1 /*

     2 * Copyright (c) 2002-2005 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 the License "Symbian Foundation License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: The class handles IMPS Setting file reading.

    15 *

    16 *

    17 */

    18 

    19 

    20 // INCLUDE FILES

    21 #include    <e32std.h>

    22 #ifdef _DEBUG

    23 #include    <flogger.h>

    24 #endif

    25 #include "ParserUtils.h"

    26 

    27 // ================= MEMBER FUNCTIONS =======================

    28 

    29 

    30 

    31 //**********************************

    32 // CImpsSettingFile

    33 //**********************************

    34 

    35 CImpsSettingFile* CImpsSettingFile::NewL(

    36     RFs& aFs )

    37     {

    38     CImpsSettingFile* self = new ( ELeave ) CImpsSettingFile( aFs );

    39     return self;

    40     }

    41 

    42 CImpsSettingFile::~CImpsSettingFile()

    43     {

    44     if ( iOpen )

    45         {

    46         iReader.Close();

    47         }

    48     iOpen = EFalse;

    49     }

    50 

    51 CImpsSettingFile::CImpsSettingFile( RFs& aFs )

    52         : iFs( aFs ),

    53         iOpen( EFalse )

    54     {

    55 

    56     }

    57 

    58 void CImpsSettingFile::OpenL( TDesC& aResFile )

    59     {

    60     // open a file

    61     iFileName = aResFile;

    62 

    63     TInt myError = iReader.Open( iFs,

    64                                  iFileName,

    65                                  EFileShareReadersOnly );

    66 

    67     User::LeaveIfError( myError );

    68     iOpen = ETrue;

    69 

    70     }

    71 

    72 TPtrC8 CImpsSettingFile::KeyValueL( const TDesC8& aKey )

    73     {

    74 

    75     TPtrC8 myKey;

    76     TPtrC8 myValue;

    77     TBool getIt( EFalse );

    78     TInt err = 0;

    79 

    80     // Reset the reader

    81     OpenL( iFileName );

    82 

    83     // Start to search

    84     while ( !getIt )

    85         {

    86         TRAP ( err, ReadRowL( myKey, myValue ) );

    87         if ( err != KErrNone )

    88             {

    89             User::Leave( KErrNotFound );

    90             }

    91         if ( !myKey.CompareF( aKey ) )

    92             {

    93             return myValue;

    94             }

    95         }

    96     return TPtrC8();

    97     }

    98 

    99 void CImpsSettingFile::ReadRowL( TPtrC8& aKey, TPtrC8& aValue )

   100     {

   101     // READ ONE ROW

   102     TChar delim( 10 );

   103     iReader.ReadL( iRowBuffer, delim );

   104     TInt length = iRowBuffer.Length();

   105     if ( length > 2 )

   106         {

   107         // DROP CR+LF FROM THE END OF LINE

   108         iRowBuffer.Delete( length - 2, 2 );

   109 

   110         TInt pos = 0;

   111         pos = iRowBuffer.Find( _L8( "=" ) );

   112         if ( pos > 0 )

   113             {

   114             aKey.Set( iRowBuffer.Left( pos ) );

   115             // Cut off separator

   116             aValue.Set( iRowBuffer.Mid( pos + 1 ) );

   117             }

   118         }

   119     }

   120 

   121 //  End of File

   122