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// Copyright (c) 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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//
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#ifndef LOGDYNBUF_H
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#define LOGDYNBUF_H
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#include <e32base.h>
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/**
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This class manages a 16-bit resizable buffer and offers functions which can be used for constructing
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SQL statements.
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AppendL(), and AppendNumL() can be used to append data to the end of the buffer.
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RLogDynBuf instance will try to expand the buffer if there is not enough available space for the data to be appended.
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The following code fragment shows how RLogDynBuf can be used:
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@code
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const TInt KGranularity = 128;
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RLogDynBuf buf;
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buf.CreateLC(KGranularity);
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buf.AppendL(_L("some data"));//AppendL() automatically expands the buffer if there is not enough place for the string
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buf.AppendNumL(1234); //AppendNumL() automatically expands the buffer if there is not enough place for the string
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buf.AppendL(_L("more data"));//AppendL() automatically expands the buffer if there is not enough place for the string
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......
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CleanupStack::PopAndDestroy(buf);
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@endcode
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@internalComponent
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*/
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NONSHARABLE_CLASS(RLogDynBuf)
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{
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public:
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inline RLogDynBuf();
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void CreateLC(TInt aGranularity);
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void Close();
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inline const TDesC& DesC() const;
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inline void SetLength(TInt aLength);
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inline TInt Length() const;
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void AppendL(const TDesC& aStr);
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private:
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void DoAllocL(TInt aLen);
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private:
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TInt iGranularity;
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RBuf iBuf;
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};
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/**
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Initializes RLogDynBuf data memebrs with default values.
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*/
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inline RLogDynBuf::RLogDynBuf() :
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iGranularity(0)
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{
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}
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/**
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@return Non-modifiable 16-bit descriptor to the data in the buffer.
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*/
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inline const TDesC& RLogDynBuf::DesC() const
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{
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return iBuf;
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}
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/**
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Sets the length of the data represented by the buffer to the specified value.
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@param aLength The new length of the buffer
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*/
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inline void RLogDynBuf::SetLength(TInt aLength)
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{
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__ASSERT_DEBUG(aLength >= 0, User::Invariant());
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iBuf.SetLength(aLength);
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}
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/**
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@return The length of the data in the buffer
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*/
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inline TInt RLogDynBuf::Length() const
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{
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return iBuf.Length();
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}
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#endif//LOGDYNBUF_H
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