How to calculate directory content

Comments

I'm not keen on this code. It doesn't follow conventional naming, has some inefficiencies and passes RFs by pointer for some reason. It's good to have an example like this - it's requested regularly - but needs some tidying up.

---

Hi! You are right. I am already submit some changes.

Den123

Log in or Join to leave comments.

Article Metadata

---

Article

Created: Den123 (26 Jun 2007)

Last edited: hamishwillee (26 Jul 2012)

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();