1 // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __CHTMLTOCRTCONVPARSER_H__

    17 #define __CHTMLTOCRTCONVPARSER_H__

    18 

    19 #include <e32std.h>  

    20 #include <txtfrmat.h>

    21 #include "CHtmlToCrtConvHash.h"

    22 

    23 class CRichText;

    24 class CHtmlToCrtConvBuffer;

    25 class CHtmlToCrtConvHashTable;

    26 class CHtmlToCrtConvActionProcessor;

    27 class MHtmlToCrtConvResourceFile;

    28 

    29 const TInt KCharsProcessedInOneStep			= 100;

    30 const TInt KTagBufferLength					= 10;

    31 const TInt KAttributeBufferLength			= 10;

    32 const TInt KEntityBufferLength				= 10;

    33 

    34 //========================================================================

    35 

    36 class CHtmlToCrtConvAttribute : public CBase

    37 	{

    38 	public:

    39 		static CHtmlToCrtConvAttribute* NewLC(THtmlToCrtConvAttributeType aType, TDesC8& aValue);

    40 		~CHtmlToCrtConvAttribute();

    41 

    42 		inline const THtmlToCrtConvAttributeType Type() const {return iType;}

    43 		inline const TDesC8& Value() const {return *iValue;}

    44 

    45 	private:

    46 		CHtmlToCrtConvAttribute(THtmlToCrtConvAttributeType aType);

    47 		void ConstructL(TDesC8& aValue);

    48 

    49 	private:

    50 		THtmlToCrtConvAttributeType	iType;

    51 		HBufC8*						iValue;

    52 	};

    53 

    54 //=========================================================================

    55 

    56 class CHtmlToCrtConvParser : public CBase

    57 	{

    58 	public:

    59 		enum TTagState

    60 			{

    61 			ENoTag,

    62 			EOpeningTag,

    63 			EClosingTag

    64 			};

    65 

    66 	public:

    67 		static CHtmlToCrtConvParser* NewL(CRichText& aRichText, CHtmlToCrtConvBuffer& aBuffer, MHtmlToCrtConvResourceFile& aResourceFile);

    68 		~CHtmlToCrtConvParser();

    69 		TBool DoOneStepL();

    70 

    71 	private:

    72 		CHtmlToCrtConvParser(CHtmlToCrtConvBuffer& aBuffer);

    73 		void ConstructL(CRichText& aRichText, MHtmlToCrtConvResourceFile& aResourceFile);

    74 

    75 		TBool InspectCurrentCharacter(TChar aChar);

    76 		void  DoActionL(TChar aChar);

    77 

    78 		void  SeeWhiteSpaceCharacterInTag(TBool& aBool);

    79 		void  SeeSpecialCharactersInTag(TChar aChar, TBool& aBool);

    80 		void  SeeOtherCharactersInTag();

    81 		void  SeeOtherCharactersNotInTag(TBool& aBool);

    82 

    83 		void  DoTagOperationL();

    84 		void  DoEntityOperationL();

    85 		void  WriteToRichTextL();

    86 		void  WriteToTagBufferL(TChar aChar);

    87 		void  WriteToEntityBufferL(TChar aChar);

    88 		void  WriteToAttributeBufferL(TChar aChar);

    89 		void  WriteToAttributeValueBufferL(TChar aChar);

    90 		void  WriteToAttributeArrayL();

    91 

    92 	private:

    93 		enum TParserState

    94 		{

    95 		EInitialState,

    96 		ESeeStartOfTag,

    97 		ESeeEndOfTag,

    98 		ESeeClosingTagIndicator,

    99 		ESeeEquals,

   100 		ESeeExclamationMark,

   101 		ESeeEndOfTagWhileReadingJavascript,

   102 		EReadingOpeningTag,

   103 		EReadingClosingTag,

   104 		EReadingAttribute,

   105 		EReadingAttributeValue,

   106 		EReadingAttributeValueWithinInvCommas,

   107 		EReadingText,

   108 		EReadingJavascript,

   109 		EFinishedReadingTag,

   110 		EFinishedReadingAttribute,

   111 		EFinishedReadingAttributeValue,

   112 		EStartOfCharacterEntity,

   113 		EEndOfCharacterEntity,

   114 		EReadingCharacterEntity

   115 		};

   116 

   117 	private:

   118 		TPtrC16 iTextBuffer;

   119 		TBuf16<KTagBufferLength> iTagBuffer;

   120 		TBuf16<KEntityBufferLength> iEntityBuffer;

   121 		TBuf16<KAttributeBufferLength> iAttributeBuffer;

   122 		CBufBase* iAttributeValueBuffer;

   123 		RPointerArray<CHtmlToCrtConvAttribute> iAttributes;

   124 		TBuf16<2> iLastTwoCharacters;

   125 	

   126 		TParserState iParserState;

   127 		TTagState iTagState;

   128 		TBool iInTag;

   129 		TBool iInCharacterEntity;

   130 

   131 		TInt iBufferPosition;

   132 		TInt iStartOfTextPosition;

   133 		TInt iEndOfTextPosition;

   134 		TBool iEndOfBufferReached;

   135 

   136 		CHtmlToCrtConvBuffer& iBuffer;

   137 		CHtmlToCrtConvHashTable* iHashTable;

   138 		CHtmlToCrtConvActionProcessor* iActionProcessor;

   139 	};

   140 

   141 #endif