1 /*

     2 * Copyright (c) 2009 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:

    15 * Implementation of SsmLanguageLoader class.

    16 *

    17 */

    18 

    19 #include <e32std.h>

    20 #include <hal.h>

    21 

    22 #include "ssmlanguageloader.h"

    23 #include "trace.h"

    24 

    25 _LIT( KLocaleDllNameBase, "ELOCL" );

    26 _LIT( KLocaleDllExtensionFormat, ".%u" );

    27 _LIT( KLocaleDllExtensionPadding, "0" );

    28 _LIT( KDefaultLocaleDllNameExtension, ".LOC" );

    29 const TInt KMaxLocaleDllNameLength = 16;

    30 const TInt KMaxLocaleDllExtensionLength = 6;

    31 const TInt KMinLocaleDllExtensionLength = 3;

    32 const TInt KLocaleDllExtensionPaddingPosition = 1;

    33 

    34 // ======== MEMBER FUNCTIONS ========

    35 

    36 // ---------------------------------------------------------------------------

    37 // SsmLanguageLoader::LoadLanguage

    38 //

    39 // ---------------------------------------------------------------------------

    40 //

    41 TInt SsmLanguageLoader::LoadLanguage( const TInt aLanguage )

    42     {

    43     FUNC_LOG;

    44     INFO_1( "Loading language %d", aLanguage );

    45 

    46     TInt errorCode = StoreLanguageToHal( aLanguage );

    47     ERROR( errorCode, "Failed to store language code to HAL" );

    48 

    49     errorCode = LoadLocaleDll( aLanguage );

    50     ERROR( errorCode, "Failed to load locale DLL" );

    51 

    52     return errorCode;

    53     }

    54 

    55 

    56 // -----------------------------------------------------------------------------

    57 // SsmLanguageLoader::StoreLanguageToHal

    58 //

    59 // -----------------------------------------------------------------------------

    60 //

    61 TInt SsmLanguageLoader::StoreLanguageToHal( const TInt aLanguage )

    62     {

    63     FUNC_LOG;

    64 

    65     TInt errorCode = HAL::Set( HAL::ELanguageIndex, aLanguage );

    66     return errorCode;

    67     }

    68 

    69 

    70 // -----------------------------------------------------------------------------

    71 // SsmLanguageLoader::LoadLocaleDll

    72 //

    73 // -----------------------------------------------------------------------------

    74 //

    75 TInt SsmLanguageLoader::LoadLocaleDll( const TInt aLanguage )

    76     {

    77     FUNC_LOG;

    78 

    79     // Dot plus five digit locale

    80     TBuf<KMaxLocaleDllExtensionLength> extension; 

    81     extension.Format( KLocaleDllExtensionFormat, aLanguage );

    82     

    83     // Padd ".1" to ".01" for compatibility.

    84     if ( extension.Length() < KMinLocaleDllExtensionLength ) 

    85         {

    86         extension.Insert( KLocaleDllExtensionPaddingPosition,

    87                           KLocaleDllExtensionPadding );

    88         }

    89     

    90     TBuf<KMaxLocaleDllNameLength> localeDllName;

    91     localeDllName = KLocaleDllNameBase;

    92     localeDllName.Append( extension );

    93 

    94     INFO_1( "Loading DLL named '%S'", &localeDllName );

    95 

    96     TInt errorCode = ChangeLocale( localeDllName );

    97 

    98     if ( errorCode == KErrNotFound ) // Try default locale

    99         {

   100         INFO( "SsmLanguageLoader: Loading default locale" );

   101 

   102         localeDllName = KLocaleDllNameBase;

   103         localeDllName.Append( KDefaultLocaleDllNameExtension );

   104 

   105         errorCode = ChangeLocale( localeDllName );

   106         }

   107 

   108     if ( errorCode == KErrNone )

   109         {

   110         TLocale().Set();

   111         }

   112 

   113     return errorCode;

   114     }

   115 

   116 

   117 // -----------------------------------------------------------------------------

   118 // SsmLanguageLoader::ChangeLocale

   119 //

   120 // -----------------------------------------------------------------------------

   121 //

   122 TInt SsmLanguageLoader::ChangeLocale( const TDesC& aLocaleDllName )

   123     {

   124     FUNC_LOG;

   125 

   126     TExtendedLocale extLocale;

   127     TInt errorCode = extLocale.LoadLocale( aLocaleDllName );

   128     ERROR( errorCode, "Failed to load locale" );

   129 

   130     if ( errorCode == KErrNone )

   131         {

   132         errorCode = extLocale.SaveSystemSettings();

   133         ERROR( errorCode, "Failed to set locale" );

   134         }

   135 

   136     return errorCode;

   137     }