DOMWriterImpl.cpp

            DOMNodeFilter::FilterAction filterAction = checkFilter(nodeToWrite);

            if ( filterAction == DOMNodeFilter::FILTER_REJECT)
                break;

            if (!lineFeedInTextNodePrinted)
            {
                if(level == 1)
                    printNewLine();

                printNewLine();
            }
            else
            {
                lineFeedInTextNodePrinted = false;
            }

            printIndent(level);

            //track the line number the current node begins on
            int nodeLine = fCurrentLine;

            // add an entry in the namespace stack
            RefHashTableOf<XMLCh>* namespaceMap=NULL;

            if ( filterAction == DOMNodeFilter::FILTER_ACCEPT)
            {
                //           this element    attributes   child elements
                // accept        yes             yes           yes
                // skip          no              no            yes
                //
                TRY_CATCH_THROW
                (
                // The name has to be representable without any escapes
                    *fFormatter  << XMLFormatter::NoEscapes
                                 << chOpenAngle << nodeName;
                    ,true
                )

                // Output any attributes on this element
                setURCharRef();
                DOMNamedNodeMap *attributes = nodeToWrite->getAttributes();
                int attrCount = attributes->getLength();

                // check if the namespace for the current node is already defined
                const XMLCh* prefix = nodeToWrite->getPrefix();
                const XMLCh* uri = nodeToWrite->getNamespaceURI();
                if(uri && uri[0])
                {
                    if(prefix==0 || prefix[0]==0)
                        prefix=XMLUni::fgZeroLenString;
                    bool bPrefixDeclared=false;
                    for(int i=fNamespaceStack->size()-1;i>=0;i--)
                    {
                        RefHashTableOf<XMLCh>* curNamespaceMap=fNamespaceStack->elementAt(i);
                        const XMLCh* thisUri=curNamespaceMap->get((void*)prefix);
                        if(thisUri && XMLString::equals(thisUri,nodeToWrite->getNamespaceURI()))
                        {
                            bPrefixDeclared=true;
                            break;
                        }
                    }
                    if(!bPrefixDeclared)
                    {
                        if(namespaceMap==NULL)
                        {
                            namespaceMap=new (fMemoryManager) RefHashTableOf<XMLCh>(12, false, fMemoryManager);
                            fNamespaceStack->addElement(namespaceMap);
                        }
                        namespaceMap->put((void*)prefix,(XMLCh*)nodeToWrite->getNamespaceURI());
                        *fFormatter  << XMLFormatter::NoEscapes
                                     << chSpace << XMLUni::fgXMLNSString;
                        if(!XMLString::equals(prefix,XMLUni::fgZeroLenString))
                            *fFormatter  << chColon << prefix;
                        *fFormatter  << chEqual << chDoubleQuote
                                     << XMLFormatter::AttrEscapes
                                     << nodeToWrite->getNamespaceURI()
                                     << XMLFormatter::NoEscapes
                                     << chDoubleQuote;
                    }
                }

                bool discard = getFeature(DISCARD_DEFAULT_CONTENT_ID);
                for (int i = 0; i < attrCount; i++)
                {
                    DOMAttrSPtr  attribute = (DOMAttr*)attributes->item(i);

                    // Not to be shown to Filter

                    //
                    //"discard-default-content"
                    //    true
                    //    [required] (default)
                    //    Use whatever information available to the implementation
                    //  (i.e. XML schema, DTD, the specified flag on Attr nodes,
                    //  and so on) to decide what attributes and content should be
                    //  discarded or not.
                    //  Note that the specified flag on Attr nodes in itself is
                    //  not always reliable, it is only reliable when it is set
                    //  to false since the only case where it can be set to false
                    //  is if the attribute was created by the implementation.
                    //  The default content won't be removed if an implementation
                    //  does not have any information available.
                    //    false
                    //    [required]
                    //    Keep all attributes and all content.
                    //
                    if (discard && !((DOMAttr*)attribute )->getSpecified())
                        continue;
                    //
                    //  Again the name has to be completely representable. But the
                    //  attribute can have refs and requires the attribute style
                    //  escaping.
                    //

                    // if this attribute is a namespace declaration, add it to the namespace map for the current level
                    const XMLCh* ns = attribute->getNamespaceURI();
                    if (ns != 0 )
                    {
                        if(XMLString::equals(ns, XMLUni::fgXMLNSURIName)) 
                        {
                            if(namespaceMap==NULL)
                            {
                                namespaceMap=new (fMemoryManager) RefHashTableOf<XMLCh>(12, false, fMemoryManager);
                                fNamespaceStack->addElement(namespaceMap);
                            }
			                const XMLCh* nsPrefix = attribute->getLocalName();
                            if(XMLString::equals(attribute->getNodeName(),XMLUni::fgXMLNSString))
								nsPrefix = XMLUni::fgZeroLenString;
							if(namespaceMap->containsKey((void*)nsPrefix))
								continue;
                            namespaceMap->put((void*)attribute->getLocalName(),(XMLCh*)attribute->getNodeValue());
                        }
                        else if(!XMLString::equals(ns, XMLUni::fgXMLURIName)) 
                        {
                            // check if the namespace for the current node is already defined
                            const XMLCh* prefix = attribute->getPrefix();
                            if(prefix && prefix[0])
                            {
                                bool bPrefixDeclared=false;
                                for(int i=fNamespaceStack->size()-1;i>=0;i--)
                                {
                                    RefHashTableOf<XMLCh>* curNamespaceMap=fNamespaceStack->elementAt(i);
                                    const XMLCh* thisUri=curNamespaceMap->get((void*)prefix);
                                    if(thisUri && XMLString::equals(thisUri,attribute->getNamespaceURI()))
                                    {
                                        bPrefixDeclared=true;
                                        break;
                                    }
                                }
                                if(!bPrefixDeclared)
                                {
                                    if(namespaceMap==NULL)
                                    {
                                        namespaceMap=new (fMemoryManager) RefHashTableOf<XMLCh>(12, false, fMemoryManager);
                                        fNamespaceStack->addElement(namespaceMap);
                                    }
                                    namespaceMap->put((void*)prefix,(XMLCh*)attribute->getNamespaceURI());
                                    *fFormatter  << XMLFormatter::NoEscapes
                                                 << chSpace << XMLUni::fgXMLNSString << chColon << prefix
                                                 << chEqual << chDoubleQuote
                                                 << XMLFormatter::AttrEscapes
                                                 << attribute->getNamespaceURI()
                                                 << XMLFormatter::NoEscapes
                                                 << chDoubleQuote;
                                }
                            }
                        }
                    }
                    *fFormatter  << XMLFormatter::NoEscapes
                                 << chSpace << attribute->getNodeName()
                                 << chEqual << chDoubleQuote
                                 << XMLFormatter::AttrEscapes
                                 << attribute->getNodeValue()
                                 << XMLFormatter::NoEscapes
                                 << chDoubleQuote;
                } // end of for
            } // end of FILTER_ACCEPT

            level++;

            // FILTER_SKIP may start from here

            //
            //  Test for the presence of children, which includes both
            //  text content and nested elements.
            //
            DOMNodeSPtr child = nodeToWrite->getFirstChild();
            if (child != 0)
            {
                // There are children. Close start-tag, and output children.
                // No escapes are legal here
                if (filterAction == DOMNodeFilter::FILTER_ACCEPT)
                    *fFormatter << XMLFormatter::NoEscapes << chCloseAngle;

                while( child != 0)
                {
                    processNode(child, level);
                    child = child->getNextSibling();
                }

                level--;

                if (filterAction == DOMNodeFilter::FILTER_ACCEPT)
                {
                    //if we are not on the same line as when we started
                    //this node then print a new line and indent
                    if(nodeLine != fCurrentLine)
                    {
                        if (!lineFeedInTextNodePrinted)
                        {
                            printNewLine();
                        }
                        else
                        {
                            lineFeedInTextNodePrinted = false;
                        }

                        if(nodeLine != fCurrentLine && level == 0)
                            printNewLine();

                        printIndent(level);
                    }
                    TRY_CATCH_THROW
                    (
                         *fFormatter << XMLFormatter::NoEscapes << gEndElement
                                     << nodeName << chCloseAngle;
                        ,true
                    )

                }
            }
            else
            {
                level--;

                //
                //  There were no children. Output the short form close of
                //  the element start tag, making it an empty-element tag.
                //
                if (filterAction == DOMNodeFilter::FILTER_ACCEPT)
                {
                    TRY_CATCH_THROW
                    (
                        *fFormatter << XMLFormatter::NoEscapes << chForwardSlash << chCloseAngle;
                       , true
                    )
                }
            }

            // remove the namespace map at this level
            if(namespaceMap!=NULL)
                fNamespaceStack->removeLastElement();

            break;
        }
    case DOMNode::ATTRIBUTE_NODE:
        {
            if (checkFilter(nodeToWrite) != DOMNodeFilter::FILTER_ACCEPT)
                break;

            const XMLCh* localName = nodeToWrite->getLocalName();

            // check if this is a DOM Level 1 Node
            if(localName == 0) {
                *fFormatter  << XMLFormatter::NoEscapes
                             << nodeToWrite->getNodeName()
                             << chEqual << chDoubleQuote
                             << XMLFormatter::AttrEscapes
                             << nodeToWrite->getNodeValue()
                             << XMLFormatter::NoEscapes
                             << chDoubleQuote;
            } else {
                *fFormatter  << XMLFormatter::NoEscapes
                             << chOpenCurly << nodeToWrite->getNamespaceURI() 
                             << chCloseCurly << localName
                             << chEqual << chDoubleQuote
                             << XMLFormatter::AttrEscapes
                             << nodeToWrite->getNodeValue()
                             << XMLFormatter::NoEscapes
                             << chDoubleQuote;
            }

            break;
        }
    case DOMNode::ENTITY_REFERENCE_NODE:
        {
            //"entities"
            //true
            //[required] (default)
            //Keep EntityReference and Entity nodes in the document.

            //false
            //[optional]
            //Remove all EntityReference and Entity nodes from the document,
            //       putting the entity expansions directly in their place.
            //       Text nodes are into "normal" form.
            //Only EntityReference nodes to non-defined entities are kept in the document.

            if (checkFilter(nodeToWrite) != DOMNodeFilter::FILTER_ACCEPT)
                break;

            if (getFeature(ENTITIES_ID))
            {
                TRY_CATCH_THROW
                (
                    *fFormatter << XMLFormatter::NoEscapes << chAmpersand
                                << nodeName << chSemiColon;
                    , true
                )
            }
            else
            {
                // check if the referenced entity is defined or not
                if (nodeToWrite->getOwnerDocument()->getDoctype()->getEntities()->getNamedItem(nodeName))
                {
                    DOMNodeSPtr child;
                    for (child = nodeToWrite->getFirstChild();
                    child != 0;
                    child = child->getNextSibling())
                    {
                        processNode(child, level);
                    }
                }
                else
                {
                    TRY_CATCH_THROW
                   (
                        *fFormatter<<XMLFormatter::NoEscapes<<chAmpersand<<nodeName<<chSemiColon;
                        , true
                    )
                }
            }
            break;
        }

        //
        //  feature:split_cdata_sections     occurence of ]]>   unrep-char
        //  ===============================================================
        //          true                        split            split
        //          false                       fails            fails
        //
    case DOMNode::CDATA_SECTION_NODE:
        {
            if (checkFilter(nodeToWrite) != DOMNodeFilter::FILTER_ACCEPT)
                break;

            if(level == 1)
                printNewLine();

            printNewLine();
            printIndent(level);

            if (getFeature(SPLIT_CDATA_SECTIONS_ID))
            {
                // it is fairly complicated and we process this
                // in a separate function.
                procCdataSection(nodeValue, nodeToWrite, level);
            }
            else
            {
                // search for "]]>", the node value is not supposed to have this
                if (XMLString::patternMatch((XMLCh* const) nodeValue, gEndCDATA) != -1)
                {
                    reportError(nodeToWrite, DOMError::DOM_SEVERITY_FATAL_ERROR, XMLDOMMsg::Writer_NestedCDATA);
                }

                TRY_CATCH_THROW
                (
                    // transcoder throws exception for unrep chars
                    *fFormatter << XMLFormatter::NoEscapes << gStartCDATA << nodeValue << gEndCDATA;
                   , true
                )
            }

            break;
        }

    case DOMNode::COMMENT_NODE:
        {
            if (checkFilter(nodeToWrite) != DOMNodeFilter::FILTER_ACCEPT)
                break;

            if(level == 1)
                printNewLine();

            printNewLine();
            printIndent(level);

            TRY_CATCH_THROW
            (
                *fFormatter << XMLFormatter::NoEscapes << gStartComment
                << nodeValue << gEndComment;
                , true
            )
            break;
        }

    case DOMNode::DOCUMENT_TYPE_NODE:  // Not to be shown to Filter
        {
            const DOMDocumentType *doctype = (const DOMDocumentType *)nodeToWrite;

            fFormatter->setEscapeFlags(XMLFormatter::NoEscapes);

            printNewLine();
            printIndent(level);

            TRY_CATCH_THROW
            (
                *fFormatter << gStartDoctype << nodeName;

                const XMLCh  *id = doctype->getPublicId();
                if (id && *id)
                {
                    *fFormatter << chSpace << gPublic << id << chDoubleQuote;

                    id = doctype->getSystemId();
                    if (id && *id)
                    {
                        *fFormatter << chSpace << chDoubleQuote << id << chDoubleQuote;
                    }
                    else
                    {
                        //
                        // 4.2.2 External Entities
                        // [Definition: If the entity is not internal,
                        //           it is an external entity, declared as follows:]
                        // External Entity Declaration
                        // [75] ExternalID ::= 'SYSTEM' S SystemLiteral
                        //                   | 'PUBLIC' S PubidLiteral S SystemLiteral
                        //
                        reportError(nodeToWrite, DOMError::DOM_SEVERITY_FATAL_ERROR, XMLDOMMsg::Writer_NotRecognizedType);
                        // systemLiteral not found
                    }
                }
                else
                {
                    id = doctype->getSystemId();
                    if (id && *id)
                    {
                        *fFormatter << chSpace << gSystem << id << chDoubleQuote;
                    }
                }

                id = doctype->getInternalSubset();
                if (id && *id)
                {
                    *fFormatter << chSpace << chOpenSquare << id << chCloseSquare;
                }

                *fFormatter << chCloseAngle;
                , true

            ) // end of TRY_CATCH_THROW

            break;
        }

    case DOMNode::ENTITY_NODE:  // Not to be shown to Filter
        {
            //
            // REVISIT: how does the feature "entities" impact
            // entity node?
            //
            printNewLine();
            printIndent(level);

            fFormatter->setEscapeFlags(XMLFormatter::NoEscapes);
            *fFormatter << gStartEntity    << nodeName;

            const XMLCh * id = ((const DOMEntity*)nodeToWrite)->getPublicId();
            if (id)
                *fFormatter << gPublic << id << chDoubleQuote;

            id = ((const DOMEntity*)nodeToWrite)->getSystemId();
            if (id)
                *fFormatter << gSystem << id << chDoubleQuote;

            id = ((const DOMEntity*)nodeToWrite)->getNotationName();
            if (id)
                *fFormatter << gNotation << id << chDoubleQuote;

            *fFormatter << chCloseAngle;

            break;
        }

    default:
        /***
            This is an implementation specific behaviour, we abort if a user derived class has not dealt with
            this node type.
         ***/
        {
            if(!customNodeSerialize(nodeToWrite, level)) {
                reportError(nodeToWrite, DOMError::DOM_SEVERITY_FATAL_ERROR, XMLDOMMsg::Writer_NotRecognizedType);
                // UnreognizedNodeType;
            }
        }

        break;
    }

}

bool DOMWriterImpl::customNodeSerialize(const DOMNode* const, int) {
    return false;
}

//
//
DOMNodeFilter::FilterAction DOMWriterImpl::checkFilter(const DOMNode* const node) const
{
    if (!fFilter ||
        ((fFilter->getWhatToShow() & (1 << (node->getNodeType() - 1))) == 0))
        return DOMNodeFilter::FILTER_ACCEPT;

    //
    // if and only if there is a filter, and it is interested
    // in the node type, then we pass the node to the filter
    // for examination
    //
    return (DOMNodeFilter::FilterAction) fFilter->acceptNode(node);
}


bool DOMWriterImpl::checkFeature(const XMLCh* const featName
                               , bool               toThrow
                               , int&               featureId) const
{
    // check for null and/or empty feature name
    if (!featName || !*featName)
    {
        if (toThrow)
            throw DOMException(DOMException::NOT_FOUND_ERR, 0, fMemoryManager);

        return false;
    }

    featureId = INVALID_FEATURE_ID;

    if (XMLString::equals(featName, XMLUni::fgDOMWRTCanonicalForm))
        featureId = CANONICAL_FORM_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTDiscardDefaultContent))
        featureId = DISCARD_DEFAULT_CONTENT_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTEntities))
        featureId = ENTITIES_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTFormatPrettyPrint))
        featureId = FORMAT_PRETTY_PRINT_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTNormalizeCharacters))
        featureId = NORMALIZE_CHARACTERS_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTSplitCdataSections))
        featureId = SPLIT_CDATA_SECTIONS_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTValidation))
        featureId = VALIDATION_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTWhitespaceInElementContent))
        featureId = WHITESPACE_IN_ELEMENT_CONTENT_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMWRTBOM))
        featureId = BYTE_ORDER_MARK_ID;
    else if (XMLString::equals(featName, XMLUni::fgDOMXMLDeclaration))
        featureId = XML_DECLARATION;


    //feature name not resolvable
    if (featureId == INVALID_FEATURE_ID)
    {
        if (toThrow)
            throw DOMException(DOMException::NOT_FOUND_ERR, featName, fMemoryManager);

        return false;
    }

    return true;
}

bool DOMWriterImpl::reportError(const DOMNode* const    errorNode
                              , DOMError::ErrorSeverity errorType
                              , const XMLCh*   const    errorMsg)
{
    bool toContinueProcess = true;   // default value for no error handler

    if (fErrorHandler)
    {
        DOMLocatorImpl  locator(0, 0, (DOMNode* const) errorNode, 0, 0);
        DOMErrorImpl    domError(errorType , errorMsg, &locator);
        toContinueProcess = fErrorHandler->handleError(domError);
    }

    if (errorType != DOMError::DOM_SEVERITY_WARNING)
        fErrorCount++;

    return toContinueProcess;
}

bool DOMWriterImpl::reportError(const DOMNode* const    errorNode
                              , DOMError::ErrorSeverity errorType
                              , XMLDOMMsg::Codes        toEmit)
{
    const unsigned int msgSize = 1023;
    XMLCh errText[msgSize + 1];

    DOMImplementationImpl::getMsgLoader4DOM()->loadMsg(toEmit, errText, msgSize);

    bool toContinueProcess = true;   // default value for no error handler

    if (fErrorHandler)
    {
        DOMLocatorImpl  locator(0, 0, (DOMNode* const) errorNode, 0, 0);
        DOMErrorImpl    domError(errorType , errText, &locator);
        toContinueProcess = fErrorHandler->handleError(domError);
    }

    if (errorType != DOMError::DOM_SEVERITY_WARNING)
        fErrorCount++;

    if (errorType == DOMError::DOM_SEVERITY_FATAL_ERROR || !toContinueProcess)
        throw toEmit;

    return toContinueProcess;
}

//
//
//
void DOMWriterImpl::procCdataSection(const XMLCh*   const nodeValue
                                   , const DOMNode* const nodeToWrite
                                   , int level)
{
    /***
     * Append a ']]>' at the end
     */
    int len = XMLString::stringLen(nodeValue);
    XMLCh* repNodeValue = (XMLCh*) fMemoryManager->allocate
    (
        (len + offset + 1) * sizeof(XMLCh)
    );//new XMLCh [len + offset + 1];
    XMLString::copyString(repNodeValue, nodeValue);
    XMLString::catString(repNodeValue, gEndCDATA);
    ArrayJanitor<XMLCh>  jName(repNodeValue, fMemoryManager);

    XMLCh* curPtr  = (XMLCh*) repNodeValue;
    XMLCh* nextPtr = 0;
    int    endTagPos = -1;

    bool   endTagFound = true;

    while (endTagFound)
    {
        endTagPos = XMLString::patternMatch(curPtr, gEndCDATA);
        if (endTagPos != -1)
        {
            nextPtr = curPtr + endTagPos + offset;  // skip the ']]>'
            *(curPtr + endTagPos) = chNull;         //nullify the first ']'
            if (endTagPos != len)
                reportError(nodeToWrite, DOMError::DOM_SEVERITY_WARNING, XMLDOMMsg::Writer_NestedCDATA);
            len = len - endTagPos - offset;
        }
        else
        {
            endTagFound = false;
        }

        /***
            to check ]]>]]>
        ***/
        if (endTagPos == 0)
        {
            printNewLine();
            printIndent(level);
            TRY_CATCH_THROW
            (
                *fFormatter << XMLFormatter::NoEscapes << gStartCDATA << gEndCDATA;
                , true
            )
        }
        else
        {
            procUnrepCharInCdataSection(curPtr, nodeToWrite, level);
        }

        if (endTagFound)
        {
            *(nextPtr - offset) = chCloseSquare;   //restore the first ']'
            curPtr = nextPtr;
        }
    }

    return;
}

//
//
//
void DOMWriterImpl::procUnrepCharInCdataSection(const XMLCh*   const nodeValue
                                              , const DOMNode* const nodeToWrite
                                              , int level)
{
    //
    //  We have to check each character and see if it could be represented.
    //  As long as it can, we just keep up with where we started and how
    //  many chars we've checked. When we hit an unrepresentable one, we
    //  stop, transcode everything we've collected, then start handling
    //  the unrepresentables via char refs. We repeat this until we get all
    //  the chars done.
    //
    const XMLCh*    srcPtr = nodeValue;
    const XMLCh*    endPtr = nodeValue +  XMLString::stringLen(nodeValue);

    // Set up the common part of the buffer that we build char refs into
    XMLCh tmpBuf[32];
    tmpBuf[0] = chAmpersand;
    tmpBuf[1] = chPound;
    tmpBuf[2] = chLatin_x;

    while (srcPtr < endPtr)
    {
        const XMLCh* tmpPtr = srcPtr;
        while (tmpPtr < endPtr)
        {
            if (fFormatter->getTranscoder()->canTranscodeTo(*tmpPtr))
                tmpPtr++;
            else
                break;
        }

        if (tmpPtr > srcPtr)
        {
            printNewLine();
            printIndent(level);
            TRY_CATCH_THROW
           (
                *fFormatter << XMLFormatter::NoEscapes << gStartCDATA;
                , true
            )

            // We got at least some chars that can be done normally
            fFormatter->formatBuf
            (
                srcPtr
                , tmpPtr - srcPtr
                , XMLFormatter::NoEscapes
                , XMLFormatter::UnRep_Fail
            );

            TRY_CATCH_THROW
            (
                *fFormatter << XMLFormatter::NoEscapes << gEndCDATA;
                , true
            )

            // Update the source pointer to our new spot
            srcPtr = tmpPtr;
        }
        else
        {
            //
            //  We hit something unrepresentable. So continue forward doing
            //  char refs until we hit something representable again or the
            //  end of input.
            //

            // one warning for consective unrep chars
            reportError(nodeToWrite, DOMError::DOM_SEVERITY_WARNING, XMLDOMMsg::Writer_NotRepresentChar);

            while (srcPtr < endPtr)
            {
                // Build a char ref for the current char
                XMLString::binToText(*srcPtr, &tmpBuf[3], 8, 16, fMemoryManager);
                const unsigned int bufLen = XMLString::stringLen(tmpBuf);
                tmpBuf[bufLen] = chSemiColon;
                tmpBuf[bufLen+1] = chNull;

                // And now call recursively back to our caller to format this
                fFormatter->formatBuf
                (
                    tmpBuf
                    , bufLen + 1
                    , XMLFormatter::NoEscapes
                    , XMLFormatter::UnRep_Fail
                );

                // Move up the source pointer and break out if needed
                srcPtr++;
                if (fFormatter->getTranscoder()->canTranscodeTo(*srcPtr))
                    break;
            }
        }
    }
}

void DOMWriterImpl::processNode(const DOMNode* const nodeToWrite)
{
    processNode(nodeToWrite, 0);
}

bool DOMWriterImpl::canSetFeature(const int featureId
                                       , bool      val) const
{
    return featuresSupported[2*featureId + (val? 0: 1)];
}

void DOMWriterImpl::printNewLine()
{
    if (getFeature(FORMAT_PRETTY_PRINT_ID))
    {
        fCurrentLine++;
        *fFormatter << fNewLineUsed;
    }
}

void DOMWriterImpl::printIndent(int level) const
{
    if (getFeature(FORMAT_PRETTY_PRINT_ID))
    {
        if (lastWhiteSpaceInTextNode)
        {
            level -= lastWhiteSpaceInTextNode/2; // two chSpaces equals one indent level
            lastWhiteSpaceInTextNode = 0;
            // if lastWhiteSpaceInTextNode/2 is greater than level, then
            // it means too many spaces have been written to the
            // output stream and we can no longer indent properly
        }

        for(int i = 0; i < level; i++)
            *fFormatter << chSpace << chSpace;
    }
}

void DOMWriterImpl::release()
{
    DOMWriterImpl* writer = (DOMWriterImpl*) this;
    delete writer;
}

void DOMWriterImpl::processBOM()
{
    // if the feature is not set, don't output bom
    if (!getFeature(BYTE_ORDER_MARK_ID))
        return;

    if ((XMLString::compareIString(fEncoding, XMLUni::fgUTF16LEncodingString)  == 0) ||
        (XMLString::compareIString(fEncoding, XMLUni::fgUTF16LEncodingString2) == 0)  )
    {
        fFormatter->writeBOM(BOM_utf16le, 2);
    }
    else if ((XMLString::compareIString(fEncoding, XMLUni::fgUTF16BEncodingString)  == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUTF16BEncodingString2) == 0)  )
    {
        fFormatter->writeBOM(BOM_utf16be, 2);
    }
    else if ((XMLString::compareIString(fEncoding, XMLUni::fgUTF16EncodingString)  == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUTF16EncodingString2) == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUTF16EncodingString3) == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUTF16EncodingString4) == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUTF16EncodingString5) == 0)  ) 
    {
#if defined(ENDIANMODE_LITTLE)
            fFormatter->writeBOM(BOM_utf16le, 2);
#elif defined(ENDIANMODE_BIG)
            fFormatter->writeBOM(BOM_utf16be, 2);
#endif
    }
    else if ((XMLString::compareIString(fEncoding, XMLUni::fgUCS4LEncodingString)  == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUCS4LEncodingString2) == 0)  )
    {
        fFormatter->writeBOM(BOM_ucs4le, 4);
    }
    else if ((XMLString::compareIString(fEncoding, XMLUni::fgUCS4BEncodingString)  == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUCS4BEncodingString2) == 0)  )
    {
        fFormatter->writeBOM(BOM_ucs4be, 4);
    }
    else if ((XMLString::compareIString(fEncoding, XMLUni::fgUCS4EncodingString)  == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUCS4EncodingString2) == 0) ||
             (XMLString::compareIString(fEncoding, XMLUni::fgUCS4EncodingString3) == 0)  )
    {
#if defined(ENDIANMODE_LITTLE)
        fFormatter->writeBOM(BOM_ucs4le, 4);
#elif defined(ENDIANMODE_BIG)
        fFormatter->writeBOM(BOM_ucs4be, 4);
#endif
    }

    return;

}

XERCES_CPP_NAMESPACE_END