/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: DOMTextImpl.cpp 1800911 2017-07-05 18:52:15Z scantor $

 */

#include <xercesc/util/XMLUniDefs.hpp>

#include <xercesc/dom/DOMException.hpp>

#include <xercesc/dom/DOMNode.hpp>

#include <xercesc/dom/DOMElement.hpp>

#include <xercesc/dom/DOMCDATASection.hpp>

#include <xercesc/dom/DOMNodeFilter.hpp>

#include <xercesc/dom/DOMTreeWalker.hpp>

#include "DOMDocumentImpl.hpp"

#include "DOMStringPool.hpp"

#include "DOMTextImpl.hpp"

#include "DOMCharacterDataImpl.hpp"

#include "DOMChildNode.hpp"

#include "DOMRangeImpl.hpp"

#include "DOMCasts.hpp"

#include <assert.h>

XERCES_CPP_NAMESPACE_BEGIN

class DOMDocument;

DOMTextImpl::DOMTextImpl(DOMDocument *ownerDoc, const XMLCh *dat)

    : fNode(this, ownerDoc), fCharacterData(ownerDoc, dat)

{

    fNode.setIsLeafNode(true);

}

DOMTextImpl::

DOMTextImpl(DOMDocument *ownerDoc, const XMLCh* dat, XMLSize_t n)

    : fNode(this, ownerDoc), fCharacterData(ownerDoc, dat, n)

{

    fNode.setIsLeafNode(true);

}

DOMTextImpl::DOMTextImpl(const DOMTextImpl &other, bool)

    : DOMText(other)

    , fNode(this, other.fNode)

    , fCharacterData(other.fCharacterData)

{

    fNode.setIsLeafNode(true);

}

DOMTextImpl::~DOMTextImpl()

{

}

DOMNode *DOMTextImpl::cloneNode(bool deep) const

{

    DOMNode* newNode = new (getOwnerDocument(), DOMMemoryManager::TEXT_OBJECT) DOMTextImpl(*this, deep);

    fNode.callUserDataHandlers(DOMUserDataHandler::NODE_CLONED, this, newNode);

    return newNode;

}

const XMLCh * DOMTextImpl::getNodeName() const {

    static const XMLCh gtext[] = {chPound, chLatin_t, chLatin_e, chLatin_x, chLatin_t, chNull};

    return gtext;

}

DOMNode::NodeType DOMTextImpl::getNodeType() const {

    return DOMNode::TEXT_NODE;

}

DOMText *DOMTextImpl::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->createTextNode(

      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;

}

bool DOMTextImpl::isIgnorableWhitespace() const

{

    return fNode.ignorableWhitespace();

}

void DOMTextImpl::setIgnorableWhitespace(bool ignorable)

{

    fNode.ignorableWhitespace(ignorable);

}

bool DOMTextImpl::getIsElementContentWhitespace() const

{

    return isIgnorableWhitespace();

}

const XMLCh* DOMTextImpl::getWholeText() const

{

    DOMDocument *doc = getOwnerDocument();

    if (!doc) {

        throw DOMException(DOMException::NOT_SUPPORTED_ERR, 0, GetDOMNodeMemoryManager);

        return 0;

    }

    DOMNode* root=doc->getDocumentElement();

    DOMTreeWalker* pWalker=doc->createTreeWalker(root!=NULL?root:(DOMNode*)this, DOMNodeFilter::SHOW_ALL, NULL, true);

    pWalker->setCurrentNode((DOMNode*)this);

    // Logically-adjacent text nodes are Text or CDATASection nodes that can be visited sequentially in document order or in

    // reversed document order without entering, exiting, or passing over Element, Comment, or ProcessingInstruction nodes.

    DOMNode* prevNode;

    while((prevNode=pWalker->previousNode())!=NULL)

    {

        if(prevNode->getNodeType()==ELEMENT_NODE || prevNode->getNodeType()==COMMENT_NODE || prevNode->getNodeType()==PROCESSING_INSTRUCTION_NODE)

            break;

    }

    XMLBuffer buff(1023, GetDOMNodeMemoryManager);

    DOMNode* nextNode;

    while((nextNode=pWalker->nextNode())!=NULL)

    {

        if(nextNode->getNodeType()==ELEMENT_NODE || nextNode->getNodeType()==COMMENT_NODE || nextNode->getNodeType()==PROCESSING_INSTRUCTION_NODE)

            break;

        if(nextNode->getNodeType()==TEXT_NODE || nextNode->getNodeType()==CDATA_SECTION_NODE)

            buff.append(nextNode->getNodeValue());

    }

    pWalker->release();

    XMLCh* wholeString = (XMLCh*)((DOMDocumentImpl*)doc)->allocate((buff.getLen()+1) * sizeof(XMLCh));

    XMLString::copyString(wholeString, buff.getRawBuffer());

    return wholeString;

}

DOMText* DOMTextImpl::replaceWholeText(const XMLCh* newText)

{

    DOMDocument *doc = getOwnerDocument();

    DOMTreeWalker* pWalker=doc->createTreeWalker(doc->getDocumentElement(), DOMNodeFilter::SHOW_ALL, NULL, true);

    pWalker->setCurrentNode((DOMNode*)this);

    // Logically-adjacent text nodes are Text or CDATASection nodes that can be visited sequentially in document order or in

    // reversed document order without entering, exiting, or passing over Element, Comment, or ProcessingInstruction nodes.

    DOMNode* pFirstTextNode=this;

    DOMNode* prevNode;

    while((prevNode=pWalker->previousNode())!=NULL)

    {

        if(prevNode->getNodeType()==ELEMENT_NODE || prevNode->getNodeType()==COMMENT_NODE || prevNode->getNodeType()==PROCESSING_INSTRUCTION_NODE)

            break;

        pFirstTextNode=prevNode;

    }

    // before doing any change we need to check if we are going to remove an entity reference that doesn't contain just text

    DOMNode* pCurrentNode=pWalker->getCurrentNode();

    DOMNode* nextNode;

    while((nextNode=pWalker->nextNode())!=NULL)

    {

        if(nextNode->getNodeType()==ELEMENT_NODE || nextNode->getNodeType()==COMMENT_NODE || nextNode->getNodeType()==PROCESSING_INSTRUCTION_NODE)

            break;

        if(nextNode->getNodeType()==ENTITY_REFERENCE_NODE)

        {

            DOMTreeWalker* pInnerWalker=doc->createTreeWalker(nextNode, DOMNodeFilter::SHOW_ALL, NULL, true);

            while(pInnerWalker->nextNode())

            {

                short nodeType=pInnerWalker->getCurrentNode()->getNodeType();

                if(nodeType!=ENTITY_REFERENCE_NODE && nodeType!=TEXT_NODE && nodeType!=CDATA_SECTION_NODE)

                    throw DOMException(DOMException::NO_MODIFICATION_ALLOWED_ERR, 0, GetDOMNodeMemoryManager);

            }

            pInnerWalker->release();

        }

    }

    DOMText* retVal=NULL;

    // if the first node in the chain is a text node, replace its content, otherwise create a new node

    if(newText && *newText)

    {

        if(!castToNodeImpl(pFirstTextNode)->isReadOnly() && (pFirstTextNode->getNodeType()==TEXT_NODE || pFirstTextNode->getNodeType()==CDATA_SECTION_NODE))

        {

            pFirstTextNode->setNodeValue(newText);

            retVal=(DOMText*)pFirstTextNode;

        }

        else

        {

            if(getNodeType()==TEXT_NODE)

                retVal=doc->createTextNode(newText);

            else

                retVal=doc->createCDATASection(newText);

            pFirstTextNode->getParentNode()->insertBefore(retVal, pFirstTextNode);

        }

    }

    // now delete all the following text nodes

    pWalker->setCurrentNode(pCurrentNode);

    while((nextNode=pWalker->nextNode())!=NULL)

    {

        if(nextNode->getNodeType()==ELEMENT_NODE || nextNode->getNodeType()==COMMENT_NODE || nextNode->getNodeType()==PROCESSING_INSTRUCTION_NODE)

            break;

        if(nextNode!=retVal)

        {

            // keep the tree walker valid

            pWalker->previousNode();

            nextNode->getParentNode()->removeChild(nextNode);

            nextNode->release();

        }

    }

    pWalker->release();

    return retVal;

}

void DOMTextImpl::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::TEXT_OBJECT);

    }

    else {

        // shouldn't reach here

        throw DOMException(DOMException::INVALID_ACCESS_ERR,0, GetDOMNodeMemoryManager);

    }

}

//

//  Delegation functions

//

           DOMNode*         DOMTextImpl::appendChild(DOMNode *newChild)          {return fNode.appendChild (newChild); }

           DOMNamedNodeMap* DOMTextImpl::getAttributes() const                   {return fNode.getAttributes (); }

           DOMNodeList*     DOMTextImpl::getChildNodes() const                   {return fNode.getChildNodes (); }

           DOMNode*         DOMTextImpl::getFirstChild() const                   {return fNode.getFirstChild (); }

           DOMNode*         DOMTextImpl::getLastChild() const                    {return fNode.getLastChild (); }

     const XMLCh*           DOMTextImpl::getLocalName() const                    {return fNode.getLocalName (); }

     const XMLCh*           DOMTextImpl::getNamespaceURI() const                 {return fNode.getNamespaceURI (); }

           DOMNode*         DOMTextImpl::getNextSibling() const                  {return fChild.getNextSibling (); }

     const XMLCh*           DOMTextImpl::getNodeValue() const                    {return fCharacterData.getNodeValue (); }

           DOMDocument*     DOMTextImpl::getOwnerDocument() const                {return fNode.getOwnerDocument (); }

     const XMLCh*           DOMTextImpl::getPrefix() const                       {return fNode.getPrefix (); }

           DOMNode*         DOMTextImpl::getParentNode() const                   {return fChild.getParentNode (this); }

           DOMNode*         DOMTextImpl::getPreviousSibling() const              {return fChild.getPreviousSibling (this); }

           bool             DOMTextImpl::hasChildNodes() const                   {return fNode.hasChildNodes (); }

           DOMNode*         DOMTextImpl::insertBefore(DOMNode *newChild, DOMNode *refChild)

                                                                                 {return fNode.insertBefore (newChild, refChild); }

           void             DOMTextImpl::normalize()                             {fNode.normalize (); }

           DOMNode*         DOMTextImpl::removeChild(DOMNode *oldChild)          {return fNode.removeChild (oldChild); }

           DOMNode*         DOMTextImpl::replaceChild(DOMNode *newChild, DOMNode *oldChild)

                                                                                 {return fNode.replaceChild (newChild, oldChild); }

           bool             DOMTextImpl::isSupported(const XMLCh *feature, const XMLCh *version) const

                                                                                 {return fNode.isSupported (feature, version); }

           void             DOMTextImpl::setPrefix(const XMLCh  *prefix)         {fNode.setPrefix(prefix); }

           bool             DOMTextImpl::hasAttributes() const                   {return fNode.hasAttributes(); }

           bool             DOMTextImpl::isSameNode(const DOMNode* other) const  {return fNode.isSameNode(other); }

           bool             DOMTextImpl::isEqualNode(const DOMNode* arg) const   {return fNode.isEqualNode(arg); }

           void*            DOMTextImpl::setUserData(const XMLCh* key, void* data, DOMUserDataHandler* handler)

                                                                                 {return fNode.setUserData(key, data, handler); }

           void*            DOMTextImpl::getUserData(const XMLCh* key) const     {return fNode.getUserData(key); }

           const XMLCh*     DOMTextImpl::getBaseURI() const                      {return fNode.getBaseURI(); }

           short            DOMTextImpl::compareDocumentPosition(const DOMNode* other) const {return fNode.compareDocumentPosition(other); }

           const XMLCh*     DOMTextImpl::getTextContent() const                  {return fNode.getTextContent(); }

           void             DOMTextImpl::setTextContent(const XMLCh* textContent){fNode.setTextContent(textContent); }

           const XMLCh*     DOMTextImpl::lookupPrefix(const XMLCh* namespaceURI) const  {return fNode.lookupPrefix(namespaceURI); }

           bool             DOMTextImpl::isDefaultNamespace(const XMLCh* namespaceURI) const {return fNode.isDefaultNamespace(namespaceURI); }

           const XMLCh*     DOMTextImpl::lookupNamespaceURI(const XMLCh* prefix) const  {return fNode.lookupNamespaceURI(prefix); }

           void*            DOMTextImpl::getFeature(const XMLCh* feature, const XMLCh* version) const {return fNode.getFeature(feature, version); }

// Macro-in implementation accessors.

DOMNODEIMPL_IMPL(DOMTextImpl);

DOMCHILDIMPL_IMPL(DOMTextImpl);

//

//   Delegation of CharacerData functions.

//

          const XMLCh*      DOMTextImpl::getData() const                         {return fCharacterData.getData();}

          XMLSize_t         DOMTextImpl::getLength() const                       {return fCharacterData.getLength();}

          const XMLCh*      DOMTextImpl::substringData(XMLSize_t offset, XMLSize_t count) const

                                                                                 {return fCharacterData.substringData(this, offset, count);}

          void              DOMTextImpl::appendData(const XMLCh *arg)            {fCharacterData.appendData(this, arg);}

          void              DOMTextImpl::insertData(XMLSize_t offset, const  XMLCh *arg)

                                                                                 {fCharacterData.insertData(this, offset, arg);}

          void              DOMTextImpl::deleteData(XMLSize_t offset, XMLSize_t count)

                                                                                 {fCharacterData.deleteData(this, offset, count);}

          void              DOMTextImpl::replaceData(XMLSize_t offset, XMLSize_t count, const XMLCh *arg)

                                                                                 {fCharacterData.replaceData(this, offset, count, arg);}

          void              DOMTextImpl::setData(const XMLCh *data)              {fCharacterData.setData(this, data);}

          void              DOMTextImpl::setNodeValue(const XMLCh  *nodeValue)   {fCharacterData.setNodeValue (this, nodeValue); }

          void              DOMTextImpl::appendData(const XMLCh *arg, XMLSize_t n) {fCharacterData.appendData(this, arg, n);}

          void              DOMTextImpl::appendDataFast(const XMLCh *arg, XMLSize_t n) {fCharacterData.appendDataFast(this, arg, n);}

XERCES_CPP_NAMESPACE_END