Filtering Directory Content

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Article

Created: vinayhosmani (22 Jun 2007)

Last edited: hamishwillee (23 Jul 2012)

This code is to filter the files of desired extension from a folder. Here the desired path is retrieved by use of PathInfo class.

Header Reqired:

#include <f32file.h> 
#include <pathinfo.h> //for PathInfo

Library Needed:

LIBRARY efsrv.lib 
LIBRARY platformenv.lib //for PathInfo

CMyClass.h

In class declaration add these lines

RArray<TEntry> iFileList;

CMyclass.cpp

_LIT(KFileExtension,"*.mp3");
 
 
 
void CMyclass::ListDirectory( )
{
     CDir* dirs = 0;
     CDir* files = 0;
 
     TFileName path;
     path.Copy(PathInfo::PhoneMemoryRootPath());
     path.Append(PathInfo::DigitalSoundsPath());
     User::LeaveIfError(iFsSession.GetDir(path,KEntryAttNormal,ESortByName,files, dirs));
 
     TFindFile findFiles( iFsSession );
     TInt err = findFiles.FindWildByDir( KFileExtension, path, files );
 
     CleanupStack::PushL( dirs );
     CleanupStack::PushL( files );
 
//get files in base path
 
    while (err == KErrNone)
           {
              for( TInt i=0; i<files->Count(); i++ )
                    {
                    iFileList.Append( (*files)[i] );
                    }
            err = findFiles.FindWild( files );
         }
   CleanupStack::PopAndDestroy( 2 );
}

Now iFileList contains the files of desired extension. Here the list will contain only the mp3 files from c:\Nokia\Sounds\Digital directory. PathInfo class can determine various system paths for games, videos, images etc.

Links

See also: Directory Monitoring