release();
        doc->release(this, DOMMemoryManager::ENTITY_REFERENCE_OBJECT);
    }
    else {
        // shouldn't reach here
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);
    }
}

void DOMProcessingInstructionImpl::release()
{
    if (fNode.isOwned() && !fNode.isToBeReleased())
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);

    DOMDocumentImpl* doc = (DOMDocumentImpl*) getOwnerDocument();
    if (doc) {
        fNode.callUserDataHandlers(DOMUserDataHandler::NODE_DELETED, 0, 0);
        fCharacterData.releaseBuffer();
        doc->release(this, DOMMemoryManager::PROCESSING_INSTRUCTION_OBJECT);
    }
    else {
        // shouldn't reach here
        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);
    }
}