/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   CXdmXmlContentHandler

*

*/

#include <XdmDocument.h>

#include <contenthandler.h>

#include <XdmDocumentNode.h>

#include <XdmNodeAttribute.h>

#include "XdmNamespaceContainer.h"

#include "XdmXmlParser.h"

#include "XdmNodeInterface.h"

#include "XmlParserNodePath.h"

#include "XdmXmlContentHandler.h"

// ---------------------------------------------------------

// CXdmXmlContentHandler::CXdmXmlContentHandler

//

// ---------------------------------------------------------

//

CXdmXmlContentHandler::CXdmXmlContentHandler( CXdmXmlParser& aParserMain ) :

                                              iFinished( EFalse ),

                                              iTargetFound( EFalse ),

                                              iPartialDocument( EFalse ),

                                              iParserMain( aParserMain )

    {   

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::NewL

//

// ---------------------------------------------------------

//

CXdmXmlContentHandler* CXdmXmlContentHandler::NewL( CXdmXmlParser& aParserMain )

    {

    CXdmXmlContentHandler* self = new ( ELeave ) CXdmXmlContentHandler( aParserMain );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::ConstructL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::ConstructL()

    {

    iContentBuffer = CBufFlat::NewL( 50 ); 

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::~CXdmXmlContentHandler

//

// ---------------------------------------------------------

//

CXdmXmlContentHandler::~CXdmXmlContentHandler()

    { 

    delete iNodePath;

    delete iContentBuffer;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::SetTarget

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::SetTarget( const CXdmDocument& aTargetDocument )

    {

    iTargetDocument = CONST_CAST( CXdmDocument*, &aTargetDocument );

    iRootNode = iTargetDocument->DocumentRoot();

    iDocumentSubset = NULL;

    iIsRootNode = ETrue;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::SetTarget

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::SetTarget( const CXdmDocumentNode& aDocumentRoot )

    {

    iTargetDocument = NULL;

    iRootNode = CONST_CAST( CXdmDocumentNode*, &aDocumentRoot );

    iDocumentSubset = NULL;

    iIsRootNode = ETrue;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::SetTarget 

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::SetTargetL( const CXdmDocument& aTargetDocument,

                                        const CXdmDocumentNode& aTargetNode )

    {

    iElementType = aTargetNode.ElementType();

    iTargetDocument = CONST_CAST( CXdmDocument*, &aTargetDocument );

    if( iElementType == EXdmElementAttribute )

        {

        iTargetAttribute = ( CXdmNodeAttribute* )&aTargetNode;

        iDocumentSubset = CONST_CAST( CXdmDocumentNode*, aTargetNode.Parent() );

        }

    else 

        {

        iTargetAttribute = NULL;

        iDocumentSubset = CONST_CAST( CXdmDocumentNode*, &aTargetNode );

        }

    iNodePath = CXmlParserNodePath::NewL( iParserMain, iElementType, *iDocumentSubset, this );

    iRootNode = iDocumentSubset; 

    iPartialDocument = ETrue;

    iCurrentNode = NULL;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::TargetAttribute

//

// ---------------------------------------------------------

//

CXdmNodeAttribute* CXdmXmlContentHandler::TargetAttribute() const

    {

    return iTargetAttribute;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::Reset

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::Reset()

    {

    iTargetDocument = NULL;

    iTargetAttribute = NULL;

    iDocumentSubset = NULL;

    iRootNode = NULL;

    iCurrentNode = NULL;

    delete iNodePath;

    iNodePath = NULL;

    iFinished = EFalse;

    iTargetFound = EFalse;

    iPartialDocument = EFalse;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::GetExtendedInterface

//

// ---------------------------------------------------------

//

TAny* CXdmXmlContentHandler::GetExtendedInterface( const TInt32 /*aUid*/ )    

    {

    return NULL; 

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnContentL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnContentL( const TDesC8 &aBytes,

                                        TInt aErrorCode )

    {

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnContentL()" ), aErrorCode );

        iParserMain.WriteToLog( _L8( "  Bytes: %S" ), &aBytes );

        iParserMain.WriteToLog( _L8( "  Error: %d" ), aErrorCode );

    #endif

    if( iPartialDocument && !iTargetFound )

        return;

    TInt length = aBytes.Length();

    TPtr8 desc( CONST_CAST( TUint8*, aBytes.Ptr() ), length, length );

    desc.TrimAll();

    if( desc.Length() > 0 )

        {

        iContentBuffer->InsertL( iContentIndex, desc );

        iContentIndex = iContentIndex + desc.Length();

        }

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnEndDocumentL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnEndDocumentL( TInt aErrorCode )

    {

    iIsRootNode = ETrue;

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnEndDocumentL() - Error: %d "), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnEndElementL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnEndElementL( const RTagInfo &aElement,

                                           TInt aErrorCode )

    {

    TPtrC8 element( aElement.LocalName().DesC() );

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnEndElementL() - Element: %S  Error: %d "),

                                   &element, aErrorCode );

    #endif

    if( iCurrentNode != NULL && iContentBuffer->Size() > 0 )

        {

        TPtrC8 data( iContentBuffer->Ptr( 0 ) );

        iCurrentNode->SetLeafNode( ETrue );

        iCurrentNode->SetLeafNodeContentL( data );

        iContentBuffer->Reset();

        iContentIndex = 0;

        }

    if( iCurrentNode != NULL && iCurrentNode->NodeCount() == 0 )

        iCurrentNode->SetEmptyNode( ETrue );

    if( iPartialDocument )

        {

        if( !iFinished )

            {

            if( iCurrentNode != NULL )

                {

                CXdmDocumentNode* parent = iCurrentNode->Parent();

                #ifdef _DEBUG

                    TBuf8<64> parentName;

                    TBuf8<64> currentName;

                    parentName.Copy( parent->NodeName() );

                    currentName.Copy( iCurrentNode->NodeName() );

                    iParserMain.WriteToLog( _L8( " Parent: %x - %S "), parent, &parentName );

                    iParserMain.WriteToLog( _L8( " Current: %x - %S"), iCurrentNode, &currentName );

                #endif  

                if( parent != NULL && iCurrentNode != parent )

                    iCurrentNode = iCurrentNode->Parent();

                iFinished = iCurrentNode == iDocumentSubset->Parent();

                if( iFinished )

                    iCurrentNode = NULL;

                #ifdef _DEBUG

                    iParserMain.WriteToLog( _L8( " Current: %x"), iCurrentNode );

                #endif   

                }   

            }

        }

    else if ( iCurrentNode ) 

        {

        iCurrentNode = iCurrentNode->Parent();

        }

    else

        {

        // For PC-lint note

        }

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnEndPrefixMappingL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnEndPrefixMappingL( const RString& /*aPrefix*/,

                                                 TInt aErrorCode )

    {

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnEndPrefixMappingL() - Error: %d "), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnError

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnError( TInt aErrorCode )

    {

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnError() - Error: %d" ), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnIgnorableWhiteSpaceL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnIgnorableWhiteSpaceL( const TDesC8& /*aBytes*/,

                                                    TInt /*aErrorCode*/ )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXmlNode::OnIgnorableWhiteSpaceL() - Error: %d" ), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnProcessingInstructionL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnProcessingInstructionL( const TDesC8& /*aTarget*/,

                                                      const TDesC8& /*aData*/,

                                                      TInt /*aErrorCode*/ )

    {

    #ifdef _DEBUG

       // iParserMain.WriteToLog( _L8( "CXmlNode::OnProcessingInstructionL() - Error: %d" ), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnSkippedEntityL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnSkippedEntityL( const RString& /*aName*/,

                                              TInt /*aErrorCode*/ )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXmlNode::OnSkippedEntityL() - Error: %d" ), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnStartDocumentL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnStartDocumentL( const RDocumentParameters& /*aDocParam*/, TInt aErrorCode )

    {

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnStartDocumentL() - Error: %d "), aErrorCode );

    #endif

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnStartElementL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnStartElementL( const RTagInfo& aElement,

                                             const RAttributeArray& aAttributes,

                                             TInt aErrorCode )

    {

    TPtrC8 name( aElement.LocalName().DesC() );

    TPtrC8 uri( aElement.Uri().DesC() );

    TPtrC8 prefix( aElement.Prefix().DesC() );

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXmlNode::OnStartElementL(): Error: %d" ), aErrorCode );

        iParserMain.WriteToLog( _L8( "  URI:     %S" ), &uri );

        iParserMain.WriteToLog( _L8( "  Name:    %S" ), &name );

        iParserMain.WriteToLog( _L8( "  Prefix:  %S" ), &prefix );

    #endif

    if( iPartialDocument )

        {   

        if( !iFinished )

            {

            if( iTargetFound )

                {

                iCurrentNode = iCurrentNode->CreateChileNodeL();

                HandleNextElementL( aElement, aAttributes );

                }

            else

                {

                if( iNodePath->CheckNextNodeL( name, aAttributes ) )

                    {

                    if( iElementType == EXdmElementAttribute )

                        AppendAttributeValueL( aAttributes );

                    else

                        {

                        iTargetFound = ETrue;

                        iCurrentNode = iDocumentSubset;

                        }

                    }

                }

            }

        }

    else

        {

        iCurrentNode = iIsRootNode ? iRootNode : iCurrentNode->CreateChileNodeL();

        HandleNextElementL( aElement, aAttributes );

        iIsRootNode = EFalse;

        }    

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::HandleNextElementL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::HandleNextElementL( const RTagInfo& aElement,

                                                const RAttributeArray& aAttributes )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::HandleNextElementL()") );

    #endif

    iCurrentNode->SetNameL( aElement.LocalName().DesC() );

    SetNamespaceInformationL( aElement, iCurrentNode );

    TInt count = aAttributes.Count();

    if( count > 0 )

        {

        CXdmNodeAttribute* attribute = NULL;

        for( TInt i = 0;i < count;i++ )

            {

            attribute = iCurrentNode->CreateAttributeL();

            CleanupStack::PushL( attribute );

            attribute->SetNameL( aAttributes[i].Attribute().LocalName().DesC() );

            attribute->SetAttributeValueL( aAttributes[i].Value().DesC() );

            CleanupStack::Pop();  //attribute

            }

        }

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::CompileAttributesL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::AppendAttributeValueL( const RAttributeArray& aAttributes )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::AppendAttributeValueL()") );

    #endif

    TInt count = aAttributes.Count();

    TPtrC8 targetName( iTargetAttribute->EightBitNodeNameLC()->Des() );

    for( TInt i = 0;!iFinished && i < count;i++ )

        {

        TPtrC8 desc = aAttributes[i].Attribute().LocalName().DesC();

        #ifdef _DEBUG

            iParserMain.WriteToLog( _L8( "  Name of attribute %d: %S"), i, &desc );

        #endif

        if( targetName.Compare( desc ) == 0 )

            {

            iFinished = ETrue;

            TPtrC8 value( aAttributes[i].Value().DesC() );

            iTargetAttribute->SetAttributeValueL( value );

            }

        }

    CleanupStack::PopAndDestroy();  //desc

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::OnStartPrefixMappingL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::OnStartPrefixMappingL( const RString& aPrefix,

                                                   const RString& aUri,

                                                   TInt aErrorCode )

    {

    #ifdef _DEBUG

        iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::OnStartPrefixMappingL() - Error: %d" ), aErrorCode );

    #endif

    AppendNameSpaceL( aPrefix.DesC(), aUri.DesC() );

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::IsWhiteSpace

//

// ---------------------------------------------------------

//

TBool CXdmXmlContentHandler::IsWhiteSpace( const TDesC8 &aBytes ) const

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::IsWhiteSpace()") );

    #endif

    TBool ret = ETrue;

    if( aBytes.Length() > 0 )

        {

        TChar ch = aBytes[0];

        ret = ch == 32 || ch == 10 || ch == 13 || ch == 9;

        }

    return ret;

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::AppendNameSpaceL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::AppendNameSpaceL( const TDesC8& aPrefix, const TDesC8& aUri )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::SetNameSpaceInformationL()") );

    #endif

    if( iTargetDocument != NULL )

        {

        MXdmNamespaceContainer* container = iTargetDocument;

        container->AppendNamespaceL( aUri, aPrefix );

        }

    }

// ---------------------------------------------------------

// CXdmXmlContentHandler::SetNameSpaceInformationL

//

// ---------------------------------------------------------

//

void CXdmXmlContentHandler::SetNamespaceInformationL( const RTagInfo& aElement,

                                                      MXdmNodeInterface* aXcapNode )

    {

    #ifdef _DEBUG

        //iParserMain.WriteToLog( _L8( "CXdmXmlContentHandler::SetNameSpaceInformationL()") );

    #endif

    TPtrC8 prefix( aElement.Prefix().DesC() );

    if( prefix.Length() > 0 )

        {

        aXcapNode->SetPrefixL( prefix );

        }

    }

// End of File