/// <summary>
/// Checks if a mounted drive exists and the filesystem type is <see cref="DOKAN_FORMAT"/>.
/// </summary>
/// <param name="driveLetter">Letter of drive to check.</param>
/// <returns><c>true</c>, if the drive with the given <paramref name="driveLetter"/> is a mounted Dokan drive, else <c>false</c>.</returns>
public static bool IsDokanDrive(char driveLetter)
{
bool result = false;
// Check if this drive was queried before
if (_dokanDriveLetters.Contains(driveLetter))
{
return(true);
}
try
{
ThreadingUtils.CallWithTimeout(() =>
{
// By checking the given drive's format, we'll find ALL Dokan drives, also those which are added by other MP2 instances (Client/Server), which is good, but we even
// find those which are not added to the system by MediaPortal at all, which is not so good.
// A better way would be to modify the drive format the DOKAN library uses for its drives. That way, we could use an own drive format type for MP2.
// But unfortunately, the drive format cannot be configured in the DOKAN library.
// It would be also possible to check the drive's volume label, but I think the check for the drive format is more elegant.
DriveInfo driveInfo = new DriveInfo(driveLetter + ":");
// Check the IsReady property to avoid DriveNotFoundException
result = driveInfo.IsReady && driveInfo.DriveFormat == DOKAN_FORMAT;
}, DRIVE_TIMEOUT_MS);
}
catch (TimeoutException)
{
result = true;
}
// Cache information only for DOKAN drives, all other (also non-existing) needs to be checked again (i.e. for removable media)
if (result)
{
_dokanDriveLetters.Add(driveLetter);
}
return(result);
}