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/*
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* Copyright (c) 2010 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: Special AT command handler
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*
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*/
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#include "DunAtSpecialCmdHandler.h"
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#include "DunDebug.h"
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const TInt KDefaultGranularity = 1;
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// AT command(s) below is part of the AT&FE0Q0V1&C1&D2+IFC=3,1. command which
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// is sent by MAC. There is no delimiter between "AT&F" and "E0".
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// Only list those commands where alphabetical boundary detection is needed
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// (i.e. "AT&F0" is not needed as "AT&F0E0" has non-alphabetical boundary)
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_LIT8( KSpecialATCmd1, "AT&F" );
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// ---------------------------------------------------------------------------
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// Two-phased constructor.
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// ---------------------------------------------------------------------------
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//
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CDunAtSpecialCmdHandler* CDunAtSpecialCmdHandler::NewL()
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{
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CDunAtSpecialCmdHandler* self = new (ELeave) CDunAtSpecialCmdHandler();
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CleanupStack::PushL( self );
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self->ConstructL();
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CleanupStack::Pop( self );
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return self;
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}
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// ---------------------------------------------------------------------------
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// CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler
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// ---------------------------------------------------------------------------
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//
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CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler()
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{
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}
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// ---------------------------------------------------------------------------
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// CDunAtSpecialCmdHandler::ConstructL
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// ---------------------------------------------------------------------------
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//
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void CDunAtSpecialCmdHandler::ConstructL()
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{
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iSpecialCmds = new (ELeave) CDesC8ArrayFlat( KDefaultGranularity );
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// Add here all special commands which need to be handled
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iSpecialCmds->AppendL( KSpecialATCmd1 );
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}
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// ---------------------------------------------------------------------------
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// Destructor.
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// ---------------------------------------------------------------------------
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//
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CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler()
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler()") ));
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delete iSpecialCmds;
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler() complete") ));
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}
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// ---------------------------------------------------------------------------
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// Checks if the command has to be treated special way.
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// For example in case of MAC, it sends command AT&FE0Q0V1&C1&D2+IFC=3,1.
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// meaning there is no delimiters in the command.
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// In case of MAC we try to search AT&F (sub command) string from the beginning
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// of the command.
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// Search is done character by character basis.
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// ---------------------------------------------------------------------------
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//
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TBool CDunAtSpecialCmdHandler::IsCompleteSubCommand( TChar aCharacter )
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand()") ));
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iBuffer.Append( aCharacter );
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TBool completeSubCmd = EFalse;
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if( !IsDataReadyForComparison(iBuffer.Length()) )
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{
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// No need to do comparison because we don't have correct amount of data
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), no need to compare") ));
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return completeSubCmd;
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}
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TInt count = iSpecialCmds->Count();
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for ( TInt i=0; i<count; i++ )
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{
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if( iSpecialCmds->MdcaPoint(i).Compare(iBuffer) == 0 )
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), match found, cmd index %d"), i ));
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// Reset internal buffer for next comparison.
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ResetComparisonBuffer();
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completeSubCmd = ETrue;
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break;
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}
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}
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand() complete") ));
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return completeSubCmd;
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}
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// ---------------------------------------------------------------------------
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// Resets the buffer used for comparisons
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// ---------------------------------------------------------------------------
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//
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void CDunAtSpecialCmdHandler::ResetComparisonBuffer()
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::ResetComparisonBuffer()") ));
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iBuffer.FillZ();
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iBuffer.Zero();
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::ResetComparisonBuffer() complete") ));
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}
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// ---------------------------------------------------------------------------
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// Defines when comparison is excecuted, checks if the data lengths are equal.
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// ---------------------------------------------------------------------------
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//
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TBool CDunAtSpecialCmdHandler::IsDataReadyForComparison( TInt aLength )
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison()") ));
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TInt count = iSpecialCmds->Count();
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for ( TInt i=0; i<count; i++ )
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{
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if( iSpecialCmds->MdcaPoint(i).Length() == aLength )
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison() (ready) complete") ));
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return ETrue;
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}
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}
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison() (not ready) complete") ));
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return EFalse;
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}
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// ---------------------------------------------------------------------------
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// Defines minimum length of the special commands.
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// ---------------------------------------------------------------------------
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//
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TInt CDunAtSpecialCmdHandler::MinimumLength()
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{
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::MinimumLength()") ));
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TInt length = iSpecialCmds->MdcaPoint(0).Length();
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TInt count = iSpecialCmds->Count();
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for ( TInt i=1; i<count; i++ )
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{
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if( iSpecialCmds->MdcaPoint(i).Length() < length )
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{
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length = iSpecialCmds->MdcaPoint(i).Length();
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break;
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}
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}
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FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::MinimumLength() complete") ));
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return length;
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}
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