williamr@2: // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@4: // under the terms of "Eclipse Public License v1.0"
williamr@2: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: //
williamr@4: /**
williamr@4:  * @file 
williamr@4:  * @publishedAll
williamr@4:  * @released
williamr@4:  */
williamr@2: 
williamr@2: #if !defined(__IMCVCODC_H__)
williamr@2: #define __IMCVCODC_H__
williamr@2: 
williamr@2: #include <s32buf.h>
williamr@2: #include <s32stor.h>
williamr@2: #include <txtrich.h>
williamr@2: #include <miutatch.h>
williamr@2: #include <miutconv.h>
williamr@2: #include <miuthdr.h>
williamr@2: #include <mentact.h>		// CMsgActive
williamr@2: 
williamr@2: #include <imcvdata.h>
williamr@2: #include <imcvtext.h>
williamr@2: #include <imutdll.h>
williamr@2: 
williamr@2: #define KBase64 _L("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=")
williamr@2: #define KCharFormat _L("%c")
williamr@2: 
williamr@2: // Shared implementation code	
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@4: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: protected:
williamr@2: 	// base64 and UU coding defines.
williamr@2: 	enum EMaskValues{ ESixBitMask = 0x3F, EEightBitMask = 0xFF };
williamr@2: 	enum EMaskShiftValues{ ESix = 6, EFour = 4, ETwo = 2, EZero = 0 };
williamr@2: 
williamr@2: public:
williamr@2: 	virtual TInt Encode( const TDesC8& aSrcString, TDes8& rDestString)=0 ;
williamr@2: 	virtual TBool Decode( const TDesC8& aInputLine, TDes8& rOutputLine)=0;
williamr@2: 
williamr@2: protected:
williamr@2: 	// TImCodec();
williamr@2: 	inline TBool IsDigit( TChar aChar );
williamr@2: 	};
williamr@2: 
williamr@2: 
williamr@2: // Interface for sending file data.
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImFileCodec : public TImCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@4: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: public:
williamr@2: 	virtual TInt PrefixNextLineL( TDes8& rOutputLine, const TFileName& aName, TInt& rPaddingCount );
williamr@2: 	virtual TInt PostfixNextLine( TDes8& rOutputLine, TInt& rPaddingCount );
williamr@2: 	virtual void Initialise();
williamr@2: 
williamr@2: protected:
williamr@2: 	TInt iPrefixState;
williamr@2: 	TInt iPostfixState;
williamr@2: 	};	
williamr@2: 
williamr@2: // Dummy, just copies
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImCodecNull :  public TImFileCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@4: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: public:
williamr@2: 	TInt Encode( const TDesC8& aSrcString, TDes8& rDestString);
williamr@2: 	TBool Decode( const TDesC8& aInputLine, TDes8& rOutputLine);
williamr@2: 	};
williamr@2: 	
williamr@2: // Quoted-printable encoding/decoding
williamr@2: 
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImCodecQP : public TImFileCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@4: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: public:
williamr@2: 	IMPORT_C TImCodecQP();
williamr@2: 	IMPORT_C TInt Encode( const TDesC8& aSrcString, TDes8& rDestString);
williamr@2: 	IMPORT_C TBool Decode( const TDesC8& aInputLine, TDes8& rOutputLine);
williamr@2: 
williamr@2: 	// Not to be used anymore..
williamr@2: 	IMPORT_C TInt EncodeRichText( const TDesC8& aInputLine, TDes8& rOutputLine);
williamr@2: 	IMPORT_C TInt DecodeRichText( const TDesC8& aSrcString, TDes& rDestString );
williamr@2: 
williamr@2: 	// Functions which allow flexiblity. Can replace the '=' char or add characters..
williamr@2: 	// to what is defined as 'plain.
williamr@2: 	inline void AddPlainChar(const TDesC8&  aCharList );
williamr@2: 	inline void AddEncodeChar(const TDesC8&  aCharList );
williamr@2: 	inline void SetQPChar( TUint8 aChar);
williamr@2: 
williamr@2: 	inline TUint8 ReplacementChar( TChar aControlChar );
williamr@2: 	inline TBool IsPlain( TChar aChar );
williamr@2: 
williamr@2: private:
williamr@2: 	TBool SmartBreak( TInt written, const TDesC8& pSource );
williamr@2: 	inline TBool IsBreakable( TChar aChar);
williamr@2: 	inline void AddSoftLineBreak(TDes8& aPtr, TInt& aPadding, TInt& aWritten);
williamr@2: 	inline void AddSoftLineBreak(const TUint8* apEnd, TUint8* aPtr, TInt& aPadding, TInt& aWritten);
williamr@2: 
williamr@2: private:
williamr@2: 	TUint8 iQPCharacter;
williamr@2: 	TPtrC8 iPlainCharList;  
williamr@2: 	TPtrC8 iEncodeCharList;  
williamr@2: 
williamr@2: 	TInt iPaddingCount;
williamr@2: 	};
williamr@2: 
williamr@2: 
williamr@2: 
williamr@2: // Base64 coding/decoding
williamr@2: 
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImCodecB64 : public TImFileCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: private:
williamr@2: 	// base64 coding defines
williamr@2: 	enum{ EPadChar = 64 };
williamr@2: 
williamr@2: public:
williamr@2: 	IMPORT_C TImCodecB64();
williamr@2: 	IMPORT_C TInt Encode( const TDesC8& aSrcString, TDes8& rDestString);
williamr@2: 	IMPORT_C TBool Decode( const TDesC8& aSrcString, TDes8& rDestString);
williamr@2:  	IMPORT_C void  Initialise();
williamr@2: 
williamr@2: protected:
williamr@2: 	TInt DoEncode(const TDesC8& aSrcString, TDes8& rDestString, TBool aInsertLineBreaks);
williamr@2: 
williamr@2: private:
williamr@2: 	TInt iShiftStored;
williamr@2: 	TInt iMaskShiftStored;
williamr@2: 	};
williamr@2: 
williamr@4: #ifndef SYMBIAN_ENABLE_SPLIT_HEADERS  
williamr@4: #include "cimconvertheader.h"
williamr@4: #endif
williamr@2: 
williamr@2: // UU coding/decoding
williamr@2: 
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: class TImCodecUU : public TImFileCodec
williamr@2: //----------------------------------------------------------------------------------------
williamr@2: /**
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: 	{
williamr@2: private:
williamr@2: 	// UU coding defines
williamr@2: 
williamr@2: 	enum{ ESpace = 32, EBackQuote = 96 };
williamr@2: 
williamr@2: 	enum TImBodyPostfix
williamr@2: 		{
williamr@2: 		EInvertedComma = 0,
williamr@2: 		EEndString,
williamr@2: 		EEndOfPostfix
williamr@2: 		};
williamr@2: 
williamr@2: public:
williamr@2: 	IMPORT_C TImCodecUU();
williamr@2: 	IMPORT_C TInt Encode( const TDesC8& aSrcString, TDes8& rDestString );
williamr@2: 	IMPORT_C TBool Decode( const TDesC8& aSrcString, TDes8& rDestString );
williamr@2: 	TInt PrefixNextLineL( TDes8& rOutputLine, const TFileName& aName, TInt& rPaddingCount );
williamr@2: 	TInt PostfixNextLine( TDes8& rOutputLine, TInt& rPaddingCount );
williamr@2: private:
williamr@2: 	void AppendFilenameL( TDes8& rOutputLine, const TFileName& aName );
williamr@2: 	
williamr@2: 	};
williamr@2: 
williamr@4: #endif
williamr@2: