1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

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

    15 * localised to a string to be shown in GUI.

    16 *

    17 */

    18 

    19 inline TInt BluetoothUiUtil::GetSubstringKeyPos( 

    20         const TDes& aDes, const TDesC& aKey, 

    21         TInt aKeyPos, TInt& aKeyLength )

    22     {

    23     ASSERT( aKeyPos > KErrNotFound );

    24     _LIT(KPercentSymbol, "%" );

    25     // 32 would be to fit any key substring in practice:

    26     TBuf<32> key;

    27     TInt pos( KErrNotFound );

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

    29     if ( aKeyPos == 0 )

    30         {

    31         key.Copy( KPercentSymbol );

    32         key.Append(aKey);

    33         pos = aDes.Find( key );

    34         }

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

    36     if ( pos == KErrNotFound )

    37         {

    38         key.Copy( KPercentSymbol );

    39         key.AppendNum( aKeyPos );

    40         key.Append( aKey );

    41         pos = aDes.Find( key );

    42         }

    43     if ( pos > KErrNotFound )

    44         {

    45         aKeyLength = key.Length();

    46         }

    47     return pos;

    48     }

    49 

    50 inline TInt BluetoothUiUtil::GetStringSubstringKeyPos( 

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

    52     {

    53     _LIT(KStringKeyword,"U");

    54     TPtrC ptr( KStringKeyword );

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

    56     }

    57 

    58 inline void BluetoothUiUtil::AddSubstringL( 

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

    60     {

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

    62     TInt keyLength;

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

    64     if ( pos == KErrNotFound )

    65         {

    66         User::Leave( pos );

    67         }

    68     // Enlarge the max length of aBuf if needed:

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

    70     if ( aBuf.MaxLength() <  reqedLen )

    71         {

    72         aBuf.ReAllocL( reqedLen );

    73         }

    74     aBuf.Replace( pos, keyLength, aSub );

    75     }

    76 

    77 inline void BluetoothUiUtil::LoadResourceAndSubstringL(RBuf& aBuf,

    78         TInt aResourceId, const TDesC& aSub, TInt aSubPos )

    79     {

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

    81     aBuf.Assign( string );

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

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

    84     _LIT( KLeftSquareBracket,"[" );

    85     _LIT( KRightSquareBracket,"]" );

    86     while ( 1 )

    87         {

    88         TInt lpos = aBuf.Find( KLeftSquareBracket );

    89         TInt rpos = aBuf.Find( KRightSquareBracket );

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

    91             {

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

    93             continue;

    94             }

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

    96         break;

    97         }

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

    99     AddSubstringL( aBuf,  aSub, aSubPos );

   100     }

   101 

   102 // End of File

   103