--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/localconnectivityservice/dun/atext/src/DunAtSpecialCmdHandler.cpp	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,161 @@
+/*
+* Copyright (c) 2010 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:  Special AT command handler
+*
+*/
+
+#include "DunAtSpecialCmdHandler.h"
+#include "DunDebug.h"
+
+const TInt KDefaultGranularity = 1;
+
+// AT command(s) below is part of the AT&FE0Q0V1&C1&D2+IFC=3,1. command which
+// is sent by MAC. There is no delimiter between "AT&F" and "E0".
+// Only list those commands where alphabetical boundary detection is needed
+// (i.e. "AT&F0" is not needed as "AT&F0E0" has non-alphabetical boundary)
+_LIT8( KSpecialATCmd1, "AT&F" );
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CDunAtSpecialCmdHandler* CDunAtSpecialCmdHandler::NewL()
+    {
+    CDunAtSpecialCmdHandler* self = new (ELeave) CDunAtSpecialCmdHandler();
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler
+// ---------------------------------------------------------------------------
+//
+CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler()
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// CDunAtSpecialCmdHandler::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CDunAtSpecialCmdHandler::ConstructL()
+    {
+    iSpecialCmds = new (ELeave) CDesC8ArrayFlat( KDefaultGranularity );
+    // Add here all special commands which need to be handled
+    iSpecialCmds->AppendL( KSpecialATCmd1 );
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler()
+    {
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler()") ));
+    delete iSpecialCmds;
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// Checks if the command has to be treated special way.
+// For example in case of MAC, it sends command AT&FE0Q0V1&C1&D2+IFC=3,1.
+// meaning there is no delimiters in the command.
+// In case of MAC we try to search AT&F (sub command) string from the beginning
+// of the command.
+// Search is done character by character basis.
+// ---------------------------------------------------------------------------
+//
+TBool CDunAtSpecialCmdHandler::IsCompleteSubCommand( TChar aCharacter )
+    {
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand()") ));
+    iBuffer.Append( aCharacter );
+    TBool completeSubCmd = EFalse;
+
+    if( !IsDataReadyForComparison(iBuffer.Length()) )
+        {
+        // No need to do comparison because we don't have correct amount of data
+        FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), no need to compare") ));
+        return completeSubCmd;
+        }
+
+    TInt count = iSpecialCmds->Count();
+    for ( TInt i=0; i<count; i++ )
+        {
+        if( iSpecialCmds->MdcaPoint(i).Compare(iBuffer) == 0 )
+            {
+            FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), match found, cmd index %d"), i ));
+            // Reset internal buffer for next comparison.
+            ResetComparisonBuffer();
+            completeSubCmd = ETrue;
+            break;
+            }
+        }
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand() complete") ));
+    return completeSubCmd;
+    }
+
+// ---------------------------------------------------------------------------
+// Resets the buffer used for comparisons
+// ---------------------------------------------------------------------------
+//
+void CDunAtSpecialCmdHandler::ResetComparisonBuffer()
+    {
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::ResetComparisonBuffer()") ));
+    iBuffer.FillZ();
+    iBuffer.Zero();
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::ResetComparisonBuffer() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// Defines when comparison is excecuted, checks if the data lengths are equal.
+// ---------------------------------------------------------------------------
+//
+TBool CDunAtSpecialCmdHandler::IsDataReadyForComparison( TInt aLength )
+    {
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison()") ));
+    TInt count = iSpecialCmds->Count();
+    for ( TInt i=0; i<count; i++ )
+        {
+        if( iSpecialCmds->MdcaPoint(i).Length() == aLength )
+            {
+            FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison() (ready) complete") ));
+            return ETrue;
+            }
+        }
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsDataReadyForComparison() (not ready) complete") ));
+    return EFalse;
+    }
+
+// ---------------------------------------------------------------------------
+// Defines minimum length of the special commands.
+// ---------------------------------------------------------------------------
+//
+TInt CDunAtSpecialCmdHandler::MinimumLength()
+    {
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::MinimumLength()") ));
+    TInt length = iSpecialCmds->MdcaPoint(0).Length();
+    TInt count = iSpecialCmds->Count();
+    for ( TInt i=1; i<count; i++ )
+        {
+        if( iSpecialCmds->MdcaPoint(i).Length() < length )
+            {
+            length = iSpecialCmds->MdcaPoint(i).Length();
+            break;
+            }
+        }
+    FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::MinimumLength() complete") ));
+    return length;
+    }