--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smsprotocols/smsstack/gsmu/inc/gsmubuf.h	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,130 @@
+// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// This file contains the header file of the CSmsBuffers.
+// 
+//
+
+/**
+ @file
+*/
+
+#ifndef __GSMUBUF_H__
+#define __GSMUBUF_H__
+
+#include <e32std.h>
+#include <s32strm.h>
+
+class CEditableText;
+class RReadStream;
+class RWriteStream;
+
+
+/**
+ *  The base class for all SMS buffers.
+ *  @publishedAll
+ *  @released
+ */
+class CSmsBufferBase : public CBase
+	{
+public:
+	enum
+		{
+		EMaxBufLength=0x100
+		};
+public:
+	/**
+	 *  Gets the number of characters in the buffer.
+	 *  
+	 *  	@return The number of characters in the buffer. 
+	 */
+	virtual TInt Length() const=0;
+	/**
+	 *  Extracts buffer data to a descriptor.
+	 *  
+	 *  @param aBuf On return, buffer data
+	 *  @param aPos Position within buffer to begin reading
+	 *  	@param aLength The number of bytes to read from the buffer 
+	 */
+	virtual void Extract(TDes& aBuf,TInt aPos,TInt aLength) const=0;
+	/**
+	 *  Inserts data into the buffer.
+	 *  
+	 *  @param aPos Position in the buffer to insert the data
+	 *  	@param aBuf The data to insert into the buffer 
+	 */
+	virtual void InsertL(TInt aPos,const TDesC& aBuf)=0;
+	/**
+	 *  Deletes data from the buffer.
+	 *  
+	 *  @param aPos Position in the buffer to delete the data
+	 *  	@param aLength The number of bytes to delete from the buffer 
+	 */
+	virtual void DeleteL(TInt aPos,TInt aLength)=0;
+	/** Resets the buffer. */
+	virtual void Reset()=0;
+	IMPORT_C void InternalizeL(RReadStream& aStream);
+	IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+	};
+
+
+/**
+ *  This is the simplest implementation of CSmsBufferBase.
+ *  
+ *  It stores the buffer in an array of TTexts.
+ *  @publishedAll
+ *  @released
+ */
+class CSmsBuffer : public CSmsBufferBase
+	{
+public:
+	IMPORT_C static CSmsBuffer* NewL();
+	IMPORT_C ~CSmsBuffer();
+	IMPORT_C TInt Length() const;
+	IMPORT_C void Extract(TDes& aBuf,TInt aPos,TInt aLength) const;
+	IMPORT_C void InsertL(TInt aPos,const TDesC& aBuf);
+	IMPORT_C void DeleteL(TInt aPos,TInt aLength);
+	IMPORT_C void Reset();
+private:
+	CSmsBuffer();
+private:
+
+	CArrayFix<TText>* iBuffer;
+	};
+
+
+/**
+ *  SMS buffer, implemented as a thin wrapper over CEditableText.
+ *  
+ *  This class is designed to be used by the Message Server, which stores SMS
+ *  text as CRichText, which is derived from CEditableText.
+ *  @publishedAll
+ *  @released
+ */
+class CSmsEditorBuffer : public CSmsBufferBase
+	{
+public:
+	IMPORT_C static CSmsEditorBuffer* NewL(CEditableText& aText);
+	IMPORT_C ~CSmsEditorBuffer();
+	IMPORT_C TInt Length() const;
+	IMPORT_C void Extract(TDes& aBuf,TInt aPos,TInt aLength) const;
+	IMPORT_C void InsertL(TInt aPos,const TDesC& aBuf);
+	IMPORT_C void DeleteL(TInt aPos,TInt aLength);
+	IMPORT_C void Reset();
+private:
+	CSmsEditorBuffer(CEditableText& aText);
+private:
+	CEditableText& iText;
+	};
+
+#endif // !defined __GSMUBUF_H__