1 // Copyright (c) 2000-2009 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 // Segmentation and reassembly utility classes

    15 // 

    16 //

    17 

    18 /**

    19  @file

    20 */

    21 

    22 #ifndef __GSMUSAR_H__

    23 #define __GSMUSAR_H__

    24 

    25 #include <charconv.h>

    26 #include <gsmubuf.h>

    27 #include <gsmuelem.h>

    28 

    29 /**

    30  *  @internalComponent

    31  */

    32 _LIT8(KMOSES,"\x40\x4d\x64\xd3\x50\x00");

    33 /**

    34  *  @internalComponent

    35  */

    36 _LIT16(KNETWORK,"NETWORK");

    37 

    38 

    39 // Constants

    40 /**

    41  *  @internalComponent

    42  */

    43 const TUint8 KSms7BitAlphabetEscapeChar=0x1b;

    44 

    45 

    46 /**

    47  *  Segments unpacked data from a CsmsBufferBase

    48  *  @internalComponent

    49  */

    50 class CSmsBufferSegmenter : public CBase

    51 	{

    52 friend class CSmsUserData;

    53 public:

    54 // Construction / destruction methods

    55 	IMPORT_C static CSmsBufferSegmenter* NewLC(CSmsAlphabetConverter& aAlphabetConverter,const CSmsBufferBase& aBuffer,TInt aSegmentSize=0);

    56 	IMPORT_C ~CSmsBufferSegmenter();

    57 

    58 // Segmentation methods

    59 	void Reset();

    60 	IMPORT_C TBool SegmentNextL(TDes8& aSegmentBuffer, TInt& aUnconvertedChars,

    61 			                    TInt& aDowngradedChars,

    62 			                    TSmsEncoding aEncoding);

    63 	IMPORT_C TInt TotalConvertedLengthL(TSmsEncoding aEncoding);

    64 	TBool MoreL();

    65 

    66 	TSmsEncoding FindBestAlternativeEncodingL(TSmsEncoding aSuggestedEncoding,

    67 									          TInt aMaxBodyLength) const;

    68 

    69 protected:

    70 // Protected construction methods

    71 	CSmsBufferSegmenter(CSmsAlphabetConverter& aAlphabetConverter,const CSmsBufferBase& aBuffer,TInt aSegmentSize);

    72 	void ConstructL();

    73 

    74 // Protected helper methods

    75 	virtual TBool DoSegmentNextL(TDes8& aSegmentBuffer,TInt aSegmentSize,

    76 			                     TInt& aUnconvertedChars, TInt& aDowngradedChars,

    77 			                     TSmsEncoding aEncoding);

    78 	void CheckConvertedBufferAllocL(TInt aMaxLength);

    79 	TInt ElementsToReturnFromConvertedBufferL(TInt aSegmentSize);

    80 

    81 protected:

    82 // Private data

    83 	CSmsAlphabetConverter& iAlphabetConverter;

    84 	const CSmsBufferBase& iSmsBuffer;

    85 	TInt iElementsExtracted;

    86 	TInt iSegmentSize;

    87 	HBufC8* iConvertedBuffer;

    88 	TPtr8 iConvertedBufferPtr;

    89 	};

    90 

    91 

    92 /**

    93  *  @internalComponent

    94  */

    95 class CSmsEMSBufferSegmenter : public CSmsBufferSegmenter

    96 	{

    97 public:

    98 	IMPORT_C static CSmsEMSBufferSegmenter* NewLC(CSmsAlphabetConverter& aAlphabetConverter,const CSmsBufferBase& aBuffer, TInt aSegmentSize=0);

    99 

   100 	IMPORT_C TBool SegmentNextL(TDes8& aSegmentBuffer,TInt aSegmentSize,

   101 	                            TInt& aUnconvertedChars, TInt& aDowngradedChars,

   102 	                            TSmsEncoding aEncoding);

   103 

   104 	TInt SegmentL(TDes8& aSegmentBuffer, TInt aNativeChars, TInt aSegmentMax,

   105 			      TInt& aUnconvertedChars, TInt& aDowngradedChars,

   106 			      TSmsEncoding aEncoding);

   107 

   108 protected:

   109 	CSmsEMSBufferSegmenter(CSmsAlphabetConverter& aAlphabetConverter,const CSmsBufferBase& aBuffer,TInt aSegmentSize);

   110 

   111 	};

   112 

   113 

   114 /**

   115  *  TSmsBufferReassembler - reassembles (unpacked) data to CSmsBufferBase

   116  *  @internalComponent

   117  */

   118 class TSmsBufferReassembler

   119 	{

   120 public:

   121 // Construction / destruction methods

   122 	IMPORT_C TSmsBufferReassembler(CSmsAlphabetConverter& aAlphabetConverter,CSmsBufferBase& aBuffer);

   123 

   124 // Reassembly methods

   125 	IMPORT_C void ReassembleNextL(const TDesC8& aSegmentBuffer,

   126 			                      TSmsEncoding aEncoding, TBool aIsLast);

   127 

   128 private:

   129 	CSmsAlphabetConverter& iAlphabetConverter;

   130 	CSmsBufferBase& iSmsBuffer;

   131 	};

   132 

   133 #endif // __GSMUSAR_H__