#include <qbasicatomic.h>

#include <QDir>

    \attention Cross-Platform API

    \return True if file is found. Otherwise return false.

#ifdef Q_OS_SYMBIAN

    RFs& fs = CCoeEnv::Static()->FsSession();

    TFindFile ff(fs);

    TPtrC fName((ushort*)(str.constData()),str.length());

    QString dNameString;

    if (!defaultDrive.isNull()) {

        dNameString.append(defaultDrive);

        dNameString += QString(":");

    }    

    dNameString += QString("\\");    

    TPtrC dName((ushort*)(dNameString.constData()),dNameString.length());

    TInt err=ff.FindByDir(fName, dName);

    if (err==KErrNone) {

        TParse p;

        p.Set(ff.File(), 0,0);

        TPtrC ptrC = p.Drive();

        QString str2 = QString::fromRawData((QChar*)(ushort*)ptrC.Ptr(),ptrC.Length()); 

        str.prepend(str2);

        return true;

    }    

    else {

        return false;

    }

#else

#endif

class AvailableDrives : public QString

public:

    AvailableDrives();    

};

AvailableDrives::AvailableDrives() {

#ifdef Q_OS_SYMBIAN    

    // add first C and then Y..A and then Z.

    TInt driveNumber;

    if (driveList[EDriveC]) {        

        driveNumber = EDriveC;

        fs.DriveToChar(driveNumber, driveLetter);

        QChar cC = static_cast<QChar>(driveLetter);    

        this->append(cC);

    }

    for (driveNumber = EDriveY; driveNumber >= EDriveA; driveNumber--) {

        if (driveNumber == EDriveC) {

            continue;

        }

        else {

            if (driveList[driveNumber]) {

                fs.DriveToChar(driveNumber, driveLetter);

                QChar c = static_cast<QChar>(driveLetter);

                this->append(c);

            }    

        }    

    }

    if (driveList[EDriveZ]) {    

        driveNumber = EDriveZ;

        QChar cZ = static_cast<QChar>(driveLetter);

        this->append(cZ);

#else            

     QFileInfoList fil = QDir::drives();

     for (int j=0; j< fil.length(); j++) {

         QString fp = fil.at(j).filePath();

         if ((!fp.isEmpty()) && (fp[0] != '/') && (fp[0] != '\\')) {                

         this->append(fp[0]);

         }        

     }

#endif     

Q_GLOBAL_STATIC(AvailableDrives, gs_AvailableDrives)

/*!

    \attention Cross-Platform API

    \returns Available drive(s) if platform supports (Eg. Symbian, Windows...). 

    If platform doesn't support drive(s) (Eg. Linux) then empty QString is returned. 

*/

QString HbFindFile::availableDrives()

{

     QString *str = gs_AvailableDrives();

     if (str) {

         return *str;         

     }

     else {

         return QString(); 

     }

}