/*
 * 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.
 */


#if defined(XALAN_BUILD_DEPRECATED_DOM_BRIDGE)


// Class header file.
#include "FormatterToDeprecatedXercesDOM.hpp"


#include <cassert>


#include <xercesc/sax/AttributeList.hpp>


#if XERCES_VERSION_MAJOR >= 2
#include <xercesc/dom/deprecated/DOM_CDATASection.hpp>
#include <xercesc/dom/deprecated/DOM_Comment.hpp>
#include <xercesc/dom/deprecated/DOM_EntityReference.hpp>
#include <xercesc/dom/deprecated/DOM_ProcessingInstruction.hpp>
#include <xercesc/dom/deprecated/DOM_Text.hpp>
#else
#include <xercesc/dom/DOM_CDATASection.hpp>
#include <xercesc/dom/DOM_Comment.hpp>
#include <xercesc/dom/DOM_EntityReference.hpp>
#include <xercesc/dom/DOM_ProcessingInstruction.hpp>
#include <xercesc/dom/DOM_Text.hpp>
#endif


#include <xalanc/XalanDOM/XalanDOMString.hpp>


#include <xalanc/PlatformSupport/DOMStringHelper.hpp>
#include <xalanc/PlatformSupport/PrefixResolver.hpp>


#include <xalanc/DOMSupport/DOMServices.hpp>


#include <xalanc/XercesParserLiaison/XercesDOMException.hpp>


namespace XALAN_CPP_NAMESPACE {


const XalanDOMString    FormatterToDeprecatedXercesDOM::s_emptyString;


FormatterToDeprecatedXercesDOM::FormatterToDeprecatedXercesDOM(
            DOM_Document_Type&          doc,
            DOM_DocumentFragmentType&   docFrag,
            DOM_ElementType&            currentElement) :
    FormatterListener(OUTPUT_METHOD_DOM),
    m_doc(doc),
    m_docFrag(docFrag),
    m_currentElem(currentElement),
    m_elemStack(),
    m_buffer(),
    m_textBuffer()
{
    assert(m_doc != 0 && m_docFrag != 0);
}


FormatterToDeprecatedXercesDOM::FormatterToDeprecatedXercesDOM(
            DOM_Document_Type&      doc,
            DOM_ElementType&        elem) :
    FormatterListener(OUTPUT_METHOD_DOM),
    m_doc(doc),
    m_docFrag(),
    m_currentElem(elem),
    m_elemStack(),
    m_buffer(),
    m_textBuffer()
{
    assert(m_doc != 0);
}

FormatterToDeprecatedXercesDOM::FormatterToDeprecatedXercesDOM(
            DOM_Document_Type&      doc) :
    FormatterListener(OUTPUT_METHOD_DOM),
    m_doc(doc),
    m_docFrag(),
    m_currentElem(),
    m_elemStack(),
    m_buffer(),
    m_textBuffer()
{
    assert(m_doc != 0);
}


FormatterToDeprecatedXercesDOM::~FormatterToDeprecatedXercesDOM()
{
}


void
FormatterToDeprecatedXercesDOM::setDocumentLocator(const Locator* const /* locator */)
{
    // No action for the moment.
}


void
FormatterToDeprecatedXercesDOM::startDocument()
{
    // No action for the moment.
}


void
FormatterToDeprecatedXercesDOM::endDocument()
{
    // No action for the moment.
}


void
FormatterToDeprecatedXercesDOM::startElement(
            const   XMLCh* const    name,
            AttributeListType&      attrs)
{
    try
    {
        processAccumulatedText();

        DOM_ElementType elem = createElement(name, attrs);

        append(elem);

        m_elemStack.push_back(m_currentElem);

        m_currentElem = elem;
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::endElement(const    XMLCh* const    /* name */)
{
    try
    {
        processAccumulatedText();

        if(m_elemStack.empty() == false)
        {
            m_currentElem = m_elemStack.back();

            m_elemStack.pop_back();
        }
        else
        {
            m_currentElem = 0;
        }
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::characters(
            const XMLCh* const  chars,
            const unsigned int  length)
{
    m_textBuffer.append(chars, length);
}


void
FormatterToDeprecatedXercesDOM::charactersRaw(
        const XMLCh* const  chars,
        const unsigned int  length)
{
    try
    {
        processAccumulatedText();

        cdata(chars, length);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}       


void
FormatterToDeprecatedXercesDOM::entityReference(const XMLCh* const  name)
{
    try
    {
        processAccumulatedText();

        DOM_EntityReferenceType  theXercesNode =
            m_doc.createEntityReference(name);

        assert(theXercesNode.isNull() == false);

        append(theXercesNode);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::ignorableWhitespace(
            const XMLCh* const  chars,
            const unsigned int  length)
{
    try
    {
        processAccumulatedText();

        assign(m_buffer, chars, length);

        DOM_TextType theXercesNode = 
            m_doc.createTextNode(m_buffer.c_str());

        assert(theXercesNode.isNull() == false);

        append(theXercesNode);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::processingInstruction(
            const XMLCh* const  target,
            const XMLCh* const  data)
{
    try
    {
        processAccumulatedText();

        DOM_ProcessingInstructionType theXercesNode = 
            m_doc.createProcessingInstruction(target, data);

        assert(theXercesNode.isNull() == false);

        append(theXercesNode);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::resetDocument()
{
}


void
FormatterToDeprecatedXercesDOM::comment(const XMLCh* const  data)
{
    try
    {
        processAccumulatedText();

        DOM_CommentType theXercesNode =
            m_doc.createComment(data);

        assert(theXercesNode.isNull() == false);

        append(theXercesNode);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::cdata(
            const XMLCh* const  ch,
            const unsigned int  length)
{
    try
    {
        processAccumulatedText();

        assign(m_buffer, ch, length);

        DOM_CDATASectionType theXercesNode = 
            m_doc.createCDATASection(m_buffer.c_str());

        assert(theXercesNode.isNull() == false);

        append(theXercesNode);
    }
    catch(const xercesc::DOMException&    theException)
    {
        throw XercesDOMException(theException);
    }
}


void
FormatterToDeprecatedXercesDOM::append(DOM_NodeType &newNode)
{
    assert(newNode != 0);

    if(m_currentElem.isNull() == false)
    {
        m_currentElem.appendChild(newNode);
    }
    else if(m_docFrag.isNull() == false)
    {
        m_docFrag.appendChild(newNode);
    }
    else
    {
        m_doc.appendChild(newNode);
    }
}


DOM_ElementType
FormatterToDeprecatedXercesDOM::createElement(
            const XalanDOMChar*     theElementName,
            AttributeListType&      attrs)
{
    DOM_ElementType theElement;

    if (m_prefixResolver == 0)
    {
        theElement = m_doc.createElement(theElementName);

        addAttributes(theElement, attrs);
    }
    else
    {
        // Check for the namespace...
        const XalanDOMString* const     theNamespace =
                DOMServices::getNamespaceForPrefix(theElementName, *m_prefixResolver, false , m_buffer);

        if (theNamespace == 0 || length(*theNamespace) == 0)
        {
            theElement = m_doc.createElement(theElementName);
        }
        else
        {
            theElement = m_doc.createElementNS(theNamespace->c_str(), theElementName);
        }

        addAttributes(theElement, attrs);
    }

    return theElement;
}


void
FormatterToDeprecatedXercesDOM::addAttributes(
            DOM_ElementType&    theElement,
            AttributeListType&  attrs)
{
    const unsigned int  nAtts = attrs.getLength();

    if (m_prefixResolver == 0)
    {
        for(unsigned int i = 0; i < nAtts; i++)
        {
            theElement.setAttribute(attrs.getName(i), attrs.getValue(i));
        }
    }
    else
    {
        for(unsigned int i = 0; i < nAtts; i++)
        {
            const XalanDOMChar* const   theName = attrs.getName(i);
            assert(theName != 0);

            // Check for the namespace...
            const XalanDOMString* const     theNamespace =
                    DOMServices::getNamespaceForPrefix(theName, *m_prefixResolver, true, m_buffer);

            if (theNamespace == 0 || length(*theNamespace) == 0)
            {
                theElement.setAttribute(theName, attrs.getValue(i));
            }
            else
            {
                theElement.setAttributeNS(theNamespace->c_str(), theName, attrs.getValue(i));
            }
        }
    }
}


void
FormatterToDeprecatedXercesDOM::processAccumulatedText()
{
    if (m_textBuffer.empty() == false)
    {
        DOM_TextType theXercesNode =
            m_doc.createTextNode(m_textBuffer.c_str());
        
        assert(theXercesNode.isNull() == false);

        append(theXercesNode);

        clear(m_textBuffer);
    }
}


}


#endif //XALAN_BUILD_DEPRECATED_DOM_BRIDGE