/*

* 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:   This provides utility for loading a BT device name without

* localised to a string to be shown in GUI.

*

*/

inline TInt BluetoothUiUtil::GetSubstringKeyPos( 

        const TDes& aDes, const TDesC& aKey, 

        TInt aKeyPos, TInt& aKeyLength )

    {

    ASSERT( aKeyPos > KErrNotFound );

    _LIT(KPercentSymbol, "%" );

    // 32 would be to fit any key substring in practice:

    TBuf<32> key;

    TInt pos( KErrNotFound );

    // if the specified position is 0, check if "%<aKey>" (%U or %N) exists.

    if ( aKeyPos == 0 )

        {

        key.Copy( KPercentSymbol );

        key.Append(aKey);

        pos = aDes.Find( key );

        }

    // Either the key is not found, or aKeyPos is not 0.

    if ( pos == KErrNotFound )

        {

        key.Copy( KPercentSymbol );

        key.AppendNum( aKeyPos );

        key.Append( aKey );

        pos = aDes.Find( key );

        }

    if ( pos > KErrNotFound )

        {

        aKeyLength = key.Length();

        }

    return pos;

    }

inline TInt BluetoothUiUtil::GetStringSubstringKeyPos( 

        const TDes& aDes, TInt aKeyPos, TInt& aKeyLength )

    {

    _LIT(KStringKeyword,"U");

    TPtrC ptr( KStringKeyword );

    return GetSubstringKeyPos(aDes, ptr, aKeyPos, aKeyLength );

    }

inline void BluetoothUiUtil::AddSubstringL( 

        RBuf& aBuf, const TDesC& aSub, TInt aSubPos)

    {

    // Find the position of the specified "%U" or %[0-9]U in aBuf.

    TInt keyLength;

    TInt pos = GetStringSubstringKeyPos( aBuf, aSubPos, keyLength );

    if ( pos == KErrNotFound )

        {

        User::Leave( pos );

        }

    // Enlarge the max length of aBuf if needed:

    TInt reqedLen = aBuf.Length() - keyLength + aSub.Length();

    if ( aBuf.MaxLength() <  reqedLen )

        {

        aBuf.ReAllocL( reqedLen );

        }

    aBuf.Replace( pos, keyLength, aSub );

    }

inline void BluetoothUiUtil::LoadResourceAndSubstringL(RBuf& aBuf,

        TInt aResourceId, const TDesC& aSub, TInt aSubPos )

    {

    HBufC* string = StringLoader::LoadL( aResourceId );

    aBuf.Assign( string );

    // Logical loc strings may contain redundant "[<chars>]" for some reason.

    // This sub-string should be removed in our ad hoc parameter loading method.

    _LIT( KLeftSquareBracket,"[" );

    _LIT( KRightSquareBracket,"]" );

    while ( 1 )

        {

        TInt lpos = aBuf.Find( KLeftSquareBracket );

        TInt rpos = aBuf.Find( KRightSquareBracket );

        if ( lpos > KErrNotFound && rpos > KErrNotFound && ( rpos > lpos ) )

            {

            aBuf.Delete(lpos, rpos - lpos + 1 );

            continue;

            }

        // No sub-strings that match "[" and ends with "]". Done

        break;

        }

    // Add the substring to this string loaded from resource:

    AddSubstringL( aBuf,  aSub, aSubPos );

    }

// End of File