// 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:

// XPath utils

//

#include <xml/dom/xmlengxpathutils.h>

#include <stdapis/libxml2/libxml2_globals.h>

#include <stdapis/libxml2/libxml2_xpath.h>

#include <stdapis/libxml2/libxml2_xpathinternals.h>

#include "xmlengdomdefs.h"

#include <xml/dom/xmlengnode.h>

#include <xml/utils/xmlengmem.h>

#include <xml/utils/xmlengxestrings.h>

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

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

// Converts node to number

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

//

EXPORT_C TReal XmlEngXPathUtils::ToNumberL(

    const TXmlEngNode& aNode )

    {

    // construct a fake node set with one node

    TXmlEngNode node = aNode;

    xmlNodeSet nset;

    xmlNodePtr pNode = INTERNAL_NODEPTR(node);

    nset.nodeNr = 1;

    nset.nodeMax = 1;

    nset.nodeTab = &pNode;

    //

    TReal number = xmlXPathCastNodeSetToNumber(&nset);

    TEST_OOM_FLAG;

    return number;

    }

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

// Converts node-set to number

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

//

EXPORT_C TReal XmlEngXPathUtils::ToNumberL(

    const RXmlEngNodeSet& aNodeSet )

    {

    TReal number = xmlXPathCastNodeSetToNumber(INTERNAL_NODESETPTR(aNodeSet));

    TEST_OOM_FLAG;    

    return number;

    }

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

// Converts TBool value to number

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

//

EXPORT_C TReal XmlEngXPathUtils::ToNumberL(

    TBool aValue )

    {

    return aValue ? (1.0) :(0.0);

    }

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

// Converts string to number

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

//

EXPORT_C TReal XmlEngXPathUtils::ToNumberL(

    const TDesC8& aString )

    {

    xmlChar* str = xmlCharFromDesC8L(aString);

    TReal number = (TReal)xmlXPathStringEvalNumber(str);

    delete str;

    TEST_OOM_FLAG;    

    return number;

    }

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

// Converts node to string

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

//

EXPORT_C void XmlEngXPathUtils::ToStringL(

    const TXmlEngNode& aNode, RBuf8& aOutput)

    {

    aNode.WholeTextContentsCopyL(aOutput);

    }

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

// Converts node-set to string

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

//

EXPORT_C void XmlEngXPathUtils::ToStringL(

    const RXmlEngNodeSet& aNodeSet, RBuf8& aOutput)

    {

    xmlChar* text= xmlXPathCastNodeSetToString(INTERNAL_NODESETPTR(aNodeSet));

    OOM_IF_NULL(text);    

    xmlCharAssignToRbuf8L(aOutput,text);

    }

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

// Converts TBool value to string

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

//

EXPORT_C void XmlEngXPathUtils::ToStringL(

    TBool aValue, RBuf8& aOutput)

    {

    xmlChar* text = xmlStrdup((const xmlChar *)(aValue ? "true" : "false"));

    OOM_IF_NULL(text);    

    xmlCharAssignToRbuf8L(aOutput,text);

    }

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

// Converts TReal value to string

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

//

EXPORT_C void XmlEngXPathUtils::ToStringL(

    TReal aValue, RBuf8& aOutput )

    {

    xmlChar* text = xmlXPathCastNumberToString(aValue);

    OOM_IF_NULL(text);    

    xmlCharAssignToRbuf8L(aOutput,text);

    }

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

// Converts node to boolean

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

//

EXPORT_C TBool XmlEngXPathUtils::ToBoolean(

    const TXmlEngNode& aNode )

    {

    return aNode.NotNull();

    }

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

// Converts node-set to boolean

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

//

EXPORT_C TBool XmlEngXPathUtils::ToBoolean(

    const RXmlEngNodeSet& aNodeSet )

    {

    return xmlXPathCastNodeSetToBoolean(INTERNAL_NODESETPTR(aNodeSet));

    }

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

// Converts string to boolean

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

//

EXPORT_C TBool XmlEngXPathUtils::ToBoolean(

    const TDesC8& aValue )

    {

    return aValue.Length() ? 1 : 0;

    }

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

// Converts stringArg to boolean

// @deprecated

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

//

EXPORT_C TBool XmlEngXPathUtils::ToBooleanL(

    const TDesC8& aValue )

    {

    return ToBoolean(aValue);

    }

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

// Converts TReal value to boolean

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

//

EXPORT_C TBool XmlEngXPathUtils::ToBoolean(

    TReal aValue )

    {

    return xmlXPathIsNaN(aValue) || (aValue == 0.0) ?  0 : 1;

    }