Categories: Symbian C++ | S60 | How To | Architecture/Design | Code Examples

This page was last modified 08:20, 9 April 2008.

From Forum Nokia Wiki

Class Header:

class TDirContentReader
{
   public:
      TDirContentReader( RFs& aFs, const TDesC& aDirName ): 
           iFs( aFs ), iDirName( aDirName ) {}
      TInt Exec();
	
      inline TUint  DirsCount()  { return iDirsCount;  }
      inline TUint  FilesCount() { return iFilesCount; }
      inline TInt64 FilesSize()  { return iFileSize;   }
	
   private:
	
      void ReadDirL( const TDesC& aDirName, 
                     TUint& aDirsCount, 
                     TUint& aFilesCount, 
                     TInt64& aFileSize );
 
      const  TDesC& iDirName;	
      RFs&   iFs;
      TUint  iDirsCount;
      TUint  iFilesCount;
      TInt64 iFileSize;
};

Class Body:

TInt TDirContentReader :: Exec()
{
   iDirsCount  = 0;
   iFilesCount = 0;
   iFileSize   = 0;	
   TInt execResult = KErrNone;
   TRAP( execResult, ReadDirL( iDirName, iDirsCount, iFilesCount, iFileSize ) );
   return execResult;
}
 
void TDirContentReader :: ReadDirL( const TDesC& aDirName, 
                                    TUint& aDirsCount, 
                                    TUint& aFilesCount, 
                                    TInt64& aFileSize )
{
   CDir* fileList = NULL;
   CDir* dirList  = NULL;	
    	
   User :: LeaveIfError(
		iFs.GetDir( aDirName, 
               	    KEntryAttNormal | KEntryAttHidden | KEntryAttSystem,
                    ESortByName | EDirsFirst | EAscending,
                    fileList, 
                    dirList ) );
                   
	
   aDirsCount  += dirList->Count();
   aFilesCount += fileList->Count();
   for( TUint i = 0; i < fileList->Count(); i++ )
      aFileSize += fileList->operator[](i).iSize;			
   delete fileList;
   
   CleanupStack :: PushL( dirList );
   for( TUint i = 0; i < dirList->Count(); i++ )
   {
      HBufC* buf =  HBufC :: NewL( aDirName.Length() + 
                                   dirList->operator[](i).iName.Length() + 1);
      
      TPtr ptr = buf->Des();     
      ptr.Append( aDirName );
      ptr.Append( dirList->operator[]( i ).iName );
      ptr.Append( KPathDelimiter );
			
      CleanupStack :: PushL( buf );
      ReadDirL( *buf, iDirsCount, iFilesCount, iFileSize );
      CleanupStack :: PopAndDestroy( buf );
   }			
   CleanupStack :: PopAndDestroy( dirList );
}

Usage example:

RFs myFs;
   User::LeaveIfError( myFs.Connect() );
   _LIT( KResources, "Z:\\resource\\" );
   TDirContentReader dirContentReader( &myFs, KResources() ); 
   if (dirContentReader.Exec() == KErrNone )
   {
   // TInt64 totalSize = dirContentReader.FilesSize();
   }
   myFs.Close();