Parses and loads a single file into the target table.

def load_file(self, cursor, target, fname, options):
        "Parses and loads a single file into the target table."
        with open(fname) as fin:
            log.debug("opening {0} in {1} load_file".format(fname, __name__))
            encoding = options.get('encoding', 'utf-8')
            if target in self.processors:
                reader = self.processors[target](fin, encoding=encoding)
            else:
                reader = self.default_processor(fin, encoding=encoding)
            columns = getattr(reader, 'output_columns', None)
            for _ in xrange(int(options.get('skip-lines', 0))):
                fin.readline()
            cursor.copy_from(reader, self.qualified_names[target],
                             columns=columns)