#!/usr/bin/env python

## Copyright (C) 2011 Gary Benson <gbenson@redhat.com>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.

# See http://gbenson.net/?p=292 for details...

import re
import sys

hunks = []
for line in sys.stdin.xreadlines():
    line = line.rstrip()
    if line.startswith("@@"):
        hunks.append([line])
    elif line[:3] not in ("---", "+++"):
        hunks[-1].append(line)

IGNORE = map(re.compile, (
    r"^$",
    r"^ ",
    r"^[+-]make(\[\d+\])?: (Entering|Leaving) directory `.*'$",
    r"^[+-]gcc -DHAVE_CONFIG_H",
    r"^[+-].*/libiberty.a",
    r"^[+-]Making a new config file\.\.\.",
    r"^[+-]Test Run By .* on ... ... [ \d]\d \d\d:\d\d:\d\d \d{4}$",
    r"^[+-].*/gdb/gdb version .* -nw -nx -data-directory .*/data-directory$"))

def is_expected(line):
    for expr in IGNORE:
        if expr.match(line):
            return True
    return False

for hunk in hunks:
    hunk = [(line, is_expected(line)) for line in hunk]
    for line, expected in hunk[1:]:
        if not expected:
            for line, expected in hunk:
                if line.startswith("@@"):
                    colour = 33
                else:
                    colour = expected and 32 or 31
                print "\x1B[%dm%s\x1B[0m" % (colour, line)
            break