applayerprotocols/wappushsupport/XmlElement/XMLELEMT.CPP
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:09:52 +0200
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// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// XmlElement.cpp
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// XML Element class
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// Derived from CTypedNode. Adds functionality
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// to make the use of the node simpler
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// 
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//
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#include <f32file.h>
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#include <attrlut.h> 
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#include <xmlelemt.h>
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LOCAL_C TBool Compare(TInt aLength,const TText* aStringA,const TDesC& aStringB)
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	{
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	if(aLength==aStringB.Length())
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		{
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		const TText* stringB=aStringB.Ptr();
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		while( STATIC_CAST(TUint, aLength) >= (sizeof(TInt32) / sizeof(TText)) )
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			{
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			if(*(TInt32*)stringB!=*(TInt32*)aStringA)
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				return EFalse;
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			stringB+=(sizeof(TInt32)/sizeof(TText));
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			aStringA+=(sizeof(TInt32)/sizeof(TText));
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			aLength-=(sizeof(TInt32)/sizeof(TText));
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			}
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		while(aLength>0)
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			{
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			if(*stringB++!=*aStringA++)
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				return EFalse;
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			aLength--;
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			}
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		return ETrue;
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		}
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	return EFalse;
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	}
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//-------------------------------------------------------------------------
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EXPORT_C void CXmlElement::InsertChildL(TInt aIndexToInsertBefore, CXmlElement* aElement)
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{
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	if(!iChildList)
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	{
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		iChildList = new (ELeave) CArrayPtrFlat<CNode>(KGranularity);
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	}
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	iChildList->InsertL(aIndexToInsertBefore, aElement);
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}
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//-------------------------------------------------------------------------
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EXPORT_C const TDesC* CXmlElement::Attribute(const TDesC& aAttributeName) const
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{
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	const TInt count = AttributeCount();
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	TInt length=aAttributeName.Length();
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	const TText* stringPtr=aAttributeName.Ptr();
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	for (TInt i = 0; i < count; i++)
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	{ 
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		TXmlAttributeType name;
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		CBase* att=AttributeByIndex(i,name);
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		if (Compare(length,stringPtr,*name))
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			return (TDesC*)((CDataDelete*)att)->Data();
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	}  
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	return NULL;
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}
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//-------------------------------------------------------------------------
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EXPORT_C void CXmlElement::SetAttributeL(const TDesC& aAttributeName, 
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										 const TDesC& aAttributeValue, 
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										 CAttributeLookupTable& aAttributeLUT)
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{
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	TXmlAttributeType type = aAttributeLUT.Des2IDL(aAttributeName);
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	HBufC* attrValue = aAttributeValue.AllocLC();
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	CDataDelete* attrib = new (ELeave) CDataDelete((HBufC16*)attrValue);
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	CleanupStack::Pop(); // attrValue
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	CleanupStack::PushL(attrib);
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	AddAttributeL(type, attrib);
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	CleanupStack::Pop(); // attrib
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}
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//-------------------------------------------------------------------------
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EXPORT_C void CXmlElement::SetTextL(const TDesC16& aData)
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	{
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	HBufC* data = aData.AllocLC();
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	CTypedNode<TXmlElementType, TXmlAttributeType>::SetDataL(data);
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	CleanupStack::Pop(data);
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	}
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//-------------------------------------------------------------------------
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EXPORT_C void CXmlElement::SetDataItemL(CBase* aDataItem, CAttributeLookupTable& aAttributeLUT)
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{
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	__ASSERT_DEBUG(aDataItem, Panic(EXmlElPanicInvalidDataItem));
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	TXmlAttributeType type = aAttributeLUT.Des2IDL(KXmlElementDataItemAttributeName);
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	CDataItemAttribute* attrib = new (ELeave) CDataItemAttribute;
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   113
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	CleanupStack::PushL(attrib);
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   115
	AddAttributeL(type, attrib);
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	CleanupStack::Pop(); // attrib
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   117
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	// Take ownership last
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	attrib->iDataItem = aDataItem;
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}
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   121
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//-------------------------------------------------------------------------
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   123
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EXPORT_C void CXmlElement::DeleteDataItem(CAttributeLookupTable& aAttributeLUT)
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{
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	TXmlAttributeType type = NULL;
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	TRAPD(err, type = aAttributeLUT.Des2IDL(KXmlElementDataItemAttributeName));
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	__ASSERT_DEBUG(err==KErrNone, Panic(EXmlElPanicInvalidDataItem));
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	if(err==KErrNone)
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		{
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		// Delete data item
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		DeleteAttribute(type);
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		}
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}
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   135
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//-------------------------------------------------------------------------
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   137
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EXPORT_C CBase* CXmlElement::DataItem() const
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{
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	const TInt count = AttributeCount();
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	TPtrC attName(KXmlElementDataItemAttributeName);
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	TInt length=attName.Length();
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	const TText* stringPtr=attName.Ptr();
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	for (TInt i = 0; i < count; i++)
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	{
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		TXmlAttributeType name;
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		CBase* att=AttributeByIndex(i,name);
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		if (Compare(length,stringPtr,*name))
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			return ((CDataItemAttribute*)att)->iDataItem;
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	}
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	return NULL;
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   152
}
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   153
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//-------------------------------------------------------------------------
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   155
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EXPORT_C TInt CXmlElement::ChildIndex(CXmlElement* aChild) const
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{
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	TInt i;
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	for( i=0; i < Count(); i++)
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   160
	{
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		if( Child(i) == aChild )
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			return(i);
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   163
	}
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	return( -1 );
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   165
}
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   166
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   167
//#ifdef _DEBUG
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// Write the name of the class into a debug file
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void CXmlElement::WriteNameL(RFile& aFile, TInt aIndentation)
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{
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	// Write line feed
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	aFile.Write(_L8("\r\n"));
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   173
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	// Write as many tabs as the current indentation level
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	for (TInt i = 0; i < aIndentation; i++)
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   176
	{
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		aFile.Write(_L8("\t"));
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   178
	}
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   179
 
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	// Write the name of element
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   181
	TXmlElementType type = Type();
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   182
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   183
	if (type)
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   184
	{
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   185
		// Convert to 8 bit
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   186
		HBufC8* type8 = HBufC8::NewL(type->Length());
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   187
		type8->Des().Copy(*type);
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   188
		aFile.Write(*type8);
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   189
		delete type8;
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   190
	}
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   191
	else
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   192
		aFile.Write(_L8("Error: Type = NULL"));
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   193
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   194
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   195
	// Write attributes
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   196
	const TInt count = AttributeCount();
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   197
	if(count > 0 || Data())
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   198
	{
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   199
		aFile.Write(_L8(" ("));
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   200
	}
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   201
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   202
	for (TInt a = 0; a < count; a++)
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   203
	{
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   204
		if(a>0 && count>1)
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   205
		{
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   206
			aFile.Write(_L8("\", "));
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   207
		}
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   208
		TXmlAttributeType type = AttributeTypeByIndex(a);
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   209
		// Convert to 8 bit
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   210
		HBufC8* type8 = HBufC8::NewL(type->Length());
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   211
		type8->Des().Copy(*type);
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   212
		aFile.Write(*type8);
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   213
		delete type8;
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parents:
diff changeset
   214
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   215
		aFile.Write(_L8(" = \""));
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parents:
diff changeset
   216
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   217
		const TDesC* attrib = Attribute(a);
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   218
		HBufC8* attrib8 = HBufC8::NewL(attrib->Length());
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   219
		attrib8->Des().Copy(*attrib);
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   220
		aFile.Write(*attrib8);
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   221
		delete attrib8;
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   222
	}
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parents:
diff changeset
   223
 
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   224
	// Write data
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   225
	if (Data())
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   226
	{
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   227
		// Data is expected to be a text (for now)
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   228
		aFile.Write(_L8("\""));
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   229
		const TDesC* data = (TDesC*)Data();
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		HBufC8* data8 = HBufC8::NewL(data->Length());
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		data8->Des().Copy(*data);
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		aFile.Write(*data8);
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		delete data8;
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		aFile.Write(_L8("\""));
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	}
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	if(count>0)
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	{
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		// Write ")
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		aFile.Write(_L8("\")"));
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	}
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	else if(Data())
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	{
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		// Write )
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		aFile.Write(_L8(")"));
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	}
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}
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//-------------------------------------------------------------------------
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// Write name of class in debug file
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void CXmlElement::StartWriteL(RFile& aFile, TInt aIndentation)
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{
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	// Write itself
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	WriteNameL(aFile, aIndentation);
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	// Write children with one tab stop more
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	aIndentation++;
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	const TInt count = Count();
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	for (TInt i = 0; i < count; i++)
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	{
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		Child(i)->StartWriteL(aFile, aIndentation);
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	}
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}
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EXPORT_C void CXmlElement::WriteIntoFileL() 
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{ 
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	RFs fileSession;
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	User::LeaveIfError(fileSession.Connect());
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	CleanupClosePushL(fileSession);
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	RFile file2;
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	TPtrC filePath;
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	filePath.Set( _L("c:\\tree.txt"));
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	User::LeaveIfError(file2.Replace( fileSession, filePath , EFileWrite ));
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	CleanupClosePushL(file2);
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	// Write contents
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	StartWriteL(file2, 0);
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	CleanupStack::PopAndDestroy(2);	// fileSession, file2
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}
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//#endif
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#ifndef __WAP_MONOLITHIC__
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// Its a standalone DLL
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//-------------------------------------------------------------------------
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GLDEF_C void Panic(TXmlElementPanic aPanic)
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{
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	User::Panic(_L("XML-ELM"),aPanic);	
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}
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//-----------------------------------------------------------------------------
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//    	Dlls entry point
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//-----------------------------------------------------------------------------
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#ifndef EKA2
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GLDEF_C TInt E32Dll (TDllReason)
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{
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	return KErrNone;
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}
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#endif // EKA2
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#endif // __WAP_MONOLITHIC__
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