code/libraries/joomlatools/library/filesystem/stream/abstract.php
public function isSeekable()
    {
        if($resource = $this->getResource())
        {
            $data = stream_get_meta_data($resource);
            return (bool) $data['seekable'];

        }

        return false;
    }
public function isSeekable()
    {
        if($resource = $this->getResource())
        {
            $data = stream_get_meta_data($resource);
            return (bool) $data['seekable'];

        }

        return false;
    }
public function isSeekable ( ) { if ( $ resource = $ this -> getResource ( ) ) { $ data = stream_get_meta_data ( $ resource ) ; return ( bool ) $ data [ 'seekable' ] ; } return false ; }
Check if the stream is seekable

@return bool Returns TRUE on success or FALSE on failure.
Check if the stream is seekable