/*

* 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

*

*/

#ifndef C_CDUNATSPECIALCMDHANDLER_H

#define C_CDUNATSPECIALCMDHANDLER_H

#include <e32base.h>

#include <badesca.h>

const TInt KLineBufLength = (512 + 1);  // Set this the same as in KDunLineBufLength

/**

 *  Class for special AT command handler

 *

 *  @lib dunatext.lib

 *  @since TB9.2

 */

NONSHARABLE_CLASS( CDunAtSpecialCmdHandler ) : public CBase

    {

public:

    /**

     * Two-phased constructor.

     * @param None

     * @return Instance of self

     */

	static CDunAtSpecialCmdHandler* NewL();

    /**

    * Destructor.

    */

    ~CDunAtSpecialCmdHandler();

public:

    /**

     * 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 string basis.

     *

     * @since TB9.2

     * @param aCharacter Character to add

     * @return ETrue if data is ready for comparison, EFalse otherwise

     */

    TBool IsCompleteSubCommand( TChar aCharacter );

    /**

     * Resets the buffer used for comparisons

     *

     * @since TB9.2

     * @return None

     */

    void ResetComparisonBuffer();

private:

    CDunAtSpecialCmdHandler();

    void ConstructL();

    /**

     * Defines when comparison is excecuted, checks if the data lengths are

     * equal.

     *

     * @since TB9.2

     * @return ETrue if data is ready for comparison, EFalse otherwise

     */

    TBool IsDataReadyForComparison( TInt aLength );

    /**

     * Defines minimum length of the special commands.

     *

     * @since TB9.2

     * @return Minimum length of the special commands

     */

    TInt MinimumLength();

private:  // data

    /**

     * Buffer for temporary AT command input

     */

    TBuf8<KLineBufLength> iBuffer;

    /**

     * Special commands for parsing

     */

    CDesC8Array *iSpecialCmds;

    };

#endif  // C_CDUNATSPECIALCMDHANDLER_H