1 /*

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

     3 *

     4 * All rights reserved.

     5 * This component and the accompanying materials are made available

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

     7 * which accompanies this distribution, and is available

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

     9 *

    10 * Initial Contributors:

    11 * EmbedDev AB - initial contribution.

    12 *

    13 * Contributors:

    14 *

    15 * Description:

    16 *

    17 */

    18 

    19 #ifndef FEEDPARSER_H_

    20 #define FEEDPARSER_H_

    21 

    22 #include "FeedParserObserver.h"

    23 #include "FeedInfo.h"

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

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

    26 #include <xml/documentparameters.h>

    27 

    28 _LIT(KTagItem, "item");

    29 _LIT(KTagTitle, "title");

    30 _LIT(KTagImage, "image");

    31 _LIT(KTagLink, "link");

    32 _LIT(KTagDescription, "description");

    33 _LIT(KTagUrl, "url");

    34 _LIT(KTagLength, "length");

    35 _LIT(KTagChannel, "channel");

    36 _LIT(KTagEnclosure, "enclosure");

    37 _LIT(KTagPubDate, "pubDate");

    38 _LIT(KTagLastBuildDate, "lastBuildDate");

    39 _LIT(KTagHref, "href");

    40 

    41 enum TFeedState {

    42 	EStateRoot,

    43 	EStateChannel,

    44 	EStateChannelTitle,

    45 	EStateChannelLink,

    46 	EStateChannelLastBuildDate,

    47 	EStateChannelDescription,

    48 	EStateChannelImage,

    49 	EStateChannelImageUrl,

    50 	EStateItem,

    51 	EStateItemTitle,

    52 	EStateItemLink,

    53 	EStateItemEnclosure,

    54 	EStateItemDescription,

    55 	EStateItemPubDate

    56 };

    57 

    58 enum TEncoding {

    59 	EUtf8,

    60 	ELatin1

    61 };

    62 

    63 const int KBufferLength = 1024;

    64 

    65 class CFeedParser : public CBase, public Xml::MContentHandler 

    66 {

    67 public:

    68 	CFeedParser(MFeedParserObserver& aCallbacks, RFs& aFs);

    69 	virtual ~CFeedParser();

    70 	

    71 public:

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

    73 	

    74 public: // from MContentHandler

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

    76 	void OnEndDocumentL(TInt aErrorCode);

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

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

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

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

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

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

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

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

    85 	void OnError(TInt aErrorCode);

    86 	TAny* GetExtendedInterface(const TInt32 aUid);

    87 	CFeedInfo& ActiveFeed();

    88 private:

    89 	MFeedParserObserver& iCallbacks;

    90 	TFeedState iFeedState;

    91 

    92 	CShowInfo* iActiveShow;

    93 	CFeedInfo *iActiveFeed;

    94 

    95 	TBuf<KBufferLength> iBuffer;

    96 	

    97 	TUint iMaxItems;

    98 	TUint iItemsParsed;

    99 	TBool iStoppedParsing;

   100 	TEncoding iEncoding;

   101 	RFs& iRfs;

   102 };

   103 

   104 #endif