smsprotocols/smsstack/smsu/inc/smsustrm.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:41:59 +0200
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// Copyright (c) 1997-2009 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:
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// This file contains the header file of the Sms socket Buffers.
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// 
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//
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/**
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 @file
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*/
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#if !defined (__SMSUSTRM_H__)
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#define __SMSUSTRM_H__
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#if !defined(__E32STD_H__)
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#include <e32std.h>
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#endif
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#if !defined(__S32BUF_H__)
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#include <s32buf.h>
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#endif
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#if !defined(__S32STRM_H__)
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#include <s32strm.h>
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#endif
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class RSocket;
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/**
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 *  @publishedAll
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 *  @released
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 */
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const TInt KSmsMaxSegmentLength=0x100;
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/**
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 *  An SMS stream buffer to read and write over a socket.
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 *  @publishedAll
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 *  @released 
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 */
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class RSmsSocketBuf : public TStreamBuf
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	{
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public:
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	RSmsSocketBuf(RSocket& aSocket);
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private:
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// from TStreamBuf
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	TInt UnderflowL(TInt aMaxLength);
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	void OverflowL();
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	void DoSynchL();
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private:
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	void SocketWriteL();
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//
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	inline TInt Lag(TRead) const;
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	inline TInt Lag(TWrite) const;
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private:
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	RSocket& iSocket;
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	TUint8 iBuffer[KSmsMaxSegmentLength];
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	};
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/**
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 *  Stream that reads a CSmsMessage object across a socket.
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 *  @publishedAll
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 *  @released 
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 */
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class RSmsSocketReadStream : public RReadStream
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	{
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public:
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	IMPORT_C RSmsSocketReadStream(RSocket& aSocket);
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private:
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	RSmsSocketBuf iBuf;
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	};
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/**
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 *  Stream that writes a CSmsMessage object across a socket.
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 *  @publishedAll
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 *  @released 
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 */
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class RSmsSocketWriteStream : public RWriteStream
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	{
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public:
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	IMPORT_C RSmsSocketWriteStream(RSocket& aSocket);
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private:
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	RSmsSocketBuf iBuf;
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	};
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#include "smsustrm.inl"
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#endif // !defined __SMSUSTRM_H__