#!python

import sys
from fmtlabels.lines import lbl_fmtlines

assert sys.version_info >= (3,5)

if len(sys.argv) < 2:
    raise Exception('Usage: fmtlines <category> [input]')

category = sys.argv[1]
input = open(sys.argv[2], 'r') if len(sys.argv) >= 3 else sys.stdin

lbl_fmtlines(sys.stdout, category, input)