'Set the peek and blurb text'

def set_peek(self, dataset, is_multi_byte=False):

    if (not dataset.dataset.purged):
        dataset.peek = data.get_file_peek(dataset.file_name, is_multi_byte=is_multi_byte)
        dataset.blurb = 'XML    data'
    else:
        dataset.peek = 'file    does    not    exist'
        dataset.blurb = 'file    purged    from    disk'
