cow-say for git post-receive and campfire

post-receive

#!/usr/bin/env python

import json
import requests
import json
import commands
import pipes
import sys
import glob
import os
import random

singleton = lambda fn: fn()

@singleton
def config():
    with open(os.path.expanduser('~/.campfire'), 'r') as handle:
        return json.load(handle)

cow_formats = [os.path.splitext(os.path.basename(path))[0] for path in glob.glob('/usr/share/cowsay/cows/*.cow')]
cow_format = lambda: random.choice(cow_formats)

oldrev, newrev, refname = sys.stdin.read().split()

for message in (message.strip() for message in commands.getoutput("git log --format='[%an] %s' {0}..{1}".format(oldrev, newrev)).split('\n')):
    message = json.dumps({
        'message': {
            'body': commands.getoutput('/usr/games/cowsay -f {0} {1}'.format(pipes.quote(cow_format()), pipes.quote(message))),
            'type': 'PasteMessage'
        }
    })
    requests.post(
        'https://{user}.campfirenow.com/room/{room}/speak.json'.format(**config),
        data=message,
        headers={'Content-Type': 'application/json'},
        auth=(config['token'], 'X'),
    )