// Copyright (c) 2006-2009 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:

// Result of XPath expression

//

#include <xml/dom/xmlengxpathresult.h>

#include <stdapis/libxml2/libxml2_globals.h>

#include <stdapis/libxml2/libxml2_xpath.h>

#include "xmlengdomdefs.h"

#include <xml/utils/xmlengmem.h>

#include <xml/utils/xmlengxestrings.h>

#define RESULT_OBJ (static_cast<xmlXPathObjectPtr>(iInternal))

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

// Default constructor

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

//

EXPORT_C RXmlEngXPathResult::RXmlEngXPathResult():iInternal(NULL)

	{

	}

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

// Frees any allocated memory by this instance

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

//

EXPORT_C void RXmlEngXPathResult::Free()

    {

	xmlXPathFreeObject(RESULT_OBJ);

    }

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

// Retrieves type of result

// @note Always check  type of result before use it

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

//

EXPORT_C RXmlEngXPathResult::TXmlEngXPathResultType RXmlEngXPathResult::Type() const

    {

	return (TXmlEngXPathResultType)RESULT_OBJ->type;

    }

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

// Retrieves node-set result.

// Non-RXmlEngNodeSet result will return NULL. No conversion is done from other 

// types.

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

//

EXPORT_C RXmlEngNodeSet RXmlEngXPathResult::AsNodeSet() const

    {

	return RXmlEngNodeSet(RESULT_OBJ->nodesetval);	

    }

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

// Retrieves copy of result as TXmlEngParserString. 

// In this version of API this method will make conversion from other types of 

// XPath result. In the future release there will be separate method for 

// conversion (this method will return TDOMString and conversion method - 

// TString)

// NOTE: Returns a pointer to the copy of the string, the caller must free it

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

//

EXPORT_C void RXmlEngXPathResult::AsStringL(RBuf8& aOutput) const

    {

    xmlChar* copy = NULL;

    if (RESULT_OBJ->type == XPATH_STRING)

        {

        if(RESULT_OBJ->stringval)

            {

            copy = xmlStrdup(RESULT_OBJ->stringval);

            OOM_IF_NULL(copy);

        	}

        }

    else

        {

        copy = xmlXPathCastToString(RESULT_OBJ);

        if(OOM_FLAG)

            {

            if(copy)

                xmlFree(copy);

            OOM_HAPPENED;

            }

        }

    xmlCharAssignToRbuf8L(aOutput,copy);

    }

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

// Retrieves numeric value of the result.

// Conversion occurs as XPath spec says if the result is not of ENumber type

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

//

EXPORT_C TReal RXmlEngXPathResult::AsNumber() const

    {

	if (RESULT_OBJ->type == XPATH_NUMBER)

		return RESULT_OBJ->floatval;

	else

		return xmlXPathCastToNumber(RESULT_OBJ);

    }

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

// Retrieves numeric value of the result.

// Conversion occurs as XPath spec says if the result is not of EBoolean type

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

//

EXPORT_C TBool RXmlEngXPathResult::AsBoolean() const

	{

	if (RESULT_OBJ->type == XPATH_BOOLEAN)

		return RESULT_OBJ->boolval;

	else

		return xmlXPathCastToBoolean(RESULT_OBJ);

	}

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

// Constructor 

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

//

RXmlEngXPathResult::RXmlEngXPathResult(void* aData):iInternal(aData)

	{

	}