tf_diff.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import re

RED = '\033[31m'
END = '\033[0m'
BOLD = '\033[1m'

def emphasis_print(text):
    print(RED + BOLD + text + END)

while True:
    line = sys.stdin.readline()
    if not line: break # EOF

    l = line.splitlines()[0]

    match = re.search('^\s+[^:]+:\s+"([^"]*)"\s=>\s"([^"]*)"', l)
    if match is None:
        print(l)
        continue

    left, right = match.groups()
    if left == right:
        print(l)
        continue

    emphasis_print(l)