unifies znc logs

unify_znc_logs.py

#!/usr/bin/env python3
# ZNC log unifier
# assumes all the logs are in folder 'log'
#  and all files are output to folder 'outlog'

# This basically changes all the logs like:
#    log/danneh_rizon_#chan_20142304.log
#    log/danneh_rizon_#chan_20142305.log
#    log/danneh_rizon_#chan_20142306.log
# to:
#    outlog/danneh_rizon_#chan.log
#
# And makes every line in the new log have the date, from this:
#    [19:32:05] <Dandan> jjjjjjjjjjjjjjj
# to:
#    [2014-23-04][19:32:05] <Dandan> jjjjjjjjjjjjjjj

import os
import re

if not os.path.exists('outlog'):
    os.makedirs('outlog')

p = re.compile('([a-z]+)_([^_]+)_([\S]+)_([0-9]+)\.log')

for log in os.listdir('log'):
    # try:
    user = p.match(log).group(1)
    network = p.match(log).group(2)
    target = p.match(log).group(3)
    date = p.match(log).group(4)

    outpath = 'outlog/{}_{}_{}.log'.format(user, network, target)
    outline = '[{}-{}-{}]{{}}'.format(date[0:4], date[4:6], date[6:8])

    if not os.path.exists(outpath):
        open(outpath, 'w').close()

    with open(outpath, 'a', encoding='utf-8', errors='ignore') as outfile:
        with open('log/{}'.format(log), encoding='utf-8', errors='ignore') as infile:
            for line in infile:
                outfile.write(outline.format(line))
    # except:
    #   print('FAILED:', log)