messagingappbase/smilengine/engine/inc/smilparserold.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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/*
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* Copyright (c) 2003 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: smilparserold  declaration
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*
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*/
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#ifndef PARSESMIL_H
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#define PARSESMIL_H
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//  INCLUDES
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#include <e32base.h>
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#include <f32file.h>
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#include "smilpresentation.h"
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#include "parseelement.h"
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#include "smilobject.h"
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// FORWARD DECLARATIONS
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class CNode;
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class CResourceTestData;
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class CSmilAnchor;
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class CSmilTimeContainer;
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// CLASS DECLARATION
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/**
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*  ?one_line_short_description.
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*  ?other_description_lines
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*/
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class CParseSmil : public CBase
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    {
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        */
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        static CParseSmil* NewL( RFile& aFile, CSmilPresentation* aPresentation, RFs& aSession );
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        /**
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        * Destructor.
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        */
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        virtual	~CParseSmil();
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    public: // New functions
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        /**
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        * Makes the syntax tree
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        */
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        void MakeTreeL(); 
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		/**
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        * This function carries out the actual parsing
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        */
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		void DoParseL();
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		/**
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        * Inserts a SMIL element into a node
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        * @param TDesC8& aElement
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        * @param CNode& aNode
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        */
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		void FoundElementL( const TDesC8& aElement, CNode& aNode );
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		/**
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        * Get the element node in the index given
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        * @param TInt aIndex
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        * @return CNode* pointer to the node
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        */
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		inline CNode* Element( TInt aIndex );
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		/**
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        * Return the number of elements in the syntax tree
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        * @return TInt number of elements
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        */
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		inline TInt ElementCount(); 
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		/**
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        * Check that the elements match.
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        */
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		void CheckMatchingL();
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    public: // Functions from base classes
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        /**
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        * From ?base_class ?member_description.
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        * @param ?arg1 ?description
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        * @return ?description
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        */
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    protected:  // New functions
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        /**
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        * ?member_description.
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        * @param ?arg1 ?description
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        * @return ?description
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        */
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    protected:  // Functions from base classes
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        /**
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        * From ?base_class ?member_description
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        */
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    private:
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		/**
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        * By default EPOC constructor is private.
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        */
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		void ConstructL();
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   122
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		/**
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        * By default C++ constructor is private.
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        */
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       	CParseSmil( RFile& aFile, CSmilPresentation* aPresentation, RFs& aSession );
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		/**
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        * Parses the <region> tag of the presentation
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        * @param aPtr pointer to descriptor
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        */
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		void ParseRegionInfoL( TPtrC8& aPtr );
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   133
		
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		/**
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        * Parses the <smil> tag of the presentation
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        * @param aPtr pointer to descriptor
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        */
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		void ParseSmilInfo( TPtrC8& aPtr );
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		/**
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   141
        * Parses the <body> tag of the presentation
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   142
        * @param aPtr pointer to descriptor <- obsolete?
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        */
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   144
		TBool ParseSwitchL( TInt& aSkip, CSmilTimeContainer* aParent, CSmilAnchor* aAnchor );
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   145
		
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   146
		/**
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   147
        * Parses the <body> tag of the presentation
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   148
        * @param aPtr pointer to descriptor <- obsolete?
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        */
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		TBool EvaluateTestAttribute( const TInt aIndex,
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									 const TPtrC8& aValue,
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									 CResourceTestData& aTestData );
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   153
		
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		/**
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   155
        * Parses the <body> tag of the presentation
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   156
        * @param aPtr pointer to descriptor <- obsolete?
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   157
        */
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		void IsContainer( TMediaSmil& aMedia );
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   159
		
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   160
		/**
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   161
        * Parses the <body> tag of the presentation
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        * @param aPtr pointer to descriptor 
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   163
        */
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   164
		TBuf8<5> SelectEndingTag( const CSmilObject& aObject );
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   165
		
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		/**
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   167
        * Parses the <body> tag of the presentation
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        * @param aPtr pointer to descriptor 
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        */
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		TBuf8<7> SelectEndingTag( const TMediaSmil aMedia );
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   171
		
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		/**
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   173
        * Parses the <body> tag of the presentation
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        * @param aPtr pointer to descriptor 
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   175
        */
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   176
		TBuf8<7> SelectBeginTag( const TMediaSmil aMedia );
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   177
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		/**
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   179
        * Parses the <body> tag of the presentation
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        * @param aPtr pointer to descriptor 
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   181
        */
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   182
		void ParseHypeReferenceL( TPtrC8& aPtr, CSmilAnchor* aReference );
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   183
		
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		/**
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        * Parses the "I18n" collection of the presentation
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        * @param aPtr pointer to descriptor 
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   187
        */
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   188
		void ParseI18n( TPtrC8& aPtr );
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   189
		
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		/**
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   191
        * Parses the "core" collection of the presentation
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        * @param aPtr pointer to descriptor 
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   193
        */
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   194
		void ParseCore( TPtrC8& aPtr, CSmilObject* aObject );
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   195
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   196
		/**
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   197
        * Parses the <root-layout> tag of the presentation
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        * @param aPtr pointer to descriptor
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   199
        */
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		void ParseRootLayoutInfo( TPtrC8& aPtr );
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   201
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   202
		/**
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   203
        * Parses the <root-layout> tag of the presentation
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        * @param aPtr pointer to descriptor
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   205
        */
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   206
		void ParseLayoutInfo( TPtrC8& aPtr );
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   207
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		/**
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   209
        * Parses the <img> and <text> tag of the presentation
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        * @param aPtr pointer to descriptor
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   211
		* @param aObject media object
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   212
        */
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   213
		void ParseObjectL( TPtrC8& aPtr, CSmilMedia* aObject );
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   214
		
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   215
		/**
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   216
        * Parses the <ref> tag of the presentation
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   217
        * @param aPtr pointer to descriptor
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   218
        */
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   219
		void ParseRef( TPtrC8& aPtr, CSmilMedia* aObject );
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   220
		
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   221
		/**
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   222
        * Parses the <seq> tag of the presentation
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   223
        * @param aPtr pointer to descriptor
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   224
        */
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		void ParseContainerL( TPtrC8& aDes, CSmilTimeContainer* aContainer );
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   226
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		/**
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        * Parses the <seq> tag of the presentation
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   229
        * @param aPtr pointer to descriptor
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        */
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   231
		void ParseTimingAttributes( TPtrC8& aPtr, CSmilObject* aObject );
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   232
		
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		/**
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        * Parses the <seq> tag of the presentation
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        * @param aPtr pointer to descriptor
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        */
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		void ParseRestartAndFill( TPtrC8& aPtr, CSmilObject* aObject );
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		/**
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        * Parses the <seq> tag of the presentation
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        * @param aPtr pointer to descriptor
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        */
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		void ParseEndSync( TPtrC8& aPtr, CSmilTimeContainer* aContainer );
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		/**
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        * Searches for a text string located between "quotation marks".
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        * @param aInt indicates the point where the reading starts
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		* @param aPtr a pointer to the descriptor to search
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        */
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		const TPtrC8 TraverseTextBuffer( TInt aInt, TPtrC8& aPtr );
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		/**
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        * Searches for a text string located between "quotation marks".
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        * @param aInt indicates the point where the reading starts
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		* @param aPtr a pointer to the descriptor to search
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        */
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		const TPtrC TraverseTextBuffer( TInt aInt, TPtr& aPtr ); 
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		/**
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        * Searches for a text string located between "quotation marks",
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		* and converts the string into the corresponding numeric value.
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        * @param aInt indicates the point where the reading starts
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		* @param aPtr a pointer to descriptor
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		* @return the converted value as integer
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		* or -1 if the search fails
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        */
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		TInt TraverseDimension( TInt aInt, TPtrC8& aPtr );
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		/**
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        * A tag was found.
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		* @param TLex8 aLex
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		* @param CNode* aParent
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        */
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		void FoundTagL( TLex8 aLex, CNode* aParent );
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		/**
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        * If FindTagL() finds a valid tag it calls this
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		* to carry on with the processing
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		* @param TLex8 aLex
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		* @param CNode* aParent
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        */
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		void ContinueL( TLex8 aLex, CNode* aParent );
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		/**
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        * Find the start of the tag and check if it's a comment
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		* @param TLex8 aLex
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		* @return TPtrC8 - descriptor to a started tag
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        */
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		const TPtrC8 FindStartOfTagL( TLex8 aLex );
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		/**
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        * Check the validity of the element
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		* @param TDesC8& aTag
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		* @return TInt true or false
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        */
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		TInt IsValid( const TDesC8& aTag );
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		/**
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        * Walk through the presentation and check the 
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		* matching of the elements
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        */
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		void WalkL();
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		/**
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        * Read from file
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		* @param TInt& aRet - error code
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		* @return TLex8 - presentation
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        */
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		TLex8 ReadNext( TInt& aRet );
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    private:     // Data
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		enum ParseState {
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			EInitial, ESmil, EHead, EBody, ELayout
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		};
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		RFile&						iFile;
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		CSmilPresentation*			iPresentation;
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		RFs&						iSession;
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		TInt						iParse;
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		HBufC8*						iBuf;
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		HBufC8*						iBuffer;
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		CNode*						iNode;
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		CArrayPtrFlat<CNode>*		iArray;
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		CSmilObject*				iCurrent;
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		ParseState					iState;
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    };
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#include "parsesmil.inl"
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#endif      // ?INCLUDE_H   
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// End of File
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