/*

* Copyright (c) 2007-2010 Sebastian Brannstrom, Lars Persson, EmbedDev AB

*

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* EmbedDev AB - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef FEEDPARSER_H_

#define FEEDPARSER_H_

#include "FeedParserObserver.h"

#include "FeedInfo.h"

#include <xml/parser.h> // for CParser

#include <xml/contenthandler.h>	// for Xml::MContentHandler

#include <xml/documentparameters.h>

_LIT(KTagItem, "item");

_LIT(KTagTitle, "title");

_LIT(KTagImage, "image");

_LIT(KTagLink, "link");

_LIT(KTagDescription, "description");

_LIT(KTagUrl, "url");

_LIT(KTagLength, "length");

_LIT(KTagChannel, "channel");

_LIT(KTagEnclosure, "enclosure");

_LIT(KTagPubDate, "pubDate");

_LIT(KTagGuid, "guid");

_LIT(KTagLastBuildDate, "lastBuildDate");

_LIT(KTagHref, "href");

enum TFeedState {

	EStateRoot,

	EStateChannel,

	EStateChannelTitle,

	EStateChannelLink,

	EStateChannelLastBuildDate,

	EStateChannelDescription,

	EStateChannelImage,

	EStateChannelImageUrl,

	EStateItem,

	EStateItemTitle,

	EStateItemLink,

	EStateItemEnclosure,

	EStateItemDescription,

	EStateItemPubDate,

	EStateItemGuid

};

enum TEncoding {

	EUtf8,

	ELatin1

};

const int KBufferLength = 1024;

class CFeedParser : public CBase, public Xml::MContentHandler 

{

public:

	CFeedParser(MFeedParserObserver& aCallbacks, RFs& aFs);

	virtual ~CFeedParser();

public:

	void ParseFeedL(const TFileName &feedFileName, CFeedInfo *item, TUint aMaxItems);

public: // from MContentHandler

	void OnStartDocumentL(const Xml::RDocumentParameters& aDocParam, TInt aErrorCode);

	void OnEndDocumentL(TInt aErrorCode);

	void OnStartElementL(const Xml::RTagInfo& aElement, const Xml::RAttributeArray& aAttributes, TInt aErrorCode);

	void OnEndElementL(const Xml::RTagInfo& aElement, TInt aErrorCode);

	void OnContentL(const TDesC8& aBytes, TInt aErrorCode);

	void OnStartPrefixMappingL(const RString& aPrefix, const RString& aUri, TInt aErrorCode);

	void OnEndPrefixMappingL(const RString& aPrefix, TInt aErrorCode);

	void OnIgnorableWhiteSpaceL(const TDesC8& aBytes, TInt aErrorCode);

	void OnSkippedEntityL(const RString& aName, TInt aErrorCode);

	void OnProcessingInstructionL(const TDesC8& aTarget, const TDesC8& aData, TInt aErrorCode);

	void OnError(TInt aErrorCode);

	TAny* GetExtendedInterface(const TInt32 aUid);

	CFeedInfo& ActiveFeed();

private:

	MFeedParserObserver& iCallbacks;

	TFeedState iFeedState;

	CShowInfo* iActiveShow;

	CFeedInfo *iActiveFeed;

	TBuf<KBufferLength> iBuffer;

	TUint iUid;

	TUint iMaxItems;

	TUint iItemsParsed;

	TBool iStoppedParsing;

	TEncoding iEncoding;

	RFs& iRfs;

	TInt iFileSize;

};

#endif